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  • Pantech Link II, Ubuntu and Virtual XP

    - by user85041
    Okay this is my problem. I have a Pantech Link II, dmesg states: [ 896.072037] usb 2-3: new high-speed USB device number 3 using ehci_hcd [ 896.258562] cdc_acm 2-3:1.0: ttyACM0: USB ACM device [ 896.260039] usbcore: registered new interface driver cdc_acm [ 896.260042] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters Have it installed through wine (pc suite and driver) and it doesn't see it. Virtual XP through VMWare Player sees my device, knows it needs a driver. The removable devices says Curitel Pantech USB Device (Maybe Driver). I have PC Suite installed in XP, I install the driver through the executable.. it says problem with installing hardware, and then it disappears. Ubuntu sees it after restart, but if I start XP with that driver installed, it disappears from both and I get these errors in dmesg: [ 1047.760555] /dev/vmmon[2882]: PTSC: initialized at 3093322000 Hz using TSC, TSCs are synchronized. [ 1048.174033] /dev/vmmon[2882]: Monitor IPI vector: 0 [ 1055.293060] /dev/vmnet: open called by PID 3163 (vmx-vcpu-0) [ 1055.293074] /dev/vmnet: port on hub 8 successfully opened [ 1055.293088] /dev/vmnet: open called by PID 3163 (vmx-vcpu-0) [ 1055.293094] /dev/vmnet: port on hub 8 successfully opened [ 1072.446305] /dev/vmnet: open called by PID 3163 (vmx-vcpu-0) [ 1072.446316] /dev/vmnet: port on hub 8 successfully opened [ 1072.446328] /dev/vmnet: open called by PID 3163 (vmx-vcpu-0) [ 1072.446334] /dev/vmnet: port on hub 8 successfully opened [ 1072.856024] usb 1-1: reset high-speed USB device number 2 using ehci_hcd [ 1079.292024] usb 1-1: reset high-speed USB device number 2 using ehci_hcd [ 1079.732024] usb 1-1: reset high-speed USB device number 2 using ehci_hcd [ 1127.743034] NET: Registered protocol family 39 [ 1127.749320] [3163]: VMCI: IOCTL_VMCI_QUEUEPAIR_ALLOC (cid=1522210225,result=4). [ 1144.104031] usb 2-3: reset high-speed USB device number 3 using ehci_hcd [ 1144.412031] usb 2-3: reset high-speed USB device number 3 using ehci_hcd [ 1155.889976] ehci_hcd 0000:00:13.2: force halt; handshake ffffc90000642024 00004000 00000000 -> -110 [ 1155.889980] ehci_hcd 0000:00:13.2: HC died; cleaning up [ 1155.890008] usb 2-3: USB disconnect, device number 3 [ 1155.890013] usb 2-3: usbfs: usb_submit_urb returned -110 [ 1658.310777] [3163]: VMCI: IOCTL_VMCI_QUEUEPAIR_DETACH (cid=1522210225,result=3). [ 1658.392018] NET: Unregistered protocol family 39 [ 1666.546438] /dev/vmnet: open called by PID 3163 (vmx-vcpu-0) [ 1666.546450] /dev/vmnet: port on hub 8 successfully opened [ 1666.546462] /dev/vmnet: open called by PID 3163 (vmx-vcpu-0) [ 1666.546467] /dev/vmnet: port on hub 8 successfully opened [ 1671.431383] uvcvideo: Found UVC 1.00 device USB2.0 Camera (1871:0101) [ 1671.432533] input: USB2.0 Camera as /devices/pci0000:00/0000:00:12.2/usb1/1-1/1-1:1.0/input/input13 lessa@X:~$ dmesg|tail [ 1155.890008] usb 2-3: USB disconnect, device number 3 [ 1155.890013] usb 2-3: usbfs: usb_submit_urb returned -110 [ 1658.310777] [3163]: VMCI: IOCTL_VMCI_QUEUEPAIR_DETACH (cid=1522210225,result=3). [ 1658.392018] NET: Unregistered protocol family 39 [ 1666.546438] /dev/vmnet: open called by PID 3163 (vmx-vcpu-0) [ 1666.546450] /dev/vmnet: port on hub 8 successfully opened [ 1666.546462] /dev/vmnet: open called by PID 3163 (vmx-vcpu-0) [ 1666.546467] /dev/vmnet: port on hub 8 successfully opened [ 1671.431383] uvcvideo: Found UVC 1.00 device USB2.0 Camera (1871:0101) [ 1671.432533] input: USB2.0 Camera as /devices/pci0000:00/0000:00:12.2/usb1/1-1/1-1:1.0/input/input13 I have tried uninstalling, and installing manually from the device manager update driver while it's still has the warning sign.. it doesn't see the drivers as valid. No idea how to fix this.. would prefer to not have to go to another computer. I'm not trying to do anything but get the pictures off of it. I have to restart ubuntu, plug in device, for ubuntu to see it correctly again. I am like a month and a half old linux newbie so I have no idea the commands I could use for this, and I don't have a memory card in the phone to mount.

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  • jQuery Templates, Data Link

    - by Renso
    Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Query Templates, Data Link, and Globalization I am sure you must have read Scott Guthrie’s blog post about jQuery support and officially supporting jQuery's templating, data linking and globalization, if not here it is: jQuery Templating Since we are an open source shop and use jQuery and jQuery plugins extensively to say the least, decided to look into the templating a bit and see what data linking is all about. For those not familiar with those terms here is the summary, plenty of material out there on what it is, but here is what in my experience it means: jQuery Templating: A templating engine that allows you to specify a client-side template where you indicate which properties/tags you want dynamically updated. You in a sense specify which parts of the html is dynamic and since it is pluggable you are able to use tools data jQuery data linking and others to let it sync up your template with data. What makes it more powerful is that you can easily work with rows of data, adding and removing rows. Once the template has been generated, which you do dynamically on a client-side event, you then append/inject the resulting template somewhere in your DOM, like for example you would get a JSON object from the database, map it to your template, it populates the template with your data in the indicated places, and then let’s say for example append it to a row in a table. I have not found it that useful for lets say a single record of data since you could easily just get a partial view from the server via an html type ajax call. It really shines when you dynamically add/remove rows from a list in the DOM. I have not found an alternative that meets the functionality of the jQuery template and helps of course that Microsoft officially supports it. In future versions of the jQuery plug-in it may even ship as part of the standard jQuery library and with future versions of Visual Studio. jQuery Data Linking: In short I was fascinated by it initially by how with one line of code I can sync up my JSON object with my form elements. That's where my enthusiasm stopped. It was one-line to let is deal with syncing up your form with your JSON object, but it is not bidirectional as they state and I tried all the work arounds they suggested and none of them work. The problem is that when you update your JSON object it DOES NOT sync it up with your form. In an example, accounts are being edited client side by selecting the account from a list by clicking on the row, it then fetches the entire account JSON object via ajax json-type call and then refreshes the form with the account’s details from the new JSON object. What is the use of syncing up my JSON with the form if I still have to programmatically sync up my new JSON object with each DOM property?! So you may ask: “what is the alternative”? Good question and the same one I was pondering, maybe I can just use it for keeping my from n sync with my JSON object so I can post that JSON object back to the server and update my database. That’s when I discovered Knockout: Knockout It addresses the issues mentioned above and also supports event handling through the observer pattern. Not wanting to go into detail here, Steve Sanderson, the creator of Knockout, has already done a terrific job of that, thanks Steve for a great plug-in! Best of all it integrates perfectly with the jQuery Templating engine as well. I have not found an alternative to this plugin that supports the depth and width of functionality and would recommend it to anyone. The only drawback is the embedded html attributes (data-bind=””) tags that you have to add to the HTML, in my opinion tying your behavior to your HTML, where I like to separate behavior from HTML as well as CSS, so the HTML is purely to define content, not styling or behavior. But there are plusses to this as well and also a nifty work around to this that I will just shortly mention here with an example. Instead of data binding an html tag with knockout event handling like so:  <%=Html.TextBox("PrepayDiscount", String.Empty, new { @class = "number" })%>   Do: <%=Html.DataBoundTextBox("PrepayDiscount", String.Empty, new { @class = "number" })%>   The html extension above then takes care of the internals and you could then swap Knockout for something else if you want to inside the extension and keep the HTML plugin agnostic. Here is what the extension looks like, you can easily build a whole library to support all kinds of data binding options from this:      public static class HtmlExtensions       {         public static MvcHtmlString DataBoundTextBox(this HtmlHelper helper, string name, object value, object htmlAttributes)         {             var dic = new RouteValueDictionary(htmlAttributes);             dic.Add("data-bind", String.Format("value: {0}", name));             return helper.TextBox(name, value, dic);         }       }   Hope this helps in making a decision when and where to consider jQuery templating, data linking and Knockout.

