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• Security Alert for CVE-2012-4681 Released

  - by Eric P. Maurice

  Hi, this is Eric Maurice again! Oracle has just released Security Alert CVE-2012-4681 to address 3 distinct but related vulnerabilities and one security-in-depth issue affecting Java running in desktop browsers.  These vulnerabilities are: CVE-2012-4681, CVE-2012-1682, CVE-2012-3136, and CVE-2012-0547.  These vulnerabilities are not applicable to standalone Java desktop applications or Java running on servers, i.e. these vulnerabilities do not affect any Oracle server based software. Vulnerabilities CVE-2012-4681, CVE-2012-1682, and CVE-2012-3136 have each received a CVSS Base Score of 10.0.  This score assumes that the affected users have administrative privileges, as is typical in Windows XP.  Vulnerability CVE-20120-0547 has received a CVSS Base Score of 0.0 because this vulnerability is not directly exploitable in typical user deployments, but Oracle has issued a security-in-depth fix for this issue as it can be used in conjunction with other vulnerabilities to significantly increase the overall impact of a successful exploit. If successfully exploited, these vulnerabilities can provide a malicious attacker the ability to plant discretionary binaries onto the compromised system, e.g. the vulnerabilities can be exploited to install malware, including Trojans, onto the targeted system.  Note that this malware may in some instances be detected by current antivirus signatures upon its installation.  Due to the high severity of these vulnerabilities, Oracle recommends that customers apply this Security Alert as soon as possible.  Furthermore, note that the technical details of these vulnerabilities are widely available on the Internet and Oracle has received external reports that these vulnerabilities are being actively exploited in the wild.    Developers should download the latest release at http://www.oracle.com/technetwork/java/javase/downloads/index.html   Java users should download the latest release of JRE at http://java.com, and of course   Windows users can take advantage of the Java Automatic Update to get the latest release. For more information: The Advisory for Security Alert CVE-2012-4681 is located at http://www.oracle.com/technetwork/topics/security/alert-cve-2012-4681-1835715.html  Users can verify that they’re running the most recent version of Java by visiting: http://java.com/en/download/installed.jsp    Instructions on removing older (and less secure) versions of Java can be found at http://java.com/en/download/faq/remove_olderversions.xml   

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• Tracking Down a Stack Overflow in My Linq Query

  - by Lazarus

  I've written the following Linq query: IQueryable<ISOCountry> entries = (from e in competitorRepository.Competitors join c in countries on e.countryID equals c.isoCountryCode where !e.Deleted orderby c.isoCountryCode select new ISOCountry() { isoCountryCode = e.countryID, Name = c.Name }).Distinct(); The objective is to retrieve a list of the countries represented by the competitors found in the system. 'countries' is an array of ISOCountry objects explicitly created and returned as an IQueryable (ISOCountry is an object of just two strings, isoCountryCode and Name). Competitors is an IQueryable which is bound to a database table through Linq2SQL though I created the objects from scratch and used the Linq data mapping decorators. For some reason this query causes a stack overflow when the system tries to execute it. I've no idea why, I've tried trimming the Distinct, returning an anonymous type of the two strings, using 'select c', all result in the overflow. The e.CountryID value is populated from a dropdown that was in itself populated from the IQueryable so I know the values are appropriate but even if not I wouldn't expect a stack overflow. Can anyone explain why the overflow is occurring or give good speculation as to why it might be happening? EDIT As requested, code for ISOCountry: public class ISOCountry { public string isoCountryCode { get; set; } public string Name { get; set; } }

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• Closures in Ruby

  - by Isaac Cambron

  I'm kind of new to Ruby and some of the closure logic has me a confused. Consider this code: array = [] for i in (1..5) array << lambda {j} end array.map{|f| f.call} => [5, 5, 5, 5, 5] This makes sense to me because i is bound outside the loop, so the same variable is captured by each trip through the loop. It also makes sense to me that using an each block can fix this: array = [] (1..5).each{|i| array << lambda {i}} array.map{|f| f.call} => [1, 2, 3, 4, 5] ...because i is now being declared separately for each time through. But now I get lost: why can't I also fix it by introducing an intermediate variable? array = [] for i in 1..5 j = i array << lambda {j} end array.map{|f| f.call} => [5, 5, 5, 5, 5] Because j is new each time through the loop, I'd think a different variable would be captured on each pass. For example, this is definitely how C# works, and how -- I think-- Lisp behaves with a let. But in Ruby not so much. It almost looks like = is aliasing the variable instead of copying the reference, but that's just speculation on my part. What's really happening?

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• Disabling browser print options (headers, footers, margins) from page?

