Container Host Cleaner

Ansible role to configure a cron job that terminates containers older than LIMIT_HOURS number of hours.

This is used with public-engineering/vpn.public.engineering to clean up terminated VPN instances.

Requirements

Must have pip3 and Docker installed on your target system-- this package will only install the Docker Python SDK.

Using

In examples/main.yml there is an example usage:

---
- hosts:
    - docker_hosts
  roles:
         - { role: container_host_cleaner, docker_remote_user: "ubuntu" }

This only requires docker_remote_user (ideally this would be the same as your Ansible user).

This role configures the container_prune.py script, and configures a cronjob to run at an hourly interval, with LIMIT_HOURS defaulting to 2.0 unless another value is provided.

This role is intended to run against the local Docker daemon, and should be installed on all nodes running Docker where you anticipate a need for this behavior, and as shown above, can be included alongside other roles (i.e. one that configures Docker, or other configuration required on those nodes).