The playbook can install and configure the [Draupnir](https://github.com/the-draupnir-project/Draupnir) moderation tool for you in appservice mode.
Appservice mode can be used together with the regular [Draupnir bot](configuring-playbook-bot-draupnir.md) or independently. Details about the differences between the 2 modes are described below.
## Draupnir Appservice mode compared to Draupnir bot mode
The administrative functions for managing the appservice are alpha quality and very limited. However, the experience of using an appservice-provisioned Draupnir is on par with the experience of using Draupnir from bot mode except in the case of avatar customisation as described later on in this document.
Draupnir for all is the way to go if you need more than 1 Draupnir instance, but you don't need access to Synapse Admin features as they are not accessible through Draupnir for All (Even though the commands do show up in help).
Draupnir for all in the playbook is rate-limit-exempt automatically as its appservice configuration file does not specify any rate limits.
Normal Draupnir does come with the benefit of access to Synapse Admin features. You are also able to more easily customise your normal Draupnir than D4A as D4A even on the branch with the Avatar command (To be Upstreamed to Mainline Draupnir) that command is clunky as it requires the use of things like Element Web devtools. In normal Draupnir this is a quick operation where you login to Draupnir with a normal client and set Avatar and Display name normally.
The management room has to be given an alias and be public when you are setting up the bot for the first time as the bot does not differentiate between invites and invites to the management room.
This management room is used to control who has access to your D4A deployment. The room stores this data inside of the control room state so your bot must have sufficient powerlevel to send custom state events. This is default 50 or moderator as Element clients call this powerlevel.
As noted in the Draupnir install instructions the control room is sensitive. The following is said about the control room in the Draupnir install instructions.
>Anyone in this room can control the bot so it is important that you only invite trusted users to this room. The room must be unencrypted since the playbook does not support installing Pantalaimon yet.
### 2. Give your main management room an alias.
Give the room from step 1 an alias. This alias can be anything you want and its recommended for increased security during the setup phase of the bot that you make this alias be a random string. You can give your room a secondary human readable alias when it has been locked down after setup phase.
If you made it through all the steps above and your main control room was joined by a user called `@draupnir-main:example.com` you have succesfully installed Draupnir for All and can now start using it.
The installation of Draupnir for all in this playbook is very much Alpha quality. Usage-wise, Draupnir for allis almost identical to Draupnir bot mode.
### 1. Granting Users the ability to use D4A
Draupnir for all includes several security measures like that it only allows users that are on its allow list to ask for a bot. To add a user to this list we have 2 primary options. Using the chat to tell Draupnir to do this for us or if you want to automatically do it by sending `m.policy.rule.user` events that target the subject you want to allow provisioning for with the `org.matrix.mjolnir.allow` recomendation. Using the chat is recomended.
The bot requires a powerlevel of 50 in the management room to control who is allowed to use the bot. The bot does currently not say anything if this is true or false. (This is considered a bug and is documented in issue [#297](https://github.com/the-draupnir-project/Draupnir/issues/297))
To allow users or whole homeservers you type /plain @draupnir-main:example.com allow `target` and target can be either a MXID or a wildcard like `@*:example.com` to allow all users on example.com to register. We use /plain to force the client to not attempt to mess with this command as it can break Wildcard commands especially.
Open a DM with @draupnir-main:example.com and if using an Element client send a message into this DM to finalise creating it. The bot will reject this invite and you will shortly get invited to the Draupnir control room for your newly provisioned Draupnir. From here its just a normal Draupnir experience.
You can refer to the upstream [documentation](https://github.com/the-draupnir-project/Draupnir) for more configuration documentation. Please note that the playbook ships a full copy of the example config that does transfer to provisioned Draupnirs in the production-bots.yaml.j2 file in the template directory of the role.
Please note that Config extension does not affect the appservices config as this config is not extensible in current Draupnir anyways. Config extension instead touches the config passed to the Draupnirs that your Appservice creates. So for example below makes all provisioned Draupnirs protect all joined rooms.
You can configure additional options by adding the `matrix_appservice_draupnir_for_all_extension_yaml` variable to your `inventory/host_vars/matrix.example.com/vars.yml` file.
