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• how to calculate power consumption on an Android mobile that uses wifi?

  - by Marco

  Hello, I have implemented a routing protocol on an Android 1.6 mobile that uses wireless (ad-hoc) network in order to exchange messages. Now I would like to evaluate it under an energy consumption point of view, the base would be to try to calculate the energy wasted to transmit a single packet, do anybody has any idea how to do that? Software/hardware solutions are welcome! Thanx :)

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• Any reasons not to gzip?

  - by Haroldo

  I remember someone telling me that gzipped content is not cached on some browsers? is this true? Are there any other reasons why I shouldn't gzip my content (pages, javascript and css files) with htaccess?

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• CSS single property classes

  - by user1490379

  As more presentational html properties get deprecated the natural response for me was to make single property CSS classes such as .text-align-left{text-align:left}. My question is, is this preferred versus inline styles? Stackoverflow actually uses quite a bit of inline styles. PS: I know this isn't really a coding question and it is likely to incite debate but stackoverflow is the largest stack exchange for code and this question does have some use for future individuals.

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• Why is the page still caching even after the no-cache headers have been sent?

  - by Matthew Grasinger

  I've done a ton of research on this and have asked many people with help and still no success. Here are the details... I'm involved in developing a website that pulls data from various data files, combines them in a temp .csv file, and then is graphed using a popular graphing library: dygraphs. The bulk of the website is written in PHP. The parameters that determine the data that is graphed are stored in the users session, the .csv is named after the users session and available for download, and then the .csv file is written in a script that passes it to the dygraphs object. And we've found, even with the no-cache headers sent: header("Cache-Control: no-cache, must-revalidate"); header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); Many users experience in the middle of a session, (if enough different graphs are generated) the page displaying an older, static rendering of the page (data they had graphed earlier in the session) as if it were cached and loaded instead of getting a new request. It only gets weirder though: I've checked using developer tools in both Firefox and Chrome and both browsers are receiving the no-cache headers just fine; Even when the problem occurs if you view the page source, the source is the correct content (a table/legend is also dynamically created using php, the source shows the correct table, but what is rendered is older content); the page begins to render correctly until the graph is about to be display, and then shows the older content; the older content displays as if it were a completely static overlay--the cached graph does not have the same dynamic features (roll over data point display, zoom and pan, etc.) And it is as if the correct page were somewhere beneath it (the download button for the csv file moves depending on how large the table is. The older, static page does nothing if you click the download .csv button, but if you can manage to find the one in the page beneath it you can click and still download the .csv. The data in the .csv is correct) It is one of the strangest things I've seen in development thus far. Some other relevant facts are that all the problems I've personally experience occurred while I was using Chrome. Non of these symptoms have been reported by Firefox users. IE users have had the same problems (IE users are forced to use chrome frame). I'm at my wits end at this point. We've sent the php headers; we've tried setting the cache profile for php on IIS as "DisableCache" (or whatever); we've tried sending a random query string to the results page; we've tried all the appropriate meta tags--all with no success.

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• .NET integration Framework

  - by buhtla

  Is there any kind of framework that provides some generic mechanism for integration between applications or something similar? By integration I presume data exchange (import and export) between two applications via some standard interface like Web Service.

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• Facebook data collection ethical issues

  - by the_great_monkey

  If I have a Facebook app, and my users agree to allow my app to access their information, photos, friends, etc, is it ethical to grab their information when they log in, and then saving it in memory so that the next time he goes to my app, it can load faster? If so, what about when the user logged off? Is the right thing to do to is to delete all the cached information and photos that the user provided? Has Facebook got any way to detect that we're doing this (saving their information, etc)?

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• why my home page not showing in google ?

  - by user298788

  hello members i have 1 site : http://www.magentocommerceexperts.com/ it is not showing cache in google toolabr also i am not getiing result properly also other pages has been cached and it showing and the site genrated in wordpress so will u show me whats a problem. all seo stuff done completd and i am facing problem since 2 months

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• Why should you choose Oracle WebLogic 12c instead of JBoss EAP 6?

