The latest Mydumper 0.9.1 version is around for a while but we didn’t get to build packages for it. New features and bugfixes were announced in Mydumper 0.9.1 Release Note. Briefly, the new features are: Full schema support for Mydumper/Myloader Locking reduce options GTIDs and Multisource Slave Myloader single database restore Bugfixes. Good news we now build […]Continue Reading »
When we started working with a customer they asked us to setup for them more reliable and performant MySQL database. At the time they were using Percona XtraDB cluster with ELB to balance read traffic between PXC nodes. There was no writer redundancy – if a writer node was down, the app was down. The […]Continue Reading »
If you ever tried to backup MySQL 5.7 with Percona Xtrabackup that comes in percona-xtrabackup package most likely you got error message like this:
# innobackupex ./
170623 05:58:43 innobackupex: Starting the backup operation
IMPORTANT: Please check that the backup run completes successfully.
At the end of a successful backup run innobackupex
prints "completed OK!".
170623 05:58:44 version_check Connecting to MySQL server with DSN 'dbi:mysql:;mysql_read_default_group=xtrabackup' as 'dba' (using password: YES).
170623 05:58:44 version_check Connected to MySQL server
170623 05:58:44 version_check Executing a version check against the server...
170623 05:58:44 version_check Done.
170623 05:58:44 Connecting to MySQL server host: localhost, user: dba, password: set, port: not set, socket: not set
Error: Unsupported server version: '5.7.18-15'. Please report a bug at https://bugs.launchpad.net/percona-xtrabackup
This happens because percona-xtrabackup actually installs version 2.3 that doesn’t support MySQL 5.7. To take copies from MySQL 5.7 you need to use Percona XtraBackup version 2.4 and higher. Starting from […]Continue Reading »
Usually application do not connect directly to Percona XtraDB Cluster, but go through a proxy – ProxySQL, for instance. However if only one proxy node is used it becomes a single point of failure. Not long ago Marco Tusa wrote about how to configure two ProxySQL nodes in front of XtraDB cluster. If deployed on EC2 instances it […]Continue Reading »
The goal of the benchmark is to compare performance and price/performance of Amazon RDS (Aurora) and MySQL server running on EC2 instance.Continue Reading »