Module: DOCKER

Docker Daemon services, which allows you to pull-up stateless software in additional to PostgreSQL.

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

Concept

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

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.

Consider using docker mirror registry, log in with:

docker login quay.io    # entering your username & password

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

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

There are 4 parameters about DOCKER module.

Parameter	Section	Type	Level	Comment
`docker_enabled`	`DOCKER`	bool	C	enable docker on this node?
`docker_cgroups_driver`	`DOCKER`	enum	C	docker cgroup fs driver: cgroupfs,systemd
`docker_registry_mirrors`	`DOCKER`	string[]	C	docker registry mirror list
`docker_image_cache`	`DOCKER`	path	C	docker image cache dir, `/tmp/docker` by default