using ansible with docker-compose - docker

Question

I am trying to deploy a docker setup using Ansible playbook. For this, I am using docker_service.
My Playbook looks like:
---
- name: Run Docker compose
hosts: all
gather_facts: no
tasks:
- debug: msg="Container - {{ inventory_hostname }}"
- docker_service:
project_src: "compose"
state: absent
- docker_service:
project_src: "compose"
state: present
Upon running this simple playbook as:
ansible-playbook -v playbook.yml --ask-sudo-pass
I added --ask-sudo-pass to ensure that it was not a permission issue.
OUTPUT
SUDO password:
PLAY [Run Docker compose] ******************************************************
TASK [debug] *******************************************************************
ok: [prolims-staging] => {
"msg": "Container - prolims-staging"
}
TASK [docker_service] **********************************************************
fatal: [prolims-staging]: FAILED! => {"changed": false, "msg": "Error connecting: Error while fetching server API version: ('Connection aborted.', error(13, 'Permission denied'))"}
to retry, use: --limit #/data/prolims-provision/provision-docker.retry
PLAY RECAP *********************************************************************
prolims-staging : ok=1 changed=0 unreachable=0 failed=1
I did try looking out for this issue on other forums as well ( and similar questions on this StackOverflow too), but those were not helpful.
Note: I am able to run docker-compose successfully in the target machine from its CLI (using sudo).
Also, I tried playing around with docker_container as well. I tried to execute a playbook with contents below:
...
- name: check container status
command: docker ps
register: result
- name: Create a container
docker_container:
name: db_pg
image: "postgres:latest"
state: present
recreate: yes
...
and running this playbook works perfectly fine.
I assume, posting my docker-compose file might not be relevant here.
I followed this example, but did not work. Maybe, I might be missing some stupid or really important thing here.
Any help on understanding and resolving this issue would be appreciated.

Answer 1

I am able to run docker-compose successfully in the target machine from its CLI (using sudo).
So you need to use become declaration for the task.
I added --ask-sudo-pass to ensure that it was not a permission issue.
Just adding --ask-sudo-pass to the ansible-playbook parameters doesn't have any effect unless the relevant tasks/plays have become declaration (and become_method is set to sudo, but this is by default).
Reference.