  - by Anthony

  I have seen this question asked in a couple of different ways on SO and several other websites, but most of them are either too specific or out-of-date. I'm hoping someone can provide a definitive answer here without pandering to speculation. Is there a way, either with CSS or javascript, to change the default printer settings when someone prints within their browser? And of course by "prints from their browser" I mean some form of HTML, not PDF or some other plug-in reliant mime-type. Please note: If some browsers offer this and others don't (or if you only know how to do it for some browsers) I welcome browser-specific solutions. Similarly, if you know of a mainstream browser that has specific restrictions against EVER doing this, that is also helpful, but some fairly up-to-date documentation would be appreciated. (simply saying "that goes against XYZ's security policy" isn't very convincing when XYZ has made significant changes in said policy in the last three years). Finally, when I say "change default print settings" I don't mean forever, just for my page, and I am referring specifically to print margins, headers, and footers. I am very aware that CSS offers the option of changing the page orientation as well as the page margins. One of the many struggles is with Firefox. If I set the page margins to 1 inch, it ADDS this to the half inch it already puts into place. I very much want to reduce the usage of PDFs on my client's site, but the infringement on presentation (as well as the lack of reliability) are their main concern.

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• java.awt -- when java outputs an image to my monitor (screen), where is the file that is output to the monitor card?

  - by user1405870

  Suppose that I am drawing a set of images using java graphics objects. Suppose that I java is outputting these images to my monitor. Where is the file or files that are sent to the monitor card (the graphical representation files). How can I take this file and save it to disk, or how can I take this file and write it to an array, or how can I take these files and combine the results of their output (to the monitor) into a single file for saving? I don't want to use a screen shot feature, I want to be able to redirect (xor capture also) the output to the monitor to some sort of byte-stream. I note that monitors are much better than semaphores, when you are talking about display capabilities; I don't need a counter example. I might not be asking the correct question. It might be that I want to capture the file while it is still in User Space, before it is put into 'Device Space'. I would like to try and capture the byte stream so that I can convert it to MPEG-4 format. I either need a streaming output from the MPEG-4 converter, coming from the streaming input, or else, I need to take static images at discrete times and convert the images. What format will the output from User Space be in? What format will the Device Space output be in? Try to keep speculation to a minimum. http://docs.oracle.com/javame/config/cdc/opt-pkgs/api/jsr927/index.html I guess that Java has made a means of displaying AWT objects on a television screen. Thank you. Ryan Zoerner

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• Watchguard Firewall WebBlocker Regular Expression for Multiple Domains?

  - by Eric

  I'm pretty sure this is really a regex question, so you can skip to REGEX QUESTION if you want to skip the background. Our primary firewall is a Watchguard X750e running Fireware XTM v11.2. We're using webblocker to block most of the categories, and I'm allowing needed sites as they arise. Some sites are simple to add as exceptions, like Pandora radio. That one is just a pattern matched exception with "padnora.com/" as the pattern. All traffic from anywhere on pandora.com is allowed. I'm running into trouble on more sophisticated domains that reference content off of their base domains. We'll take GrooveShark as a sample. If you go to http://grooveshark.com/ and view page source, you'll see hrefs referring to gs-cdn.net as well as grooveshar.com. So adding a WebBlocker exception to grooveshark.com/ is not effective, and I have to add a second rule allowing gs-cdn.net/ as well. I see that the WebBlocker allows regex rules, so what I'd like to do in situations like this is create a single regex rule that allows traffic to all the needed domains. REGEX QUESTION: I'd like to try a regex that matches grooveshark.com/ and gs-cdn.net/. If anybody can help me write that regex, I'd appreciate it. Here is what is in the WatchGuard documentation from that section: Regular expression Regular expression matches use a Perl-compatible regular expression to make a match. For example, .[onc][eor][gtm] matches .org, .net, .com, or any other three-letter combination of one letter from each bracket, in order. Be sure to drop the leading “http://” Supports wild cards used in shell script. For example, the expression “(www)?.watchguard.[com|org|net]” will match URL paths including www.watchguard.com, www.watchguard.net, and www.watchguard.org. Thanks all!

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• Howto: SaaS / PHP Application / Tenants / Security

  - by Ben Fransen

  Hi all, Being completely new in the webhostingcorner I have a few questions on how to implement/setup a webserver for a SaaS application. I'm about to rent my own server for a new product (CMS) I'm launching in two months. Developing the system wasn't that much of wild ride to me, but a correct way to implement it, is. So lets say this is my situation: I want to host 10 websites for 8 clients. There are 6 single sites, and two clients have two websites they can manage with my software. The CMS must be placed on the server too, all clients are connecting to 1 system The database must be placed Depending on the contract a client makes, the client gets some storage. How to measure the used storage over the DB, FileSystem and email Clients may not, in any case be able to somehow get outside their directory, but from the CMS directory the CMS must be able to create files and dirs in a clients directory (for templates, imagegalleries, widgets, etc, etc). I was thinking about something like a dirstructure like this: ./CMS/ [all CMS files] ./Websites/*/ [all websites] My hostingprovider will install updates to the os (CentOS, latest) and the admin panel (Direct Admin). Is there anybody with experience on this topic? Or do you have some thoughts about it? please join the conversation since I'm completely new to this. Ben

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• Load Testing a Security/Gateway Appliance

