In this entry, I would like to explain how to use pt-table-usage and pt-index-usage commands in the Postgres Toolkit which I introduced in the previous entry.
If you have never heard about Postgres Toolkit, please visit the previous entry.
If you are already familiar with PostgreSQL, you may know that several system views and system tables need to be combined in order to obtain the PostgreSQL statistics and usages.
So, obtaining those information is one of the essential talks for DBA, but it is one of the complicated and bothersome tasks.
pt-table-usage and pt-index-usage are designed to allow DBA to deal with those tasks in single command.
Thursday, May 21, 2015
Tuesday, May 12, 2015
■What is "Postgres Toolkit"?Postgres Toolkit is a collection of scripts and utilities which is intended to help PostgreSQL DBA to improve quality and productivity of their daily jobs and operations.
With having Postgres Toolkit, DBA will be able to avoid from writing complicated queries and maintaining their own scripts for their daily operations and do daily DBA jobs. So, the concept of the toolkit is like "A Victorinox for PostgreSQL DBA."
I found this concept when I was sitting with our clients to help them solve PostgreSQL performance issues. At that time, I had no such tool which could help me. I had to write my own several scripts, and it meant someone needed to maintain and support them.
So, I have decided to create "a single solution" which everyone can use anytime everywhere. It is similar to Percona Toolkit for MySQL users, produced by Percona.
Postgres Toolkit 0.2 now supports PostgreSQL 9.0, 9.1, 9.2, 9.3 and 9.4, and can run on Red Hat Enterprise Linux 6 and CentOS 6. Also, it requires Python 2.6 (Python 2.6 is instaled on RHEL6/CentOS6 by default.)