In this series of blogs I will do my best to demonstrate how to set up and run Cluster in Cloud environment by hand and by utilizing MCC. For detailed configuration, I will use MCC (Auto-installer). Some of the information regarding this setup is provided in post by Mikael. Information regarding Auto-installer is available in our documentation, HTML help files in share/MCC distribution directory and in my blog post.

Cloud setup It might come as surprise but for initial testing any instance should do. I started with 1CPU/1GB RAM ones. The target topology was:

• Host #1: Management node and Cluster client tools.
• Host #2: Multi-threaded DATA node. …

In this blog, we’ll look at how to manually build Percona Server for MySQL RPM packages.

Several customers and other people from the open source community have asked us how they could make their own Percona Server for MySQL RPM binaries from scratch.

This request is often made by companies that want to add custom patches to our release. To do this, you need to make some modifications to the

percona-server.spec

 file in the source tree, and some preparation is necessary.

This post covers how you can make your own RPMs from GIT or source tarball so that you can build RPMs from your own modified branch, or by applying patches. In this example, we’ll build Percona Server 5.7.16-10.

Making your own RPMs is not a recommended practice, and should rarely be …

Travis-CI is a crucial component in Continuous Integration/Continuous Deployment. We use it a lot to run unit tests and building/uploading Python modules. Recently I had to solve a problem of building RPMs on Travis-CI with Docker containers. In this post I will describe step-by-step how to do that. We distribute our backup tool as RPM packages […]

The post Building RPM on Travis-CI in Docker containers appeared first on TwinDB.

mydumper is a a tool for fast reliable logical backups. It is an alternative to mysqldump and has many advantages over mysqldump some of which are listed below:

• Multi-threaded backup tool which makes it a lot faster then mysqldump, as mysqldump is single threaded. This is especially helpful if you have very fast storage such as SSDs which can be much better utilized with multiple threads.
• The tool produces separate files for separate tables instead of one big monolithic file, making it easy to restore single tables. You can even chunk the table into multiple files which is super useful for cases where you have very large tables.
• The tool allows for multi-threaded restores, making restores an order of magnitude faster in comparison to restoring from mysqldump produced backups. This is especially true for large datasets.
• The tool provides in-built compression, so that the backup files are written in …

A bit of history

The latest version of Red Hat Enterprise Linux, one of the most popular and respected Linux distributions in the server market, was released in June 2014, followed by CentOS 7 and Oracle Linux releases in July of the same year.

There are very interesting changes for database administrators in these new releases, among which I would like to highlight the fact that installer now chooses XFS as its filesystem by default, which substitutes ext4 as the preferred format for local data storage. Red …

Madrid MySQL Users Group will have its next meeting on the 24th of April. Details can be found on the group’s Meetup page. We plan to talk about WebScaleSQL and I will give a short presentation on how to build WebScaleSQL RPMs on CentOS 6.  The meeting will be in Spanish. We’ve changed the place that … Continue reading MMUG7: Madrid MySQL Users Group meeting to take place on 24th April 2014

Looks like this post was rather unclear. See the bottom for how to build the rpms quickly.

WebScaleSQL was announced last week. This looks like a good thing for MySQL as it provides a buildable version of MySQL which includes multiple patches from Facebook, Google, LinkedIn, and Twitter needed by large users of MySQL, patches which have not been incorporated into the upstream source tree.  Making this more visible will possibly encourage more of these patches to be brought into the code sooner.

The source is provided as a git repo at https://github.com/webscalesql/webscalesql-5.6 and as detailed at http://webscalesql.org/faq.html the documentation says there is currently no intention to provide binaries. …

I was really pleased to see the announcement by Oracle MySQL yum repositories that they have now produced a yum repository from where the MySQL RPMs they provide can be downloaded. This makes keeping up to date much easier. Many companies setup internal yum repositories with the software they need as then updating servers is much easier and can be done with a simple command. For many people at home that means you set this up once and don’t need to check for updates and do manual downloads, but can do a quick yum update xxxx and you get the latest version. Great!  This new yum repository only covers RHEL6 did not include RHEL5 which is not yet end of life and still used by me and probably quite a lot of other people. I filed bug#70773 to ask for RHEL5 support to be …

A fairy tale

Once upon a time I did an operating system upgrade, a minor one that should do no harm, but just get me up to date by fixing any bugs in the version I had been using. It seemed like a good idea.

All seemed to be fine. I use a package provided by an external vendor and not the one produced by the operating system provider as this vendor provides a newer version of the package and I need that. The vendor has to make his package fit in the os environment his package is built for and normally does a pretty good job.

I use automation to build my systems and when I built a new one some issues appeared. Related to the new version of the OS the provider had enhanced one of his packages and the installation pulled in new dependencies. The install of the external package I use then broke as it conflicted with the new dependency provided by the OS.  While a workaround is possible: uninstall …

As you may expect from open source world thingy, almost every Linux distribution has developed it’s own way to manage our favourite RDBMS service. Yet none is perfect, or even some of them seems to not work in real server scenario1.

In this post I’m trying to compare and point out most annoying aspects of initialization scripts that I had to face in production.

In ‘old days’ probably all Linux distributions used to start and stop services using so called init scripts usually written in Unix shell (sh or Bash). But situation is not so simple these days anymore.

Folks started to think about improving things, like making system initialization faster by parallelization of starting services. So Upstart was developed in …