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  • Consolidation Strategy References

    - by BuckWoody
    I have a presentation that I give on SQL Server Consolidation Strategies, and in that presentation I talk about a few links that are useful. Here are some that I’ve found – feel free to comment on more, or if these links go stale:   Consolidation using SQL Server: http://msdn.microsoft.com/en-us/library/ee692366.aspx SQL Server Consolidation Guidance:  http://msdn.microsoft.com/en-us/library/ee819082.aspx   More references for SQL Server and Hyper-V: http://www.sqlskills.com/BLOGS/KIMBERLY/post/Virtualization-with-SQL-Server.aspx Quick overview of Virtual Server licensing implications: http://www.microsoft.com/uk/licensing/morethan250/learn/virtualisation.mspx SQL Server and Hyper-V best practices: http://sqlcat.com/whitepapers/archive/2008/10/03/running-sql-server-2008-in-a-hyper-v-environment-best-practices-and-performance-recommendations.aspx High-Availability and Hyper-V: http://technet.microsoft.com/en-us/magazine/2008.10.higha.aspx Virtualization Calculator: http://www.microsoft.com/Windowsserver2008/en/us/hyperv-calculators.aspx   May not be current, but here’s a whitepaper from VMWare for SQL Server: http://www.vmware.com/files/pdf/SQLServerWorkloads.pdf More information on SQL Server and VMWare: http://blogs.msdn.com/cindygross/archive/2009/10/23/considerations-for-installing-sql-server-on-vmware.aspx   Server Virtualization Validation Program: http://www.windowsservercatalog.com/svvp.aspx?svvppage=svvp.htm Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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  • Windows Azure Learning Plan - Security

    - by BuckWoody
    This is one in a series of posts on a Windows Azure Learning Plan. You can find the main post here. This one deals with Security for  Windows Azure.   General Security Information Overview and general  information about Windows Azure Security - what it is, how it works, and where you can learn more. General Security Whitepaper – answers most questions http://blogs.msdn.com/b/usisvde/archive/2010/08/10/security-white-paper-on-windows-azure-answers-many-faq.aspx Windows Azure Security Notes from the Patterns and Practices site http://blogs.msdn.com/b/jmeier/archive/2010/08/03/now-available-azure-security-notes-pdf.aspx Overview of Azure Security http://www.windowsecurity.com/articles/Microsoft-Azure-Security-Cloud.html Azure Security Resources http://reddevnews.com/articles/2010/08/19/microsoft-releases-windows-azure-security-resources.aspx Cloud Computing Security Considerations http://www.microsoft.com/downloads/en/details.aspx?FamilyID=68fedf9c-1c27-4642-aa5b-0a34472303ea&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+MicrosoftDownloadCenter+%28Microsoft+Download+Center Security in Cloud Computing – a Microsoft Perspective http://www.microsoft.com/downloads/en/details.aspx?FamilyID=7c8507e8-50ca-4693-aa5a-34b7c24f4579&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+MicrosoftDownloadCenter+%28Microsoft+Download+Center Physical Security for Microsoft’s Online Computing Information on the Infrastructure and Locations for Azure Physical Security. The Global Foundation Services Group at Microsoft handles physical security http://www.globalfoundationservices.com/security/index.html Microsoft’s Security Response Center http://www.microsoft.com/security/msrc/ Software Security for Microsoft’s Online Computing Steps we take as a company to develop secure software Windows Azure is developed using the Trustworthy Computing Initiative http://www.microsoft.com/about/twc/en/us/default.aspx and  http://msdn.microsoft.com/en-us/library/ms995349.aspx Identity and Access in the Cloud http://blogs.msdn.com/b/technology_titbits_by_rajesh_makhija/archive/2010/10/29/identity-and-access-in-the-cloud.aspx Security Steps you should take While Microsoft takes great pains to secure the infrastructure, platform and code for Windows Azure, you have a responsibility to write secure code. These pointers can help you do that. Securing your cloud architecture, step-by-step http://technet.microsoft.com/en-us/magazine/gg296364.aspx Security Guidelines for Windows Azure http://redmondmag.com/articles/2010/06/15/microsoft-issues-security-guidelines-for-windows-azure.aspx  Best Practices for Windows Azure Security http://blogs.msdn.com/b/vbertocci/archive/2010/06/14/security-best-practices-for-developing-windows-azure-applications.aspx Active Directory and Windows Azure http://blogs.msdn.com/b/plankytronixx/archive/2010/10/22/projecting-your-active-directory-identity-to-the-azure-cloud.aspx Understanding Encryption (great overview and tutorial) http://blogs.msdn.com/b/plankytronixx/archive/2010/10/23/crypto-primer-understanding-encryption-public-private-key-signatures-and-certificates.aspx Securing your Connection Strings (SQL Azure) http://blogs.msdn.com/b/sqlazure/archive/2010/09/07/10058942.aspx Getting started with Windows Identity Foundation (WIF) quickly http://blogs.msdn.com/b/alikl/archive/2010/10/26/windows-identity-foundation-wif-fast-track.aspx

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  • Windows Azure Learning Plan - SQL Azure

    - by BuckWoody
    This is one in a series of posts on a Windows Azure Learning Plan. You can find the main post here. This one deals with Security for  Windows Azure.   Overview and Training Overview and general  information about SQL Azure - what it is, how it works, and where you can learn more. General Overview (sign-in required, but free) http://social.technet.microsoft.com/wiki/contents/articles/inside-sql-azure.aspx General Guidelines and Limitations http://msdn.microsoft.com/en-us/library/ee336245.aspx Microsoft SQL Azure Documentation http://msdn.microsoft.com/en-us/windowsazure/sqlazure/default.aspx Samples and Learning Sources for online and other SQL Azure Training Free Online Training http://blogs.msdn.com/b/sqlazure/archive/2010/05/06/10007449.aspx 60-minute Overview (webcast) https://msevents.microsoft.com/CUI/WebCastEventDetails.aspx?culture=en-US&EventID=1032458620&CountryCode=US Architecture SQL Azure Internals and Architectures for Scale Out and other use-cases. SQL Azure Architecture http://social.technet.microsoft.com/wiki/contents/articles/inside-sql-azure.aspx Scale-out Architectures http://tinyurl.com/247zm33 Federation Concepts http://tinyurl.com/34eew2w Use-Cases http://blogical.se/blogs/jahlen/archive/2010/11/23/sql-azure-why-use-it-and-what-makes-it-different-from-sql-server.aspx SQL Azure Security Model (video) http://www.msdev.com/Directory/Description.aspx?EventId=1491 Administration Standard Administrative Tasks and Tools Tools Options http://social.technet.microsoft.com/wiki/contents/articles/overview-of-tools-to-use-with-sql-azure.aspx SQL Azure Migration Wizard http://sqlazuremw.codeplex.com/ Managing Databases and Login Security http://msdn.microsoft.com/en-us/library/ee336235.aspx General Security for SQL Azure http://msdn.microsoft.com/en-us/library/ff394108.aspx Backup and Recovery http://social.technet.microsoft.com/wiki/contents/articles/sql-azure-backup-and-restore-strategy.aspx More Backup and Recovery Options http://social.technet.microsoft.com/wiki/contents/articles/current-options-for-backing-up-data-with-sql-azure.aspx Syncing Large Databases to SQL Azure http://blogs.msdn.com/b/sync/archive/2010/09/24/how-to-sync-large-sql-server-databases-to-sql-azure.aspx Programming Programming Patterns and Architectures for SQL Azure systems. How to Build and Manage a Business Database on SQL Azure http://tinyurl.com/25q5v6g Connection Management http://social.technet.microsoft.com/wiki/contents/articles/sql-azure-connection-management-in-sql-azure.aspx Transact-SQL Supported by SQL Azure http://msdn.microsoft.com/en-us/library/ee336250.aspx

