April 2018
Intermediate to advanced
508 pages
15h 22m
English
Content preview from PostgreSQL 10 High Performance - Third Edition
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Nagios and PostgreSQL
There are a few projects that monitor a PostgreSQL database and output the results in a way that is compatible with Nagios. The best of these tools in terms of active development and the feature set is check_postgres available from http://bucardo.org/wiki/Check_postgres.
In addition to the usual database statistics, highlights of what you can watch using this program that aren't necessarily obvious how to monitor directly include the following:
- How close the database is to running out of transaction IDs, suggesting a vacuum problem
- Whether tables and indexes appear bloated from poor cleanup of dead rows
- If any particularly long queries or idle transactions are running
- Checking whether checkpoints are occurring regularly ...
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