akkoma/docs/installation/alpine_linux_en.md

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# Installing on Alpine Linux
{! backend/installation/otp_vs_from_source_source.include !}
## Installation
This guide is a step-by-step installation guide for Alpine Linux. The instructions were verified against Alpine v3.16 standard image. You might miss additional dependencies if you use `netboot` instead.
As of Alpine Linux v3.16, `doas` is the preferred way of running privileged commands, which is what this guide will use.
If you are running an earlier version, replace `doas` with `sudo` (and use `sudo -Hu akkoma` instead of `doas -u akkoma`).
If you want to run this guide with root, ignore the `doas` at the beginning of the lines, unless it calls a user like `doas -u akkoma`; in this case, use `su -l <username> -s $SHELL -c 'command'` instead.
{! backend/installation/generic_dependencies.include !}
### Prepare the system
* The community repository must be enabled in `/etc/apk/repositories`. Depending on which version and mirror you use this looks like `https://dl-5.alpinelinux.org/alpine/v3.16/community`. If you autogenerated the mirror during installation:
```shell
awk 'NR==2' /etc/apk/repositories | sed 's/main/community/' | tee -a /etc/apk/repositories
```
* Then update the system, if not already done:
```shell
doas apk update
doas apk upgrade
```
* Install some tools, which are needed later:
```shell
doas apk add git build-base cmake file-dev
```
### Install Elixir and Erlang
* Install Erlang and Elixir:
```shell
doas apk add erlang elixir
```
* Install `erlang-eldap` if you want to enable ldap authenticator
```shell
doas apk add erlang-eldap
```
### Install PostgreSQL
* Install Postgresql server:
```shell
doas apk add postgresql postgresql-contrib
```
* Initialize database:
```shell
doas rc-service postgresql start
```
* Enable and start postgresql server:
```shell
doas rc-update add postgresql
```
### Install media / graphics packages (optional, see [`docs/installation/optional/media_graphics_packages.md`](../installation/optional/media_graphics_packages.md))
```shell
doas apk add ffmpeg imagemagick exiftool
```
### Install AkkomaBE
* Add a new system user for the Akkoma service:
```shell
doas addgroup akkoma
doas adduser -S -s /bin/false -h /opt/akkoma -H -G akkoma akkoma
```
**Note**: To execute a single command as the Akkoma system user, use `doas -u akkoma command`. You can also switch to a shell by using `doas -su akkoma`. If you dont have and want `doas` on your system, you can use `su` as root user (UID 0) for a single command by using `su -l akkoma -s $SHELL -c 'command'` and `su -l akkoma -s $SHELL` for starting a shell.
* Git clone the AkkomaBE repository and make the Akkoma user the owner of the directory:
```shell
doas mkdir -p /opt/akkoma
doas chown -R akkoma:akkoma /opt/akkoma
doas -u akkoma git clone https://akkoma.dev/AkkomaGang/akkoma.git /opt/akkoma
```
* Change to the new directory:
```shell
cd /opt/akkoma
```
* Install the dependencies for Akkoma and answer with `yes` if it asks you to install `Hex`:
```shell
doas -u akkoma mix deps.get
```
* Generate the configuration: `doas -u akkoma env MIX_ENV=prod mix pleroma.instance gen`
* Answer with `yes` if it asks you to install `rebar3`.
* This may take some time, because parts of akkoma get compiled first.
* After that it will ask you a few questions about your instance and generates a configuration file in `config/generated_config.exs`.
* Check the configuration and if all looks right, rename it, so Akkoma will load it (`prod.secret.exs` for productive instance, `dev.secret.exs` for development instances):
```shell
doas -u akkoma mv config/{generated_config.exs,prod.secret.exs}
```
* The previous command creates also the file `config/setup_db.psql`, with which you can create the database:
```shell
doas -u postgres psql -f config/setup_db.psql
```
* Now run the database migration:
```shell
doas -u akkoma env MIX_ENV=prod mix ecto.migrate
```
* Now you can start Akkoma already
```shell
doas -u akkoma env MIX_ENV=prod mix phx.server
```
### Finalize installation
If you want to open your newly installed instance to the world, you should run nginx or some other webserver/proxy in front of Akkoma and you should consider to create an OpenRC service file for Akkoma.
#### Nginx
* Install nginx, if not already done:
```shell
doas apk add nginx
```
* Setup your SSL cert, using your method of choice or certbot. If using certbot, first install it:
```shell
doas apk add certbot
```
and then set it up:
```shell
doas mkdir -p /var/lib/letsencrypt/
doas certbot certonly --email <your@emailaddress> -d <yourdomain> --standalone
```
If that doesnt work, make sure, that nginx is not already running. If it still doesnt work, try setting up nginx first (change ssl “on” to “off” and try again).
* Copy the example nginx configuration to the nginx folder
```shell
doas cp /opt/akkoma/installation/nginx/akkoma.nginx /etc/nginx/conf.d/akkoma.conf
```
* Before starting nginx edit the configuration and change it to your needs. You must change change `server_name` and the paths to the certificates. You can use `nano` (install with `apk add nano` if missing).
```
server {
server_name your.domain;
listen 80;
...
}
server {
server_name your.domain;
listen 443 ssl http2;
...
ssl_trusted_certificate /etc/letsencrypt/live/your.domain/chain.pem;
ssl_certificate /etc/letsencrypt/live/your.domain/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/your.domain/privkey.pem;
...
}
```
* Enable and start nginx:
```shell
doas rc-update add nginx
doas rc-service nginx start
```
If you need to renew the certificate in the future, uncomment the relevant location block in the nginx config and run:
```shell
doas certbot certonly --email <your@emailaddress> -d <yourdomain> --webroot -w /var/lib/letsencrypt/
```
#### OpenRC service
* Copy example service file:
```shell
doas cp /opt/akkoma/installation/init.d/akkoma /etc/init.d/akkoma
```
* Make sure to start it during the boot
```shell
doas rc-update add akkoma
```
#### Create your first user
If your instance is up and running, you can create your first user with administrative rights with the following task:
```shell
doas -u akkoma env MIX_ENV=prod mix pleroma.user new <username> <your@emailaddress> --admin
```
#### Further reading
{! backend/installation/further_reading.include !}
{! backend/support.include !}