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Displaying posts with tag: buildbot (reset)

Overview and archeological exploration of the MepSQL Bakery
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This is the final part in a series of posts about the MepSQL build system known as MepSQL Bakery. MepSQL is a (yet another) fork of the MySQL database server, with the server based on the MySQLatFacebook code and the build system based on the MariaDB build system.

In this final post I wish to draw a high level picture of the complete process of building TAR, DEB and (eventually) RPM packages from the source code. There's not much more technical details to add to the previous posts, instead I'm going to make some, shall we say "archeological", observations which imho are interesting given how the build system has evolved when being passed from one project to another. Perhaps

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Going from MariaDB to MepSQL BuildBot setup and using EC2LatentBuildSlave to save money
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This is the third post in a series about developing the MepSQL build system. In the previous posts we chose BuildBot running in the Amazon EC2 cloud. In this post we actually get a closer look at how the packages are being built (to be followed by even closer looks in later posts :-)

One of the things missing when you fork MySQL is the build system. (The other main missing component being the manual.) It is possible for anyone to compile MySQL from source, but the actual build system (scripts, testing, etc) used by MySQL itself is not public. The same is true for the automated testing. MariaDB uses the open source

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RunVM, a tool for automated scripting inside virtual machines
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In the Autumn, I wrote about some experiments I did using KVM and virtual machines to build and test MariaDB binary packages on a number of different platforms. In the period since then I added some polish and refinements, and the system is now running well for some time. We build and test packages for Debian (4 and 5), Ubuntu (8.04 to 10.04), Centos 5, and generic Linux; amd64 and i386 architectures.

To better control the startup and shutdown of the virtual machines, I created a small wrapper script around KVM called runvm. This wrapper encapsulates the steps needed to boot up a virtual machine, run a series of commands inside it, and shut it down gracefully afterwards. Some special care is taken in the script to ensure that

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