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30 lines
1.6 KiB
Markdown
30 lines
1.6 KiB
Markdown
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# 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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You can enable this with the following settings in your configuration file (`inventory/host_vars/matrix.<your-domain>/vars.yml`):
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```yaml
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matrix_prometheus_postgres_exporter_enabled: true
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# the role creates a postgres user as credential. You can configure these if required:
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matrix_prometheus_postgres_exporter_database_username: 'matrix_prometheus_postgres_exporter'
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matrix_prometheus_postgres_exporter_database_password: 'some-password'
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```
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## What does it do?
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Name | Description
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-----|----------
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`matrix_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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`matrix_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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`matrix_prometheus_postgres_exporter_database_password`| The 'password' for the user that the exporter uses to connect to the database.
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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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