Update docs/configuring-playbook-prometheus-grafana.md: remove the table with one entry

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>
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Suguru Hirahara 2025-02-09 22:46:09 +09:00
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@ -17,16 +17,14 @@ When setting, replace `example.com` with your own.
## Adjusting the playbook configuration — Prometheus
Prometheus is an open-source systems monitoring and alerting toolkit. To enable it, add the following configuration to your `inventory/host_vars/matrix.example.com/vars.yml` file:
Prometheus is an open-source systems monitoring and alerting toolkit. It is a time series database, which holds all the data we're going to talk about.
To enable it, add the following configuration to your `inventory/host_vars/matrix.example.com/vars.yml` file:
```yaml
prometheus_enabled: true
```
Name | Description
-----|----------
`prometheus_enabled`|[Prometheus](https://prometheus.io) is a time series database. It holds all the data we're going to talk about.
**Note**: the retention policy of Prometheus metrics is [15 days by default](https://prometheus.io/docs/prometheus/latest/storage/#operational-aspects). Older data gets deleted automatically.
### Enable metrics and graphs for generic system information (optional)