  - by Ricardo Ferreira

  In this post, I will cover some technical differences between Oracle WebLogic 12c and JBoss EAP 6, which was released a couple days ago from Red Hat. This article claims to help you in the evaluation of key points that you should consider when choosing for an Java EE application server. In the following sections, I will present to you some important aspects that most customers ask us when they are seriously evaluating for an middleware infrastructure, specially if you are considering JBoss for some reason. I would suggest that you keep the following question in mind while you are reading the points: "Why should I choose JBoss instead of WebLogic?" 1) Multi Datacenter Deployment and Clustering - D/R ("Disaster & Recovery") architecture support is embedded on the WebLogic Server 12c product. JBoss EAP 6 on the other hand has no direct D/R support included, Red Hat relies on third-part tools with higher prices. When you consider a middleware solution to host your business critical application, you should worry with every architectural aspect that are related with the solution. Fail-over support is one little aspect of a truly reliable solution. If you do not worry about D/R, your solution will not be reliable. Having said that, with Red Hat and JBoss EAP 6, you have this extra cost that will increase considerably the total cost of ownership of the solution. As we commonly hear from analysts, open-source are not so cheaper when you start seeing the big picture. - WebLogic Server 12c supports advanced LAN clustering, detection of death servers and have a common alert framework. JBoss EAP 6 on the other hand has limited LAN clustering support with no server death detection. They do not generate any alerts when servers goes down (only if you buy JBoss ON which is a separated technology, but until now does not support JBoss EAP 6) and manual intervention are required when servers goes down. In most cases, admin people must rely on "kill -9", "tail -f someFile.log" and "ps ax | grep java" commands to manage failures and clustering anomalies. - WebLogic Server 12c supports the concept of Node Manager, which is a separated process that runs on the physical | virtual servers that allows extend the administration of the cluster to WebLogic managed servers that are often distributed across multiple machines and geographic locations. JBoss EAP 6 on the other hand has no equivalent technology. Whole server instances must be managed individually. - WebLogic Server 12c Node Manager supports Coherence to boost performance when managing servers. JBoss EAP 6 on the other hand has no similar technology. There is no way to coordinate JBoss and infiniband instances provided by JBoss using high throughput and low latency protocols like InfiniBand. The Node Manager feature also allows another very important feature that JBoss EAP lacks: secure the administration. When using WebLogic Node Manager, all the administration tasks are sent to the managed servers in a secure tunel protected by a certificate, which means that the transport layer that separates the WebLogic administration console from the managed servers are secured by SSL. - WebLogic Server 12c are now integrated with OTD ("Oracle Traffic Director") which is a web server technology derived from the former Sun iPlanet Web Server. This software complements the web server support offered by OHS ("Oracle HTTP Server"). Using OTD, WebLogic instances are load-balanced by a high powerful software that knows how to handle SDP ("Socket Direct Protocol") over InfiniBand, which boost performance when used with engineered systems technologies like Oracle Exalogic Elastic Cloud. JBoss EAP 6 on the other hand only offers support to Apache Web Server with custom modules created to deal with JBoss clusters, but only across standard TCP/IP networks.  2) Application and Runtime Diagnostics - WebLogic Server 12c have diagnostics capabilities embedded on the server called WLDF ("WebLogic Diagnostic Framework") so there is no need to rely on third-part tools. JBoss EAP 6 on the other hand has no diagnostics capabilities. Their only diagnostics tool is the log generated by the application server. Admin people are encouraged to analyse thousands of log lines to find out what is going on. - WebLogic Server 12c complement WLDF with JRockit MC ("Mission Control"), which provides to administrators and developers a complete insight about the JVM performance, behavior and possible bottlenecks. WebLogic Server 12c also have an classloader analysis tool embedded, and even a log analyzer tool that enables administrators and developers to view logs of multiple servers at the same time. JBoss EAP 6 on the other hand relies on third-part tools to do something similar. Again, only log searching are offered to find out whats going on. - WebLogic Server 12c offers end-to-end traceability and monitoring available through Oracle EM ("Enterprise Manager"), including monitoring of business transactions that flows through web servers, ESBs, application servers and database servers, all of this with high deep JVM analysis and diagnostics. JBoss EAP 6 on the other hand, even using JBoss ON ("Operations Network"), which is a separated technology, does not support those features. Red Hat relies on third-part tools to provide direct Oracle database traceability across JVMs. One of those tools are Oracle EM for non-Oracle middleware that manage JBoss, Tomcat, Websphere and IIS transparently. - WebLogic Server 12c with their JRockit support offers a tool called JRockit Flight Recorder, which can give developers a complete visibility of a certain period of application production monitoring with zero extra overhead. This automatic recording allows you to deep analyse threads latency, memory leaks, thread contention, resource utilization, stack overflow damages and GC ("Garbage Collection") cycles, to observe in real time stop-the-world phenomenons, generational, reference count and parallel collects and mutator threads analysis. JBoss EAP 6 don't even dream to support something similar, even because they don't have their own JVM. 3) Application Server Administration - WebLogic Server 12c offers a complete administration console complemented with scripting and macro-like recording capabilities. A single WebLogic console can managed up to hundreds of WebLogic servers belonging to the same domain. JBoss EAP 6 on the other hand has a limited console and provides a XML centric administration. JBoss, after ten years, started the development of a rudimentary centralized administration that still leave a lot of administration tasks aside, so admin people and developers must touch scripts and XML configuration files for most advanced and even simple administration tasks. This lead applications to error prone and risky deployments. Even using JBoss ON, JBoss EAP are not able to offer decent administration features for admin people which must be high skilled in JBoss internal architecture and its managing capabilities. - Oracle EM is available to manage multiple domains, databases, application servers, operating systems and virtualization, with a complete end-to-end visibility. JBoss ON does not provide management capabilities across the complete architecture, only basic monitoring. Even deployment must be done aside JBoss ON which does no integrate well with others softwares than JBoss. Until now, JBoss ON does not supports JBoss EAP 6, so even their minimal support for JBoss are not available for JBoss EAP 6 leaving customers uncovered and subject to high skilled JBoss admin people. - WebLogic Server 12c has the same administration model whatever is the topology selected by the customer. JBoss EAP 6 on the other hand differentiates between two operational models: standalone-mode and domain-mode, that are not consistent with each other. Depending on the mode used, the administration skill is different. - WebLogic Server 12c has no point-of-failures processes, and it does not need to define any specialized server. Domain model in WebLogic is available for years (at least ten years or more) and is production proven. JBoss EAP 6 on the other hand needs special processes to garantee JBoss integrity, the PC ("Process-Controller") and the HC ("Host-Controller"). Different from WebLogic, the domain model in JBoss is quite new (one year at tops) of maturity, and need to mature considerably until start doing things like WebLogic domain model does. - WebLogic Server 12c supports parallel deployment model which enables some artifacts being deployed at the same time. JBoss EAP 6 on the other hand does not have any similar feature. Every deployment are done atomically in the containers. This means that if you have a huge EAR (an EAR of 120 MB of size for instance) and deploy onto JBoss EAP 6, this EAR will take some minutes in order to starting accept thread requests. The same EAR deployed onto WebLogic Server 12c will reduce the deployment time at least in 2X compared to JBoss. 4) Support and Upgrades - WebLogic Server 12c has patch management available. JBoss EAP 6 on the other hand has no patch management available, each JBoss EAP instance should be patched manually. To achieve such feature, you need to buy a separated technology called JBoss ON ("Operations Network") that manage this type of stuff. But until now, JBoss ON does not support JBoss EAP 6 so, in practice, JBoss EAP 6 does not have this feature. - WebLogic Server 12c supports previuous WebLogic domains without any reconfiguration since its kernel is robust and mature since its creation in 1995. JBoss EAP 6 on the other hand has a proven lack of supportability between JBoss AS 4, 5, 6 and 7. Different kernels and messaging engines were implemented in JBoss stack in the last five years reveling their incapacity to create a well architected and proven middleware technology. - WebLogic Server 12c has patch prescription based on customer configuration. JBoss EAP 6 on the other hand has no such capability. People need to create ticket supports and have their installations revised by Red Hat support guys to gain some patch prescription from them. - Oracle WebLogic Server independent of the version has 8 years of support of new patches and has lifetime release of existing patches beyond that. JBoss EAP 6 on the other hand provides patches for a specific application server version up to 5 years after the release date. JBoss EAP 4 and previous versions had only 4 years. A good question that Red Hat will argue to answer is: "what happens when you find issues after year 5"?  5) RAC ("Real Application Clusters") Support - WebLogic Server 12c ships with a specific JDBC driver to leverage Oracle RAC clustering capabilities (Fast-Application-Notification, Transaction Affinity, Fast-Connection-Failover, etc). Oracle JDBC thin driver are also available. JBoss EAP 6 on the other hand ships only the standard Oracle JDBC thin driver. Load balancing with Oracle RAC are not supported. Manual intervention in case of planned or unplanned RAC downtime are necessary. In JBoss EAP 6, situation does not reestablish automatically after downtime. - WebLogic Server 12c has a feature called Active GridLink for Oracle RAC which provides up to 3X performance on OLTP applications. This seamless integration between WebLogic and Oracle database enable more value added to critical business applications leveraging their investments in Oracle database technology and Oracle middleware. JBoss EAP 6 on the other hand has no performance gains at all, even when admin people implement some kind of connection-pooling tuning. - WebLogic Server 12c also supports transaction and web session affinity to the Oracle RAC, which provides aditional gains of performance. This is particularly interesting if you are creating a reliable solution that are distributed not only in an LAN cluster, but into a different data center. JBoss EAP 6 on the other hand has no such support. 6) Standards and Technology Support - WebLogic Server 12c is fully Java EE 6 compatible and production ready since december of 2011. JBoss EAP 6 on the other hand became fully compatible with Java EE 6 only in the community version after three months, and production ready only in a few days considering that this article was written in June of 2012. Red Hat says that they are the masters of innovation and technology proliferation, but compared with Oracle and even other proprietary vendors like IBM, they historically speaking are lazy to deliver the most newest technologies and standards adherence. - Oracle is the steward of Java, driving innovation into the platform from commercial and open-source vendors. Red Hat on the other hand does not have its own JVM and relies on third-part JVMs to complete their application server offer. 95% of Red Hat customers are using Oracle HotSpot as JVM, which means that without Oracle involvement, their support are limited exclusively to the application server layer and we all know that most problems are happens in the JVM layer. - WebLogic Server 12c supports natively JDK 7, which empower developers to explore the maximum of the Java platform productivity when writing code. This feature differentiate WebLogic from others application servers (except GlassFish that are also managed by Oracle) because the usage of JDK 7 introduce such remarkable productivity features like the "try-with-resources" enhancement, catching multiple exceptions with one try block, Strings in the switch statements, JVM improvements in terms of JDBC, I/O, networking, security, concurrency and of course, the most important feature of Java 7: native support for multiple non-Java languages. More features regarding JDK 7 can be found here. JBoss EAP 6 on the other hand does not support JDK 7 officially, they comment in their community version that "Java SE 7 can be used with JBoss 7" which does not gives you any guarantees of enterprise support for JDK 7. - Oracle WebLogic Server 12c supports integration with Spring framework allowing Spring applications to use WebLogic special transaction manager, exposing bean interfaces to WebLogic MBeans to take advantage of all WebLogic monitoring and administration advantages. JBoss EAP 6 on the other hand has no special integration with Spring. In fact, Red Hat offers a suspicious package called "JBoss Web Platform" that in theory supports Spring, but in practice this package does not offers any special integration. It is just a facility for Red Hat customers to have support from both JBoss and Spring technology using the same customer support. 7) Lightweight Development - Oracle WebLogic Server 12c and Oracle GlassFish are completely integrated and can share applications without any modifications. Starting with the 12c version, WebLogic now understands natively GlassFish deployment descriptors and specific configurations in order to offer you a truly and reliable migration path from a community Java EE application server to a enterprise middleware product like WebLogic. JBoss EAP 6 on the other hand has no support to natively reuse an existing (or still in development) application from JBoss AS community server. Users of JBoss suffer of critical issues during deployment time that includes: changing the libraries and dependencies of the application, patching the DTD or XSD deployment descriptors, refactoring of the application layers due classloading issues and anomalies, rebuilding of persistence, business and web layers due issues with "usage of the certified version of an certain dependency" or "frameworks that Red Hat potentially does not recommend" etc. If you have the culture or enterprise IT directive of developing Java EE applications using community middleware to in a certain future, transition to enterprise (supported by a vendor) middleware, Oracle WebLogic plus Oracle GlassFish offers you a more sustainable solution. - WebLogic Server 12c has a very light ZIP distribution (less than 165 MB). JBoss EAP 6 ZIP size is around 130 MB, together with JBoss ON you have more 100 MB resulting in a higher download footprint. This is particularly interesting if you plan to use automated setup of application server instances (for example, to rapidly setup a development or staging environment) using Maven or Hudson. - WebLogic Server 12c has a complete integration with Maven allowing developers to setup WebLogic domains with few commands. Tasks like downloading WebLogic, installation, domain creation, data sources deployment are completely integrated. JBoss EAP 6 on the other hand has a limited offer integration with those tools.  - WebLogic Server 12c has a startup mode called WLX that turns-off EJB, JMS and JCA containers leaving enabled only the web container with Java EE 6 web profile. JBoss EAP 6 on the other hand has no such feature, you need to disable manually the containers that you do not want to use. - WebLogic Server 12c supports fastswap, which enables you to change classes without redeployment. This is particularly interesting if you are developing patches for the application that is already deployed and you do not want to redeploy the entire application. This is the same behavior that most application servers offers to JSP pages, but with WebLogic Server 12c, you have the same feature for Java classes in general. JBoss EAP 6 on the other hand has no such support. Even JBoss EAP 5 does not support this until now. 8) JMS and Messaging - WebLogic Server 12c has a proven and high scalable JMS implementation since its initial release in 1995. JBoss EAP 6 on the other hand has a still immature technology called HornetQ, which was introduced in JBoss EAP 5 replacing everything that was implemented in the previous versions. Red Hat loves to introduce new technologies across JBoss versions, playing around with customers and their investments. And when they are asked about why they have changed the implementation and caused such a mess, their answer is always: "the previous implementation was inadequate and not aligned with the community strategy so we are creating a new a improved one". This Red Hat practice leads to uncomfortable investments that in a near future (sometimes less than a year) will be affected in someway. - WebLogic Server 12c has troubleshooting and monitoring features included on the WebLogic console and WLDF. JBoss EAP 6 on the other hand has no direct monitoring on the console, activity is reflected only on the logs, no debug logs available in case of JMS issues. - WebLogic Server 12c has extremely good performance and scalability. JBoss EAP 6 on the other hand has a JMS storage mechanism relying on Oracle database or MySQL. This means that if an issue in production happens and Red Hat affirms that an performance issue is happening due to database problems, they will not support you on the performance issue. They will orient you to call Oracle instead. - WebLogic Server 12c supports messaging enterprise features like SAF ("Store and Forward"), Distributed Queues/Topics and Foreign JMS providers support that leverage JMS implementations without compromise developer code making things completely transparent. JBoss EAP 6 on the other hand do not even dream to support such features. 9) Caching and Grid - Coherence, which is the leading and most mature data grid technology from Oracle, is available since early 2000 and was integrated with WebLogic in 2009. Coherence and WebLogic clusters can be both managed from WebLogic administrative console. Even Node Manager supports Coherence. JBoss on the other hand discontinued JBoss Cache, which was their caching implementation just like they did with the messaging implementation (JBossMQ) which was a issue for long term customers. JBoss EAP 6 ships InfiniSpan version 1.0 which is immature and lack a proven record of successful cases and reliability. - WebLogic Server 12c has a feature called ActiveCache which uses Coherence to, without any code changes, replicate HTTP sessions from both WebLogic and other application servers like JBoss, Tomcat, Websphere, GlassFish and even Microsoft IIS. JBoss EAP 6 on the other hand does have such support and even when they do in the future, they probably will support only their own application server. - Coherence can be used to manage both L1 and L2 cache levels, providing support to Oracle TopLink and others JPA compliant implementations, even Hibernate. JBoss EAP 6 and Infinispan on the other hand supports only Hibernate. And most important of all: Infinispan does not have any successful case of L1 or L2 caching level support using Hibernate, which lead us to reflect about its viability. 10) Performance - WebLogic Server 12c is certified with Oracle Exalogic Elastic Cloud and can run unchanged applications at this engineered system. This approach can benefit customers from Exalogic optimization's of both kernel and JVM layers to boost performance in terms of 10X for web, OLTP, JMS and grid applications. JBoss EAP 6 on the other hand has no investment on engineered systems: customers do not have the choice to deploy on a Java ultra fast system if their project becomes relevant and performance issues are detected. - WebLogic Server 12c maintains a performance gain across each new release: starting on WebLogic 5.1, the overall performance gain has been close to 4X, which close to a 20% gain release by release. JBoss on the other hand does not provide SPECJAppServer or SPECJEnterprise performance benchmarks. Their so called "performance gains" remains hidden in their customer environments, which lead us to think if it is true or not since we will never get access to those environments. - WebLogic Server 12c has industry performance benchmarks with submissions across platforms and configurations leading SPECJ. Oracle WebLogic leads SPECJAppServer performance in multiple categories, fitting all customer topologies like: dual-node, single-node, multi-node and multi-node with RAC. JBoss... again, does not provide any SPECJAppServer performance benchmarks. - WebLogic Server 12c has a feature called work manager which allows your application to embrace new performance levels based on critical resource utilization of the CPUs usage. Work managers prioritizes work and allocates threads based on an execution model that takes into account administrator-defined parameters and actual run-time performance and throughput. JBoss EAP 6 on the other hand has no compared feature and probably they never will. Not supporting such feature like work managers, JBoss EAP 6 forces admin people and specially developers to uncover performance gains in a intrusive way, rewriting the code and doing performance refactorings. 11) Professional Services Support - WebLogic Server 12c and any other technology sold by Oracle give customers the possibility of hire OCS ("Oracle Consulting Services") to manage critical scenarios, deployment assistance of new applications, high skilled consultancy of architecture, best practices and people allocation together with customer teams. All OCS services are available without any restrictions, having the customer bought software from Oracle or just starting their implementation before any acquisition. JBoss EAP 6 or Red Hat to be more specifically, only offers professional services if you buy subscriptions from them. If you are developing a new critical application for your business and need the help of Red Hat for a serious issue or architecture decision, they will probably say: "OK... I can help you but after you buy subscriptions from me". Red Hat also does not allows their professional services consultants to manage environments that uses community based software. They will probably force you to first buy a subscription, download their "enterprise" version and them, optionally hire their consultants. - Oracle provides you our university to educate your team into our technologies, including of course specialized trainings of WebLogic application server. At any time and location, you can hire Oracle to train your team so you get trustful knowledge according to your specific needs. Certifications for the products are also available if your technical people desire to differentiate themselves as professionals. Red Hat on the other hand have a limited pool of resources to train your team in their technologies. Basically they are selling training and certification for RHEL ("Red Hat Enterprise Linux") but if you demand more specialized training in JBoss middleware, they will probably connect you to some "certified" partner localized training since they are apparently discontinuing their education center, at least here in Brazil. They were not able to reproduce their success with RHEL education to their middleware division since they need first sell the subscriptions to after gives you specialized training. And again, they only offer you specialized training based on their enterprise version (EAP in the case of JBoss) which means that the courses will be a quite outdated. There are reports of developers that took official training's from Red Hat at this year (2012) and in a certain JBoss advanced course, Red Hat supposedly covered JBossMQ as the messaging subsystem, and even the printed material provided was based on JBossMQ since the training was created for JBoss EAP 4.3. 12) Encouraging Transparency without Ulterior Motives - WebLogic Server 12c like any other software from Oracle can be downloaded any time from anywhere, you should only possess an OTN ("Oracle Technology Network") credential and you can download any enterprise software how many times you want. And is not some kind of "trial" version. It is the official binaries that will be running for ever in your data center. Oracle does not encourages the usage of "specific versions" of our software. The binaries you buy from Oracle are the same binaries anyone in the world could download and use for testing and personal education. JBoss EAP 6 on the other hand are not available for download unless you buy a subscription and get access to the Red Hat enterprise repositories. If you need to test, learn or just start creating your application using Red Hat's middleware software, you should download it from the community website. You are not allowed to download the enterprise version that, according to Red Hat are more secure, reliable and robust. But no one of us want to start the development of a software with an unsecured, unreliable and not scalable middleware right? So what you do? You are "invited" by Red Hat to buy subscriptions from them to get access to the "cool" version of the software. - WebLogic Server 12c prices are publicly available in the Oracle website. If you want to know right now how much WebLogic will cost to your organization, just click here and get access to our price list. In the case of WebLogic, check out the "US Oracle Technology Commercial Price List". Oracle also encourages you to get in touch with a sales representative to discuss discounts that would make possible the investment into our technology. But you are not required to do this, only if you are interested in buying our technology or maybe you want to discuss some discount scenarios. JBoss EAP 6 on the other hand does not have its cost publicly available in Red Hat's website or in any other media, at least is not so easy to get such information. The only link you will possibly find in their website is a "Contact a Sales Representative" link. This is not a very good relationship between an customer and an vendor. This is not an example of transparency, mainly when the software are sold as open. In this situations, customers expects to see the software prices publicly available, so they can have the chance to decide, based on the existing features of the software, if the cost is fair or not. Conclusion Oracle WebLogic is the most mature, secure, reliable and scalable Java EE application server of the market, and have a proven record of success around the globe to prove it's majority. Don't lose the chance to discover today how WebLogic could fit your needs and sustain your global IT middleware strategy, no matter if your strategy are completely based on the Cloud or not.

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• Cisco ASA 5505 - L2TP over IPsec

  - by xraminx

  I have followed this document on cisco site to set up the L2TP over IPsec connection. When I try to establish a VPN to ASA 5505 from my Windows XP, after I click on "connect" button, the "Connecting ...." dialog box appears and after a while I get this error message: Error 800: Unable to establish VPN connection. The VPN server may be unreachable, or security parameters may not be configured properly for this connection. ASA version 7.2(4) ASDM version 5.2(4) Windows XP SP3 Windows XP and ASA 5505 are on the same LAN for test purposes. Edit 1: There are two VLANs defined on the cisco device (the standard setup on cisco ASA5505). - port 0 is on VLAN2, outside; - and ports 1 to 7 on VLAN1, inside. I run a cable from my linksys home router (10.50.10.1) to the cisco ASA5505 router on port 0 (outside). Port 0 have IP 192.168.1.1 used internally by cisco and I have also assigned the external IP 10.50.10.206 to port 0 (outside). I run a cable from Windows XP to Cisco router on port 1 (inside). Port 1 is assigned an IP from Cisco router 192.168.1.2. The Windows XP is also connected to my linksys home router via wireless (10.50.10.141). Edit 2: When I try to establish vpn, the Cisco device real time Log viewer shows 7 entries like this: Severity:5 Date:Sep 15 2009 Time: 14:51:29 SyslogID: 713904 Destination IP = 10.50.10.141, Decription: No crypto map bound to interface... dropping pkt Edit 3: This is the setup on the router right now. Result of the command: "show run" : Saved : ASA Version 7.2(4) ! hostname ciscoasa domain-name default.domain.invalid enable password HGFHGFGHFHGHGFHGF encrypted passwd NMMNMNMNMNMNMN encrypted names name 192.168.1.200 WebServer1 name 10.50.10.206 external-ip-address ! interface Vlan1 nameif inside security-level 100 ip address 192.168.1.1 255.255.255.0 ! interface Vlan2 nameif outside security-level 0 ip address external-ip-address 255.0.0.0 ! interface Vlan3 no nameif security-level 50 no ip address ! interface Ethernet0/0 switchport access vlan 2 ! interface Ethernet0/1 ! interface Ethernet0/2 ! interface Ethernet0/3 ! interface Ethernet0/4 ! interface Ethernet0/5 ! interface Ethernet0/6 ! interface Ethernet0/7 ! ftp mode passive dns server-group DefaultDNS domain-name default.domain.invalid object-group service l2tp udp port-object eq 1701 access-list outside_access_in remark Allow incoming tcp/http access-list outside_access_in extended permit tcp any host WebServer1 eq www access-list outside_access_in extended permit udp any any eq 1701 access-list inside_nat0_outbound extended permit ip any 192.168.1.208 255.255.255.240 access-list inside_cryptomap_1 extended permit ip interface outside interface inside pager lines 24 logging enable logging asdm informational mtu inside 1500 mtu outside 1500 ip local pool PPTP-VPN 192.168.1.210-192.168.1.220 mask 255.255.255.0 icmp unreachable rate-limit 1 burst-size 1 asdm image disk0:/asdm-524.bin no asdm history enable arp timeout 14400 global (outside) 1 interface nat (inside) 0 access-list inside_nat0_outbound nat (inside) 1 0.0.0.0 0.0.0.0 static (inside,outside) tcp interface www WebServer1 www netmask 255.255.255.255 access-group outside_access_in in interface outside timeout xlate 3:00:00 timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02 timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00 timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00 timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute http server enable http 192.168.1.0 255.255.255.0 inside no snmp-server location no snmp-server contact snmp-server enable traps snmp authentication linkup linkdown coldstart crypto ipsec transform-set TRANS_ESP_3DES_SHA esp-3des esp-sha-hmac crypto ipsec transform-set TRANS_ESP_3DES_SHA mode transport crypto ipsec transform-set TRANS_ESP_3DES_MD5 esp-3des esp-md5-hmac crypto ipsec transform-set TRANS_ESP_3DES_MD5 mode transport crypto map outside_map 1 match address inside_cryptomap_1 crypto map outside_map 1 set transform-set TRANS_ESP_3DES_MD5 crypto map outside_map interface inside crypto isakmp enable outside crypto isakmp policy 10 authentication pre-share encryption 3des hash md5 group 2 lifetime 86400 telnet timeout 5 ssh timeout 5 console timeout 0 dhcpd auto_config outside ! dhcpd address 192.168.1.2-192.168.1.33 inside dhcpd enable inside ! group-policy DefaultRAGroup internal group-policy DefaultRAGroup attributes dns-server value 192.168.1.1 vpn-tunnel-protocol IPSec l2tp-ipsec username myusername password FGHFGHFHGFHGFGFHF nt-encrypted tunnel-group DefaultRAGroup general-attributes address-pool PPTP-VPN default-group-policy DefaultRAGroup tunnel-group DefaultRAGroup ipsec-attributes pre-shared-key * tunnel-group DefaultRAGroup ppp-attributes no authentication chap authentication ms-chap-v2 ! ! prompt hostname context Cryptochecksum:a9331e84064f27e6220a8667bf5076c1 : end