  - by Joel Coel

  In a couple weeks I will load testing a security/gateway appliance. We're a small residential college, and that "residential" means the traffic moving through the appliance is a bit like the Wild West. We have everything from Facebook to World of Warcraft, BitTorrent to Netflix, or Halo to YouTube... basically anything you might find in the home of a high-school or college aged person. Somewhere in there some real academic work gets done as well. We rely on our current appliance for traffic shaping, antivirus, malware filtering, intrusion detection on our servers, logging and abuse reporting, and even some content filtering. All this puts a decent load when we have students around, and I'm concerned about the ability of the new candidate to keep up. On paper it should handle things, but I'm worried. Prior experience is that vendors greatly over-report what an appliance can handle. The product also includes a licensed session limit, and I'm also worried that just a few misbehaving students could unwittingly bring us to that limit and cause service disruptions. I need to know this will work for our campus in order to commit to it. Going a performance level higher in that product takes the pricing way out of line with what we expect and have done in the past. What I need is a good way to load test this guy. My problem is that our current level of summer traffic is less than one percent of what it will be when students come back just six weeks from now. Any ideas on how to really stress this thing and see what it can do, in a way that will give me some clear ideas o. How that will scale for our campus? For the curious, I'm looking at a Watchguard 515, but it could be anything. If I were evaluating a competitor, I'd ask the same question.

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• Tell Tomcat to drop requests instead of dying "All threads (150) are currently busy"

  - by Nicolas Raoul

  My Tomcat 6.0.26 sometimes dies saying: SEVERE: All threads (150) are currently busy, waiting. Increase maxThreads (150) or check the servlet status ... then Tomcat shuts down, and users can't access the webapp until I restart Tomcat manually. Some of the threads indeed take a long time to execute, it is by-design, not a thread-gone-wild problem. I know I could increase maxThreads, but that is not a viable solution, because the server might receive requests even more requests. QUESTION: Instead of dying, can I tell Tomcat to just drop requests when maxThreads is reached and the AJP/1.3 backlog is full? Below is my server.xml in any case: <?xml version='1.0' encoding='utf-8'?> <Server port="8005" shutdown="SHUTDOWN"> <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" /> <Listener className="org.apache.catalina.core.JasperListener" /> <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" /> <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" /> <GlobalNamingResources> <Resource name="UserDatabase" auth="Container" type="org.apache.catalina.UserDatabase" description="User database that can be updated and saved" factory="org.apache.catalina.users.MemoryUserDatabaseFactory" pathname="conf/tomcat-users.xml" /> </GlobalNamingResources> <Service name="Catalina"> <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" minSpareThreads="100"/> <Connector port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" enableLookups="false" useBodyEncodingForURI="true" backlog="150" maxThreads="150" executor="tomcatThreadPool" keepAliveTimeout="5000" connectionTimeout="300000" /> <Engine name="Catalina" defaultHost="localhost" jvmRoute="ecm1"> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false"> </Host> </Engine> </Service> </Server>

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• Better approach to archiving large amounts of original video footage using optical media (DVD/Blu-ra

  - by Rob

  This question is to share my experience as well as ask for suggestions for better methods. Along with 2 friends, I completed the making of a short documentary film in 2006. Clip is at: http://www.youtube.com/mediamotioninvision The film was edited in Adobe Premiere Pro 1.5 on Windows XP. More details and screenshot here: http://www.flickr.com/photos/smilingrobbie/1350235514/ ( note this is not intended to be a plug, we've moved on from this initial learning curve project ;) ) The film is in 4:3 standard definition 720x576 PAL format. As well as retaining the final 30minute film, I wanted to keep all original files that assembled together to make the film. The footage was 83.5Gb So I archived them to over 20 4.7Gb DVD recordables in the original .avi format (i.e. data DVD-ROM format, NOT DVD-Video Mpeg2) Some .avi DV video files were larger than 4.7Gb so I used 7-zip to split them ( here is a guide as to how to do that: http://www.linglom.com/2008/10/12/how-to-split-a-large-file-using-7-zip/ ) To recombine them, a dos shell command like this would do that: copy /b file.avi.* file.avi would do the job, where .* is a wild card to include all the split parts e.g. 001, 002...00n assuming they are all in the same directory path folder. file.avi is the recombined file identical to the original. Later on, I bought a LG BE06 LU10 USB 2.0 Super-multi Blu-ray burner and archived the footage to 2 (two) x 50Gb BD-R DL discs. Again in the original format, written as files to a BD-R in the BD-R BD-ROM UDF format readable by PC/Mac etc, NOT Blu-ray video/film format. This seems to be a good solution for me, because: the archive is in a robust, reasonably permanent, non-volatile medium, i.e. DVD recordable / Blu-ray (debates about stability of optical media organic chemical dye compounds/substrates aside) the format of the archive is accessible by open source tools or just plain Windows Explorer and it's not in a proprietary format I just thought I'd ask folks for their experience on better methods, if such exist.

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• Loop through several servers, find specific dlls , get the dll version, internal filename and path?

