matrix-docker-ansible-deploy/docs/configuring-playbook-synapse-auto-compressor.md
2023-03-12 09:44:43 +02:00

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# Setting up synapse_auto_compressor
The playbook can install and configure [synapse_auto_compressor](https://github.com/matrix-org/rust-synapse-compress-state/#automated-tool-synapse_auto_compressor) for you.
It's a CLI tool that automatically compresses Synapse's `state_groups` database table in the background.
See the project's [documentation](https://github.com/matrix-org/rust-synapse-compress-state/#automated-tool-synapse_auto_compressor) to learn what it does and why it might be useful to you.
## Adjusting the playbook configuration
Add the following configuration to your `inventory/host_vars/matrix.DOMAIN/vars.yml` file:
```yaml
matrix_synapse_auto_compressor_enabled: true
```
## Installing
After configuring the playbook, run the [installation](installing.md) command again:
```
ansible-playbook -i inventory/hosts setup.yml --tags=setup-all,start
```
## Usage
After installation, `synapse_auto_compressor` will run automatically every day at `00:00:00` (as defined in `matrix_synapse_auto_compressor_calendar` by default).
## Manually start the tool
For testing your setup it can be helpful to not wait until 00:00. If you want to run the tool immediately, log onto the server
and run `systemctl start matrix-synapse-auto-compressor`. Running this command will not return control to your terminal until the compression run is done, which may take a long time.
Consider using [tmux](https://en.wikipedia.org/wiki/Tmux) if your SSH connection is unstable.