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• HAProxy: Display a "BADREQ" | BADREQ's by the thousands

  - by GruffTech

  My HAProxy Configuration. #HA-Proxy version 1.3.22 2009/10/14 Copyright 2000-2009 Willy Tarreau <[email protected]> global maxconn 10000 spread-checks 50 user haproxy group haproxy daemon stats socket /tmp/haproxy log localhost local0 log localhost local1 notice defaults mode http maxconn 50000 timeout client 10000 option forwardfor except 127.0.0.1 option httpclose option httplog listen dcaustin 0.0.0.0:80 mode http timeout connect 12000 timeout server 60000 timeout queue 120000 balance roundrobin option httpchk GET /index.html log global option httplog option dontlog-normal server web1 10.10.10.101:80 maxconn 300 check fall 1 server web2 10.10.10.102:80 maxconn 300 check fall 1 server web3 10.10.10.103:80 maxconn 300 check fall 1 server web4 10.10.10.104:80 maxconn 300 check fall 1 listen stats 0.0.0.0:9000 mode http balance log global timeout client 5000 timeout connect 4000 timeout server 30000 stats uri /haproxy HAProxy is running, and the socket is working... adam@dcaustin:/etc/haproxy# echo "show info" | socat stdio /tmp/haproxy Name: HAProxy Version: 1.3.22 Release_date: 2009/10/14 Nbproc: 1 Process_num: 1 Pid: 6320 Uptime: 0d 0h14m58s Uptime_sec: 898 Memmax_MB: 0 Ulimit-n: 20017 Maxsock: 20017 Maxconn: 10000 Maxpipes: 0 CurrConns: 47 PipesUsed: 0 PipesFree: 0 Tasks: 51 Run_queue: 1 node: dcaustin desiption: Errors show nothing from socket... adam@dcaustin:/etc/haproxy# echo "show errors" | socat stdio /tmp/haproxy adam@dcaustin:/etc/haproxy# However... My Error log is exploding with "badrequests" with the Error code cR. cR (according to 1.3 documentation) is The "timeout http-request" stroke before the client sent a full HTTP request. This is sometimes caused by too large TCP MSS values on the client side for PPPoE networks which cannot transport full-sized packets, or by clients sending requests by hand and not typing fast enough, or forgetting to enter the empty line at the end of the request. The HTTP status code is likely a 408 here. Correct on the 408, but we're getting literally thousands of these requests every hour. (This log snippet is an clip for about 10 seconds of time...) Jun 30 11:08:52 localhost haproxy[6320]: 92.22.213.32:26448 [30/Jun/2011:11:08:42.384] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10002 408 212 - - cR-- 35/35/18/0/0 0/0 "<BADREQ>" Jun 30 11:08:54 localhost haproxy[6320]: 71.62.130.24:62818 [30/Jun/2011:11:08:44.457] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10001 408 212 - - cR-- 39/39/16/0/0 0/0 "<BADREQ>" Jun 30 11:08:55 localhost haproxy[6320]: 84.73.75.236:3589 [30/Jun/2011:11:08:45.021] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10008 408 212 - - cR-- 35/35/15/0/0 0/0 "<BADREQ>" Jun 30 11:08:55 localhost haproxy[6320]: 69.39.20.190:49969 [30/Jun/2011:11:08:45.709] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10000 408 212 - - cR-- 37/37/16/0/0 0/0 "<BADREQ>" Jun 30 11:08:56 localhost haproxy[6320]: 2.29.0.9:58772 [30/Jun/2011:11:08:46.846] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10001 408 212 - - cR-- 43/43/22/0/0 0/0 "<BADREQ>" Jun 30 11:08:57 localhost haproxy[6320]: 212.139.250.242:57537 [30/Jun/2011:11:08:47.568] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10000 408 212 - - cR-- 42/42/21/0/0 0/0 "<BADREQ>" Jun 30 11:08:58 localhost haproxy[6320]: 74.79.195.75:55046 [30/Jun/2011:11:08:48.559] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10000 408 212 - - cR-- 46/46/24/0/0 0/0 "<BADREQ>" Jun 30 11:08:58 localhost haproxy[6320]: 74.79.195.75:55044 [30/Jun/2011:11:08:48.554] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10004 408 212 - - cR-- 45/45/24/0/0 0/0 "<BADREQ>" Jun 30 11:08:58 localhost haproxy[6320]: 74.79.195.75:55045 [30/Jun/2011:11:08:48.554] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10005 408 212 - - cR-- 44/44/24/0/0 0/0 "<BADREQ>" Jun 30 11:09:00 localhost haproxy[6320]: 68.197.56.2:52781 [30/Jun/2011:11:08:50.975] dcaustin dcaustin/<NOSRV> -1/-1/-1/-1/10000 408 212 - - cR-- 49/49/28/0/0 0/0 "<BADREQ>" From what I read on google, if i wanted to see what the bad requests are, I can show errors to the socket and it will spit them out. We do run a pretty heavily trafficed website and the percentage of "BADREQS" to normal requests is quite low, but I'd like to be able to get ahold of what that request WAS so I can debug it. stats # pxname,svname,qcur,qmax,scur,smax,slim,stot,bin,bout,dreq,dresp,ereq,econ,eresp,wretr,wredis,status,weight,act,bck,chkfail,chkdown,lastchg,downtime,qlimit,pid,iid,sid,throttle,lbtot,tracked,type,rate,rate_lim,rate_max, dcaustin,FRONTEND,,,64,120,50000,88433,105889100,2553809875,0,0,4641,,,,,OPEN,,,,,,,,,1,1,0,,,,0,45,0,128, dcaustin,web1,0,0,10,28,300,20941,25402112,633143416,,0,,0,3,0,0,UP,1,1,0,0,0,2208,0,,1,1,1,,20941,,2,11,,30, dcaustin,web2,0,0,9,30,300,20941,25026691,641475169,,0,,0,3,0,0,UP,1,1,0,0,0,2208,0,,1,1,2,,20941,,2,11,,30, dcaustin,web3,0,0,10,27,300,20940,30116527,635015040,,0,,0,9,0,0,UP,1,1,0,0,0,2208,0,,1,1,3,,20940,,2,10,,31, dcaustin,web4,0,0,5,28,300,20940,25343770,643209546,,0,,0,8,0,0,UP,1,1,0,0,0,2208,0,,1,1,4,,20940,,2,11,,31, dcaustin,BACKEND,0,0,34,95,50000,83762,105889100,2553809875,0,0,,0,34,0,0,UP,4,4,0,,0,2208,0,,1,1,0,,83762,,1,43,,122, 88500 "Sessions" and 4500 errors. in the last 20 minutes.

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• apache eat up too many ram per child

  - by mrc4r7m4n

  Hello to everyone. I've got fallowing problem: Apache eat to many ram per child. The fallowing comments shows: cat /etc/redhat-release -- Fedora release 8 (Werewolf) free -m: total used free shared buffers cached Mem: 3566 3136 429 0 339 1907 -/+ buffers/cache: 889 2676 Swap: 4322 0 4322 I know that you will say that there is nothing to worry about because swap is not use, but i think it's not use for now. 3.httpd -v: Server version: Apache/2.2.14 (Unix) 4.httpd -l: Compiled in modules: core.c mod_authn_file.c mod_authn_default.c mod_authz_host.c mod_authz_groupfile.c mod_authz_user.c mod_authz_default.c mod_auth_basic.c mod_include.c mod_filter.c mod_log_config.c mod_env.c mod_setenvif.c mod_version.c mod_ssl.c prefork.c http_core.c mod_mime.c mod_status.c mod_autoindex.c mod_asis.c mod_cgi.c mod_negotiation.c mod_dir.c mod_actions.c mod_userdir.c mod_alias.c mod_rewrite.c mod_so.c 5.List of loaded dynamic modules: LoadModule authz_host_module modules/mod_authz_host.so LoadModule include_module modules/mod_include.so LoadModule log_config_module modules/mod_log_config.so LoadModule setenvif_module modules/mod_setenvif.so LoadModule mime_module modules/mod_mime.so LoadModule autoindex_module modules/mod_autoindex.so LoadModule vhost_alias_module modules/mod_vhost_alias.so LoadModule negotiation_module modules/mod_negotiation.so LoadModule dir_module modules/mod_dir.so LoadModule alias_module modules/mod_alias.so LoadModule rewrite_module modules/mod_rewrite.so LoadModule proxy_module modules/mod_proxy.so LoadModule cgi_module modules/mod_cgi.so 6.My prefrok directive <IfModule prefork.c> StartServers 8 MinSpareServers 5 MaxSpareServers 25 ServerLimit 80 MaxClients 80 MaxRequestsPerChild 4000 </IfModule> KeepAliveTimeout 6 MaxKeepAliveRequests 100 KeepAlive On 7.top -u apache: ctrl+ M top - 09:19:42 up 2 days, 19 min, 2 users, load average: 0.85, 0.87, 0.80 Tasks: 113 total, 1 running, 112 sleeping, 0 stopped, 0 zombie Cpu(s): 7.3%us, 15.7%sy, 0.0%ni, 75.7%id, 0.0%wa, 0.7%hi, 0.7%si, 0.0%st Mem: 3652120k total, 3149964k used, 502156k free, 348048k buffers Swap: 4425896k total, 0k used, 4425896k free, 1944952k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 16956 apache 20 0 700m 135m 100m S 0.0 3.8 2:16.78 httpd 16953 apache 20 0 565m 130m 96m S 0.0 3.7 1:57.26 httpd 16957 apache 20 0 587m 129m 102m S 0.0 3.6 1:47.41 httpd 16955 apache 20 0 567m 126m 93m S 0.0 3.6 1:43.60 httpd 17494 apache 20 0 626m 125m 96m S 0.0 3.5 1:58.77 httpd 17515 apache 20 0 540m 120m 88m S 0.0 3.4 1:45.57 httpd 17516 apache 20 0 573m 120m 88m S 0.0 3.4 1:50.51 httpd 16954 apache 20 0 551m 120m 88m S 0.0 3.4 1:52.47 httpd 17493 apache 20 0 586m 120m 94m S 0.0 3.4 1:51.02 httpd 17279 apache 20 0 568m 117m 87m S 16.0 3.3 1:51.87 httpd 17302 apache 20 0 560m 116m 90m S 0.3 3.3 1:59.06 httpd 17495 apache 20 0 551m 116m 89m S 0.0 3.3 1:47.51 httpd 17277 apache 20 0 476m 114m 81m S 0.0 3.2 1:37.14 httpd 30097 apache 20 0 536m 113m 83m S 0.0 3.2 1:47.38 httpd 30112 apache 20 0 530m 112m 81m S 0.0 3.2 1:40.15 httpd 17513 apache 20 0 516m 112m 85m S 0.0 3.1 1:43.92 httpd 16958 apache 20 0 554m 111m 82m S 0.0 3.1 1:44.18 httpd 1617 apache 20 0 487m 111m 85m S 0.0 3.1 1:31.67 httpd 16952 apache 20 0 461m 107m 75m S 0.0 3.0 1:13.71 httpd 16951 apache 20 0 462m 103m 76m S 0.0 2.9 1:28.05 httpd 17278 apache 20 0 497m 103m 76m S 0.0 2.9 1:31.25 httpd 17403 apache 20 0 537m 102m 79m S 0.0 2.9 1:52.24 httpd 25081 apache 20 0 412m 101m 70m S 0.0 2.8 1:01.74 httpd I guess thats all information needed to help me solve this problem. I think the virt memory is to big, the same res. The consumption of ram is increasing all the time. Maybe it's memory leak because i see there is so many static modules compiled. Could someone help me with this issue? Thank you in advance.