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  • find . -type l says missing argument

    - by Sebi
    I want to find all symbolic links in the current directory and below. Therefore, I used: find . -type l Running that clears the screen showing "Pattern not found (press RETURN)" at the bottom of the screen. After pressing return, I get: find: missing argument to `-type' Here some system details: Ubuntu 10.04 LTS 64Bit zsh 4.3.10 (x86_64-unknown-linux-gnu) happens also in Screen version 4.00.03jw4 (FAU) 2-May-06 find (GNU findutils) 4.4.2 So how do I search for symbolic links so that I can grep in their names?

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  • Windows Azure Use Case: Hybrid Applications

    - by BuckWoody
    This is one in a series of posts on when and where to use a distributed architecture design in your organization's computing needs. You can find the main post here: http://blogs.msdn.com/b/buckwoody/archive/2011/01/18/windows-azure-and-sql-azure-use-cases.aspx  Description: Organizations see the need for computing infrastructures that they can “rent” or pay for only when they need them. They also understand the benefits of distributed computing, but do not want to create this infrastructure themselves. However, they may have considerations that prevent them from moving all of their current IT investment to a distributed environment: Private data (do not want to send or store sensitive data off-site) High dollar investment in current infrastructure Applications currently running well, but may need additional periodic capacity Current applications not designed in a stateless fashion In these situations, a “hybrid” approach works best. In fact, with Windows Azure, a hybrid approach is an optimal way to implement distributed computing even when the stipulations above do not apply. Keeping a majority of the computing function in an organization local while exploring and expanding that footprint into Windows and SQL Azure is a good migration or expansion strategy. A “hybrid” architecture merely means that part of a computing cycle is shared between two architectures. For instance, some level of computing might be done in a Windows Azure web-based application, while the data is stored locally at the organization. Implementation: There are multiple methods for implementing a hybrid architecture, in a spectrum from very little interaction from the local infrastructure to Windows or SQL Azure. The patterns fall into two broad schemas, and even these can be mixed. 1. Client-Centric Hybrid Patterns In this pattern, programs are coded such that the client system sends queries or compute requests to multiple systems. The “client” in this case might be a web-based codeset actually stored on another system (which acts as a client, the user’s device serving as the presentation layer) or a compiled program. In either case, the code on the client requestor carries the burden of defining the layout of the requests. While this pattern is often the easiest to code, it’s the most brittle. Any change in the architecture must be reflected on each client, but this can be mitigated by using a centralized system as the client such as in the web scenario. 2. System-Centric Hybrid Patterns Another approach is to create a distributed architecture by turning on-site systems into “services” that can be called from Windows Azure using the service Bus or the Access Control Services (ACS) capabilities. Code calls from a series of in-process client application. In this pattern you move the “client” interface into the server application logic. If you do not wish to change the application itself, you can “layer” the results of the code return using a product (such as Microsoft BizTalk) that exposes a Web Services Definition Language (WSDL) endpoint to Windows Azure using the Application Fabric. In effect, this is similar to creating a Service Oriented Architecture (SOA) environment, and has the advantage of de-coupling your computing architecture. If each system offers a “service” of the results of some software processing, the operating system or platform becomes immaterial, assuming it adheres to a service contract. There are important considerations when you federate a system, whether to Windows or SQL Azure or any other distributed architecture. While these considerations are consistent with coding any application for distributed computing, they are especially important for a hybrid application. Connection resiliency - Applications on-premise normally have low-latency and good connection properties, something you’re not always guaranteed in a distributed and hybrid application. Whether a centralized client or a distributed one, the code should be able to handle extended retry logic. Authorization and Access - In a single authorization environment like a Active Directory domain, security is handled at a user-password level. In a distributed computing environment, you have more options. You can mitigate this with  using The Windows Azure Application Fabric feature of ACS to make the Azure application aware of the App Fabric as an ADFS provider. However, a claims-based authentication structure is often a superior choice.  Consistency and Concurrency - When you have a Relational Database Management System (RDBMS), Consistency and Concurrency are part of the design. In a Service Architecture, you need to plan for sequential message handling and lifecycle. Resources: How to Build a Hybrid On-Premise/In Cloud Application: http://blogs.msdn.com/b/ignitionshowcase/archive/2010/11/09/how-to-build-a-hybrid-on-premise-in-cloud-application.aspx  General Architecture guidance: http://blogs.msdn.com/b/buckwoody/archive/2010/12/21/windows-azure-learning-plan-architecture.aspx   

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  • Windows Azure Use Case: Web Applications

    - by BuckWoody
    This is one in a series of posts on when and where to use a distributed architecture design in your organization's computing needs. You can find the main post here: http://blogs.msdn.com/b/buckwoody/archive/2011/01/18/windows-azure-and-sql-azure-use-cases.aspx  Description: Many applications have a requirement to be located outside of the organization’s internal infrastructure control. For instance, the company website for a brick-and-mortar retail company may want to post not only static but interactive content to be available to their external customers, and not want the customers to have access inside the organization’s firewall. There are also cases of pure web applications used for a great many of the internal functions of the business. This allows for remote workers, shared customer/employee workloads and data and other advantages. Some firms choose to host these web servers internally, others choose to contract out the infrastructure to an “ASP” (Application Service Provider) or an Infrastructure as a Service (IaaS) company. In any case, the design of these applications often resembles the following: In this design, a server (or perhaps more than one) hosts the presentation function (http or https) access to the application, and this same system may hold the computational aspects of the program. Authorization and Access is controlled programmatically, or is more open if this is a customer-facing application. Storage is either placed on the same or other servers, hosted within an RDBMS or NoSQL database, or a combination of the options, all coded into the application. High-Availability within this scenario is often the responsibility of the architects of the application, and by purchasing more hosting resources which must be built, licensed and configured, and manually added as demand requires, although some IaaS providers have a partially automatic method to add nodes for scale-out, if the architecture of the application supports it. Disaster Recovery is the responsibility of the system architect as well. Implementation: In a Windows Azure Platform as a Service (PaaS) environment, many of these architectural considerations are designed into the system. The Azure “Fabric” (not to be confused with the Azure implementation of Application Fabric - more on that in a moment) is designed to provide scalability. Compute resources can be added and removed programmatically based on any number of factors. Balancers at the request-level of the Fabric automatically route http and https requests. The fabric also provides High-Availability for storage and other components. Disaster recovery is a shared responsibility between the facilities (which have the ability to restore in case of catastrophic failure) and your code, which should build in recovery. In a Windows Azure-based web application, you have the ability to separate out the various functions and components. Presentation can be coded for multiple platforms like smart phones, tablets and PC’s, while the computation can be a single entity shared between them. This makes the applications more resilient and more object-oriented, and lends itself to a SOA or Distributed Computing architecture. It is true that you could code up a similar set of functionality in a traditional web-farm, but the difference here is that the components are built into the very design of the architecture. The API’s and DLL’s you call in a Windows Azure code base contains components as first-class citizens. For instance, if you need storage, it is simply called within the application as an object.  Computation has multiple options and the ability to scale linearly. You also gain another component that you would either have to write or bolt-in to a typical web-farm: the Application Fabric. This Windows Azure component provides communication between applications or even to on-premise systems. It provides authorization in either person-based or claims-based perspectives. SQL Azure provides relational storage as another option, and can also be used or accessed from on-premise systems. It should be noted that you can use all or some of these components individually. Resources: Design Strategies for Scalable Active Server Applications - http://msdn.microsoft.com/en-us/library/ms972349.aspx  Physical Tiers and Deployment  - http://msdn.microsoft.com/en-us/library/ee658120.aspx

