matrix-docker-ansible-deploy/docs/configuring-playbook-bridge-mautrix-slack.md

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# Setting up Mautrix Slack (optional)
**Note**: bridging to [Slack](https://slack.com/) can also happen via the [mx-puppet-slack](configuring-playbook-bridge-mx-puppet-slack.md) and [matrix-appservice-slack](configuring-playbook-bridge-appservice-slack.md) bridges supported by the playbook.
- For using as a Bot we recommend the [Appservice Slack](configuring-playbook-bridge-appservice-slack.md), because it supports plumbing.
- For personal use with a slack account we recommend the `mautrix-slack` bridge (the one being discussed here), because it is the most fully-featured and stable of the 3 Slack bridges supported by the playbook.
The playbook can install and configure [mautrix-slack](https://github.com/mautrix/slack) for you.
See the project's [documentation](https://docs.mau.fi/bridges/go/slack/index.html) to learn what it does and why it might be useful to you.
Note that as of Oct 2022, support for multiple Matrix users using the bot is incomplete. Different users do not yet share the bridged channels. Everyone gets their own copy.
See the [features and roadmap](https://github.com/mautrix/slack/blob/main/ROADMAP.md) for more information.
## Prerequisites
For using this bridge, you would need to authenticate by **providing your username and password** (legacy) or by using a **token login**. See more information in the [docs](https://docs.mau.fi/bridges/go/slack/authentication.html).
Note that neither of these methods are officially supported by Slack. [matrix-appservice-slack](configuring-playbook-bridge-appservice-slack.md) uses a Slack bot account which is the only officially supported method for bridging a Slack channel.
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## Installing
To enable the bridge, add this to your `vars.yml` file:
```yaml
matrix_mautrix_slack_enabled: true
```
You may optionally wish to add some [Additional configuration](#additional-configuration), or to [prepare for double-puppeting](#set-up-double-puppeting) before the initial installation.
After adjusting your `vars.yml` file, re-run the playbook and restart all services: `ansible-playbook -i inventory/hosts setup.yml --tags=setup-all,start`
To make use of the bridge, see [Usage](#usage) below.
### Additional configuration
There are some additional options you may wish to configure with the bridge.
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Take a look at:
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- `roles/custom/matrix-bridge-mautrix-slack/defaults/main.yml` for some variables that you can customize via your `vars.yml` file
- `roles/custom/matrix-bridge-mautrix-slack/templates/config.yaml.j2` for the bridge's default configuration. You can override settings (even those that don't have dedicated playbook variables) using the `matrix_mautrix_slack_configuration_extension_yaml` variable
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### Set up Double Puppeting
If you'd like to use [Double Puppeting](https://docs.mau.fi/bridges/general/double-puppeting.html) (hint: you most likely do), you have 2 ways of going about it.
#### Method 1: automatically, by enabling Shared Secret Auth
The bridge will automatically perform Double Puppeting if you enable [Shared Secret Auth](configuring-playbook-shared-secret-auth.md) for this playbook.
This is the recommended way of setting up Double Puppeting, as it's easier to accomplish, works for all your users automatically, and has less of a chance of breaking in the future.
#### Method 2: manually, by asking each user to provide a working access token
**Note**: This method for enabling Double Puppeting can be configured only after you've already set up bridging (see [Usage](#usage)).
When using this method, **each user** that wishes to enable Double Puppeting needs to follow the following steps:
- retrieve a Matrix access token for yourself. Refer to the documentation on [how to do that](obtaining-access-tokens.md).
- send the access token to the bot. Example: `login-matrix MATRIX_ACCESS_TOKEN_HERE`
- make sure you don't log out the `Mautrix-Slack` device some time in the future, as that would break the Double Puppeting feature
## Usage
1. Start a chat with `@slackbot:YOUR_DOMAIN` (where `YOUR_DOMAIN` is your base domain, not the `matrix.` domain).
2. If you would like to login to Slack using a token, send the `login-token` command, otherwise, send the `login-password` command. Read [here](https://docs.mau.fi/bridges/go/slack/authentication.html) on how to retrieve your token and cookie token.
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3. The bot should respond with "Successfully logged into <email> for team <workspace>"
4. Now that you're logged in, you can send a `help` command to the bot again, to see additional commands you have access to.
5. Slack channels should automatically begin bridging if you authenticated using a token. Otherwise, you must wait to receive a message in the channel if you used password authentication.