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Monitoring

In this chapter, we will learn how to effectively monitor PostgreSQL's server status and database performance. Primarily, we will focus on using Nagios, check_mk, check_postgres, collectd, and Graphite; all of these tools excel at system monitoring. We will cover the following recipes in this chapter:

Figuring out what to monitor
Installing and configuring Nagios
Configuring Nagios to monitor a database host
Enhancing Nagios with check_mk
Getting to know check_postgres
Installing and configuring collectd
Adding a custom PostgreSQL monitor to collectd
Installing and configuring Graphite
Adding collectd data to Graphite
Building a graph in Graphite
Customizing a Graphite graph
Creating a Graphite dashboard

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