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• sendmail can not relay from itself

  - by Bernie

  I am running 3 centos 5.2 servers and I have configured the server for forward all messages to root to be emailed to me via .forward rule. This is working fine on two of the servers but not on the third. I have also tried copying the mail config files from the backup server and placing them on the file server and restarting sendmail. I also removed and reinstalled sendmail via yum but the results are the same. I am not sure what the issue could be they are all standard centos installs. Here is an example from the backup server which is working and the fileserver which isn't I am also going to include the mail log. good from backup server [root@backup ]# sendmail -v [email protected] < test.mail [email protected]... Connecting to [127.0.0.1] via relay... 220 backup.localhost ESMTP Sendmail 8.13.8/8.13.8; Fri, 16 Oct 2009 10:23:50 -0700 >>> EHLO backup.localhost 250-backup.localhost Hello backup.localhost [127.0.0.1], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-DELIVERBY 250 HELP >>> MAIL From:<[email protected]> SIZE=73 250 2.1.0 <[email protected]>... Sender ok >>> RCPT To:<[email protected]> >>> DATA 250 2.1.5 <[email protected]>... Recipient ok 354 Enter mail, end with "." on a line by itself >>> . 250 2.0.0 n9GHNoGC020924 Message accepted for delivery [email protected]... Sent (n9GHNoGC020924 Message accepted for delivery) Closing connection to [127.0.0.1] >>> QUIT 221 2.0.0 backup.localhost closing connection bad from file server [root@fileserver bernie]# sendmail -v [email protected] < test.mail [email protected]... Connecting to [127.0.0.1] via relay... 220 fileserver.localhost ESMTP Sendmail 8.13.8/8.13.8; Fri, 16 Oct 2009 10:23:26 -0700 >>> EHLO fileserver.localhost 250-fileserver.localhost Hello fileserver.localhost [127.0.0.1], pleased to meet you 250 ENHANCEDSTATUSCODES >>> MAIL From:<[email protected]> 550 5.0.0 Access denied root... Using cached ESMTP connection to [127.0.0.1] via relay... >>> RSET 250 2.0.0 Reset state >>> MAIL From:<> 550 5.0.0 Access denied postmaster... Using cached ESMTP connection to [127.0.0.1] via relay... >>> RSET 250 2.0.0 Reset state >>> MAIL From:<> 550 5.0.0 Access denied Closing connection to [127.0.0.1] >>> QUIT 221 2.0.0 fileserver.localhost closing connection mail log Oct 16 10:39:13 fileserver sendmail[28059]: n9GHdDom028059: from=root, size=72, class=0, nrcpts=1, msgid=<[email protected]>, relay=root@localhost Oct 16 10:39:13 fileserver sendmail[28060]: n9GHdDwl028060: tcpwrappers (fileserver.localhost, 127.0.0.1) rejection Oct 16 10:39:13 fileserver sendmail[28059]: n9GHdDom028059: [email protected], ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30072, relay=[127.0.0.1] [127.0.0.1], dsn=5.0.0, stat=Service unavailable Oct 16 10:39:13 fileserver sendmail[28059]: n9GHdDom028059: n9GHdDon028059: DSN: Service unavailable Oct 16 10:39:13 fileserver sendmail[28059]: n9GHdDon028059: to=root, delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=31096, relay=[127.0.0.1], dsn=5.0.0, stat=Service unavailable Oct 16 10:39:13 fileserver sendmail[28059]: n9GHdDon028059: n9GHdDoo028059: return to sender: Service unavailable Oct 16 10:39:13 fileserver sendmail[28059]: n9GHdDoo028059: to=postmaster, delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=32120, relay=[127.0.0.1], dsn=5.0.0, stat=Service unavailable Oct 16 10:39:13 fileserver sendmail[28059]: n9GHdDon028059: Losing ./qfn9GHdDon028059: savemail panic Oct 16 10:39:13 fileserver sendmail[28059]: n9GHdDon028059: SYSERR(root): savemail: cannot save rejected email anywhere

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• installed openstack using devstack install shell script but getting 500 error when i try opening dashboard

  - by Arvind

  I followed the instructions at http://devstack.org/guides/single-machine.html to install OpenStack. I first installed Ubuntu on my Windows 7 PC using the officially supported Windows installer for Ubuntu 12.04 LTS. And after that I followed the instructions at above page to install OpenStack. As per instructions, I should be able to access the dashboard aka Horizon, at http://192.168.1.4/ (thats the IP of the PC on which I installed Ubuntu-OpenStack). However I am getting a 500 error web page when I open that. How do I resolve this error? I want to set up a dev environment for OpenStack. For your ref, the whole error message is given now-- FilterError at / /usr/bin/env: node: No such file or directory Request Method: GET Request URL: http://192.168.1.4/ Django Version: 1.4.2 Exception Type: FilterError Exception Value: /usr/bin/env: node: No such file or directory Exception Location: /usr/local/lib/python2.7/dist-packages/compressor/filters/base.py in input, line 133 Python Executable: /usr/bin/python Python Version: 2.7.3 Python Path: ['/opt/stack/horizon/openstack_dashboard/wsgi/../..', '/opt/stack/python-keystoneclient', '/opt/stack/python-novaclient', '/opt/stack/python-openstackclient', '/opt/stack/keystone', '/opt/stack/glance', '/opt/stack/python-glanceclient/setuptools_git-0.4.2-py2.7.egg', '/opt/stack/python-glanceclient', '/opt/stack/nova', '/opt/stack/horizon', '/opt/stack/cinder', '/opt/stack/python-cinderclient', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-linux2', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/PIL', '/usr/lib/python2.7/dist-packages/gst-0.10', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/pymodules/python2.7', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client', '/usr/lib/python2.7/dist-packages/ubuntuone-client', '/usr/lib/python2.7/dist-packages/ubuntuone-control-panel', '/usr/lib/python2.7/dist-packages/ubuntuone-couch', '/usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol', '/opt/stack/horizon/openstack_dashboard'] Server time: Sat, 27 Oct 2012 08:43:29 +0000 Error during template rendering In template /opt/stack/horizon/openstack_dashboard/templates/_stylesheets.html, error at line 3 /usr/bin/env: node: No such file or directory 1 {% load compress %} 2 3 {% compress css %} 4 <link href='{{ STATIC_URL }}dashboard/less/horizon.less' type='text/less' media='screen' rel='stylesheet' /> 5 {% endcompress %} 6 7 <link rel="shortcut icon" href="{{ STATIC_URL }}dashboard/img/favicon.ico"/> 8 Also, the traceback is now given below-- Environment: Request Method: GET Request URL: http://192.168.1.4/ Django Version: 1.4.2 Python Version: 2.7.3 Installed Applications: ('openstack_dashboard', 'django.contrib.contenttypes', 'django.contrib.auth', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'django.contrib.humanize', 'compressor', 'horizon', 'openstack_dashboard.dashboards.project', 'openstack_dashboard.dashboards.admin', 'openstack_dashboard.dashboards.settings', 'openstack_auth') Installed Middleware: ('django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'horizon.middleware.HorizonMiddleware', 'django.middleware.doc.XViewMiddleware', 'django.middleware.locale.LocaleMiddleware') Template error: In template /opt/stack/horizon/openstack_dashboard/templates/_stylesheets.html, error at line 3 /usr/bin/env: node: No such file or directory 1 : {% load compress %} 2 : 3 : {% compress css %} 4 : <link href='{{ STATIC_URL }}dashboard/less/horizon.less' type='text/less' media='screen' rel='stylesheet' /> 5 : {% endcompress %} 6 : 7 : <link rel="shortcut icon" href="{{ STATIC_URL }}dashboard/img/favicon.ico"/> 8 : Traceback: File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response 111. response = callback(request, *callback_args, **callback_kwargs) File "/usr/local/lib/python2.7/dist-packages/django/views/decorators/vary.py" in inner_func 36. response = func(*args, **kwargs) File "/opt/stack/horizon/openstack_dashboard/wsgi/../../openstack_dashboard/views.py" in splash 38. return shortcuts.render(request, 'splash.html', {'form': form}) File "/usr/local/lib/python2.7/dist-packages/django/shortcuts/__init__.py" in render 44. return HttpResponse(loader.render_to_string(*args, **kwargs), File "/usr/local/lib/python2.7/dist-packages/django/template/loader.py" in render_to_string 176. return t.render(context_instance) File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 140. return self._render(context) File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in _render 134. return self.nodelist.render(context) File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 823. bit = self.render_node(node, context) File "/usr/local/lib/python2.7/dist-packages/django/template/debug.py" in render_node 74. return node.render(context) File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py" in render 155. return self.render_template(self.template, context) File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py" in render_template 137. output = template.render(context) File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 140. return self._render(context) File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in _render 134. return self.nodelist.render(context) File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 823. bit = self.render_node(node, context) File "/usr/local/lib/python2.7/dist-packages/django/template/debug.py" in render_node 74. return node.render(context) File "/usr/local/lib/python2.7/dist-packages/compressor/templatetags/compress.py" in render 147. return self.render_compressed(context, self.kind, self.mode, forced=forced) File "/usr/local/lib/python2.7/dist-packages/compressor/templatetags/compress.py" in render_compressed 107. rendered_output = self.render_output(compressor, mode, forced=forced) File "/usr/local/lib/python2.7/dist-packages/compressor/templatetags/compress.py" in render_output 119. return compressor.output(mode, forced=forced) File "/usr/local/lib/python2.7/dist-packages/compressor/css.py" in output 51. ret.append(subnode.output(*args, **kwargs)) File "/usr/local/lib/python2.7/dist-packages/compressor/css.py" in output 53. return super(CssCompressor, self).output(*args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/compressor/base.py" in output 230. content = self.filter_input(forced) File "/usr/local/lib/python2.7/dist-packages/compressor/base.py" in filter_input 192. for hunk in self.hunks(forced): File "/usr/local/lib/python2.7/dist-packages/compressor/base.py" in hunks 167. precompiled, value = self.precompile(value, **options) File "/usr/local/lib/python2.7/dist-packages/compressor/base.py" in precompile 210. command=command, filename=filename).input(**kwargs) File "/usr/local/lib/python2.7/dist-packages/compressor/filters/base.py" in input 133. raise FilterError(err) Exception Type: FilterError at / Exception Value: /usr/bin/env: node: No such file or directory

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• Detecting source of memory usage on a Linux box

  - by apeace

  I have a toy Linux box with 256mb RAM running Ubuntu 10.04.1 LTS. Here is the output of free -m: total used free shared buffers cached Mem: 245 122 122 0 19 64 -/+ buffers/cache: 38 206 Swap: 511 0 511 Unless I'm reading this wrong, 122mb is being used and only 84mb of that is disk cache. Here are all processes I'm running sorted by memory usage (ps -eo pmem,pcpu,rss,vsize,args | sort -k 1 -r): %MEM %CPU RSS VSZ COMMAND 5.0 0.0 12648 633140 node /home/node/main/sites.js 1.5 0.0 3884 251736 /usr/sbin/console-kit-daemon --no-daemon 1.3 0.0 3328 77108 sshd: apeace [priv] 0.9 0.0 2344 19624 -bash 0.7 0.0 1776 23620 /sbin/init 0.6 0.0 1624 77108 sshd: apeace@pts/0 0.6 0.0 1544 9940 redis-server /etc/redis/redis.conf 0.6 0.0 1524 25848 /usr/sbin/ntpd -p /var/run/ntpd.pid -g -u 103:105 0.5 0.0 1324 119880 rsyslogd -c4 0.4 0.0 1084 49308 /usr/sbin/sshd 0.4 0.0 1028 44376 /usr/sbin/exim4 -bd -q30m 0.3 0.0 904 6876 ps -eo pmem,pcpu,rss,vsize,args 0.3 0.0 888 21124 cron 0.3 0.0 868 23472 dbus-daemon --system --fork 0.2 0.0 732 19624 -bash 0.2 0.0 628 6128 /sbin/getty -8 38400 tty1 0.2 0.0 628 16952 upstart-udev-bridge --daemon 0.2 0.0 564 16800 udevd --daemon 0.2 0.0 552 16796 udevd --daemon 0.2 0.0 548 16796 udevd --daemon 0.0 0.0 0 0 [xenwatch] 0.0 0.0 0 0 [xenbus] 0.0 0.0 0 0 [sync_supers] 0.0 0.0 0 0 [netns] 0.0 0.0 0 0 [migration/3] 0.0 0.0 0 0 [migration/2] 0.0 0.0 0 0 [migration/1] 0.0 0.0 0 0 [migration/0] 0.0 0.0 0 0 [kthreadd] 0.0 0.0 0 0 [kswapd0] 0.0 0.0 0 0 [kstriped] 0.0 0.0 0 0 [ksoftirqd/3] 0.0 0.0 0 0 [ksoftirqd/2] 0.0 0.0 0 0 [ksoftirqd/1] 0.0 0.0 0 0 [ksoftirqd/0] 0.0 0.0 0 0 [ksnapd] 0.0 0.0 0 0 [kseriod] 0.0 0.0 0 0 [kjournald] 0.0 0.0 0 0 [khvcd] 0.0 0.0 0 0 [khelper] 0.0 0.0 0 0 [kblockd/3] 0.0 0.0 0 0 [kblockd/2] 0.0 0.0 0 0 [kblockd/1] 0.0 0.0 0 0 [kblockd/0] 0.0 0.0 0 0 [flush-202:1] 0.0 0.0 0 0 [events/3] 0.0 0.0 0 0 [events/2] 0.0 0.0 0 0 [events/1] 0.0 0.0 0 0 [events/0] 0.0 0.0 0 0 [crypto/3] 0.0 0.0 0 0 [crypto/2] 0.0 0.0 0 0 [crypto/1] 0.0 0.0 0 0 [crypto/0] 0.0 0.0 0 0 [cpuset] 0.0 0.0 0 0 [bdi-default] 0.0 0.0 0 0 [async/mgr] 0.0 0.0 0 0 [aio/3] 0.0 0.0 0 0 [aio/2] 0.0 0.0 0 0 [aio/1] 0.0 0.0 0 0 [aio/0] Now, I know that ps is not the best for viewing process memory usage, but that's because it tends to report more memory than is actually being used...meaning no matter how you look at it all my processes combined shouldn't be using near 122mb, even if you account for the disk cache. What's more, memory usage is growing all the time. I've had to restart my server once a week, because once my 256mb fills up it starts swapping, which it wouldn't do just for disk cache. Shouldn't there be some way for me to see the culprit?! I'm new to server admin, so please if there's something obvious I'm overlooking point it out to me. Just for good measure, the output of cat /proc/meminfo: MemTotal: 251140 kB MemFree: 124604 kB Buffers: 20536 kB Cached: 66136 kB SwapCached: 0 kB Active: 65004 kB Inactive: 37576 kB Active(anon): 15932 kB Inactive(anon): 164 kB Active(file): 49072 kB Inactive(file): 37412 kB Unevictable: 0 kB Mlocked: 0 kB SwapTotal: 524284 kB SwapFree: 524284 kB Dirty: 8 kB Writeback: 0 kB AnonPages: 15916 kB Mapped: 10668 kB Shmem: 188 kB Slab: 18604 kB SReclaimable: 10088 kB SUnreclaim: 8516 kB KernelStack: 536 kB PageTables: 1444 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 649852 kB Committed_AS: 64224 kB VmallocTotal: 34359738367 kB VmallocUsed: 752 kB VmallocChunk: 34359737600 kB DirectMap4k: 262144 kB DirectMap2M: 0 kB EDIT: I had misinterpreted the meaning of free -m at first. But even so: the important thing is that my OS eventually begins to use swap memory if I don't restart my server, which disk caching wouldn't do. So where do I look to see what is using all this memory?

