pleroma/docs/installation/arch_linux_en.md

Installing on Arch Linux

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Installation

This guide will assume that you have administrative rights, either as root or a user with sudo permissions. If you want to run this guide with root, ignore the sudo at the beginning of the lines, unless it calls a user like sudo -Hu akkoma; in this case, use su <username> -s $SHELL -c 'command' instead.

Required packages

• postgresql
• elixir
• git
• base-devel
• cmake
• file

Optional packages used in this guide

• nginx (preferred, example configs for other reverse proxies can be found in the repo)
• certbot (or any other ACME client for Let’s Encrypt certificates)
• ImageMagick
• ffmpeg
• exiftool

Prepare the system

• First update the system, if not already done:

sudo pacman -Syu

• Install some of the above mentioned programs:

sudo pacman -S git base-devel elixir cmake file

Install PostgreSQL

Arch Wiki article

• Install the postgresql package:

sudo pacman -S postgresql

• Initialize the database cluster:

sudo -iu postgres initdb -D /var/lib/postgres/data

• Start and enable the postgresql.service

sudo systemctl enable --now postgresql.service

Install media / graphics packages (optional, see docs/installation/optional/media_graphics_packages.md)

sudo pacman -S ffmpeg imagemagick perl-image-exiftool

Install AkkomaBE

• Add a new system user for the Akkoma service:

sudo useradd -r -s /bin/false -m -d /var/lib/akkoma -U akkoma

Note: To execute a single command as the Akkoma system user, use sudo -Hu akkoma command. You can also switch to a shell by using sudo -Hu akkoma $SHELL. If you don’t have and want sudo 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:

sudo mkdir -p /opt/akkoma
sudo chown -R akkoma:akkoma /opt/akkoma
sudo -Hu akkoma git clone https://akkoma.dev/AkkomaGang/akkoma.git /opt/akkoma

• Change to the new directory:

cd /opt/akkoma

• Install the dependencies for Akkoma and answer with yes if it asks you to install Hex:

sudo -Hu akkoma mix deps.get

• Generate the configuration: sudo -Hu akkoma 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):

sudo -Hu 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:

sudo -Hu postgres psql -f config/setup_db.psql

• Now run the database migration:

sudo -Hu akkoma MIX_ENV=prod mix ecto.migrate

• Now you can start Akkoma already

sudo -Hu akkoma 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 a systemd service file for Akkoma.

Nginx

• Install nginx, if not already done:

sudo pacman -S nginx

• Create directories for available and enabled sites:

sudo mkdir -p /etc/nginx/sites-{available,enabled}

• Append the following line at the end of the http block in /etc/nginx/nginx.conf:

include sites-enabled/*;

• Setup your SSL cert, using your method of choice or certbot. If using certbot, first install it:

sudo pacman -S certbot certbot-nginx

and then set it up:

sudo mkdir -p /var/lib/letsencrypt/
sudo certbot certonly --email <your@emailaddress> -d <yourdomain> --standalone

If that doesn’t work, make sure, that nginx is not already running. If it still doesn’t work, try setting up nginx first (change ssl “on” to “off” and try again).

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• Copy the example nginx configuration and activate it:

sudo cp /opt/akkoma/installation/nginx/akkoma.nginx /etc/nginx/sites-available/akkoma.nginx
sudo ln -s /etc/nginx/sites-available/akkoma.nginx /etc/nginx/sites-enabled/akkoma.nginx

• Before starting nginx edit the configuration and change it to your needs (e.g. change servername, change cert paths)
• Enable and start nginx:

sudo systemctl enable --now nginx.service

If you need to renew the certificate in the future, uncomment the relevant location block in the nginx config and run:

sudo certbot certonly --email <your@emailaddress> -d <yourdomain> --webroot -w /var/lib/letsencrypt/

Other webserver/proxies

You can find example configurations for them in /opt/akkoma/installation/.

Systemd service

• Copy example service file

sudo cp /opt/akkoma/installation/akkoma.service /etc/systemd/system/akkoma.service

• Edit the service file and make sure that all paths fit your installation
• Enable and start akkoma.service:

sudo systemctl enable --now akkoma.service

Create your first user

If your instance is up and running, you can create your first user with administrative rights with the following task:

sudo -Hu akkoma MIX_ENV=prod mix pleroma.user new <username> <your@emailaddress> --admin

Further reading

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