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<!--
SPDX-FileCopyrightText: 2024 Matthew Fennell <matthew@fennell.dev>
SPDX-License-Identifier: AGPL-3.0-only
-->
# XMPP Server
This playbook is for creating an XMPP server using prosody.
I use this playbook for my own purposes; it will likely not generalise to other
deployments.
For instance, it is only tested with Debian Stable running on both the control
and managed nodes.
## Quickstart
### Managed node initial setup
Set up a server with the following things configured:
#### Box
The box needs:
* SSH access to a user that can become root without a password
* `python3` installed
#### DNS
If the JID names match the domain of the server you are deploying to, create
the following DNS records:
| Type | Host | IP Address | TTL |
| -------- | ---- | ---------- | --------- |
| A Record | @ | Static IP | Automatic |
See [Prosody's docs](https://prosody.im/doc/dns) for information on alternative
arrangements.
#### Firewall
Now, open the following firewall ports on the external firewall (the firewall
on the box itself will be taken care of by the playbook):
| Application | Protocol | Port |
| ----------- | -------- | ---- |
| SSH | TCP | 22 |
| HTTP | TCP | 80 |
| XMPP Client | TCP | 5222 |
| XMPP Server | TCP | 5269 |
### Install ansible on the control node
Install the `ansible` package via your package manager.
### Create a prod inventory file
Create an inventory file in `inventory/prod.ini` with the production hosts that
you would like to deploy to. For instance:
```ini
[xmpp_server]
fennell.dev virtual_host=chat.fennell.dev
koyo.haus virtual_host=koyo.haus
```
### Create a staging inventory file
Staging hosts can be useful to test deployment of your playbook before
deploying to production. If you have staging hosts set up, you can use the
Makefile to deploy to these first.
Create an inventory file in `inventory/staging.ini` like the following:
```ini
[xmpp_server]
staging.koyo.haus
```
### Set variables in inventory files
Now, create a directory like the following for each of the hosts you have
defined: `inventory/host_vars/staging.koyo.haus/vars.yaml`
```
inventory/
├── host_vars
│ └── staging.koyo.haus
│ └── vars.yaml
└── staging.ini
```
```yaml
certbot_email: an email address letsencrypt should use if renewal fails
virtual_host: the domain of the JID you'd like to use, e.g. koyo.haus
```
### Run the playbook on your staging hosts
```shell
make staging
```
### If all goes well, run the playbook on your prod hosts
```shell
make prod
```
## Git hooks
We provide sample git hooks in the `hooks` directory. To use these, ensure the
following packages are installed:
* ansible-lint
* gitlint
* precious
* reuse
* shellcheck
* yamllint
```shell
$ git config core.hooksPath hooks
```
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