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• Custom SNMP Cacti Data Source fails to update

  - by Andrew Wilkinson

  I'm trying to create a custom SNMP datasource for Cacti but despite everything I can check being correct, it is not creating the rrd file, or updating it even when I create it. Other, standard SNMP sources are working correctly so it's not SNMP or permissions that are the problem. I've created a new Data Query, which when I click on "Verbose Query" on the device screen returns the following: + Running data query [10]. + Found type = '3' [SNMP Query]. + Found data query XML file at '/volume1/web/cacti/resource/snmp_queries/syno_volume_stats.xml' + XML file parsed ok. + missing in XML file, 'Index Count Changed' emulated by counting oid_index entries + Executing SNMP walk for list of indexes @ '.1.3.6.1.2.1.25.2.3.1.3' Index Count: 8 + Index found at OID: '.1.3.6.1.2.1.25.2.3.1.3.1' value: 'Physical memory' + Index found at OID: '.1.3.6.1.2.1.25.2.3.1.3.3' value: 'Virtual memory' + Index found at OID: '.1.3.6.1.2.1.25.2.3.1.3.6' value: 'Memory buffers' + Index found at OID: '.1.3.6.1.2.1.25.2.3.1.3.7' value: 'Cached memory' + Index found at OID: '.1.3.6.1.2.1.25.2.3.1.3.10' value: 'Swap space' + Index found at OID: '.1.3.6.1.2.1.25.2.3.1.3.31' value: '/' + Index found at OID: '.1.3.6.1.2.1.25.2.3.1.3.32' value: '/volume1' + Index found at OID: '.1.3.6.1.2.1.25.2.3.1.3.33' value: '/opt' + index_parse at OID: '.1.3.6.1.2.1.25.2.3.1.3.1' results: '1' + index_parse at OID: '.1.3.6.1.2.1.25.2.3.1.3.3' results: '3' + index_parse at OID: '.1.3.6.1.2.1.25.2.3.1.3.6' results: '6' + index_parse at OID: '.1.3.6.1.2.1.25.2.3.1.3.7' results: '7' + index_parse at OID: '.1.3.6.1.2.1.25.2.3.1.3.10' results: '10' + index_parse at OID: '.1.3.6.1.2.1.25.2.3.1.3.31' results: '31' + index_parse at OID: '.1.3.6.1.2.1.25.2.3.1.3.32' results: '32' + index_parse at OID: '.1.3.6.1.2.1.25.2.3.1.3.33' results: '33' + Located input field 'index' [walk] + Executing SNMP walk for data @ '.1.3.6.1.2.1.25.2.3.1.3' + Found item [index='Physical memory'] index: 1 [from value] + Found item [index='Virtual memory'] index: 3 [from value] + Found item [index='Memory buffers'] index: 6 [from value] + Found item [index='Cached memory'] index: 7 [from value] + Found item [index='Swap space'] index: 10 [from value] + Found item [index='/'] index: 31 [from value] + Found item [index='/volume1'] index: 32 [from value] + Found item [index='/opt'] index: 33 [from value] + Located input field 'volsizeunit' [walk] + Executing SNMP walk for data @ '.1.3.6.1.2.1.25.2.3.1.4' + Found item [volsizeunit='1024 Bytes'] index: 1 [from value] + Found item [volsizeunit='1024 Bytes'] index: 3 [from value] + Found item [volsizeunit='1024 Bytes'] index: 6 [from value] + Found item [volsizeunit='1024 Bytes'] index: 7 [from value] + Found item [volsizeunit='1024 Bytes'] index: 10 [from value] + Found item [volsizeunit='4096 Bytes'] index: 31 [from value] + Found item [volsizeunit='4096 Bytes'] index: 32 [from value] + Found item [volsizeunit='4096 Bytes'] index: 33 [from value] + Located input field 'volsize' [walk] + Executing SNMP walk for data @ '.1.3.6.1.2.1.25.2.3.1.5' + Found item [volsize='1034712'] index: 1 [from value] + Found item [volsize='3131792'] index: 3 [from value] + Found item [volsize='1034712'] index: 6 [from value] + Found item [volsize='775904'] index: 7 [from value] + Found item [volsize='2097080'] index: 10 [from value] + Found item [volsize='612766'] index: 31 [from value] + Found item [volsize='1439812394'] index: 32 [from value] + Found item [volsize='1439812394'] index: 33 [from value] + Located input field 'volused' [walk] + Executing SNMP walk for data @ '.1.3.6.1.2.1.25.2.3.1.6' + Found item [volused='1022520'] index: 1 [from value] + Found item [volused='1024096'] index: 3 [from value] + Found item [volused='32408'] index: 6 [from value] + Found item [volused='775904'] index: 7 [from value] + Found item [volused='1576'] index: 10 [from value] + Found item [volused='148070'] index: 31 [from value] + Found item [volused='682377865'] index: 32 [from value] + Found item [volused='682377865'] index: 33 [from value] AS you can see it appears to be returning the correct data. I've also set up data templates and graph templates to display the data. The create graphs for a device screen shows the correct data, and when selecting one row can clicking create a new data source and graph are created. Unfortunately the data source is never updated. Increasing the poller log level shows that it appears to not even be querying the data source, despite it being used? What should my next steps to debug this issue be?

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• How can I tell Firefox to ignore unprintable characters?

  - by BrianH

  Edit: Summary Apparently the intended character to display in this case is an "en-dash". This page has a table half way down that shows that for the &ndash;, some software will convert the correct hex code of 2013 to 0096. (look at the first row in the table). This answer on Stackoverflow explains that somehow this is a mixup between Windows-1252 and UTF-8 This blog article enforces this: Character 150 (0x96) is the unicode character "START OF GUARDED AREA" in the non-displayed C1 control character range, but in the Windows-1252 encoding it's mapped to to the displayable character 0x2013 "en-dash" (a short dash). Others have struggled with this when producing content, as this answer on Stackoverflow shows how to replace 0x0096 with 0x2013. Google must realize this, because as stated in my original question below, Google's cached version of the Amazon page has &ndash; so it seems they are automatically correcting these mistakes on pages they cache. I have tried setting my encoding to Windows-1252 but that does not help. So now I guess my question is, how can I tell Firefox to ignore unprintable characters like these? Original content below: (Firefox 3.6.13 on Windows XP) Every once in a while I notice an odd character on certain web pages when browsing the web. It is a outline of a box with a 4-digit number inside. And example of a page that has these characters is: http://aws.amazon.com/ec2/#highlights After each section heading (Elastic, Completely Controlled, ...) I see a box with the number "0096" inside. I looked at the cached version on Google, and google has &ndash; in it's place, so I'm guessing I should be seeing a dash there instead of the box with the numbers in it. I have tried changing the character encoding in Firefox but haven't been able to find one that shows these characters correctly. Is there a way to allow Firefox to view these characters? Thanks in advance! Edit - adding a screen shot of the "special" characters: Edit #2 - tried in Ubuntu - new screenshots I logged into my Ubuntu desktop and browsed to the amazon page in Chrome and Firefox. Chrome completely ignores character, even if I inspect or view page source. Firefox in Unbutu displays the character exactly like Firefox on my Windows XP box. I copied the character and played around with it at the command line - here is a screenshot of the results: It looks like I can paste the character into this post as well: `` It is definitely not isolated to Windows XP. I tried setting the character encoding for my terminal to Windows 1252 (from Dennis' comment below), but then it just displays this character as a question mark. I pulled the webpage down with wget and with curl, and both outputs show this characters as: <96> It makes me wonder if this character renders correctly for anyone? It appears webkit just ignores it, my IE6 ignores it, Firefox displays the box with the numbers in it. I would have to imagine the design team at Amazon can see it correctly? It's not a huge deal to get these characters displaying correctly, but it would be nice to know if there is a solution to this.

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• 2 drives, slow software RAID1 (md)

  - by bart613

  Hello, I've got a server from hetzner.de (EQ4) with 2* SAMSUNG HD753LJ drives (750G 32MB cache). OS is CentOS 5 (x86_64). Drives are combined together into two RAID1 partitions: /dev/md0 which is 512MB big and has only /boot partitions /dev/md1 which is over 700GB big and is one big LVM which hosts other partitions Now, I've been running some benchmarks and it seems like even though exactly the same drives, speed differs a bit on each of them. # hdparm -tT /dev/sda /dev/sda: Timing cached reads: 25612 MB in 1.99 seconds = 12860.70 MB/sec Timing buffered disk reads: 352 MB in 3.01 seconds = 116.80 MB/sec # hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 25524 MB in 1.99 seconds = 12815.99 MB/sec Timing buffered disk reads: 342 MB in 3.01 seconds = 113.64 MB/sec Also, when I run eg. pgbench which is stressing IO quite heavily, I can see following from iostat output: Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util sda 0.00 231.40 0.00 298.00 0.00 9683.20 32.49 0.17 0.58 0.34 10.24 sda1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda2 0.00 231.40 0.00 298.00 0.00 9683.20 32.49 0.17 0.58 0.34 10.24 sdb 0.00 231.40 0.00 301.80 0.00 9740.80 32.28 14.19 51.17 3.10 93.68 sdb1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdb2 0.00 231.40 0.00 301.80 0.00 9740.80 32.28 14.19 51.17 3.10 93.68 md1 0.00 0.00 0.00 529.60 0.00 9692.80 18.30 0.00 0.00 0.00 0.00 md0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 dm-0 0.00 0.00 0.00 0.60 0.00 4.80 8.00 0.00 0.00 0.00 0.00 dm-1 0.00 0.00 0.00 529.00 0.00 9688.00 18.31 24.51 49.91 1.81 95.92 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util sda 0.00 152.40 0.00 330.60 0.00 5176.00 15.66 0.19 0.57 0.19 6.24 sda1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda2 0.00 152.40 0.00 330.60 0.00 5176.00 15.66 0.19 0.57 0.19 6.24 sdb 0.00 152.40 0.00 326.20 0.00 5118.40 15.69 19.96 55.36 3.01 98.16 sdb1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdb2 0.00 152.40 0.00 326.20 0.00 5118.40 15.69 19.96 55.36 3.01 98.16 md1 0.00 0.00 0.00 482.80 0.00 5166.40 10.70 0.00 0.00 0.00 0.00 md0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 dm-0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 dm-1 0.00 0.00 0.00 482.80 0.00 5166.40 10.70 30.19 56.92 2.05 99.04 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util sda 0.00 181.64 0.00 324.55 0.00 5445.11 16.78 0.15 0.45 0.21 6.87 sda1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda2 0.00 181.64 0.00 324.55 0.00 5445.11 16.78 0.15 0.45 0.21 6.87 sdb 0.00 181.84 0.00 328.54 0.00 5493.01 16.72 18.34 61.57 3.01 99.00 sdb1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sdb2 0.00 181.84 0.00 328.54 0.00 5493.01 16.72 18.34 61.57 3.01 99.00 md1 0.00 0.00 0.00 506.39 0.00 5477.05 10.82 0.00 0.00 0.00 0.00 md0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 dm-0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 dm-1 0.00 0.00 0.00 506.39 0.00 5477.05 10.82 28.77 62.15 1.96 99.00 And this is completely getting me confused. How come two exactly the same specced drives have such a difference in write speed (see util%)? I haven't really paid attention to those speeds before, so perhaps that something normal -- if someone could confirm I would be really grateful. Otherwise, if someone have seen such behavior again or knows what is causing such behavior I would really appreciate answer. I'll also add that both "smartctl -a" and "hdparm -I" output are exactly the same and are not indicating any hardware problems. The slower drive was changed already two times (to new ones). Also I asked to change the drives with places, and then sda were slower and sdb quicker (so the slow one was the same drive). SATA cables were changed two times already.

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• How to install php-devel under CentOS 6.3 x64?

