One very interesting feature, “Compact Backup,” is introduced in Percona XtraBackup 2.1. You can run “compact backups” with the  –compact option, which is very useful for those who have limited disk space to keep the database backup. Now let’s first understand how it works. When we are using –compact option with Innobackupex, it will omit the secondary index pages. This will make the backups more compact and this way they will take less space on disk but the downside of this is, the backup prepare process will take longer time because those secondary index pages will be recreated while preparing the backup. Here, we need to consider couple of things before implement …

Percona Server for MySQL version 5.1.69-14.7

Percona is glad to announce the release of Percona Server 5.1.69-14.7 on June 10, 2013. A drop in replacement for MySQL, downloads are available  here and from the Percona Software Repositories. Based on MySQL 5.1.69, this release will include all the bug fixes in it. All of Percona’s software is open-source and free, all the details of the release can be found in the …

Percona Server for MySQL version 5.6.11-60.3

Percona is glad to announce the first Release Candidate release of Percona Server 5.6.11-60.3 on June 3rd, 2013 (Downloads are available here and from the Percona Software Repositories).

Based on MySQL 5.6.11, including all the bug fixes in it, Percona Server 5.6.11-60.3 is the first RC release in the Percona Server 5.6 series. All of …

If you are using Percona Replication Manager (PRM) with RHEL/CentOS prior to 6.4, upgrading your distribution to 6.4 may break your cluster. In this post I will explain you how to fix your cluster in case it breaks after a distribution upgrade that implies an update of pacemaker from 1.1.7 to 1.18. You can also follow the official documentation here.

The version of Pacemaker (always considered as Technology Preview by RedHat) provided with 6.4 is 1.1.8-x which is not 100% compatible with 1.1.7-x see this report.

So if you want to upgrade, you cannot apply any rolling upgrade process. So like for Pacemaker 0.6.x to 1.0.x, you need again to update all nodes as once. As notified in …

Percona Server for MySQL version 5.5.31-30.3

Percona is glad to announce the release of Percona Server for MySQL 5.5.31-30.3 on May 24, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.5.31, including all the bug fixes in it, Percona Server 5.5.31-30.3 is now the current stable release in the 5.5 series. All of Percona‘s …

Percona is glad to announce the release of Percona XtraBackup 2.1.3 for MySQL on May 22, 2013. Downloads are available from our download site here and Percona Software Repositories.

This release fixes a high priority bug. It’s advised to upgrade your latest 2.1 version to 2.1.3 if you’re using the Percona XtraBackup with Percona XtraDB Cluster. This release is the latest stable …

Percona is glad to announce the release of Percona XtraBackup 2.1.2 for MySQL on May 18, 2013. Downloads are available from our download site here and Percona Software Repositories.

This release fixes number of high-priority bugs since version 2.1 became GA. It’s advised to upgrade your latest 2.1 version to 2.1.2. This release is the latest stable release in the 2.1 series.

Bugs Fixed:

• Using Perl’s DBD::MySQL package for server communication instead of spawning the MySQL command line client …

I talk with lot of people who are really interested in Percona XtraDB Cluster (PXC) and mostly they are interested in PXC as a high-availability solution.  But, what they tend not to think too much about is if moving from async to synchronous replication is right for their application or not.

Facts about Galera replication

There’s a lot of different facts about Galera that come into play here, and it isn’t always obvious how they will affect your database workload.  For example:

• Transaction commit takes approximately the worst packet round trip time (RTT) between any two nodes in your cluster.
• Transaction apply on slave nodes is still asynchronous from client commit (except on the original node where the transaction is committed)
• Galera prevents writing conflicts to these pending transactions …

Percona is glad to announce the release of Percona XtraBackup 2.1.0-rc1 on May 7, 2013. Downloads are available from our download site here. For this RC release, we will not be making APT and YUM repositories available, just base deb and RPM packages

This is an Release Candidate quality release and is not intended for production. If you want a high-quality, generally available release, the current stable version should be used (currently 2.0.7 in the 2.0 series at the time of writing).

New Features:

• This version of Percona XtraBackup has implemented full …

Galera/Percona XtraDB Cluster (PXC) for MySQL is a hot thing right now and some users jump right in without enough testing. Consequently, they’re more likely to either suffer failure or issues that prevent them from moving forward. If you are thinking of migrating your workload to Percona XtraDB Cluster, make sure to go through these basics.

log_slave_updates is REQUIRED

You need to have log_slave_updates enabled on the cluster node acting as async slave for replicated events from the async master to be applied to the other nodes, that is if you have more than one PXC node. This is because before Galera can create writesets for the replicated events, binlog events must be generated for the transactions first. Under …