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  • Windows Azure Use Case: Agility

    - by BuckWoody
    This is one in a series of posts on when and where to use a distributed architecture design in your organization's computing needs. You can find the main post here: http://blogs.msdn.com/b/buckwoody/archive/2011/01/18/windows-azure-and-sql-azure-use-cases.aspx  Description: Agility in this context is defined as the ability to quickly develop and deploy an application. In theory, the speed at which your organization can develop and deploy an application on available hardware is identical to what you could deploy in a distributed environment. But in practice, this is not always the case. Having an option to use a distributed environment can be much faster for the deployment and even the development process. Implementation: When an organization designs code, they are essentially becoming a Software-as-a-Service (SaaS) provider to their own organization. To do that, the IT operations team becomes the Infrastructure-as-a-Service (IaaS) to the development teams. From there, the software is developed and deployed using an Application Lifecycle Management (ALM) process. A simplified view of an ALM process is as follows: Requirements Analysis Design and Development Implementation Testing Deployment to Production Maintenance In an on-premise environment, this often equates to the following process map: Requirements Business requirements formed by Business Analysts, Developers and Data Professionals. Analysis Feasibility studies, including physical plant, security, manpower and other resources. Request is placed on the work task list if approved. Design and Development Code written according to organization’s chosen methodology, either on-premise or to multiple development teams on and off premise. Implementation Code checked into main branch. Code forked as needed. Testing Code deployed to on-premise Testing servers. If no server capacity available, more resources procured through standard budgeting and ordering processes. Manual and automated functional, load, security, etc. performed. Deployment to Production Server team involved to select platform and environments with available capacity. If no server capacity available, standard budgeting and procurement process followed. If no server capacity available, systems built, configured and put under standard organizational IT control. Systems configured for proper operating systems, patches, security and virus scans. System maintenance, HA/DR, backups and recovery plans configured and put into place. Maintenance Code changes evaluated and altered according to need. In a distributed computing environment like Windows Azure, the process maps a bit differently: Requirements Business requirements formed by Business Analysts, Developers and Data Professionals. Analysis Feasibility studies, including budget, security, manpower and other resources. Request is placed on the work task list if approved. Design and Development Code written according to organization’s chosen methodology, either on-premise or to multiple development teams on and off premise. Implementation Code checked into main branch. Code forked as needed. Testing Code deployed to Azure. Manual and automated functional, load, security, etc. performed. Deployment to Production Code deployed to Azure. Point in time backup and recovery plans configured and put into place.(HA/DR and automated backups already present in Azure fabric) Maintenance Code changes evaluated and altered according to need. This means that several steps can be removed or expedited. It also means that the business function requesting the application can be held directly responsible for the funding of that request, speeding the process further since the IT budgeting process may not be involved in the Azure scenario. An additional benefit is the “Azure Marketplace”, In effect this becomes an app store for Enterprises to select pre-defined code and data applications to mesh or bolt-in to their current code, possibly saving development time. Resources: Whitepaper download- What is ALM?  http://go.microsoft.com/?linkid=9743693  Whitepaper download - ALM and Business Strategy: http://go.microsoft.com/?linkid=9743690  LiveMeeting Recording on ALM and Windows Azure (registration required, but free): http://www.microsoft.com/uk/msdn/visualstudio/contact-us.aspx?sbj=Developing with Windows Azure (ALM perspective) - 10:00-11:00 - 19th Jan 2011

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  • Windows Azure Use Case: High-Performance Computing (HPC)

    - by BuckWoody
    This is one in a series of posts on when and where to use a distributed architecture design in your organization's computing needs. You can find the main post here: http://blogs.msdn.com/b/buckwoody/archive/2011/01/18/windows-azure-and-sql-azure-use-cases.aspx  Description: High-Performance Computing (also called Technical Computing) at its most simplistic is a layout of computer workloads where a “head node” accepts work requests, and parses them out to “worker nodes'”. This is useful in cases such as scientific simulations, drug research, MatLab work and where other large compute loads are required. It’s not the immediate-result type computing many are used to; instead, a “job” or group of work requests is sent to a cluster of computers and the worker nodes work on individual parts of the calculations and return the work to the scheduler or head node for the requestor in a batch-request fashion. This is typical to the way that many mainframe computing use-cases work. You can use commodity-based computers to create an HPC Cluster, such as the Linux application called Beowulf, and Microsoft has a server product for HPC using standard computers, called the Windows Compute Cluster that you can read more about here. The issue with HPC (from any vendor) that some organization have is the amount of compute nodes they need. Having too many results in excess infrastructure, including computers, buildings, storage, heat and so on. Having too few means that the work is slower, and takes longer to return a result to the calling application. Unless there is a consistent level of work requested, predicting the number of nodes is problematic. Implementation: Recently, Microsoft announced an internal partnership between the HPC group (Now called the Technical Computing Group) and Windows Azure. You now have two options for implementing an HPC environment using Windows. You can extend the current infrastructure you have for HPC by adding in Compute Nodes in Windows Azure, using a “Broker Node”.  You can then purchase time for adding machines, and then stop paying for them when the work is completed. This is a common pattern in groups that have a constant need for HPC, but need to “burst” that load count under certain conditions. The second option is to install only a Head Node and a Broker Node onsite, and host all Compute Nodes in Windows Azure. This is often the pattern for organizations that need HPC on a scheduled and periodic basis, such as financial analysis or actuarial table calculations. References: Blog entry on Hybrid HPC with Windows Azure: http://blogs.msdn.com/b/ignitionshowcase/archive/2010/12/13/high-performance-computing-on-premise-and-in-the-windows-azure-cloud.aspx  Links for further research on HPC, includes Windows Azure information: http://blogs.msdn.com/b/ncdevguy/archive/2011/02/16/handy-links-for-hpc-and-azure.aspx 

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  • The Windows Azure Software Development Kit (SDK) and the Windows Azure Training Kit (WATK)

    - by BuckWoody
    Windows Azure is a platform that allows you to write software, run software, or use software that we've already written. We provide lots of resources to help you do that - many can be found right here in this blog series. There are two primary resources you can use, and it's important to understand what they are and what they do. The Windows Azure Software Development Kit (SDK) Actually, this isn't one resource. We have SDK's for multiple development environments, such as Visual Studio and also Eclipse, along with SDK's for iOS, Android and other environments. Windows Azure is a "back end", so almost any technology or front end system can use it to solve a problem. The SDK's are primarily for development. In the case of Visual Studio, you'll get a runtime environment for Windows Azure which allows you to develop, test and even run code all locally - you do not have to be connected to Windows Azure at all, until you're ready to deploy. You'll also get a few samples and codeblocks, along with all of the libraries you need to code with Windows Azure in .NET, PHP, Ruby, Java and more. The SDK is updated frequently, so check this location to find the latest for your environment and language - just click the bar that corresponds to what you want: http://www.windowsazure.com/en-us/develop/downloads/ The Windows Azure Training Kit (WATK) Whether you're writing code, using Windows Azure Virtual Machines (VM's) or working with Hadoop, you can use the WATK to get examples, code, PowerShell scripts, PowerPoint decks, training videos and much more. This should be your second download after the SDK. This is all of the training you need to get started, and even beyond. The WATK is updated frequently - and you can find the latest one here: http://www.windowsazure.com/en-us/develop/net/other-resources/training-kit/     There are many other resources - again, check the http://windowsazure.com site, the community newsletter (which introduces the latest features), and my blog for more.

