Buggy timezone module in Ansible

If you ever saw this:

fatal: [server]: FAILED! => {"changed": false, "msg": "Error message:\nstill not desired state, though changes have made\nOther message(s):\nAdded 1 line and deleted 1 line(s) on /etc/timezone"}

There are two options:

1. It’s a bug. Sorry. 1, 2, etc. Sorry, it it is.
2. You are using wrong the timezone name. It was a bit of mystery to debug.

I had following task:

tasks:
   - name: Set UTC timezone
     timezone: name=UTC
     become: yes
     tags:
      - time

And it caused this cryptic error: “still not desired state, though changes have made” on some servers.

After some debug I found problem: time zone name was wrong. It’s not UTC, it’s Etc/UTC.

The proper task looks like this:

tasks:
   - name: Set UTC timezone
     timezone: name=Etc/UTC
     become: yes
     tags:
      - time

After that all problems have been solved.