delegate_to is a tricky one and I've come across a few pitfalls. One thing
to note is that delegate_to is meant to replace the connection vars for the
host specified, in this case I would have expected ansible_host to be
localhost in every instance.
What I would suggest is infinitely easier which is to use the
wait_for_connection task like so;
- name: wait for connection to come online
wait_for_connection:
delay: 30
timeout: 300
check_mode: False
The wait_for_connection
plugin http://docs.ansible.com/ansible/latest/wait_for_connection_module.html
was adding in Ansible 2.3 and is designed to get Ansible to continue to try
and connect to the current host and run the ping module and wait until it
succeeds. It's better than wait_for as it not only checks if the port is
online but also that Ansible can connect to the host before continuing.
Thanks
Jordan
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