  - by Graham

  I am a newby to Powershell, and using PS v2. I can see the massive potential it has, but I just can't get the following code to work fully. I am trying to end up with a csv file that contains the wild carded required dlls in the GAC_MSIL or sub-directory, get the dll version, internal filename and path, and the server IP address. The code is below, and it is in single line format because it appears easier to remote onto one of the servers in the server farm and run the single line from that console, ue to security log-ins etc. The code has produced a set of results, but only for the last server, it probably does the first server, then overwrites it but I am not sure about that. I have done a lot of reading about using arrays, and custom objects, and had a go at doing that, but my scripting skills in PS are not yet up to it. Code: $out = "Ouput_dll_ver_results.csv";foreach ($server in '11.222.33.123', '11.222.33.124') {$VersionInfo = (Get-ChildItem \$server\C$\windows\assembly\GAC_MSIL -recurse -Include abc*.dll,def*.dll,ghi*.dll,jkl*.dll | Where-Object { $.FullName -notmatch "\windows\assembly\temp\" })}; $VersionInfo | %{Get-Command $.FullName} | select -expand File* |Export-Csv $out Can you please advise if/how the above code can be corrected, and if not, what alternatives do I have to get the information I need. Many thanks in advance. Graham

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• Install IIS on Server 2003 unattended via PowerShell as a service user (no terminal session)

  - by maik

  I've been racking my brain with this for a bit and figured I would ask here to see if anyone could enlighten me. As the title says, I'm trying to install the IIS role on Server 2003 using an unattended install method launched via a service. We're using RightScale and most of what we want to accomplish is pretty straightforward. I created an unattend file for use with sysocmgr.exe: [Components] iis_common = ON iis_www = ON iis_www_vdir_scripts = ON iis_inetmgr = ON fp_extensions = ON iis_ftp = ON And I invoke it like so: sysocmgr.exe /i:%windir%\inf\sysoc.inf /u:C:\path\to\iis-unattend.txt /r /x /q If I run that from a command prompt while logged in as Administrator it works just fine, but if it runs via RightScript (the RightScale user on the server, which is a local admin) it fails somewhere in the middle and the logs I get are rather unhelpful. The thing is I can do this same thing with the SNMP Client (which is a Windows component, not a server role) and it works with no problems while run via the script service user. My best guess is that sysocmgr.exe is expecting a GUI element to be there during the role installation and since the service user has no terminal session it coughs and dies. That's just a wild stab in the dark.

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• How do I upgrade Windows Server 2008 R2 Standard (OEM Key) to Enterprise (MSDN Key) using DISM?

  - by Tom Crane

  (Originally asked as After upgrading to 2008 R2 Enterprise and installing more RAM, Windows can only see 4.00 GB but now I know what the question really is...) My Dell server came preinstalled with 2008 R2 Standard. I upgraded to Enterprise to take advantage of more than 32GB RAM. This server is purely for dev and testing, so I want to use my MSDN product key for the upgrade. I originally tried to uprade using the MSDN Enterprise key, but it wouldn't have it: dism /online /Set-Edition:ServerEnterprise /ProductKey:[MSDN key] => Error DISM DISM Transmog Provider: PID=5728 Product key is keyed to [], but user requested transmog to [ServerEnterprise] - CTransmogManager::ValidateTransmogrify I tried several things, including changing the current product key to the MSDN one. Eventually I used a KMS generic key which can be found in several technet forum posts. dism /online /Set-Edition:ServerEnterprise /ProductKey:[KMS Generic Key] ... and this appeared to work. I then changed the product key again (using the control panel) to the MSDN key, thinking that was the end of the matter. Only later when tried to start up VMs did I realise I only had 4GB of usable RAM. I didn't make the connection with the licensing changes at this point and went off on a wild goose chase of BIOS settings, memory configurations and the like. Only later when I saw this... http://social.technet.microsoft.com/Forums/en/winserverTS/thread/6debc586-0977-4731-b418-ca1edb34fe8b ...did I make the connection and reapply the KMS Generic key - which gave me all the RAM back. But now I have a system that isn't properly licensed, presumably I won't be able to activate it as it is, so I've got 2 days to enjoy it. With the MSDN key applied, only 4GB RAM is usable. Is there a way round this without a) rebuilding the server from scratch with the MSDN key from the start or b) buying a retail Enterprise license

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• Implementing an isolated guest WLAN via IPSec VPN on Windows

  - by sysadmin1138

  We are attempting to set up a guest WLAN network that is isolated from the rest of our network. This is proving difficult due to a couple of technical reasons. My first choice was to use a separate VLAN, on which our Firewall's handy WLAN port would handle DHCP, DNS and the network isolation we need. Unfortunately, due to the fact that our main office and our Internet connection itself are in different locations connected by way of a Metro Ethernet connection, I'm at the mercy of our ISP for VLAN transit. They won't pass a second VLAN between our two sites. And my hardware doesn't support 802.1ad "Q-in-Q", which would also solve this problem. So I can't use the VLAN method for isolation. At least not without spending money. As our Firewall can handle IPSec site-to-site VPN connections, I hope it is possible to connect a Server 2008R2 (standard) server I have in the office location to the WLAN and provide gateway services to the firewall. Thusly: Unfortunately, I don't know if it is possible to connect the two this way. The firewall has a pretty flexible IPSec/L2TP implementation (I've used it to connect iPads in the wild), but is neither Kerberized or supports NTLM. The Connection Security Rules view on the Windows server seems to get close to what I think needs to be done, but I'm failing on figuring out how to get it to do what I need it to do. Is this even possible, or do I need to pursue alternate solution?

