docker-ejabberd/ecs/README.md

ejabberd Community Server - Base

This ejabberd Docker image allows you to run a single node ejabberd instance in a Docker container.

Running ejabberd

Default configuration for domain localhost

You can run ejabberd in a new container with the following command:

docker run --name ejabberd -d -p 5222:5222 ejabberd/ecs

This command will run Docker image as a daemon, using ejabberd default configuration file and XMPP domain "localhost".

To stop the running container, you can run:

docker stop ejabberd

If needed you can restart the stopped ejabberd container with:

docker restart ejabberd

Registering an admin account

The default ejabberd configuration has already granted admin privilege to an account that would be called admin@localhost, so you just need to register such an account to start using it for administrative purposes. You can register this account using the ejabberdctl script, for example:

docker exec -it ejabberd bin/ejabberdctl register admin localhost passw0rd

Using ejabberdapi

When the container is running (and thus ejabberd), you can exec commands inside the container. To execute those commands you can use ejabberdctl or any other of the available interfaces, see https://docs.ejabberd.im/developer/ejabberd-api/#understanding-ejabberd-commands

Additionally, this Docker image includes the ejabberdapi executable. Please check the ejabberd-api homepage for configuration and usage details.

For example, if you configure ejabberd like this:

listen:
  -
    port: 5282
    module: ejabberd_http
    request_handlers:
      "/api": mod_http_api

acl:
  loopback:
    ip:
      - 127.0.0.0/8
      - ::1/128
      - ::FFFF:127.0.0.1/128

api_permissions:
  "admin access":
    who:
      access:
        allow:
          acl: loopback
    what:
      - "register"

Then you could register new accounts with this query:

docker exec -it ejabberd bin/ejabberdapi register --endpoint=http://127.0.0.1:5282/ --jid=admin@localhost --password=passw0rd

Running ejabberd with Erlang console attached

If you would like to run it with Erlang console attached you can use the live command:

docker run -it -p 5222:5222 ejabberd/ecs live

This command will use default configuration file and XMPP domain "localhost".

Running ejabberd with your config file and database host directory

The following command will pass config file using Docker volume feature and share local directory to store database:

mkdir database
docker run -d --name ejabberd -v $(pwd)/ejabberd.yml:/home/ejabberd/conf/ejabberd.yml -v $(pwd)/database:/home/ejabberd/database -p 5222:5222 ejabberd/ecs

Inspecting the container state

The container is packaging Alpine Linux. You can check the state with the command:

docker exec -it ejabberd sh

Checking ejabberd log files

You can execute a Docker command to check the content of the log files from inside to container, even if you do not put it on a shared persistent drive:

docker exec -it ejabberd tail -f logs/ejabberd.log

Open ejabberd debug console

You can open a live debug Erlang console attached to a running container:

docker exec -it ejabberd bin/ejabberdctl debug

Docker image advanced configuration

Ports

ejabberd base Docker image exposes the following port:

• 5222: This is the default XMPP port for clients.
• 5280: This is the port for admin interface, API, Websockets and XMPP BOSH.
• 5269: Optional. This is the port for XMPP federation. Only needed if you want to communicate with users on other servers.

Volumes

ejabberd produces two types of data: log files and database (Mnesia). This is the kind of data you probably want to store on a persistent or local drive (at least the database).

Here are the volume you may want to map:

• /home/ejabberd/logs/: Directory containing log files
• /home/ejabberd/database/: Directory containing Mnesia database. You should back up or export the content of the directory to persistent storage (host storage, local storage, any storage plugin)
• /home/ejabberd/conf/: Directory containing configuration and certificates
• /home/ejabberd/upload/: Directory containing uploaded files. This should also be backed up.

All these files are owned by ejabberd user inside the container. Corresponding UID:GID is 9000:9000. If you prefer bind mounts instead of docker volumes, then you need to map this to valid UID:GID on your host to get read/write access on mounted directories.

Generating ejabberd release

Configuration

Image is built by embedding an ejabberd Erlang/OTP standalone release in the image.

The configuration of ejabberd Erlang/OTP release is customized with:

• rel/config.exs: Customize ejabberd release
• rel/dev.exs: ejabberd environment configuration for development release
• rel/prod.exs: ejabberd environment configuration for production Docker release
• vars.config: ejabberd compilation configuration options
• conf/ejabberd.yml: ejabberd default config file

Build ejabberd Community Server base image from ejabberd master on Github:

docker build -t ejabberd/ecs .

Build ejabberd Community Server base image for a given ejabberd version:

./build.sh 18.03

TODO

• Rebuild last version of bin/ejabberdapi tool when creating container.