This sounds all very much like pushing a round peg into a square hole.
I would focus on fine tuning some systemd unit files and their
dependencies, instead of the carpet stopping/starting approach.


On Thu, 21 May 2020 at 14:46, Shifa Shaikh <shifa...@gmail.com> wrote:

> @Stefan Our service involves a set of processes thus, the start script
> invokes those several processes and hence the need to count the number of
> processes using `wc -l` to determine if the service (not the process) is
> running or not.
>
>
> On Thursday, May 21, 2020 at 8:18:56 AM UTC+5:30, Shifa Shaikh wrote:
>>
>> My requirement is to run the script stop-all as many times (5 retries)
>> until the output of ps -fu user1 |wc -l becomes less than 2.
>>
>> I wrote the below ansible playbook for the same:
>>
>> cat stop.yml
>>
>>   - hosts: dest_nodes
>>     tasks:
>>       - name: Start service
>>         include_tasks: "{{ playbook-dir }}/inner.yml"
>>         retries: 5
>>         delay: 4
>>         until: stopprocesscount.stdout is version('2', '<')
>>
>> cat inner.yml
>>
>> - name: Start service
>>   shell: ~/stop-all
>>   register: stopprocess
>>
>>
>> - name: Start service
>>   shell: ps -fu user1 |wc -l
>>   register: stopprocesscount
>>
>>
>> However, I get the below error running the playbook.
>>
>> ERROR! 'retries' is not a valid attribute for a TaskInclude
>>
>>
>> The error appears to be in '/app/playbook/stop.yml': line 19, column 9,
>> but may
>> be elsewhere in the file depending on the exact syntax problem.
>>
>>
>> The offending line appears to be:
>>
>>
>> - name: Start service
>>   ^ here
>>
>> Can you please suggest?
>>
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