Ansible - delay parameter

Both the pause module and delay parameter are used to create a pause or delay during task execution.

Let's say you want to retry a particular tasks a number of times, and have a delay between each attempt. In this example, you want to retry the ps command 3 times with a 3 second delay between each attempt. The retries option is often used with the delay option.

- name: ps command
  shell: "ps -ef | grep httpd"
  retries: 3
  delay: 3
  register: out
  until: oit.rc == 0

 

In this example, the return code of the ps command will be 0 (success) when there is an HTTPD process running on the managed node (e.g. target system). On the other hand, the return code will be 1 (failed) when there are no HTTPD processes running on the managed node. In this example, as long as the return code is not 0, the ps command will be retried 3 times.

Running this play should produce the following.

PLAY [all] 

TASK [ps command] 
FAILED - RETRYING: ps command (3 retries left).
FAILED - RETRYING: ps command (2 retries left).
FAILED - RETRYING: ps command (1 retries left).
fatal: [server1.example.com]: FAILED! => {"attempts": 3, "changed": true, "cmd": "ps -ef | grep httpd", "delta": "0:00:00.014413", "end": "2020-07-20 05:23:37.348236", "msg": "non-zero return code", "rc": 1, "start": "2020-07-20 05:23:37.333823", "stderr": "", "stderr_lines": [], "stdout": "", "stdout_lines": []}

PLAY RECAP 
server1.example.com : ok=1    changed=0    unreachable=0    failed=1

 



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