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Use correct variable for run_once regardless of batch example (#57077)

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Changes example to `when: inventory_hostname == ansible_play_hosts_all[0]` to really run run_once regardless of serial.
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Remon van de Kamp 2019-05-29 19:24:13 +02:00 • committed by Alicia Cozine
commit dea9644d21
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docs/docsite/rst/user_guide/playbooks_delegation.rst
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@ -273,7 +273,7 @@ As always with delegation, the action will be executed on the delegated host, bu
.. note:: .. note::
When used together with "serial", tasks marked as "run_once" will be run on one host in *each* serial batch. When used together with "serial", tasks marked as "run_once" will be run on one host in *each* serial batch.
If it's crucial that the task is run only once regardless of "serial" mode, use If it's crucial that the task is run only once regardless of "serial" mode, use
:code:`when: inventory_hostname == ansible_play_hosts[0]` construct. :code:`when: inventory_hostname == ansible_play_hosts_all[0]` construct.
.. note:: .. note::
Any conditional (i.e `when:`) will use the variables of the 'first host' to decide if the task runs or not, no other hosts will be tested. Any conditional (i.e `when:`) will use the variables of the 'first host' to decide if the task runs or not, no other hosts will be tested.