Random parameters but keeping idempotent

[iprok]

Hello!

I want to add back up task of my databases to cron. I don't want them to start at the same time. And I have too much hosts to initialize each of them using variables. But if I use random filter it becomes unidempotent. Is it any way how to do what I want keeping idempotency?

Thank you.

[Dick Davies]

How about hashing their hostnames, or using something else unique but constant
about them (last octet of their IP, maybe)?

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[Brian Coca]

I've used the random filter to conditionally create either host_vars
with the value (if file exists it doesn't regenerate), optionally you
could create a file on the target in /etc/ansible/facts.d/

Another option would be to create something similar to the password
lookup, a db backed random lookup.

--
Brian Coca

[iprok]

понедельник, 15 декабря 2014 г., 17:23:30 UTC+3 пользователь Brian Coca написал:

I've used the random filter to conditionally create either host_vars
with the value (if file exists it doesn't regenerate)

Sounds interesting. How have you done this?

[Brian Coca]

example (i prefer template but this makes it a 1 liner):

- copy: content="[defaults]\ntime={{60|random}}"
dest=/etc/facts.d/mycronscript.facts
when: ansible_local is not defined or 'mycronscript' in
ansible_local or 'time' not in ansible_local.mycronscripts



--
Brian Coca