This wrapper for the rancher cli allows to store environment specific stack configurations in simple yaml files and deploy it automatically.

• check that current credentials point to the correct rancher url and environment
• define a list of stacks to deploy plus dynamic variables per stack
• verify that all variables used in docker-compose.yml are defined
• Command line option to force deployment, even if there are no changes (-f or --force)

deploy_rancher.py my-environment.yml

Where my-environment.yml is the configuration file with the following syntax:

rancher-url: https://rancher-server.mycompany.com
environment: my-prod-env
stacks:
  - name: app-stack
    compose: ../stacks/app
    vars:
      APP_DOMAIN: app.mycompany.com
      APP_MODE: prod

• rancher-url The URL of the destination rancher server (used to verify that the credentials are correct)
• environment The destination environment (used to verify that the credentials are correct)
• stacks A list of stacks to deploy
  • name The name of the stack
  • compose A path to a directory where a docker-compose.yml and optionally a rancher-compose.yml are located
  • vars An optional dictionary of vars that are used to substutude $VAR or ${VAR} placeholders in docker-compose.yml as well as .Values.VAR in conditionals

• Command line option to limit deployment to certain stacks and/or services
• Automatically download compose files from GIT or HTTP(S)
• (maybe) Command line option to force deployment of services if there's a new docker image version under the same tag
• Per-service batch size in config file