  - by Jeremy Dicaire

  I'm trying to install php-devel on my CentOS 6.3 VPS and get a failed dependencies test. From phpinfos(): SYSTEM Linux 2.6.32-279.5.2.el6.x86_64 #1 x86_64 NTS error: Failed dependencies: php(x86-64) = 5.4.6-1.el6.remi is needed by php-devel-5.4.6-1.el6.remi.x86_64 I've tried the following RPM packages: php54w-devel-5.4.6-1.w6.x86_64.rpm php-devel-5.4.6-1.el6.remi.i686.rpm php-devel-5.4.6-1.el6.remi.x86_64.rpm One of the above package gave me this: root@sv1 [/tmp]# rpm -Uvh php-devel-5.4.6-1.el6.remi.i686.rpm warning: php-devel-5.4.6-1.el6.remi.i686.rpm: Header V3 DSA/SHA1 Signature, key ID 00f97f56: NOKEY error: Failed dependencies: php(x86-32) = 5.4.6-1.el6.remi is needed by php-devel-5.4.6-1.el6.remi.i686 libbz2.so.1 is needed by php-devel-5.4.6-1.el6.remi.i686 libcom_err.so.2 is needed by php-devel-5.4.6-1.el6.remi.i686 libcrypto.so.10 is needed by php-devel-5.4.6-1.el6.remi.i686 libedit.so.0 is needed by php-devel-5.4.6-1.el6.remi.i686 libgmp.so.3 is needed by php-devel-5.4.6-1.el6.remi.i686 libgssapi_krb5.so.2 is needed by php-devel-5.4.6-1.el6.remi.i686 libk5crypto.so.3 is needed by php-devel-5.4.6-1.el6.remi.i686 libkrb5.so.3 is needed by php-devel-5.4.6-1.el6.remi.i686 libncurses.so.5 is needed by php-devel-5.4.6-1.el6.remi.i686 libssl.so.10 is needed by php-devel-5.4.6-1.el6.remi.i686 libstdc++.so.6 is needed by php-devel-5.4.6-1.el6.remi.i686 libxml2.so.2 is needed by php-devel-5.4.6-1.el6.remi.i686 libxml2.so.2(LIBXML2_2.4.30) is needed by php-devel-5.4.6-1.el6.remi.i686 libxml2.so.2(LIBXML2_2.5.2) is needed by php-devel-5.4.6-1.el6.remi.i686 libxml2.so.2(LIBXML2_2.6.0) is needed by php-devel-5.4.6-1.el6.remi.i686 libxml2.so.2(LIBXML2_2.6.11) is needed by php-devel-5.4.6-1.el6.remi.i686 libxml2.so.2(LIBXML2_2.6.5) is needed by php-devel-5.4.6-1.el6.remi.i686 libz.so.1 is needed by php-devel-5.4.6-1.el6.remi.i686 I don't know how to fix this error and download all the dependencies. Thank you. Edit 1 (for quanta): Here is "yum repolist": root@sv1 [/tmp]# yum repolist Loaded plugins: fastestmirror, presto Loading mirror speeds from cached hostfile * base: mirror.atlanticmetro.net * epel: mirror.cogentco.com * extras: mirror.atlanticmetro.net * rpmforge: mirror.us.leaseweb.net * updates: centos.mirror.choopa.net repo id repo name status base CentOS-6 - Base 5,980+366 epel Extra Packages for Enterprise Linux 6 - x86_64 6,493+1,272 extras CentOS-6 - Extras 4 rpmforge RHEL 6 - RPMforge.net - dag 2,123+2,310 updates CentOS-6 - Updates 499+29 repolist: 15,099 root@sv1 [/tmp]# rpm -qa | grep php didn't return any result. I forgot to mention I'm using cPanel/WHM Edit 2 after adding the Remi repo: >root@sv1 [/etc/yum.repos.d]# yum clean all Loaded plugins: fastestmirror, presto Cleaning repos: base epel extras remi remi-test rpmforge updates Cleaning up Everything Cleaning up list of fastest mirrors 1 delta-package files removed, by presto >root@sv1 [/etc/yum.repos.d]# yum repolist Loaded plugins: fastestmirror, presto Determining fastest mirrors epel/metalink | 12 kB 00:00 * base: centos.mirror.nac.net * epel: mirror.symnds.com * extras: centos.mirror.choopa.net * remi: remi-mirror.dedipower.com * remi-test: remi-mirror.dedipower.com * rpmforge: mirror.us.leaseweb.net * updates: centos.mirror.nac.net base | 3.7 kB 00:00 base/primary_db | 4.5 MB 00:00 epel | 4.3 kB 00:00 epel/primary_db | 4.7 MB 00:00 extras | 3.0 kB 00:00 extras/primary_db | 6.3 kB 00:00 remi | 2.9 kB 00:00 remi/primary_db | 330 kB 00:00 remi-test | 2.9 kB 00:00 remi-test/primary_db | 85 kB 00:00 rpmforge | 1.9 kB 00:00 rpmforge/primary_db | 2.5 MB 00:00 updates | 3.5 kB 00:00 updates/primary_db | 2.3 MB 00:00 repo id repo name status base CentOS-6 - Base 5,980+366 epel Extra Packages for Enterprise Linux 6 - x86_64 6,493+1,272 extras CentOS-6 - Extras 4 remi Les RPM de remi pour Enterprise Linux 6 - x86_64 96+564 remi-test Les RPM de remi en test pour Enterprise Linux 6 - x86_64 25+139 rpmforge RHEL 6 - RPMforge.net - dag 2,123+2,310 updates CentOS-6 - Updates 499+29 repolist: 15,220 >root@sv1 [/etc/yum.repos.d]# yum install php-devel Loaded plugins: fastestmirror, presto Loading mirror speeds from cached hostfile * base: centos.mirror.nac.net * epel: mirror.symnds.com * extras: centos.mirror.choopa.net * remi: remi-mirror.dedipower.com * remi-test: remi-mirror.dedipower.com * rpmforge: mirror.us.leaseweb.net * updates: centos.mirror.nac.net Setting up Install Process No package php-devel available. Error: Nothing to do >root@sv1 [/etc/yum.repos.d]#

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• Can't log in via SSH to any accounts set to use /bin/bash as a default shell

  - by Gui Ambros

  I'm trying to install bash as the default shell on a ARM Linux running on an embedded device (Synology DS212+ NAS). But there's something really wrong, and I can't figure out what it is. Symptoms: 1) Root has /bin/bash as default shell, and can log in normally via SSH: $ grep root /etc/passwd root:x:0:0:root:/root:/bin/bash $ ssh root@NAS root@NAS's password: Last login: Sun Dec 16 14:06:56 2012 from desktop # 2) joeuser has /bin/bash as default shell, and receives "Permission denied" when trying to log in via SSH: $ grep joeuser /etc/passwd joeuser:x:1029:100:Joe User:/home/joeuser:/bin/bash $ ssh joeuser@localhost joeuser@NAS's password: Last login: Sun Dec 16 14:07:22 2012 from desktop Permission denied, please try again. Connection to localhost closed. 3) changing joeuser's shell back to /bin/sh: $ grep joeuser /etc/passwd joeuser:x:1029:100:Joe User:/home/joeuser:/bin/sh $ ssh joeuser@localhost Last login: Sun Dec 16 15:50:52 2012 from localhost $ To make things even more strange, I can log in as joeuser using /bin/bash using the serial console (!). Also a su - joeuser as root works fine, so the bash binary itself is working fine. In an act of despair, I changed joeuser's uid to 0 on /etc/passwd, but also didn't work, so it doesn't seem to be anything permission related. Seems that bash is doing some extra checking that sshd didn't like, and blocking the connections for non-root users. Maybe some sort of sanity checking - or terminal emulation - that is triggering the SIGCHLD, but only when called via ssh. I already went through every single item on sshd_config, and also put SSHD in debug mode, but didn't find anything strange. Here's my /etc/ssh/sshd_config: LogLevel DEBUG LoginGraceTime 2m PermitRootLogin yes RSAAuthentication yes PubkeyAuthentication yes AuthorizedKeysFile %h/.ssh/authorized_keys ChallengeResponseAuthentication no UsePAM yes AllowTcpForwarding no ChrootDirectory none Subsystem sftp internal-sftp -f DAEMON -u 000 And here's the output from /usr/syno/sbin/sshd -d, showing the failed attempt of joeuser trying to log in, with /bin/bash as the shell: debug1: Config token is loglevel debug1: Config token is logingracetime debug1: Config token is permitrootlogin debug1: Config token is rsaauthentication debug1: Config token is pubkeyauthentication debug1: Config token is authorizedkeysfile debug1: Config token is challengeresponseauthentication debug1: Config token is usepam debug1: Config token is allowtcpforwarding debug1: Config token is chrootdirectory debug1: Config token is subsystem debug1: HPN Buffer Size: 87380 debug1: sshd version OpenSSH_5.8p1-hpn13v11 debug1: read PEM private key done: type RSA debug1: private host key: #0 type 1 RSA debug1: read PEM private key done: type DSA debug1: private host key: #1 type 2 DSA debug1: read PEM private key done: type ECDSA debug1: private host key: #2 type 3 ECDSA debug1: rexec_argv[0]='/usr/syno/sbin/sshd' debug1: rexec_argv[1]='-d' Set /proc/self/oom_adj from 0 to -17 debug1: Bind to port 22 on ::. debug1: Server TCP RWIN socket size: 87380 debug1: HPN Buffer Size: 87380 Server listening on :: port 22. debug1: Bind to port 22 on 0.0.0.0. debug1: Server TCP RWIN socket size: 87380 debug1: HPN Buffer Size: 87380 Server listening on 0.0.0.0 port 22. debug1: Server will not fork when running in debugging mode. debug1: rexec start in 6 out 6 newsock 6 pipe -1 sock 9 debug1: inetd sockets after dupping: 4, 4 Connection from 127.0.0.1 port 52212 debug1: HPN Disabled: 0, HPN Buffer Size: 87380 debug1: Client protocol version 2.0; client software version OpenSSH_5.8p1-hpn13v11 SSH: Server;Ltype: Version;Remote: 127.0.0.1-52212;Protocol: 2.0;Client: OpenSSH_5.8p1-hpn13v11 debug1: match: OpenSSH_5.8p1-hpn13v11 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.8p1-hpn13v11 debug1: permanently_set_uid: 1024/100 debug1: MYFLAG IS 1 debug1: list_hostkey_types: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: AUTH STATE IS 0 debug1: REQUESTED ENC.NAME is 'aes128-ctr' debug1: kex: client->server aes128-ctr hmac-md5 none SSH: Server;Ltype: Kex;Remote: 127.0.0.1-52212;Enc: aes128-ctr;MAC: hmac-md5;Comp: none debug1: REQUESTED ENC.NAME is 'aes128-ctr' debug1: kex: server->client aes128-ctr hmac-md5 none debug1: expecting SSH2_MSG_KEX_ECDH_INIT debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: KEX done debug1: userauth-request for user joeuser service ssh-connection method none SSH: Server;Ltype: Authname;Remote: 127.0.0.1-52212;Name: joeuser debug1: attempt 0 failures 0 debug1: Config token is loglevel debug1: Config token is logingracetime debug1: Config token is permitrootlogin debug1: Config token is rsaauthentication debug1: Config token is pubkeyauthentication debug1: Config token is authorizedkeysfile debug1: Config token is challengeresponseauthentication debug1: Config token is usepam debug1: Config token is allowtcpforwarding debug1: Config token is chrootdirectory debug1: Config token is subsystem debug1: PAM: initializing for "joeuser" debug1: PAM: setting PAM_RHOST to "localhost" debug1: PAM: setting PAM_TTY to "ssh" debug1: userauth-request for user joeuser service ssh-connection method password debug1: attempt 1 failures 0 debug1: do_pam_account: called Accepted password for joeuser from 127.0.0.1 port 52212 ssh2 debug1: monitor_child_preauth: joeuser has been authenticated by privileged process debug1: PAM: establishing credentials User child is on pid 9129 debug1: Entering interactive session for SSH2. debug1: server_init_dispatch_20 debug1: server_input_channel_open: ctype session rchan 0 win 65536 max 16384 debug1: input_session_request debug1: channel 0: new [server-session] debug1: session_new: session 0 debug1: session_open: channel 0 debug1: session_open: session 0: link with channel 0 debug1: server_input_channel_open: confirm session debug1: server_input_global_request: rtype [email protected] want_reply 0 debug1: server_input_channel_req: channel 0 request pty-req reply 1 debug1: session_by_channel: session 0 channel 0 debug1: session_input_channel_req: session 0 req pty-req debug1: Allocating pty. debug1: session_new: session 0 debug1: session_pty_req: session 0 alloc /dev/pts/1 debug1: server_input_channel_req: channel 0 request shell reply 1 debug1: session_by_channel: session 0 channel 0 debug1: session_input_channel_req: session 0 req shell debug1: Setting controlling tty using TIOCSCTTY. debug1: Received SIGCHLD. debug1: session_by_pid: pid 9130 debug1: session_exit_message: session 0 channel 0 pid 9130 debug1: session_exit_message: release channel 0 debug1: session_by_tty: session 0 tty /dev/pts/1 debug1: session_pty_cleanup: session 0 release /dev/pts/1 Received disconnect from 127.0.0.1: 11: disconnected by user debug1: do_cleanup debug1: do_cleanup debug1: PAM: cleanup debug1: PAM: closing session debug1: PAM: deleting credentials Here you have the full output of sshd -dd, together with ssh -vv. Bash: # bash --version GNU bash, version 3.2.49(1)-release (arm-none-linux-gnueabi) Copyright (C) 2007 Free Software Foundation, Inc. The bash binary was cross compiled from source. I also tried using a pre-compiled binary from the Optware distribution, but had the exact same problem. I checked for missing shared libraries using objdump -x, but they're all there. Any ideas what could be causing this "Permission denied, please try again."? I'm almost diving in the bash source code to investigate, but trying to avoid hours chasing something that may be silly.

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• Facing issues in setting up VPN connection(IKEv1) using iphone (Defult Cisco VPN client) and Strongswan 4.5.0 server

  - by Kushagra Bhatnagar

  I am facing issues in setting up VPN connection(IKEv1) using iPhone (Defult Cisco VPN client) and Strongswan 4.5.0 server. The Strongswan server is running on Ubuntu Linux, which is connected to some wifi hotspot. This is the guide which was used. I generated CA, server and client certificate, with the only difference mentioned below. “While generating server certificate, as per link CN=vpn.strongswan.org instead of this I changed CN name to CN=192.168.43.212.” Once certificates are generated, following (clientCert.p12 and caCert.pem) are sent to mobile via mail and installed on iphone. After installation I notice that certificates are considered as trusted also. Below are the ip addresses assigned to various interfaces Linux server wlan0 interface ip where server is running: 192.168.43.212 Iphone eth0 interface ip address: 192.168.43.72. iphone is also attached with the same wifi hotspot. Below is the snapshot of client configurations. Description Strong swan Server 192.168.43.212 Account ipsecvpn Password ***** Use certificate ON Certificate client The above username and password are in sync with the ipsec.secrets file. I am using the following ipsec.conf configuration: # basic configuration config setup plutodebug=all # crlcheckinterval=600 # strictcrlpolicy=yes # cachecrls=yes nat_traversal=yes # charonstart=yes plutostart=yes # Add connections here. # Sample VPN connections conn ios1 keyexchange=ikev1 authby=xauthrsasig xauth=server left=%defaultroute leftsubnet=0.0.0.0/0 leftfirewall=yes leftcert=serverCert.pem right=192.168.43.72 rightsubnet=10.0.0.0/24 rightsourceip=10.0.0.2 rightcert=clientCert.pem pfs=no auto=add With the above configurations when I enable VPN on iphone, it says Could not able to verify server certificate. I ran Wireshark on a Linux server and observe that initially some ISAKMP message exchanges happens between client and server, which are successful but before authorization, client is sending some informational message and soon after this client is showing error as popup Could not able to verify server certificate. Capture logs on Strongswan server and in server logs below errors are observed: From auth.log Apr 25 20:16:08 Linux pluto[4025]: | ISAKMP version: ISAKMP Version 1.0 Apr 25 20:16:08 Linux pluto[4025]: | exchange type: ISAKMP_XCHG_INFO Apr 25 20:16:08 Linux pluto[4025]: | flags: ISAKMP_FLAG_ENCRYPTION Apr 25 20:16:08 Linux pluto[4025]: | message ID: 9d 1a ea 4d Apr 25 20:16:08 Linux pluto[4025]: | length: 76 Apr 25 20:16:08 Linux pluto[4025]: | ICOOKIE: f6 b7 06 b2 b1 84 5b 93 Apr 25 20:16:08 Linux pluto[4025]: | RCOOKIE: 86 92 a0 c2 a6 2f ac be Apr 25 20:16:08 Linux pluto[4025]: | peer: c0 a8 2b 48 Apr 25 20:16:08 Linux pluto[4025]: | state hash entry 8 Apr 25 20:16:08 Linux pluto[4025]: | state object not found Apr 25 20:16:08 Linux pluto[4025]: **packet from 192.168.43.72:500: Informational Exchange is for an unknown (expired?) SA** Apr 25 20:16:08 Linux pluto[4025]: | next event EVENT_RETRANSMIT in 8 seconds for #8 Apr 25 20:16:16 Linux pluto[4025]: | Apr 25 20:16:16 Linux pluto[4025]: | *time to handle event Apr 25 20:16:16 Linux pluto[4025]: | event after this is EVENT_RETRANSMIT in 2 seconds Apr 25 20:16:16 Linux pluto[4025]: | handling event EVENT_RETRANSMIT for 192.168.43.72 "ios1" #8 Apr 25 20:16:16 Linux pluto[4025]: | sending 76 bytes for EVENT_RETRANSMIT through wlan0 to 192.168.43.72:500: Apr 25 20:16:16 Linux pluto[4025]: | a6 a5 86 41 4b fb ff 99 c9 18 34 61 01 7b f1 d9 Apr 25 20:16:16 Linux pluto[4025]: | 08 10 06 01 e9 1c ea 60 00 00 00 4c ba 7d c8 08 Apr 25 20:16:16 Linux pluto[4025]: | 13 47 95 18 19 31 45 30 2e 22 f9 4d 85 2c 27 bc Apr 25 20:16:16 Linux pluto[4025]: | 9e 9b e1 ae 1e 35 51 6f ab 80 f5 73 3c 15 8d 20 Apr 25 20:16:16 Linux pluto[4025]: | 4b 46 47 86 50 24 3f 13 15 7d d5 17 Apr 25 20:16:16 Linux pluto[4025]: | inserting event EVENT_RETRANSMIT, timeout in 40 seconds for #8 Apr 25 20:16:16 Linux pluto[4025]: | next event EVENT_RETRANSMIT in 2 seconds for #10 Apr 25 20:16:16 Linux pluto[4025]: | rejected packet: Apr 25 20:16:16 Linux pluto[4025]: | Apr 25 20:16:16 Linux pluto[4025]: | control: Apr 25 20:16:16 Linux pluto[4025]: | 30 00 00 00 00 00 00 00 00 00 00 00 0b 00 00 00 Apr 25 20:16:16 Linux pluto[4025]: | 6f 00 00 00 02 03 03 00 00 00 00 00 00 00 00 00 Apr 25 20:16:16 Linux pluto[4025]: | 02 00 00 00 c0 a8 2b 48 00 00 00 00 00 00 00 00 Apr 25 20:16:16 Linux pluto[4025]: | name: Apr 25 20:16:16 Linux pluto[4025]: | 02 00 01 f4 c0 a8 2b 48 00 00 00 00 00 00 00 00 Apr 25 20:16:16 Linux pluto[4025]: **ERROR: asynchronous network error report on wlan0 for message to 192.168.43.72 port 500, complainant 192.168.43.72: Connection refused [errno 111, origin ICMP type 3 code 3 (not authenticated)]** Anybody please provide some update about this error and how to solve this issue.

