On Sunday, March 4, 2018 at 10:46:27 PM UTC-5, Evan wrote:
>
> I'm trying to loop through a list (file) of powervc regions, delegating a
> command to them, and if that command (find a vm) is successful (ie: the vm
> is on that region) I want to record the region name. I'm using delegate_to
> because I have other commands to run that are not on that region.
>
> ---
> - hosts: all
> gather_facts: false
> vars:
> host: host1
>
> tasks:
>
> - name: "Validate if VM exists on Region"
> shell: source /opt/ibm/powervc/powervcrc.auto && openstack --insecure
> server show {{host}} |grep -owP 'id.*\|\s\K.*[^\|]+' | awk {' print $1 '}
> register: vm_exist
> delegate_to: "{{ item }}"
> with_lines: cat regions.inv
> ignore_errors: false
>
>
> This currently works - regions.inv is a list of names (region1-pvc,
> region2-pvc etc). It loops through each entry, connects to the host and
> runs the shell command. Is it possible to capture the value of {{ item }}
> for use in other tasks if the shell command returns successfully? I've
> tried using hostvar, but the powervc node isn't internally called region1.
> It returns the hostname 'powervc' - the region1-pvc/IP name is just a DNS
> entry.
>
> Every attempt to use {{ item }} in the next task returns an "undefined"
> error. This may be a logic issue with how I'm trying to structure my
> playbooks, but it's currently the only way I can think of doing it. Any
> suggestions?
>
You should look more closely at the contents of the `vm_exist` variable. It
contains a list of results, and each result includes the value of `item`
for that iteration of the loop.
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