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• Mesh Networked servers via vpn

  - by microspino

  I got a design idea and I would like to have some advice from SF about It. I have 5 customers with small real-estate databases. I've built for them a desktop app and now they would like to merge their database to share their data. I don't want to centralize everything in one place nor I want to do maintenance for servers. They told me also, that all of them in their offices, have little servers and maintenance guys available. Although everything seems suitable for web application, I had the idea to experiment something new: Any customer small-server wild be connected to the others in a sort of mesh network without a single point of failure and through VPNs. If one of the servers went down the customers could still connect to their databases from one of the other mesh networked servers instead of from the local one that is down. During normal operations all the servers sync the db with the others through VPNs. I can accept a half-day timing window of NON synched data, in other words, since I don't need real time synchronization, the server don't have to always stay in synch. I can migrate my data over to other Non-Sql technologies like CouchDB or Redis or whatever you suggest. As you can see I don't have a lot of constraints and although I could go with a web application I would like to delegate and decentralize support, data-privacy and management, as more as I can to my customers offices. Is that a crazy idea? Do you know If something similar exist? Which technology would you suggest?

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• Dns - wildcard vs. cname subdomains

  - by Matthew

  Alright I have to admit I'm confused with how DNS works. I've always just added things until they worked, and now it's time to learn how they work. So one confusing thing to me is that there's sort of two places I can have records. I have an account with rackspace cloud servers. And then there's the place I registered the domain. But both allow me to edit DNS records. Should I do everything at both places or is one better than the other or am I missing the point? Subdomains confuse me too. I'd like to be able to just have a wildcard subdomain (I've done this in the past.) I just don't like the idea of adding a cname record or A record every time I need a new subdomain. Then I read this and it says: The exact rules for when a wild card will match are specified in RFC 1034, but the rules are neither intuitive nor clearly specified. This has resulted in incompatible implementations and unexpected results when they are used.

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• Relayout LVM Disk

  - by Tom

  I have an Ubuntu 11.10 system with two 500GB disks. The partition tables look like this: /dev/sda1 primary 465.52GB /dev/sda2 extended 243.17MB -> /dev/sda5 logical 243.14MB /dev/sdb1 primary 465.76GB sda1 and sdb1 are in a single LVM physical volume group containing a single logical volume containing a single logical filesystem which is mounted as /. sda5 is mounted as /boot. The problem comes when I want to upgrade to Ubuntu 12.04, which requires at least 247MB free on /boot. So I need to reduce the size of sda1 so that I can increase the size of sda2 and sda5. How the heck do I do that? I can find how to shrink the logical volume group, but I'm not at all clear on how to clear out the end part of sda1 so that I can reduce the physical volume group. Does pvresize just deal with this automagically? Or is that wild wishful thinking? I guess the alternatives are to back everything up onto something or other and recreate the thing from scratch or find out whether GRUB2 supports using LVM for /boot.

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• Searching for just files

  - by M Schenkel

  I have a couple questions about searching for files on Windows 7. I find the XP method much easier than this new Windows 7 search. Note: I am only concerned about finding files matching a search term, not ALL files containing the search term. Is there a way to search just for files? When I use the search it seems to be searching "within" files and returning instances where the name of the file is used. Example: I have a whole web directory and want to find the javascript files. But if I enter "myjavascript.js" in the search, it also returns all the html files which reference the javascript file. This is both slow and difficult to actually find the reference to the file. Is there a way to search for an exact match? The search seems to implicitly use wildcards. For instance, say I have a bunch of files in a folder: file1.txt,file11.txt, file12.txt, file13.txt. If I enter "file1.txt" in the searcher it returns instances as if I were using a wild card file1*.txt I miss XP!!!!

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• How can see what processes makes my server slow?

  - by Steven

  All my websites on my server are extremely slow or not loading at all. Even server admin (Plesk) will not load some times. There's been no changes to the sites for the last coupple of months. How can I see what processes is making my server slow? My environment looks like this: Server: VPS running Linux 2.8.x OS: Centos 5 Manage interface: Plesk 9.x Memmory: 1024MB CPU: 2.2GHz My websites run on PHP and MySQL. I finally managed to telnet (Putty + SSH) in to my server. Running top did not show any processes using more than max 2% CPU and none were using exesive memmory. I also got a friend to install a program that checks the core files, and all seemed fine. So I'm leaning towards network issues or some other server malfunction. But I'm not able to find out what can be wrong. Here are some answers to Sean Kimball: I don't run mail services on my server yet There are noe specific bandwidth peaks. Prefork looks like this <IfModule prefork.c> StartServers 8 MinSpareServers 5 MaxSpareServers 20 ServerLimit 256 MaxClients 256 MaxRequestsPerChild 4000 </IfModule> Not sure what you mean with DNS question. But I think it's up and running. There are no processes running wild Where can I find avarage load? Telnet is disabled and I have to log in using SSH :)

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• Linux 'top' utility widly inaccurate (more so for multi-CPU/core hardware)?