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• SSH as root using public key still prompts for password on RHEL 6.1

  - by Dean Schulze

  I've generated rsa keys with cygwin ssh-keygen and copied them to the server with ssh-copy-id -i id_rsa.pub [email protected] I've got the following settings in my /etc/ssh/sshd_config file RSAAuthentication yes PubkeyAuthentication yes AuthorizedKeysFile .ssh/authorized_keys PermitRootLogin yes When I ssh [email protected] it still prompts for a password. The output below from /usr/sbin/sshd -d says that a matching keys was found in the .ssh/authorized_keys file, but it still requires a password from the client. I've read a bunch of web postings about permissions on files and directories, but nothing works. Is it possible to ssh with keys in RHEL 6.1 or is this forbidden? The debug output from ssh and sshd is below. $ ssh -v [email protected] OpenSSH_6.1p1, OpenSSL 1.0.1c 10 May 2012 debug1: Connecting to my.ip.address [my.ip.address] port 22. debug1: Connection established. debug1: identity file /home/dschulze/.ssh/id_rsa type 1 debug1: identity file /home/dschulze/.ssh/id_rsa-cert type -1 debug1: identity file /home/dschulze/.ssh/id_dsa type 2 debug1: identity file /home/dschulze/.ssh/id_dsa-cert type -1 debug1: identity file /home/dschulze/.ssh/id_ecdsa type -1 debug1: identity file /home/dschulze/.ssh/id_ecdsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3 debug1: match: OpenSSH_5.3 pat OpenSSH_5* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.1 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Server host key: RSA 9f:00:e0:1e:a2:cd:05:53:c8:21:d5:69:25:80:39:92 debug1: Host 'my.ip.address' is known and matches the RSA host key. debug1: Found key in /home/dschulze/.ssh/known_hosts:3 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Next authentication method: publickey debug1: Offering RSA public key: /home/dschulze/.ssh/id_rsa debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Offering DSA public key: /home/dschulze/.ssh/id_dsa debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password debug1: Trying private key: /home/dschulze/.ssh/id_ecdsa debug1: Next authentication method: password Here is the server output from /usr/sbin/sshd -d [root@ga2-lab .ssh]# /usr/sbin/sshd -d debug1: sshd version OpenSSH_5.3p1 debug1: read PEM private key done: type RSA debug1: private host key: #0 type 1 RSA debug1: read PEM private key done: type DSA debug1: private host key: #1 type 2 DSA debug1: rexec_argv[0]='/usr/sbin/sshd' debug1: rexec_argv[1]='-d' debug1: Bind to port 22 on 0.0.0.0. Server listening on 0.0.0.0 port 22. debug1: Bind to port 22 on ::. Server listening on :: port 22. debug1: Server will not fork when running in debugging mode. debug1: rexec start in 5 out 5 newsock 5 pipe -1 sock 8 debug1: inetd sockets after dupping: 3, 3 Connection from 172.60.254.24 port 53401 debug1: Client protocol version 2.0; client software version OpenSSH_6.1 debug1: match: OpenSSH_6.1 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.3 debug1: permanently_set_uid: 74/74 debug1: list_hostkey_types: ssh-rsa,ssh-dss debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: client->server aes128-ctr hmac-md5 none debug1: kex: server->client aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: KEX done debug1: userauth-request for user root service ssh-connection method none debug1: attempt 0 failures 0 debug1: PAM: initializing for "root" debug1: userauth-request for user root service ssh-connection method publickey debug1: attempt 1 failures 0 debug1: test whether pkalg/pkblob are acceptable debug1: PAM: setting PAM_RHOST to "172.60.254.24" debug1: PAM: setting PAM_TTY to "ssh" debug1: temporarily_use_uid: 0/0 (e=0/0) debug1: trying public key file /root/.ssh/authorized_keys debug1: fd 4 clearing O_NONBLOCK debug1: matching key found: file /root/.ssh/authorized_keys, line 1 Found matching RSA key: db:b3:b9:b1:c9:df:6d:e1:03:5b:57:d3:d9:c4:4e:5c debug1: restore_uid: 0/0 Postponed publickey for root from 172.60.254.24 port 53401 ssh2 debug1: userauth-request for user root service ssh-connection method publickey debug1: attempt 2 failures 0 debug1: temporarily_use_uid: 0/0 (e=0/0) debug1: trying public key file /root/.ssh/authorized_keys debug1: fd 4 clearing O_NONBLOCK debug1: matching key found: file /root/.ssh/authorized_keys, line 1 Found matching RSA key: db:b3:b9:b1:c9:df:6d:e1:03:5b:57:d3:d9:c4:4e:5c debug1: restore_uid: 0/0 debug1: ssh_rsa_verify: signature correct debug1: do_pam_account: called Accepted publickey for root from 172.60.254.24 port 53401 ssh2 debug1: monitor_child_preauth: root has been authenticated by privileged process debug1: temporarily_use_uid: 0/0 (e=0/0) debug1: ssh_gssapi_storecreds: Not a GSSAPI mechanism debug1: restore_uid: 0/0 debug1: SELinux support enabled debug1: PAM: establishing credentials PAM: pam_open_session(): Authentication failure debug1: Entering interactive session for SSH2. debug1: server_init_dispatch_20 debug1: server_input_channel_open: ctype session rchan 0 win 1048576 max 16384 debug1: input_session_request debug1: channel 0: new [server-session] debug1: session_new: session 0 debug1: session_open: channel 0 debug1: session_open: session 0: link with channel 0 debug1: server_input_channel_open: confirm session debug1: server_input_global_request: rtype [email protected] want_reply 0 debug1: server_input_channel_req: channel 0 request pty-req reply 1 debug1: session_by_channel: session 0 channel 0 debug1: session_input_channel_req: session 0 req pty-req debug1: Allocating pty. debug1: session_pty_req: session 0 alloc /dev/pts/1 ssh_selinux_setup_pty: security_compute_relabel: Invalid argument debug1: server_input_channel_req: channel 0 request shell reply 1 debug1: session_by_channel: session 0 channel 0 debug1: session_input_channel_req: session 0 req shell debug1: Setting controlling tty using TIOCSCTTY. debug1: Received SIGCHLD. debug1: session_by_pid: pid 17323 debug1: session_exit_message: session 0 channel 0 pid 17323 debug1: session_exit_message: release channel 0 debug1: session_pty_cleanup: session 0 release /dev/pts/1 debug1: session_by_channel: session 0 channel 0 debug1: session_close_by_channel: channel 0 child 0 debug1: session_close: session 0 pid 0 debug1: channel 0: free: server-session, nchannels 1 Received disconnect from 172.60.254.24: 11: disconnected by user debug1: do_cleanup debug1: PAM: cleanup debug1: PAM: deleting credentials

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• Cisco ASA 5505 - L2TP over IPsec

  - by xraminx

  I have followed this document on cisco site to set up the L2TP over IPsec connection. When I try to establish a VPN to ASA 5505 from my Windows XP, after I click on "connect" button, the "Connecting ...." dialog box appears and after a while I get this error message: Error 800: Unable to establish VPN connection. The VPN server may be unreachable, or security parameters may not be configured properly for this connection. ASA version 7.2(4) ASDM version 5.2(4) Windows XP SP3 Windows XP and ASA 5505 are on the same LAN for test purposes. Edit 1: There are two VLANs defined on the cisco device (the standard setup on cisco ASA5505). - port 0 is on VLAN2, outside; - and ports 1 to 7 on VLAN1, inside. I run a cable from my linksys home router (10.50.10.1) to the cisco ASA5505 router on port 0 (outside). Port 0 have IP 192.168.1.1 used internally by cisco and I have also assigned the external IP 10.50.10.206 to port 0 (outside). I run a cable from Windows XP to Cisco router on port 1 (inside). Port 1 is assigned an IP from Cisco router 192.168.1.2. The Windows XP is also connected to my linksys home router via wireless (10.50.10.141). Edit 2: When I try to establish vpn, the Cisco device real time Log viewer shows 7 entries like this: Severity:5 Date:Sep 15 2009 Time: 14:51:29 SyslogID: 713904 Destination IP = 10.50.10.141, Decription: No crypto map bound to interface... dropping pkt Edit 3: This is the setup on the router right now. Result of the command: "show run" : Saved : ASA Version 7.2(4) ! hostname ciscoasa domain-name default.domain.invalid enable password HGFHGFGHFHGHGFHGF encrypted passwd NMMNMNMNMNMNMN encrypted names name 192.168.1.200 WebServer1 name 10.50.10.206 external-ip-address ! interface Vlan1 nameif inside security-level 100 ip address 192.168.1.1 255.255.255.0 ! interface Vlan2 nameif outside security-level 0 ip address external-ip-address 255.0.0.0 ! interface Vlan3 no nameif security-level 50 no ip address ! interface Ethernet0/0 switchport access vlan 2 ! interface Ethernet0/1 ! interface Ethernet0/2 ! interface Ethernet0/3 ! interface Ethernet0/4 ! interface Ethernet0/5 ! interface Ethernet0/6 ! interface Ethernet0/7 ! ftp mode passive dns server-group DefaultDNS domain-name default.domain.invalid object-group service l2tp udp port-object eq 1701 access-list outside_access_in remark Allow incoming tcp/http access-list outside_access_in extended permit tcp any host WebServer1 eq www access-list outside_access_in extended permit udp any any eq 1701 access-list inside_nat0_outbound extended permit ip any 192.168.1.208 255.255.255.240 access-list inside_cryptomap_1 extended permit ip interface outside interface inside pager lines 24 logging enable logging asdm informational mtu inside 1500 mtu outside 1500 ip local pool PPTP-VPN 192.168.1.210-192.168.1.220 mask 255.255.255.0 icmp unreachable rate-limit 1 burst-size 1 asdm image disk0:/asdm-524.bin no asdm history enable arp timeout 14400 global (outside) 1 interface nat (inside) 0 access-list inside_nat0_outbound nat (inside) 1 0.0.0.0 0.0.0.0 static (inside,outside) tcp interface www WebServer1 www netmask 255.255.255.255 access-group outside_access_in in interface outside timeout xlate 3:00:00 timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02 timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00 timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00 timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute http server enable http 192.168.1.0 255.255.255.0 inside no snmp-server location no snmp-server contact snmp-server enable traps snmp authentication linkup linkdown coldstart crypto ipsec transform-set TRANS_ESP_3DES_SHA esp-3des esp-sha-hmac crypto ipsec transform-set TRANS_ESP_3DES_SHA mode transport crypto ipsec transform-set TRANS_ESP_3DES_MD5 esp-3des esp-md5-hmac crypto ipsec transform-set TRANS_ESP_3DES_MD5 mode transport crypto map outside_map 1 match address inside_cryptomap_1 crypto map outside_map 1 set transform-set TRANS_ESP_3DES_MD5 crypto map outside_map interface inside crypto isakmp enable outside crypto isakmp policy 10 authentication pre-share encryption 3des hash md5 group 2 lifetime 86400 telnet timeout 5 ssh timeout 5 console timeout 0 dhcpd auto_config outside ! dhcpd address 192.168.1.2-192.168.1.33 inside dhcpd enable inside ! group-policy DefaultRAGroup internal group-policy DefaultRAGroup attributes dns-server value 192.168.1.1 vpn-tunnel-protocol IPSec l2tp-ipsec username myusername password FGHFGHFHGFHGFGFHF nt-encrypted tunnel-group DefaultRAGroup general-attributes address-pool PPTP-VPN default-group-policy DefaultRAGroup tunnel-group DefaultRAGroup ipsec-attributes pre-shared-key * tunnel-group DefaultRAGroup ppp-attributes no authentication chap authentication ms-chap-v2 ! ! prompt hostname context Cryptochecksum:a9331e84064f27e6220a8667bf5076c1 : end

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• Why is the latency on one LVM volume consistently higher?

