matrix-docker-ansible-deploy/docs/configuring-playbook-dendrite.md
Suguru Hirahara bc1849d7ff
Edit installing instructions (#3844)
* Replace "just run-tags install-all/setup-all,start" with "just install-all/setup-all"

Thanks to the tip by Slavi that the overhead of ensure-matrix-users-created is negligible.

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

* Edit installing instructions

- Move the anchor links to docs/just.md
- Add note about running "ensure-matrix-users-created" tags, if ansible-playbook's tags not "setup-all,ensure-matrix-users-created,start", ie. either "setup-all,start", "setup-email2matrix,start", "setup-aux-files,setup-corporal,start", or "setup-matrix-user-verification-service,start"

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

* Update descriptions about installation

- Introduce the most conservative and stable raw ansible-playbook command.
- Introduce the just commands on installing.md and maintenance-upgrading-services.md, not on quick-start.md, since it is too early for quick start guide readers who are just starting to climb learning curve to use the shortcuts.

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

* Update docs/configuring-playbook-etherpad.md: remove the note about ensure-matrix-users-created

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

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Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>
Co-authored-by: Suguru Hirahara <acioustick@noreply.codeberg.org>
2024-12-01 17:04:54 +02:00

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# Configuring Dendrite (optional)
By default, this playbook configures the [Synapse](https://github.com/element-hq/synapse) Matrix server, but you can also use [Dendrite](https://github.com/matrix-org/dendrite).
**Notes**:
- **You can't switch an existing Matrix server's implementation** (e.g. Synapse -> Dendrite). Proceed below only if you're OK with losing data or you're dealing with a server on a new domain name, which hasn't participated in the Matrix federation yet.
- **homeserver implementations other than Synapse may not be fully functional**. The playbook may also not assist you in an optimal way (like it does with Synapse). Make yourself familiar with the downsides before proceeding
## Adjusting the playbook configuration
To use Dendrite, you **generally** need to add the following configuration to your `inventory/host_vars/matrix.example.com/vars.yml` file:
```yaml
matrix_homeserver_implementation: dendrite
```
The playbook provides lots of customization variables you could use to change Dendrite's settings.
Their defaults are defined in [`roles/custom/matrix-dendrite/defaults/main.yml`](../roles/custom/matrix-dendrite/defaults/main.yml) and they ultimately end up in the generated `/matrix/dendrite/config/dendrite.yaml` file (on the server). This file is generated from the [`roles/custom/matrix-dendrite/templates/dendrite/dendrite.yaml.j2`](../roles/custom/matrix-dendrite/templates/dendrite/dendrite.yaml.j2) template.
**If there's an existing variable** which controls a setting you wish to change, you can simply define that variable in your configuration file (`inventory/host_vars/matrix.example.com/vars.yml`) and [re-run the playbook](installing.md) to apply the changes.
Alternatively, **if there is no pre-defined variable** for a Dendrite setting you wish to change:
- you can either **request a variable to be created** (or you can submit such a contribution yourself). Keep in mind that it's **probably not a good idea** to create variables for each one of Dendrite's various settings that rarely get used.
- or, you can **extend and override the default configuration** ([`dendrite.yaml.j2`](../roles/custom/matrix-dendrite/templates/dendrite/dendrite.yaml.j2)) by making use of the `matrix_dendrite_configuration_extension_yaml` variable. You can find information about this in [`roles/custom/matrix-dendrite/defaults/main.yml`](../roles/custom/matrix-dendrite/defaults/main.yml).
- or, if extending the configuration is still not powerful enough for your needs, you can **override the configuration completely** using `matrix_dendrite_configuration` (or `matrix_dendrite_configuration_yaml`). You can find information about this in [`roles/custom/matrix-dendrite/defaults/main.yml`](../roles/custom/matrix-dendrite/defaults/main.yml).
## Installing
After configuring the playbook, run it with [playbook tags](playbook-tags.md) as below:
<!-- NOTE: let this conservative command run (instead of install-all) to make it clear that failure of the command means something is clearly broken. -->
```sh
ansible-playbook -i inventory/hosts setup.yml --tags=setup-all,start
```
The shortcut commands with the [`just` program](just.md) are also available: `just install-all` or `just setup-all`
`just install-all` is useful for maintaining your setup quickly when its components remain unchanged. If you adjust your `vars.yml` to remove other components, you'd need to run `just setup-all`, or these components will still remain installed. Note these shortcuts run the `ensure-matrix-users-created` tag too.