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  • Windows Azure Learning Plan - Compute

    - by BuckWoody
    This is one in a series of posts on a Windows Azure Learning Plan. You can find the main post here. This one deals with the "compute" function of Windows Azure, which includes Configuration Files, the Web Role, the Worker Role, and the VM Role. There is a general programming guide for Windows Azure that you can find here to help with the overall process.   Configuration Files Configuration Files define the environment for a Windows Azure application, similar to an ASP.NET application. This section explains how to work with these. General Introduction and Overview http://blogs.itmentors.com/bill/2009/11/04/configuration-files-and-windows-azure/ Service Definition File Schema http://msdn.microsoft.com/en-us/library/ee758711.aspx Service Configuration File Schema http://msdn.microsoft.com/en-us/library/ee758710.aspx  Windows Azure Web Role The Web Role runs code (such as ASP pages) that require a User Interface. Web Role "Boot Camp" Video  https://msevents.microsoft.com/CUI/WebCastEventDetails.aspx?culture=en-US&EventID=1032470854&CountryCode=US Web Role Deployment Checklist http://blogs.infragistics.com/blogs/anton_staykov/archive/2010/06/30/windows-azure-web-role-deployment-checklist.aspx  Using a Web Role as a Worker Role for Small Applications http://www.31a2ba2a-b718-11dc-8314-0800200c9a66.com/2010/12/how-to-combine-worker-and-web-role-in.html Windows Azure Worker Role  The Worker Role is used for code that does not require a direct User Interface. Worker Role "Boot Camp" Video https://msevents.microsoft.com/CUI/WebCastEventDetails.aspx?culture=en-US&EventID=1032470871&CountryCode=US Worker Role versus Web Roles http://msdn.microsoft.com/en-us/library/gg433012.aspx Deploying other applications (like Java) in a Windows Azure Worker Role http://blogs.msdn.com/b/mariok/archive/2011/01/05/deploying-java-applications-in-azure.aspx Windows Azure VM Role The Windows Azure VM Role is an Operating System-level mechanism for code deployment. VM Role Overview and Details  http://msdn.microsoft.com/en-us/library/gg465398.aspx  The proper use of the VM Role http://blogs.msdn.com/b/buckwoody/archive/2010/12/28/the-proper-use-of-the-vm-role-in-windows-azure.aspx

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  • Windows Azure Use Case: New Development

    - by BuckWoody
    This is one in a series of posts on when and where to use a distributed architecture design in your organization's computing needs. You can find the main post here: http://blogs.msdn.com/b/buckwoody/archive/2011/01/18/windows-azure-and-sql-azure-use-cases.aspx Description: Computing platforms evolve over time. Originally computers were directed by hardware wiring - that, the “code” was the path of the wiring that directed an electrical signal from one component to another, or in some cases a physical switch controlled the path. From there software was developed, first in a very low machine language, then when compilers were created, computer languages could more closely mimic written statements. These language statements can be compiled into the lower-level machine language still used by computers today. Microprocessors replaced logic circuits, sometimes with fewer instructions (Reduced Instruction Set Computing, RISC) and sometimes with more instructions (Complex Instruction Set Computing, CISC). The reason this history is important is that along each technology advancement, computer code has adapted. Writing software for a RISC architecture is significantly different than developing for a CISC architecture. And moving to a Distributed Architecture like Windows Azure also has specific implementation details that our code must follow. But why make a change? As I’ve described, we need to make the change to our code to follow advances in technology. There’s no point in change for its own sake, but as a new paradigm offers benefits to our users, it’s important for us to leverage those benefits where it makes sense. That’s most often done in new development projects. It’s a far simpler task to take a new project and adapt it to Windows Azure than to try and retrofit older code designed in a previous computing environment. We can still use the same coding languages (.NET, Java, C++) to write code for Windows Azure, but we need to think about the architecture of that code on a new project so that it runs in the most efficient, cost-effective way in a Distributed Architecture. As we receive new requests from the organization for new projects, a distributed architecture paradigm belongs in the decision matrix for the platform target. Implementation: When you are designing new applications for Windows Azure (or any distributed architecture) there are many important details to consider. But at the risk of over-simplification, there are three main concepts to learn and architect within the new code: Stateless Programming - Stateless program is a prime concept within distributed architectures. Rather than each server owning the complete processing cycle, the information from an operation that needs to be retained (the “state”) should be persisted to another location c(like storage) common to all machines involved in the process.  An interesting learning process for Stateless Programming (although not unique to this language type) is to learn Functional Programming. Server-Side Processing - Along with developing using a Stateless Design, the closer you can locate the code processing to the data, the less expensive and faster the code will run. When you control the network layer, this is less important, since you can send vast amounts of data between the server and client, allowing the client to perform processing. In a distributed architecture, you don’t always own the network, so it’s performance is unpredictable. Also, you may not be able to control the platform the user is on (such as a smartphone, PC or tablet), so it’s imperative to deliver only results and graphical elements where possible.  Token-Based Authentication - Also called “Claims-Based Authorization”, this code practice means instead of allowing a user to log on once and then running code in that context, a more granular level of security is used. A “token” or “claim”, often represented as a Certificate, is sent along for a series or even one request. In other words, every call to the code is authenticated against the token, rather than allowing a user free reign within the code call. While this is more work initially, it can bring a greater level of security, and it is far more resilient to disconnections. Resources: See the references of “Nondistributed Deployment” and “Distributed Deployment” at the top of this article for more information with graphics:  http://msdn.microsoft.com/en-us/library/ee658120.aspx  Stack Overflow has a good thread on functional programming: http://stackoverflow.com/questions/844536/advantages-of-stateless-programming  Another good discussion on Stack Overflow on server-side processing is here: http://stackoverflow.com/questions/3064018/client-side-or-server-side-processing Claims Based Authorization is described here: http://msdn.microsoft.com/en-us/magazine/ee335707.aspx

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  • Windows Azure Learning Plan - Application Fabric

