Debugging Percona Xtradb (Galera) Cluster node startup / SST errors

January 21, 2015

A Percona Xtradb (Galera) Cluster node may fail to join it due to many possible mistakes causing SST to fail. It could be a configuration item or purely setup requirement. In this article we will be troubleshooting step by step the SST issues faced.

MariaDB slave restore using GTID & xtrabackup bug

December 31, 2014

Restoring MariaDB (MySQL) slave using Xtrabackup & GTID.

xtrabackup_51: not found & no ‘mysqld’ group in MySQL options

May 27, 2013

Recently I happen to setup a new MySQL instance with my tools – a standard MySQL 5.1+, xtrabackup setup and last-hotbackup.tar.gz. To restore from the backup we used xtrabackup binaries…

Why we need a tester / QA – Software testing

March 4, 2013

“Why Testing”, “Importance of Software testing”, “Scope of testing”, “How to become a tester”, “Training for software quality assurance / software testing” … Stop there… Above are the topics well…

MySQL variable innodb_flush_method – summarized

January 10, 2013

innodb_flush_method variable specifies how InnoDB opens and flushes log and data files. In Innodb optimization, setting the variable innodb_flush_method tweaks the performance most of the times but there are cases…

Is your backup complete? – backup MySQL users privileges / grants – pt-show-grants

December 17, 2012

Everybody knows the criticality of backup. You might have had your database dumped, data directory copied, flat files exported and even config and binary log files backed-up. But did you…