June 18, 2013

Post: How to fix your PRM cluster when upgrading to RHEL/CentOS 6.4

to 6.4, upgrading your distribution to 6.4 may break your cluster. In this post I will explain you how toto 1.18. You can also follow the official documentation here. The version

Post: Implementing SchemaSpy in your MySQL environment

…sandbox: description=MySQL driver=com.mysql.jdbc.Driver connectionSpec=jdbc:mysql://127.0…impact on how SchemaSpy identifies the relationship, and whether you need to provide … I used to properly link child_A to parent table: version=”1.0″… is basically a quick sanity check of your schema for any…

Post: Is your MySQL buffer pool warm? Make it sweat!

… HTTP, by mysql_slowlogd. This daemon is similar to running `tail -f slow.log`, except that it knows how to follow the…features to Percona Playback to make it work better for this use case. You will need version 0.6 or later to…of the graph lines up with the blue part. Check back Thursday for Part 2!…

Post: MySQL 5.6 Compatible Percona Toolkit 2.2 Released

… for it. Check out the Percona Toolkit supported platforms and versions. When you upgrade to MySQL 5.6, be sure to upgrade to Percona Toolkit 2… specify –iterations or –run-time to limit how long they run. There are more changes in addition to those highlights.  For example, three…

Post: Percona XtraBackup 2.1.0 'release candidate' for MySQL available for download

…New Features: This version of Percona XtraBackup has implemented full support for new MySQL 5.6…Making the interval configurable allows to reduce the time between checks which can prevent XtraBackup…MySQL and Percona Server 5.6 with the GTID mode enabled. Example of how this information can be used to

Post: Percona XtraBackup 2.0.7 for MySQL available for download

…New Features: This version of Percona XtraBackup has implemented full support for new MySQL 5.6…Making the interval configurable allows to reduce the time between checks which can prevent XtraBackup…MySQL and Percona Server 5.6 with the GTID mode enabled. Example of how this information can be used to

Post: How to check MySQL Config files

… SET GLOBAL command to do it in run time) but either because option is misspelled or because given version does not support such option the server when would refuse to start when it restarted, either… nasty. Unlike Apache MySQL service control script does not have “configtest” option so there is no straight way to check MySQL config file for…

Comment: Where to get recent MySQL version ?

You can easily find your MySQL’s version number using any of the different methods explained in this tutorial –> http://www.geeksww.com/tutorials/database_management_systems/mysql/tips_and_tricks/how_to_check_mysql_version_number.php

Post: MongoDB Approach to Availability

… compare it to technologies in MySQL space. First I think MongoDB is best compared no to MySQL Server but MySQL Cluster, especially in newer versions which… for them to stabilize as well as later develop tools around them. How to check if 2 MongoDB nodes are indeed in sync ? How to do…

Post: Troubleshooting MySQL Upgrade Performance Regressions

… and check cardinality) Different stats can often cause different plans. Run ANALYZE TABLE on both MySQL Versions to see if you can get statistics to… changing how query is written and provide the hints. Check Query Execution If query execution plan looks the same it is good to check