Simple Ansible role showing concept of blue-green deployments on local microinfrastructure with Docker containers
app_bluegreen- Flag to enable or disable blue-green deployments (default:True)app_check_health- Should we check application health in containers before reloading nginx or not. (default:True)app_health_check_path- URL path for health check. (default:/)app_command- Start-up command for container.app_env- Dictionary of ENV variables to be available in conainer. Used for set-up application in container. (default:{})app_etc_hosts- Dictionary of custom host:ip mappings for /etc/hosts in container. Used for unified 3rd party services endpoints accross different envs. (default:{})app_hostname- Hostname used in nginx config as server_name. (default:localhost)app_instances_count- Number of containers to be run on single host. (default:2)app_log_driver- Log driver for docker containers. (default:none)app_log_options- Dictionary with options for docker log driver. (default:{ tag: {{ app_name }} })app_name- Application name. Used for pulling containers from registry and container naming. (default:trainingwheels)app_nginx_port- Port where nginx balancer is listening to. (default:80)app_nginx_ip_hash- Enable ip-hash load-balancing algorithm for nginx. (default:False)app_port- TCP port where app is listening to. Usually it's port in EXPOSE. (default:5000)app_stop_inactive_color- Whether stop inactive instances after successful deployment or not. (default:True)app_repo- Repository in docker registry to take image from.app_version- Image version to install. (default:latest)app_volumes- Array with volumes mounted in container. Used for storing peristent data. (default:[])
For more variables see defaults/main.yml
- docker-engine (not in meta)
- nginx (not in meta)
- Ansible get a list of all published ports in containers.
- Ansible prepare a nginx config with all published container's ports of all(!) app hosts.
MIT / BSD