  - by David Schmitt

  I've got a server with LVM over RAID1. One of the volumes has a consistently higher IO latency (as measured by the diskstats_latency munin plugin) than the other volumes from the same group. As you can see, the dark orange /root volume has consistently high IO latency. Actually ten times the average latency of the physical devices. It also has the highest Min and Max values. My main concern are not the peaks, which occur under high load, but the constant load on (semi-)idle. The server is running Debian Squeeze with the VServer kernel and has four VServer containers and one KVM guest. I'm looking for ways to fix - or at least understand - this situation. Here're some parts of the system configuration: root@kvmhost2:~# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/system--host-root 19G 3.8G 14G 22% / tmpfs 16G 0 16G 0% /lib/init/rw udev 16G 224K 16G 1% /dev tmpfs 16G 0 16G 0% /dev/shm /dev/md0 942M 37M 858M 5% /boot /dev/mapper/system--host-isos 28G 19G 8.1G 70% /srv/isos /dev/mapper/system--host-vs_a 30G 23G 6.0G 79% /var/lib/vservers/a /dev/mapper/system--host-vs_b 5.0G 594M 4.1G 13% /var/lib/vservers/b /dev/mapper/system--host-vs_c 5.0G 555M 4.2G 12% /var/lib/vservers/c /dev/loop0 4.4G 4.4G 0 100% /media/debian-6.0.0-amd64-DVD-1 /dev/loop1 4.4G 4.4G 0 100% /media/debian-6.0.0-i386-DVD-1 /dev/mapper/system--host-vs_d 74G 55G 16G 78% /var/lib/vservers/d root@kvmhost2:~# cat /proc/mounts rootfs / rootfs rw 0 0 none /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 none /proc proc rw,nosuid,nodev,noexec,relatime 0 0 none /dev devtmpfs rw,relatime,size=16500836k,nr_inodes=4125209,mode=755 0 0 none /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0 /dev/mapper/system--host-root / ext3 rw,relatime,errors=remount-ro,data=ordered 0 0 tmpfs /lib/init/rw tmpfs rw,nosuid,relatime,mode=755 0 0 tmpfs /dev/shm tmpfs rw,nosuid,nodev,relatime 0 0 fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0 /dev/md0 /boot ext3 rw,sync,relatime,errors=continue,data=ordered 0 0 /dev/mapper/system--host-isos /srv/isos ext3 rw,relatime,errors=continue,data=ordered 0 0 /dev/mapper/system--host-vs_a /var/lib/vservers/a ext3 rw,relatime,errors=continue,data=ordered 0 0 /dev/mapper/system--host-vs_b /var/lib/vservers/b ext3 rw,relatime,errors=continue,data=ordered 0 0 /dev/mapper/system--host-vs_c /var/lib/vservers/c ext3 rw,relatime,errors=continue,data=ordered 0 0 /dev/loop0 /media/debian-6.0.0-amd64-DVD-1 iso9660 ro,relatime 0 0 /dev/loop1 /media/debian-6.0.0-i386-DVD-1 iso9660 ro,relatime 0 0 /dev/mapper/system--host-vs_d /var/lib/vservers/d ext3 rw,relatime,errors=continue,data=ordered 0 0 root@kvmhost2:~# cat /proc/mdstat Personalities : [raid1] md1 : active raid1 sda2[0] sdb2[1] 975779968 blocks [2/2] [UU] md0 : active raid1 sda1[0] sdb1[1] 979840 blocks [2/2] [UU] unused devices: <none> root@kvmhost2:~# iostat -x Linux 2.6.32-5-vserver-amd64 (kvmhost2) 06/28/2012 _x86_64_ (8 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 3.09 0.14 2.92 1.51 0.00 92.35 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util sda 23.25 161.12 7.46 37.90 855.27 1596.62 54.05 0.13 2.80 1.76 8.00 sdb 22.82 161.36 7.36 37.66 850.29 1596.62 54.35 0.54 12.01 1.80 8.09 md0 0.00 0.00 0.00 0.00 0.14 0.02 38.44 0.00 0.00 0.00 0.00 md1 0.00 0.00 53.55 198.16 768.01 1585.25 9.35 0.00 0.00 0.00 0.00 dm-0 0.00 0.00 0.48 20.21 16.70 161.71 8.62 0.26 12.72 0.77 1.60 dm-1 0.00 0.00 3.62 10.03 28.94 80.21 8.00 0.19 13.68 1.59 2.17 dm-2 0.00 0.00 0.00 0.00 0.00 0.00 9.17 0.00 9.64 6.42 0.00 dm-3 0.00 0.00 6.73 0.41 53.87 3.28 8.00 0.02 3.44 0.12 0.09 dm-4 0.00 0.00 17.45 18.18 139.57 145.47 8.00 0.42 11.81 0.76 2.69 dm-5 0.00 0.00 2.50 46.38 120.50 371.07 10.06 0.69 14.20 0.46 2.26 dm-6 0.00 0.00 0.02 0.10 0.67 0.81 12.53 0.01 75.53 18.58 0.22 dm-7 0.00 0.00 0.00 0.00 0.00 0.00 7.99 0.00 11.24 9.45 0.00 dm-8 0.00 0.00 22.69 102.76 407.25 822.09 9.80 0.97 7.71 0.39 4.95 dm-9 0.00 0.00 0.06 0.08 0.50 0.62 8.00 0.07 481.23 11.72 0.16 root@kvmhost2:~# ls -l /dev/mapper/ total 0 crw------- 1 root root 10, 59 May 11 11:19 control lrwxrwxrwx 1 root root 7 Jun 5 15:08 system--host-kvm1 -> ../dm-4 lrwxrwxrwx 1 root root 7 Jun 5 15:08 system--host-kvm2 -> ../dm-3 lrwxrwxrwx 1 root root 7 Jun 5 15:06 system--host-isos -> ../dm-2 lrwxrwxrwx 1 root root 7 May 11 11:19 system--host-root -> ../dm-0 lrwxrwxrwx 1 root root 7 Jun 5 15:06 system--host-swap -> ../dm-9 lrwxrwxrwx 1 root root 7 Jun 5 15:06 system--host-vs_d -> ../dm-8 lrwxrwxrwx 1 root root 7 Jun 5 15:06 system--host-vs_b -> ../dm-6 lrwxrwxrwx 1 root root 7 Jun 5 15:06 system--host-vs_c -> ../dm-7 lrwxrwxrwx 1 root root 7 Jun 5 15:06 system--host-vs_a -> ../dm-5 lrwxrwxrwx 1 root root 7 Jun 5 15:08 system--host-kvm3 -> ../dm-1 root@kvmhost2:~#

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• Debian virtual memory reaching limit

  - by Gregor

  As a relative newbie to systems, I inherited a Debian server and I've noticed that virtual memory is very high (around 95%!). The server has been running slow for around 6 months, and I was wondering if any of you had any tips on things I could try, particularly on freeing up memory. The server hosts various websites and also a Postit email server. Here are the details: Operating system Debian Linux 5.0 Webmin version 1.580 Time on system Thu Apr 12 11:12:21 2012 Kernel and CPU Linux 2.6.18-6-amd64 on x86_64 Processor information Intel(R) Core(TM)2 Duo CPU E7400 @ 2.80GHz, 2 cores System uptime 229 days, 12 hours, 50 minutes Running processes 138 CPU load averages 0.10 (1 min) 0.28 (5 mins) 0.36 (15 mins) CPU usage 14% user, 1% kernel, 0% IO, 85% idle Real memory 2.94 GB total, 1.69 GB used Virtual memory 3.93 GB total, 3.84 GB used Local disk space 142.84 GB total, 116.13 GB used Free m output: free -m total used free shared buffers cached Mem: 3010 2517 492 0 107 996 -/+ buffers/cache: 1413 1596 Swap: 4024 3930 93 Top output: top - 11:59:57 up 229 days, 13:38, 1 user, load average: 0.26, 0.24, 0.26 Tasks: 136 total, 2 running, 134 sleeping, 0 stopped, 0 zombie Cpu(s): 3.8%us, 0.5%sy, 0.0%ni, 95.0%id, 0.7%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 3082544k total, 2773160k used, 309384k free, 111496k buffers Swap: 4120632k total, 4024712k used, 95920k free, 1036136k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 28796 www-data 16 0 304m 68m 6188 S 8 2.3 0:03.13 apache2 1 root 15 0 10304 592 564 S 0 0.0 0:00.76 init 2 root RT 0 0 0 0 S 0 0.0 0:04.06 migration/0 3 root 34 19 0 0 0 S 0 0.0 0:05.67 ksoftirqd/0 4 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/0 5 root RT 0 0 0 0 S 0 0.0 0:00.06 migration/1 6 root 34 19 0 0 0 S 0 0.0 0:01.26 ksoftirqd/1 7 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/1 8 root 10 -5 0 0 0 S 0 0.0 0:00.12 events/0 9 root 10 -5 0 0 0 S 0 0.0 0:00.00 events/1 10 root 10 -5 0 0 0 S 0 0.0 0:00.00 khelper 11 root 10 -5 0 0 0 S 0 0.0 0:00.02 kthread 16 root 10 -5 0 0 0 S 0 0.0 0:15.51 kblockd/0 17 root 10 -5 0 0 0 S 0 0.0 0:01.32 kblockd/1 18 root 15 -5 0 0 0 S 0 0.0 0:00.00 kacpid 127 root 10 -5 0 0 0 S 0 0.0 0:00.00 khubd 129 root 10 -5 0 0 0 S 0 0.0 0:00.00 kseriod 180 root 10 -5 0 0 0 S 0 0.0 70:09.05 kswapd0 181 root 17 -5 0 0 0 S 0 0.0 0:00.00 aio/0 182 root 17 -5 0 0 0 S 0 0.0 0:00.00 aio/1 780 root 16 -5 0 0 0 S 0 0.0 0:00.00 ata/0 782 root 16 -5 0 0 0 S 0 0.0 0:00.00 ata/1 783 root 16 -5 0 0 0 S 0 0.0 0:00.00 ata_aux 802 root 10 -5 0 0 0 S 0 0.0 0:00.00 scsi_eh_0 803 root 10 -5 0 0 0 S 0 0.0 0:00.00 scsi_eh_1 804 root 10 -5 0 0 0 S 0 0.0 0:00.00 scsi_eh_2 805 root 10 -5 0 0 0 S 0 0.0 0:00.00 scsi_eh_3 1013 root 10 -5 0 0 0 S 0 0.0 49:27.78 kjournald 1181 root 15 -4 16912 452 448 S 0 0.0 0:00.05 udevd 1544 root 14 -5 0 0 0 S 0 0.0 0:00.00 kpsmoused 1706 root 13 -5 0 0 0 S 0 0.0 0:00.00 kmirrord 1995 root 18 0 193m 3324 1688 S 0 0.1 8:52.77 rsyslogd 2031 root 15 0 48856 732 608 S 0 0.0 0:01.86 sshd 2071 root 25 0 17316 1072 1068 S 0 0.0 0:00.00 mysqld_safe 2108 mysql 15 0 320m 72m 4368 S 0 2.4 1923:25 mysqld 2109 root 18 0 3776 500 496 S 0 0.0 0:00.00 logger 2180 postgres 15 0 99504 3016 2880 S 0 0.1 1:24.15 postgres 2184 postgres 15 0 99504 3596 3420 S 0 0.1 0:02.08 postgres 2185 postgres 15 0 99504 696 628 S 0 0.0 0:00.65 postgres 2186 postgres 15 0 99640 892 648 S 0 0.0 0:01.18 postgres

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• Can not access network computers anymore

  - by Johny Skovdal

  Last Thursday (03/05/12) I got a new computer to be able to work from home. I plugged it, by cable, into the company network and installed most of the software needed for me to do so, by accessing a share on my stationary computer at work. I had no issues here what so ever, and everything just worked. Yesterday evening I tried accessing the company network trough Windows VPN, and while I was able to connect to the network, I was unable to connect to any computers on the network. I did, however, get an error when connecting, but I can't seem to get the error again, to get the details of the error message. Today I am sitting on the company network again, and now I can not access anything on the network like I could last Thursday, though I can ping all the computers I am attempting to access. Here is a list of details that might help in troubleshooting this issue (updated): List of observations / actions My computer is identical to another computer that has no issues. It is not on the domain but rather on the default workgroup, but this was not an issue last Thursday, so I am assuming it still is not. I am able to access my e-mail on the exchange server. I can connect to our TFS server from Visual Studio but not from Explorer. I can also connect to Database Servers and Remote Desktop. I can see several computers when browsing network computers, but I am unable to connect to any of them. When trying to connect to a computer I am consistently met with the error code "0x80070035" (network path not found). I also get the 0x80070035 error when double clicking the target computer from the Network UI. I am not met with a login dialog when trying to access a computer, as I should, since I am not on the domain. (I did login to both Exchange, Remote Desktop and TFS though) Between Thursday where it worked and Sunday evening where it did not, I have installed quite a few security updates, plus various tools etc. that I need for programming. I have tried accessing by computer name and ip and neither of them work. I can ping by computer name. I have deleted all (1 entry) stored network credentials. I am able to access my computer from the target computer. Client and Server can see each other on the network = Network Discovery is enabled. I am using the network profile "Work". When accessing the network through VPN, I am unable to get anything to work using computernames, but all of the above applies when using IP adresses instead of computername. I run Windows 7 Home Premium on my computer. Using powershell attempting to access a share I get the following error (ComputerName and ShareName being correct values of course): PS C:\Users\MyUser> cd \\ComputerName\ShareName Set-Location : Cannot find path '\\ComputerName\ShareName' because it does not exist. At line:1 char:3 + cd <<<< \\ComputerName\ShareName + CategoryInfo : ObjectNotFound: (\\ComputerName\ShareName:String) [Set-Location], ItemNotFoundException + FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.SetLocationCommand However, ping'ing the same machine (ping ComputerName) from powershell I get response immediately. (As mentioned in the list of observations/actions, I tried the above with the IP address again on VPN, to get the same result) Conclusion So to sum up, pretty much the only thing I can not do, is access the other computers through browsing (explorer.exe, powershell, map networkdrive, etc.), which means that I am pretty much down to, that it is unable to resolve the path somehow, when trying to connect to other computers trough browsing, though the path gets resolved perfectly using all kinds of other services. Any recommendations as to what I can try next to resolve the issue? :)

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