Module: DOCKER

Deploy docker on Pigsty managed nodes: Configuration | Administration | Playbook | Dashboard | Parameter

Concept

Docker is a popular container service which provides standardize software deliver solution.

Configuration

Docker module is different from other modules, which does not require pre-configuration to install & enable.

Just run the docker.yml playbook on any Pigsty managed node.

But if you wish to add docker daemon as prometheus monitoring target, you have to specify the docker_enabled parameters on those nodes.

Administration

Using Mirrors

Consider using docker mirror registry, log in with:

docker login quay.io    # entering your username & password

Monitoring

Docker monitoring is part ot NODE module’s responsibility, to register docker target to prometheus.

You have to define docker_enabled on nodes, then re-register them with:

./node.yml -l <selector> -t register_prometheus

Compose Template

Pigsty has a series of built-in docker compose templates.

Playbook

There’s one playbook to install docker on designated node:

• docker.yml: install docker daemon.

docker.yml

The playbook docker.yml will install docker for the given node.

Subtasks of this playbook:

• docker_install : install docker on nodes
• docker_admin : add user to docker admin group
• docker_config : generate docker daemon config
• docker_launch : launch docker daemon systemd service
• docker_image : load docker images from /tmp/docker/*.tgz if exists

Parameter

There are 4 parameters about DOCKER module.