  - by amn

  Hi all. After using 'top' for long time, albeit basically, I have grown to distrust it's '% CPU' column reports. I have a 8-core (quad core Intel i7 920 with hyperthreading) hardware, and see some wild numbers when running a process that should not use more than 5% overall. top happily reports 50%, and I suspect it is not so. My question is, is it a known fact that it's inaccurate when several CPUs/cores are present? I used 'mpstat' from the 'sysstat' package, and it's showings are much more conservative, certainly within my expectations. I did press '1' for 'top' to switch it to show all the core and us/sy/io stats, but the numbers are substantially higher than with 'mpstat'... I know that my expectations can be unfound as well, but my gut feeling tells me 'top' is wrong! :-) The reason I need to know is because the process I am monitoring only guarantees quality of service with CPU usage "less than 80%" (however vague that sounds), and I need to know how much headroom I have left. It's a streaming server.

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• 2008R2 Standard and Hyper-V and Ram Usage (Usable vs Available)

  - by Mark

  A new server was purchased for our development team to start utilizing the full feature set of TFS, namely Lab Management. Because of the need for Lab Management we bought a fairly beefy machine to handle this task and to also act as a build machine. I have been tasked to setup additional features TFS on this machine starting out with a build controller and eventually going towards a full out Lab Management setup using Hyper-V. My question: Upon initially logging I noticed that Windows is registering 64gb but only 32gb available. I know this is a limitation because of licencing since only Standard Edition is installed. Since Hyper-V is another layer that handles the virtualization of guest OS's is Hyper-V able to access this memory? Or is Hyper-V memory usage also limited by 2008 R2 Standard? If Hyper-V can somehow access this memory, is this how it should be setup? Or should the host 2008R2 Standard be upgraded to Enterprise so the Host can utilize the full 64gb? Before I go hog wild and using TFS I wanted to ask some experts so I don't need to reinstall the OS down the road to utilize the additional 32gb. Thanks for any help or links you can share.

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• Where does Firefox store cerificates and how to delete one?

  - by majid4466

  Hi all, The root cause of my problem is not known to me, whatever it is, I experience frequent DNS failures. When it happens I cannot browse to my Gmail inbox. I use two DNS settings. One is the public DNS server offered by OpenDNS, and the other is Google's free DNS server. When this happens I switch from the active setting to the other one and the problem goes away. But there is a side effect to this. When browsing to Gmail fails to load, after switching the DNS I receive an error saying the security certificate the site uses is only valid for OpenDNS. This my wild guess at what is going on: OpenDNS fails to resolve mail.google.com to its IP, My ISP sends me a page showing search results for 'mail.google.com' Since I have received some sort of page instead of a timeout, the browser, mistakenly, binds the certificate it has cached for 'mail.google.com' to the new domain. This search page is not served by https so not exception is thrown by the wrong binding After switching the DNS, the domain is correctly resolved to Gmail server's IP and since his is on https the handshake is triggered. Now, because of the wrong binding, which passed quietly as no handshake was involved, I receive the error saying the certificate used by 'mail.google.com' is only good for openDNS I don't know much about DNS, less about https and the process of establishing a secure connection. How correct is my explanation? How can I delete the wrong association and/or the certificate? Thanks for listening. P. S. The problem goes away by itself, but sometimes it takes several hours before Gmail works again.

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• Where does Firefox store cerificates and how to delete one?

  - by majid4466

  Hi all, The root cause of my problem is not known to me, whatever it is, I experience frequent DNS failures. When it happens I cannot browse to my Gmail inbox. I use two DNS settings. One is the public DNS server offered by OpenDNS, and the other is Google's free DNS server. When this happens I switch from the active setting to the other one and the problem goes away. But there is a side effect to this. When browsing to Gmail fails to load, after switching the DNS I receive an error saying the security certificate the site uses is only valid for OpenDNS. This my wild guess at what is going on: 1. OpenDNS fails to resolve mail.google.com to its IP, 2. My ISP sends me a page showing search results for 'mail.google.com' 3. Since I have received some sort of page instead of a timeout, the browser, mistakenly, binds the certificate it has cached for 'mail.google.com' to the new domain. This search page is not served by https so not exception is thrown by the wrong binding 4. After switching the DNS, the domain is correctly resolved to Gmail server's IP and since his is on https the handshake is triggered. 5. Now, because of the wrong binding, which passed quietly as no handshake was involved, I receive the error saying the certificate used by 'mail.google.com' is only good for openDNS I don't know much about DNS, less about https and the process of establishing a secure connection. How correct is my explanation? How can I delete the wrong association and/or the certificate? Thanks for listening. P. S. The problem goes away by itself, but sometimes it takes several hours before Gmail works again.

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• Would anyone tell me how to fetch the media:thumb element's attribute from a json feed?