    - by BuckWoody
    This is one in a series of posts on a Windows Azure Learning Plan. You can find the main post here. This one deals with the Application Fabric for Windows Azure. It serves three main purposes - Access Control, Caching, and as a Service Bus.   Overview and Training Overview and general  information about the Azure Application Fabric, - what it is, how it works, and where you can learn more. General Introduction and Overview http://msdn.microsoft.com/en-us/library/ee922714.aspx Access Control Service Overview http://msdn.microsoft.com/en-us/magazine/gg490345.aspx Microsoft Documentation http://msdn.microsoft.com/en-gb/windowsazure/netservices.aspx Learning and Examples Sources for online and other Azure Appllications Fabric training Application Fabric SDK http://www.microsoft.com/downloads/en/details.aspx?FamilyID=39856a03-1490-4283-908f-c8bf0bfad8a5&displaylang=en Application Fabric Caching Service Primer http://blogs.msdn.com/b/appfabriccat/archive/2010/11/29/azure-appfabric-caching-service-soup-to-nuts-primer.aspx?wa=wsignin1.0 Hands-On Lab: Building Windows Azure Applications with the Caching Service http://www.wadewegner.com/2010/11/hands-on-lab-building-windows-azure-applications-with-the-caching-service/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+WadeWegner+%28Wade+Wegner+-+Technical%29 Architecture  Azure Application Fabric Internals and Architectures for Scale Out and other use-cases. Azure Application Fabric Architecture Guide http://blogs.msdn.com/b/yasserabdelkader/archive/2010/09/12/release-of-windows-server-appfabric-architecture-guide.aspx Windows Azure AppFabric Service Bus - A Deep Dive (Video) http://www.msteched.com/2010/Europe/ASI410 Access Control Service (ACS) High Level Architecture http://blogs.msdn.com/b/alikl/archive/2010/09/28/azure-appfabric-access-control-service-acs-v-2-0-high-level-architecture-web-application-scenario.aspx Applications  and Programming Programming Patterns and Architectures for SQL Azure systems. Various Examples from PDC 2010 on using Azure Application as a Service Bus http://tinyurl.com/2dcnt8o Creating a Distributed Cache using the Application Fabric http://blog.structuretoobig.com/post/2010/08/31/Creating-a-Poor-Mane28099s-Distributed-Cache-in-Azure.aspx  Azure Application Fabric Java SDK http://jdotnetservices.com/

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  • Windows Azure Learning Plan - Architecture

    - by BuckWoody
    This is one in a series of posts on a Windows Azure Learning Plan. You can find the main post here. This one deals with what an Architect needs to know about Windows Azure.   General Architectural Guidance Overview and general  information about Azure - what it is, how it works, and where you can learn more. Cloud Computing, A Crash Course for Architects (Video) http://www.msteched.com/2010/Europe/ARC202 Patterns and Practices for Cloud Development http://msdn.microsoft.com/en-us/library/ff898430.aspx Design Patterns, Anti-Patterns and Windows Azure http://blogs.msdn.com/b/ignitionshowcase/archive/2010/11/27/design-patterns-anti-patterns-and-windows-azure.aspx Application Patterns for the Cloud http://blogs.msdn.com/b/kashif/archive/2010/08/07/application-patterns-for-the-cloud.aspx Architecting Applications for High Scalability (Video) http://www.msteched.com/2010/Europe/ARC309 David Aiken on Azure Architecture Patterns (Video) http://blogs.msdn.com/b/architectsrule/archive/2010/09/09/arcast-tv-david-aiken-on-azure-architecture-patterns.aspx Cloud Application Architecture Patterns (Video) http://blogs.msdn.com/b/bobfamiliar/archive/2010/10/19/cloud-application-architecture-patterns-by-david-platt.aspx 10 Things Every Architect Needs to Know about Windows Azure http://geekswithblogs.net/iupdateable/archive/2010/10/20/slides-and-links-for-windows-azure-platform-session-at-software.aspx Key Differences Between Public and Private Clouds http://blogs.msdn.com/b/kadriu/archive/2010/10/24/key-differences-between-public-and-private-clouds.aspx Microsoft Application Platform at a Glance http://blogs.msdn.com/b/jmeier/archive/2010/10/30/microsoft-application-platform-at-a-glance.aspx Windows Azure is not just about Roles http://vikassahni.wordpress.com/2010/11/17/windows-azure-is-not-just-about-roles/ Example Application for Windows Azure http://msdn.microsoft.com/en-us/library/ff966482.aspx Implementation Guidance Practical applications for the architect to consider 5 Enterprise steps for adopting a Platform as a Service http://blogs.msdn.com/b/davidmcg/archive/2010/12/02/5-enterprise-steps-for-adopting-a-platform-as-a-service.aspx?wa=wsignin1.0 Performance-Based Scaling in Windows Azure http://msdn.microsoft.com/en-us/magazine/gg232759.aspx Windows Azure Guidance for the Development Process http://blogs.msdn.com/b/eugeniop/archive/2010/04/01/windows-azure-guidance-development-process.aspx Microsoft Developer Guidance Maps http://blogs.msdn.com/b/jmeier/archive/2010/10/04/developer-guidance-ia-at-a-glance.aspx How to Build a Hybrid On-Premise/In Cloud Application http://blogs.msdn.com/b/ignitionshowcase/archive/2010/11/09/how-to-build-a-hybrid-on-premise-in-cloud-application.aspx A Common Scenario of Multi-instances in Windows Azure http://blogs.msdn.com/b/windows-azure-support/archive/2010/11/03/a-common-scenario-of-multi_2d00_instances-in-windows-azure-.aspx Slides and Links for Windows Azure Platform Best Practices http://geekswithblogs.net/iupdateable/archive/2010/09/29/slides-and-links-for-windows-azure-platform-best-practices-for.aspx AppFabric Architecture and Deployment Topologies guide http://blogs.msdn.com/b/appfabriccat/archive/2010/09/10/appfabric-architecture-and-deployment-topologies-guide-now-available-via-microsoft-download-center.aspx Windows Azure Platform Appliance http://www.microsoft.com/windowsazure/appliance/ Integrating Cloud Technologies into Your Organization Interoperability with Open Source and other applications; business and cost decisions Interoperability Labs at Microsoft http://www.interoperabilitybridges.com/ Windows Azure Service Level Agreements http://www.microsoft.com/windowsazure/sla/

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  • SQL Server for the Oracle DBA Links

    - by BuckWoody
    I do a presentation (and a class) called "SQL Server for the Oracle DBA". It's a non-marketing overview that gives you the basics of working with SQL Server if you're already familiar wtih how Oracle works. This class and these links DO NOT help you with "Why should I use Oracle/SQL Server instead of Oracle/SQL Server" - I'll assume you're already there, and if not, there are LOTS of sites to help you make that decision. Although these links might contain slight marketing slants (I don't control them) I've tried to get the best links I can. Feel free to comment here to add more/better links. As such, these aren't links that help you work with Oracle - they are links to help you work with SQL Server. Some of them contain more information than you actually need, others don't have near enough. Taken together (and with the class) you're able to get done what you need to do. "Practical SQL Server for Oracle Professionals" - A Microsoft Whitepaper, probably the best place to get started: http://download.microsoft.com/download/6/9/d/69d1fea7-5b42-437a-b3ba-a4ad13e34ef6/SQLServer2008forOracle.docx Free Training: http://technet.microsoft.com/en-us/sqlserver/dd548020.aspx Classroom training (will cost you): http://www.microsoft.com/learning/en/us/course.aspx?ID=50068A&locale=en-us Terminology Differences: http://www.associatedcontent.com/article/2383466/oracle_and_sql_server_basic_terminology.html Datatype mapping between Oracle and SQL Server: http://msdn.microsoft.com/en-us/library/ms151817.aspx The "other" direction - can still be useful for the Oracle professional to see the other side: http://blog.benday.com/archive/2008/10/23/23195.aspx Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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  • Windows Azure Use Case: New Development

