matrix-docker-ansible-deploy/docs/maintenance-and-troubleshooting.md
Suguru Hirahara a31400ed4a
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Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>
2024-12-02 03:14:48 +09:00

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# Maintenance and Troubleshooting
## How to see the current status of your services
You can check the status of your services by using `systemctl status`. Example:
```sh
sudo systemctl status matrix-synapse
● matrix-synapse.service - Synapse server
Loaded: loaded (/etc/systemd/system/matrix-synapse.service; enabled; vendor preset: enabled)
Active: active (running) since Sun 2024-01-14 09:13:06 UTC; 1h 31min ago
```
Docker containers that the playbook configures are supervised by [systemd](https://wiki.archlinux.org/title/Systemd) and their logs are configured to go to [systemd-journald](https://wiki.archlinux.org/title/Systemd/Journal).
To prevent double-logging, Docker logging is disabled by explicitly passing `--log-driver=none` to all containers. Due to this, you **cannot** view logs using `docker logs`.
To view systemd-journald logs using [journalctl](https://man.archlinux.org/man/journalctl.1), run a command like this:
```sh
sudo journalctl -fu matrix-synapse
```
## Increasing Synapse logging
Because the [Synapse](https://github.com/element-hq/synapse) Matrix server is originally very chatty when it comes to logging, we intentionally reduce its [logging level](https://docs.python.org/3/library/logging.html#logging-levels) from `INFO` to `WARNING`.
If you'd like to debug an issue or [report a Synapse bug](https://github.com/element-hq/synapse/issues/new/choose) to the developers, it'd be better if you temporarily increasing the logging level to `INFO`.
Example configuration (`inventory/host_vars/matrix.example.com/vars.yml`):
```yaml
matrix_synapse_log_level: "INFO"
matrix_synapse_storage_sql_log_level: "INFO"
matrix_synapse_root_log_level: "INFO"
```
Re-run the playbook after making these configuration changes.
## Remove unused Docker data
You can free some disk space from Docker, see [docker system prune](https://docs.docker.com/engine/reference/commandline/system_prune/) for more information.
```sh
ansible-playbook -i inventory/hosts setup.yml --tags=run-docker-prune
```
The shortcut command with `just` program is also available: `just run-tags run-docker-prune`
## Postgres
See the dedicated [PostgreSQL Maintenance](maintenance-postgres.md) documentation page.
## Ma1sd
See the dedicated [Adjusting ma1sd Identity Server configuration](configuring-playbook-ma1sd.md) documentation page.