  - by ash

  I made a yahoo pipe that pulls up the atoms as json format; however, I can fetch and display all the elements in my html page except for the element's attribute. Would anyone tell me how to fetch the media:thumb element's attribute from a json feed? I am pasting the html page's code with javascript. If you save the html page and then view it in browser, you will see that all the necessary elements get output at html page except for the media:thumb as I cannot display the attribute of media:thumb when the feed is formatted as json. I am also pasting the some portion of the json feed so that you can have an idea what i am talking about. Please tell me how to retrieve attribute from media:thumb element of a json feed by using plain javascript but no server side code or javascript library. Thank you. function getFeed(feed){ var newScript = document.createElement('script'); newScript.type = 'text/javascript'; newScript.src = 'http://pipes.yahoo.com/pipes/pipe.run?_id=40616620df99780bceb3fe923cecd216&_render=json&_callback=piper'; document.getElementsByTagName("head")[0].appendChild(newScript); } function piper(feed){ var tmp=''; for (var i=0; i'; tmp+=feed.value.items[i].title+''; tmp+=feed.value.items[i].author.name+''; tmp+=feed.value.items[i].published+''; if (feed.value.items[i].description) { tmp+=feed.value.items[i].description+''; } tmp+='<hr>'; } document.getElementById('rssLayer').innerHTML=tmp; } </script> bchnbc .............................................................. Some portion of the json feed that gets generated by yahoo pipe .............................................................. piper({"count":2,"value":{"title":"myPipe","description":"Pipes Output","link":"http:\/\/pipes.yahoo.com\/pipes\/pipe.info?_id=f7f4175d493cf1171aecbd3268fea5ee","pubDate":"Fri, 02 Apr 2010 17:59:22 -0700","generator":"http:\/\/pipes.yahoo.com\/pipes\/","callback":"piper", "items": [{ "rights":"Attribution - Noncommercial - No Derivative Works", "link":"http:\/\/vodo.net\/mixtape1", "y:id":{"value":null,"permalink":"true"}, "content":{"content":"We're proud to be releasing this first VODO MIXTAPE. Actual tape might be a thing of the past, but before P2P, mixtapes were the most popular way of sharing popular culture the world had known -- and once called the 'most widely practiced American art form'. We want to resuscitate the spirit of the mixtape for this VODO MIXTAPE series: compilations of our favourite shorts, the weird, the wild and the wonky, all brought together in a temporary and uncomfortable company.","type":"text"}, "author": {"name":"Various"}, "description":"We're proud to be releasing this first VODO MIXTAPE. Actual tape might be a thing of the past, but before P2P, mixtapes were the most popular way of sharing popular culture the world had known -- and once called the 'most widely practiced American art form'. We want to resuscitate the spirit of the mixtape for this VODO MIXTAPE series: compilations of our favourite shorts, the weird, the wild and the wonky, all brought together in a temporary and uncomfortable company.", "media:thumbnail": { "url":"http:\/\/vodo.net\/\/thumbnails\/Mixtape1.jpg" }, "published":"2010-03-08-09:20:20 PM", "format": { "audio_bitrate":null, "width":"608", "xmlns":"http:\/\/xmlns.transmission.cc\/FileFormat", "channels":"2", "samplerate":"44100.0", "duration":"3092.36", "height":"352", "size":"733925376.0", "framerate":"25.0", "audio_codec":"mp3", "video_bitrate":"1898.0", "video_codec":"XVID", "pixel_aspect_ratio":"16:9" }, "y:title":"Mixtape #1: VODO's favourite short films", "title":"Mixtape #1: VODO's favourite short films", "id":null, "pubDate":"2010-03-08-09:20:20 PM", "y:published":{"hour":"3","timezone":"UTC","second":"0","month":"4","minute":"10","utime":"1270264200","day":"3","day_of_week":"6","year":"2010" }}, {"rights":"Attribution - Noncommercial - No Derivative Works","link":"http:\/\/vodo.net\/gilbert","y:id":{"value":"cd6584e06ea4ce7fcd34172f4bbd919e295f8680","permalink":"true"},"content":{"content":"A documentary short about Gilbert, the Beacon Hill \"town crier.\" For the last 9 years, since losing his job and becoming homeless, Gilbert has delivered the weather, sports, and breaking headlines from his spot on the Boston Common. Music (used with permission) in this piece is called \"Blue Bicycle\" by Dusseldorf-based pianist \/ composer Volker Bertelmann also known as Hauschka. Artistic Statement: This is the first in a series of profiles of people who I think are interesting, and who I see on almost a daily basis. I don't want to limit the series to people who live \"on the fringe,\" but it would be appropriate to say that most of the people I interview are eclectic, eccentric, and just a little bit unique. The art is in the viewing - but I hope to turn my lens on individuals that don't always color in the lines, whether they can help it or not.","type":"text"},"author":{"name":"Nathaniel Hansen"},"description":"A documentary short about Gilbert, the Beacon Hill \"town crier.\" For the last 9 years, since losing his job and becoming homeless, Gilbert has delivered the weather, sports, and breaking headlines from his spot on the Boston Common. Music (used with permission) in this piece is called \"Blue Bicycle\" by Dusseldorf-based pianist \/ composer Volker Bertelmann also known as Hauschka. Artistic Statement: This is the first in a series of profiles of people who I think are interesting, and who I see on almost a daily basis. I don't want to limit the series to people who live \"on the fringe,\" but it would be appropriate to say that most of the people I interview are eclectic, eccentric, and just a little bit unique. The art is in the viewing - but I hope to turn my lens on individuals that don't always color in the lines, whether they can help it or not.","media:thumbnail":{"url":"http:\/\/vodo.net\/\/thumbnails\/gilbert.jpeg"},"published":"2010-03-03-10:37:05 AM","format":{"audio_bitrate":null,"width":"624","xmlns":"http:\/\/xmlns.transmission.cc\/FileFormat","channels":"2","samplerate":null,"duration":"373.673","height":"352","size":"123321266.0","framerate":null,"audio_codec":"mp3","video_bitrate":null,"video_codec":"XVID","pixel_aspect_ratio":"16:9"},"y:title":"Gilbert","title":"Gilbert","id":"cd6584e06ea4ce7fcd34172f4bbd919e295f8680","pubDate":"2010-03-03-10:37:05 AM","y:published":{"hour":"3","timezone":"UTC","second":"0","month":"4","minute":"10","utime":"1270264200","day":"3","day_of_week":"6","year":"2010" }} ] }})