    - by BuckWoody
    This is one in a series of posts on when and where to use a distributed architecture design in your organization's computing needs. You can find the main post here: http://blogs.msdn.com/b/buckwoody/archive/2011/01/18/windows-azure-and-sql-azure-use-cases.aspx Description: Computing platforms evolve over time. Originally computers were directed by hardware wiring - that, the “code” was the path of the wiring that directed an electrical signal from one component to another, or in some cases a physical switch controlled the path. From there software was developed, first in a very low machine language, then when compilers were created, computer languages could more closely mimic written statements. These language statements can be compiled into the lower-level machine language still used by computers today. Microprocessors replaced logic circuits, sometimes with fewer instructions (Reduced Instruction Set Computing, RISC) and sometimes with more instructions (Complex Instruction Set Computing, CISC). The reason this history is important is that along each technology advancement, computer code has adapted. Writing software for a RISC architecture is significantly different than developing for a CISC architecture. And moving to a Distributed Architecture like Windows Azure also has specific implementation details that our code must follow. But why make a change? As I’ve described, we need to make the change to our code to follow advances in technology. There’s no point in change for its own sake, but as a new paradigm offers benefits to our users, it’s important for us to leverage those benefits where it makes sense. That’s most often done in new development projects. It’s a far simpler task to take a new project and adapt it to Windows Azure than to try and retrofit older code designed in a previous computing environment. We can still use the same coding languages (.NET, Java, C++) to write code for Windows Azure, but we need to think about the architecture of that code on a new project so that it runs in the most efficient, cost-effective way in a Distributed Architecture. As we receive new requests from the organization for new projects, a distributed architecture paradigm belongs in the decision matrix for the platform target. Implementation: When you are designing new applications for Windows Azure (or any distributed architecture) there are many important details to consider. But at the risk of over-simplification, there are three main concepts to learn and architect within the new code: Stateless Programming - Stateless program is a prime concept within distributed architectures. Rather than each server owning the complete processing cycle, the information from an operation that needs to be retained (the “state”) should be persisted to another location c(like storage) common to all machines involved in the process.  An interesting learning process for Stateless Programming (although not unique to this language type) is to learn Functional Programming. Server-Side Processing - Along with developing using a Stateless Design, the closer you can locate the code processing to the data, the less expensive and faster the code will run. When you control the network layer, this is less important, since you can send vast amounts of data between the server and client, allowing the client to perform processing. In a distributed architecture, you don’t always own the network, so it’s performance is unpredictable. Also, you may not be able to control the platform the user is on (such as a smartphone, PC or tablet), so it’s imperative to deliver only results and graphical elements where possible.  Token-Based Authentication - Also called “Claims-Based Authorization”, this code practice means instead of allowing a user to log on once and then running code in that context, a more granular level of security is used. A “token” or “claim”, often represented as a Certificate, is sent along for a series or even one request. In other words, every call to the code is authenticated against the token, rather than allowing a user free reign within the code call. While this is more work initially, it can bring a greater level of security, and it is far more resilient to disconnections. Resources: See the references of “Nondistributed Deployment” and “Distributed Deployment” at the top of this article for more information with graphics:  http://msdn.microsoft.com/en-us/library/ee658120.aspx  Stack Overflow has a good thread on functional programming: http://stackoverflow.com/questions/844536/advantages-of-stateless-programming  Another good discussion on Stack Overflow on server-side processing is here: http://stackoverflow.com/questions/3064018/client-side-or-server-side-processing Claims Based Authorization is described here: http://msdn.microsoft.com/en-us/magazine/ee335707.aspx

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  • symlink for dbus headers

    - by DarenW
    Source code for something that won't compile has the line #include but in real life that header file is in /usr/include/dbus-1.0/ Similarsituation exists for the dbus-c++ package. Why doesn't Ubuntu provide a symlink /usr/include/dbus pointing to the dbus-1.0 directory? Is this an bug in the dbus package? If intended, what it the purpose? Is it a proper fix to add a symlink myself? (Changing the source is not practical - there are many files, and they need to match what other people have.) update: ok, I totally misunderstood the situation, though it still comes down to a problem I think should be solved by a symlink. The dbus directory referred to in the #include statement is a deeper level directory under /usr/include/dbus-1.0/. The real problem is that the file dbus-arch-deps.h appears to be missing, but is actually stored in the weird location /usr/lib/x86_64-linux-gnu/dbus-1.0/include/dbus/ so now - why doesn't ubuntu provide a symlink to this in /usr/include/dbus-1.0/dbus, or actually store it there?

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  • Keeping multiple root directories in a single partition

    - by intuited
    I'm working out a partition scheme for a new install. I'd like to keep the root filesystem fairly small and static, so that I can use LVM snapshots to do backups without having to allocate a ton of space for the snapshot. However, I'd also like to keep the number of total partitions small. Even with LVM, there's inevitably some wasted space and it's still annoying and vaguely dangerous to allocate more. So there seem to be a couple of different options: Have the partition that will contain bulky, variable files, like /srv, /var, and /home, be the root partition, and arrange for the core system state — /etc, /usr, /lib, etc. — to live in a second partition. These files can (I think) be backed up using a different backup scheme, and I don't think LVM snapshots will be necessary for them. The opposite: putting the big variable directories on the second partition, and having the essential system directories live on the root FS. Either of these options require that certain directories be pointers of some variety to subdirectories of a second partition. I'm aware of two different ways to do this: symlinks and bind-mounts. Is one better than the other for this purpose? Is there another option? Do any of the various Ubuntu installation media/strategies support this style of partition layout?

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  • Weird routing issue (updated)

