Failed Galera resource - unable to increase max_open_files in mysql

Issue

• Galera bundle fails on a single node, and promote action fails with 'MySQL server failed to start' error.

# pcs status
Cluster name: openstack_cluster
Stack: stack

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Full list of resources:
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 Docker container set: galera-bundle [ - ]
   galera-bundle-0      (ocf::heartbeat:galera):        Master core-0
   galera-bundle-1      (ocf::heartbeat:galera):        FAILED Master core-1 (blocked)
   galera-bundle-2      (ocf::heartbeat:galera):        Master core-2

...
Failed Actions:
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* galera_promote_0 on galera-bundle-1 'unknown error' (1): call=43, status=complete, exitreason='MySQL server failed to start (pid=664) (rc=0), please check your installation',

...

Daemon Status:
  corosync: active/enabled
  pacemaker: active/enabled
  pcsd: active/enabled