# Ansible Playbook and Supervisorctl Restart Twice Problem A possible scenario might be: 1. Update supervisor config 2. Update app config 3. If the config is changed, then restart app by using ansible-supervisor The script of ansible playbook might be: ```yaml - name: Upload app config copy: src: #... dest: #... register: app_conf - name: Upload supervisor config become: true copy: src: #... dest: #... register: supervisor_conf - name: Restart app supervisorctl: name: app state: restarted when: app_conf.changed or supervisor_conf.changed ``` ## Problem It looks great and awesome, but the problem is that if supervisorctl's config is updated, then the app will be restarted **TWICE** in a short time! Why? According to ansible's document, behavior of `state: restarted` will be: > When state = restarted, the module will call `supervisorctl update` then call `supervisorctl restart`. -- [Ansible Doc](https://docs.ansible.com/ansible/2.9/modules/supervisorctl_module.html) And the behavior of `supervisorctl update` is： > Reload config and add/remove as necessary, and will restart affected programs -- [Supervisord Doc](http://supervisord.org/running.html) ## Temp Solution? Record whether the config supervisor is changed, then call update xor restart according to tis flag: ```yaml - name: Start server by update become: true shell: supervisorctl update app when: app_conf.changed and supervisor_config.changed - name: Start server by restart become: true shell: supervisorctl restart app when: app_conf.changed and not supervisor_config.changed ``` ## Reference * [Ansible: supervisorctl – Manage the state of a program or group of programs running via supervisord](https://docs.ansible.com/ansible/2.9/modules/supervisorctl_module.html) * [Supervisor: Running Supervisor](http://supervisord.org/running.html)