The [postgres-exporter][0] exposes PostgreSQL server statistics to Prometheus. It connects to a specified PostgreSQL server (in this case, a server on the local machine via UNIX socket) and collects data from the `pg_stat_activity`, et al. views. It needs the `pg_monitor` role in order to be allowed to read the relevant metrics. Since we're setting up the exporter to connect via UNIX socket, it needs a dedicated OS user to match the PostgreSQL user in order to authenticate via the _peer_ method. [0]: https://github.com/prometheus-community/postgres_exporter/ |
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postgres-exporter.container.j2 |