ahh, here's a better hack :)
retry 2 times with random list entries:
- include: inner_loop_tasks.yml loop: "{{ (moons | shuffle)[:2] }}"
On Friday, 16 November 2018 14:26:14 UTC+1, Doug Bridgens wrote:
>
> Hi,
>
> I am trying to create new environments, each with a distinct name.
> Multiple people can run the playbook to create an environment, so I have to
> avoid conflicts. I have a list of ~200 moon names, and I am trying to grab
> an AWS DNS record (which I'm assuming is effectively atomic-ish). If I
> can get a DNS record, then I assume that the name is mine and continue to
> use it to name the rest of my environment resources.
>
> I tried both random_choice and the random filter, but it seems that when
> using 'retries' on a task the exact same task object is retried. I had
> this might re-exec the task and pick out a new random choice. But I guess
> the intention behind 'retries' is for when a resource (say an EC2 instance)
> isn't available yet?
>
> What I am expecting is that I can get a new random choice on each retry.
> What actually happens is that the same initial random choice is retried,
> which makes this task either work first time or fail after five retries.
>
> - name: Reserve DNS cname to avoid race conditions, fail early!
> route53:
> state: present
> zone: "{{ mydomain }}"
> record: "{{ item }}.{{ mydomain }}"
> type: CNAME
> ttl: 7200
> value: 1.1.1.1
> wait: no
> overwrite: no
> register: result
> with_random_choice: "{{ moons }}"
> retries: 5
> until: result.changed == true
>
> (gist: https://gist.github.com/thisdougb/5e88e7a62b7a9f99620cb0a323ccbda5)
>
> Am I correct in thinking that the task is not going to be re-evaluated in
> the retry mechanism? I don't think this is a bug, but maybe the
> documentation could be clearer about the implementation. I could raise an
> issue/doc-fix for that?
>
> Any alternative ways to achieve this ?
>
> cheers,
> Doug
>
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