akkoma/docs/docs/installation/migrating_to_docker_en.md

Migrating to a Docker Installation

If you for any reason wish to migrate a source or OTP install to a docker one, this guide is for you.

You have a few options - your major one will be whether you want to keep your reverse-proxy setup from before.

You probably should, in the first instance.

Prepare the system

• Install docker and docker-compose
  • Docker
  • Docker-compose
  • This will usually just be a repository installation and a package manager invocation.

=== "Source"

git pull

=== "OTP" Clone the akkoma repository

git clone https://akkoma.dev/AkkomaGang/akkoma.git -b stable
cd akkoma

Back up your old database

Change the database name as needed

pg_dump -d akkoma_prod --format c > akkoma_backup.sql

Getting your static files in the right place

This will vary by every installation. Copy your instance directory to instance/ in the akkoma source directory - this is where the docker container will look for it.

For most from-source installs it'll already be there.

And the same with uploads, make sure your uploads (if you have them on disk) are located at uploads/ in the akkoma source directory.

If you have them on a different disk, you will need to mount that disk into the docker-compose file, with an entry that looks like this:

akkoma:
  volumes:
  - .:/opt/akkoma # This should already be there
  - type: bind
    source: /path/to/your/uploads
    target: /opt/akkoma/uploads

Set up basic configuration

cp docker-resources/env.example .env
echo "DOCKER_USER=$(id -u):$(id -g)" >> .env

This probably won't need to be changed, it's only there to set basic environment variables for the docker-compose file.

=== "From source"

You probably won't need to change your config. Provided your config/prod.secret.exs file is still there, you're all good.

=== "OTP"

cp /etc/akkoma/config.exs config/prod.secret.exs

BOTH

Set the following config in config/prod.secret.exs:

config :pleroma, Pleroma.Web.Endpoint,
   ...,
   http: [ip: {0, 0, 0, 0}, port: 4000]

config :pleroma, Pleroma.Repo,
  ...,
  username: "akkoma",
  password: "akkoma",
  database: "akkoma",
  hostname: "db"

Building the container

The container provided is a thin wrapper around akkoma's dependencies, it does not contain the code itself. This is to allow for easy updates and debugging if required.

./docker-resources/build.sh

This will generate a container called akkoma which we can use in our compose environment.

Setting up the docker resources

# These won't exist if you're migrating from OTP
rm -rf deps
rm -rf _build

mkdir pgdata
./docker-resources/manage.sh mix deps.get
./docker-resources/manage.sh mix compile

Setting up the database

Now we can import our database to the container.

docker-compose run --rm --user akkoma -d db 
docker-compose run --rm akkoma pg_restore -v -U akkoma -j $(grep -c ^processor /proc/cpuinfo) -d akkoma -h db akkoma_backup.sql

Reverse proxies

If you're just reusing your old proxy, you may have to uncomment the line in the docker-compose file under ports. You'll find it.

Otherwise, you can use the same setup as the docker installation guide.

Let's go

docker-compose up -d

You should now be at the same point as you were before, but with a docker install.

{! installation/frontends.include !}

See the docker installation guide for more information on how to update.

Further reading

{! installation/further_reading.include !}

{! support.include !}