Add docker migration guide
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FloatingGhost 2 months ago
parent deba1d25f5
commit 5231d436d1

@ -58,4 +58,4 @@ services:
# volumes:
# - ./docker-resources/Caddyfile:/etc/caddy/Caddyfile
# - ./caddy-data:/data
# - ./caddy-config:/config
# - ./caddy-config:/config

@ -6,6 +6,8 @@ This guide will show you how to get akkoma working in a docker container,
if you want isolation, or if you run a distribution not supported by the OTP
releases.
If you want to migrate from or OTP to docker, check out [the migration guide](./migrating_to_docker_en.md).
### Prepare the system
* Install docker and docker-compose
@ -43,9 +45,6 @@ in our compose environment.
```bash
mkdir pgdata
# if you want to use caddy
mkdir caddy-data
mkdir caddy-config
./docker-resources/manage.sh mix deps.get
./docker-resources/manage.sh mix compile
./docker-resources/manage.sh mix pleroma.instance gen
@ -118,6 +117,8 @@ You've got two options.
This is by far the easiest option. It'll handle HTTPS and all that for you.
```bash
mkdir caddy-data
mkdir caddy-config
cp docker-resources/Caddyfile.example docker-resources/Caddyfile
```

@ -0,0 +1,158 @@
# 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](https://docs.docker.com/engine/install/)
* [Docker-compose](https://docs.docker.com/compose/install/)
* This will usually just be a repository installation and a package manager invocation.
=== "Source"
```bash
git pull
```
=== "OTP"
Clone the akkoma repository
```bash
git clone https://akkoma.dev/AkkomaGang/akkoma.git -b stable
cd akkoma
```
### Back up your old database
Change the database name as needed
```bash
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:
```yaml
akkoma:
volumes:
- .:/opt/akkoma # This should already be there
- type: bind
source: /path/to/your/uploads
target: /opt/akkoma/uploads
```
### Set up basic configuration
```bash
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"
```bash
cp /etc/akkoma/config.exs config/prod.secret.exs
```
**BOTH**
Set the following config in `config/prod.secret.exs`:
```elixir
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.
```bash
./docker-resources/build.sh
```
This will generate a container called `akkoma` which we can use
in our compose environment.
### Setting up the docker resources
```bash
# These won't exist if you're migrating from OTP
rm -rf deps
rm -rf _build
```
```bash
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.
```bash
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](./docker_en.md#reverse-proxies).
### Let's go
```bash
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](./docker_en.md) for more information on how to
update.
#### Further reading
{! installation/further_reading.include !}
{! support.include !}
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