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30 lines
1.9 KiB
Markdown
30 lines
1.9 KiB
Markdown
# Enabling metrics and graphs for Postgres (optional)
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Expanding on the metrics exposed by the [synapse exporter and the node exporter](configuring-playbook-prometheus-grafana.md), the playbook enables the [postgres exporter](https://github.com/prometheus-community/postgres_exporter) that exposes more detailed information about what's happening on your postgres database.
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## Adjusting the playbook configuration
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To enable the postgres exporter, add the following configuration to your `inventory/host_vars/matrix.example.com/vars.yml` file:
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```yaml
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prometheus_postgres_exporter_enabled: true
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```
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## Installing
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After configuring the playbook, run the [installation](installing.md) command: `just install-all` or `just setup-all`
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## What does it do?
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Name | Description
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-----|----------
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`prometheus_postgres_exporter_enabled`|Enable the postgres prometheus exporter. This sets up the docker container, connects it to the database and adds a 'job' to the prometheus config which tells prometheus about this new exporter. The default is 'false'
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`prometheus_postgres_exporter_database_username`| The 'username' for the user that the exporter uses to connect to the database. The default is 'matrix_prometheus_postgres_exporter'
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`prometheus_postgres_exporter_database_password`| The 'password' for the user that the exporter uses to connect to the database. By default, this is auto-generated by the playbook
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`prometheus_postgres_exporter_container_labels_traefik_enabled`|If set to `true`, exposes the Postgres exporter metrics on `https://matrix.example.com/metrics/postgres-exporter` for usage with an [external Prometheus server](configuring-playbook-prometheus-grafana.md#collecting-metrics-to-an-external-prometheus-server). To password-protect the metrics, see `matrix_metrics_exposure_http_basic_auth_users` on that other documentation page.
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## More information
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- [The PostgresSQL dashboard](https://grafana.com/grafana/dashboards/9628) (generic postgres dashboard)
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