    - by smccloud
    I just updated the route tables due to a mistake on my part. I am working on getting networking working correctly on a cluster of 14 virtual servers at a customer site. 11 of them work fine for routing and 3 don't work correctly for their administrative network (172.28.56.0). All are running Windows Web Server 2008R2. Default gateway is set on the production network (172.28.58.0) and not on the administrative network (handled with persistent static routes). On a working server, route print gives me the following (MACs redacted) =========================================================================== Interface List 11...XX XX XX XX XX XX ......Intel(R) PRO/1000 MT Network Connection 13...XX XX XX XX XX XX00 0c 29 85 b2 98 ......Intel(R) PRO/1000 MT Network Connection #2 1...........................Software Loopback Interface 1 12...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter 14...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2 15...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 172.28.58.1 172.28.58.11 266 10.18.1.22 255.255.255.255 172.28.58.1 172.28.58.11 11 10.32.0.0 255.255.0.0 172.28.56.1 172.28.56.201 11 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 172.28.34.0 255.255.255.0 172.28.56.1 172.28.56.201 11 172.28.42.0 255.255.255.0 172.28.56.1 172.28.56.201 11 172.28.56.0 255.255.255.0 On-link 172.28.56.201 266 172.28.56.0 255.255.255.0 172.28.56.1 172.28.56.201 11 172.28.56.201 255.255.255.255 On-link 172.28.56.201 266 172.28.56.255 255.255.255.255 On-link 172.28.56.201 266 172.28.58.0 255.255.255.224 On-link 172.28.58.11 266 172.28.58.0 255.255.255.224 172.28.58.1 172.28.58.11 11 172.28.58.1 255.255.255.255 172.28.58.1 172.28.58.11 11 172.28.58.11 255.255.255.255 On-link 172.28.58.11 266 172.28.58.31 255.255.255.255 On-link 172.28.58.11 266 172.28.60.0 255.255.255.0 172.28.56.1 172.28.56.201 11 172.28.63.0 255.255.255.0 172.28.56.1 172.28.56.201 11 192.168.0.0 255.255.0.0 172.28.56.1 172.28.56.201 11 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 172.28.56.201 266 224.0.0.0 240.0.0.0 On-link 172.28.58.11 266 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 172.28.56.201 266 255.255.255.255 255.255.255.255 On-link 172.28.58.11 266 =========================================================================== Persistent Routes: Network Address Netmask Gateway Address Metric 172.28.56.0 255.255.255.0 172.28.56.1 1 172.28.63.0 255.255.255.0 172.28.56.1 1 192.168.0.0 255.255.0.0 172.28.56.1 1 172.28.60.0 255.255.255.0 172.28.56.1 1 10.32.0.0 255.255.0.0 172.28.56.1 1 172.28.34.0 255.255.255.0 172.28.56.1 1 172.28.42.0 255.255.255.0 172.28.56.1 1 0.0.0.0 0.0.0.0 172.28.58.1 Default =========================================================================== IPv6 Route Table =========================================================================== Active Routes: If Metric Network Destination Gateway 1 306 ::1/128 On-link 1 306 ff00::/8 On-link =========================================================================== Persistent Routes: None On one of the non-working server, route print gives me the following (MACs redacted) =========================================================================== Interface List 11...XX XX XX XX XX XX ......Intel(R) PRO/1000 MT Network Connection 13...XX XX XX XX XX XX ......Intel(R) PRO/1000 MT Network Connection #2 1...........................Software Loopback Interface 1 12...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter 14...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2 16...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 172.28.58.1 172.28.58.21 266 10.32.0.0 255.255.0.0 172.28.56.1 172.28.56.211 11 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 172.28.34.0 255.255.255.0 172.28.56.1 172.28.56.211 11 172.28.42.0 255.255.255.0 172.28.56.1 172.28.56.211 11 172.28.56.0 255.255.255.0 172.28.56.1 172.28.56.211 11 172.28.56.211 255.255.255.255 On-link 172.28.56.211 266 172.28.58.0 255.255.255.0 172.28.58.1 172.28.58.21 11 172.28.58.0 255.255.255.224 On-link 172.28.58.21 266 172.28.58.21 255.255.255.255 On-link 172.28.58.21 266 172.28.58.31 255.255.255.255 On-link 172.28.58.21 266 172.28.60.0 255.255.255.0 172.28.56.1 172.28.56.211 11 172.28.63.0 255.255.255.0 172.28.56.1 172.28.56.211 11 192.168.0.0 255.255.0.0 172.28.56.1 172.28.56.211 11 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 172.28.56.211 266 224.0.0.0 240.0.0.0 On-link 172.28.58.21 266 255.255.255.255 255.255.255.255 On-link 127.0.0.1 06 255.255.255.255 255.255.255.255 On-link 172.28.56.211 266 255.255.255.255 255.255.255.255 On-link 172.28.58.21 266 =========================================================================== Persistent Routes: Network Address Netmask Gateway Address Metric 172.28.56.0 255.255.255.0 172.28.56.1 1 172.28.60.0 255.255.255.0 172.28.56.1 1 172.28.63.0 255.255.255.0 172.28.56.1 1 172.28.34.0 255.255.255.0 172.28.56.1 1 172.28.42.0 255.255.255.0 172.28.56.1 1 192.168.0.0 255.255.0.0 172.28.56.1 1 10.32.0.0 255.255.0.0 172.28.56.1 1 0.0.0.0 0.0.0.0 172.28.58.1 Default 172.28.58.0 255.255.255.0 172.28.58.1 1 =========================================================================== IPv6 Route Table =========================================================================== Active Routes: If Metric Network Destination Gateway 1 306 ::1/128 On-link 1 306 ff00::/8 On-link =========================================================================== Persistent Routes: None I am at a complete loss why the non-working servers have no On-link route for 172.28.56.0. Does anyone have any suggestions on what I should be looking at to figure this out? Also, I do have "physical" access to the console if needed through vSphere Client.

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  • Data-tier Applications in SQL Server 2008 R2

    - by BuckWoody
    I had the privilege of presenting to the Adelaide SQL Server User Group in Australia last evening, and I covered the Data Access Component (DAC) and the Utility Control Point (UCP) from SQL Server 2008 R2. Here are some links from that presentation:   Whitepaper: http://msdn.microsoft.com/en-us/library/ff381683.aspx Tutorials: http://msdn.microsoft.com/en-us/library/ee210554(SQL.105).aspx From Visual Studio: http://msdn.microsoft.com/en-us/library/dd193245(VS.100).aspx Restrictions and capabilities by Edition: http://msdn.microsoft.com/en-us/library/cc645993(SQL.105).aspx    Glen Berry's Blog entry on scripts for UCP/DAC: http://www.sqlservercentral.com/blogs/glennberry/archive/2010/05/19/sql-server-utility-script-from-24-hours-of-pass.aspx    Objects supported by a DAC: http://msdn.microsoft.com/en-us/library/ee210549(SQL.105).aspx   Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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  • Symlink are using both locations?

    - by Tiago Rossi
    Ive made a research and didnt found any answers, so I decided to ask here. To make you know, the /dev/sda2 disk of my WHM/Cpanel webserver got 100% full. The /var/ folder are the /dev/sda2 and I've found the reason of that isse are the /var/lib/mysql folder. To fix it I need to move the /var/lib/mysql folder from /dev/sda2 to /home/ where I have a lot of space in disk. Then I used the command lines: service mysql stop cp -r -p /var/lib/mysql/ /home/databasesmysql/ mv /var/lib/mysql /var/lib/mysql.backup/ ln -s /home/databasesmysql/ /var/lib/mysql service mysql start Ok, now to check if its running at the new location I just renamed the /var/lib/mysql to /var/lib/mysql.backup and MySQL stopped working. Also when I rename the /home/databasesmysql/ folder MySQL also stop to work. I dont know whats happening, the symlink are using both locations? Thanks very much.

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  • Creating symlink for Postgres

    - by Edwin
    As a developer, I often ssh right into my local database, just to test my application before pushing my code. However, I find that every time I want to access Postgres, I have to type in postgres@ubuntu:~$ /usr/local/pgsql/bin/psql test whereas on my work machine, all I have to do is type postgres@ubuntu:~$ psql --dbname=test --username=user I tried creating a symlink, which was successful, but whenever I try connecting to it through this shortcut, I get the following error message: psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"? How do I get this to work? In case it makes any difference, I'm using a self-compiled version of the 9.1.x series.

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  • How to maintain symlinks in linux file manager?

    - by MountainX
    I want to use symlinks extensively. However, if I move the target file, the symlink becomes broken (unlike on Windows). That's not acceptable to me, so I either need a solution or I won't be able to use symlinks the way I wish to. Is there a solution that will work with Dolphin file manager? A command line solution is described on commandlinefu. In summary, it is something like one of these: lmv(){for a in ${@:1:$(expr $#-1)};do [ -e "$a" -a -e "${@:$#:1}" ] && mv "$a";"${@:$#:1}" && ln -s "${@:$#:1}"/"$(basename "$a")";"$(dirname "$a")";done} lmv(){for a in ${@:1:$(expr $#-1)};do [ -e "$a" -a -e "${@:$#}" ] && mv "$a";"${@:$#}" && ln -s "${@:$#}"/"$(basename "$a")";"$(dirname "$a")";done} But about half the time I'm using a file manager (Dolphin), so I need a complete solution to this problem. Is a solution available for a GUI file manager? EDIT: The context of this question is that I'm searching for an alternative to hardlinks. I previously asked this question about the pitfalls of hardlinks.

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  • Data-tier Applications in SQL Server 2008 R2

    - by BuckWoody
    I had the privilege of presenting to the Adelaide SQL Server User Group in Australia last evening, and I covered the Data Access Component (DAC) and the Utility Control Point (UCP) from SQL Server 2008 R2. Here are some links from that presentation:   Whitepaper: http://msdn.microsoft.com/en-us/library/ff381683.aspx Tutorials: http://msdn.microsoft.com/en-us/library/ee210554(SQL.105).aspx From Visual Studio: http://msdn.microsoft.com/en-us/library/dd193245(VS.100).aspx Restrictions and capabilities by Edition: http://msdn.microsoft.com/en-us/library/cc645993(SQL.105).aspx    Glen Berry's Blog entry on scripts for UCP/DAC: http://www.sqlservercentral.com/blogs/glennberry/archive/2010/05/19/sql-server-utility-script-from-24-hours-of-pass.aspx    Objects supported by a DAC: http://msdn.microsoft.com/en-us/library/ee210549(SQL.105).aspx   Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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