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• Waiting for Windows 8: A Long, Hot Summer

  - by andrewbrust

  Microsoft has revealed some things about Windows 8, and revealed a part of the developer story for new Windows 8 “tailored,” “immersive” applications.  In retrospect, very little was shared.  The bit that was revealed to us is that those applications can be developed using a combination of HTML 5 and JavaScript.  Not much else was said, except that additional details would be revealed at Microsoft’s //Build/ conference in Anaheim, California in September. This has left a lot of people in suspense, and it seems that suspended state is going to last all summer.  The problem, of course, is that in the absence of hard information, people fill the void with Speculation, Rumor and Gloom.  That’s a bit like Fear, Uncertainty and Doubt, except that it’s self-imposed by the Microsoft community and not planted by Microsoft’s competitors. This is a less-than-perfect situation.  Not only is it causing developers to worry about the value of their skill sets, but I am already hearing from consulting shops that customers are getting nervous too and, in extreme cases, opting for non-Microsoft tools for their projects as a result.  I’m also hearing from dev tool ISVs that sales have suffered as a result. It’s quite possible that the customers moving off .NET wanted to do so anyway and it’s also possible that dev tool ISVs are suffering slower sales this year due a slowed rate of economic recovery. Without hard information, tend to people interpret things negatively.  Actually, that’s the major point in all of this. While there is multitude of opinions about what the Windows 8 development platform will look like once fully revealed, there is an emerging consensus around one thing: it sure would help if Microsoft revealed more of its strategy…just enough to quash absurd rumors, stabilize the .NET ecosystem and get people to stay calm. We’ve had some reassurances thus far: there will be a Windows desktop mode; we’ll still have Windows Explorer, we’ll still run Office, we’ll still have a task bar, and all the skills and tools we use now will still work there.  But with reassurances like that…people still feel insecure.  Because telling us that Windows 8 will have what is essentially a “classic” mode sure makes it sound like today’s skill sets will soon be “classic” too…and then maybe they’ll just become obsolete. Humans find change scary; it’s natural.  And when left alone with their fears – because no one is saying anything to dispel them – people can go from frightened to paranoid, and can start to viewing things in a downright conspiratorial light.  It would be great if Microsoft stepped into the void now and told us what is coming – especially because whatever they tell us is bound to be at least a little better than what people think they are going to hear. I don’t know what the announcements will be, but I do have it on authority, from a number of sources, that Microsoft isn’t gong to talk until //Build/.  That means no news until September September 13th.  Nothing until after Labor Day.  You get zippo until after the Back-to-School sales are done. What to do?  Try not to let the dark voices of gloom and doom fill your head.  Even in the absence of answers, we still have some important facts: The .NET developer community is huge. Microsoft’s customers have major investments in .NET, and in .NET skills. Political infighting in Redmond might make for irrational decisions, but ultimately public companies can’t just alienate their advocates and piss off their customers.  Spite doesn’t trump fiduciary responsibility. The computing device markets are changing, software is changing, software business models are changing and developers are changing.  Microsoft has to keep up. The HTML + JavaScript community is huge too, and it includes many of the “changed” developers. Public companies can’t ignore new markets nor the popular standards that can help them enter those new markets.  Loyalty doesn’t trump fiduciary responsibility either. If Microsoft can appeal to new developers, then it should. If Microsoft can keep catering to its existing developers and customers -- not just through legacy support, but also through empowering futures -- then it probably will. You don’t have to shove your old friends out into the rain to make room for new ones; you can bring those new constituents in under a bigger tent.  I hope Microsoft will enlarge the tent, and I have trouble imagining why it would not.

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