For help on a specific openstack messaging ping command, enter:
$ openstack messaging ping COMMAND -h/--help
The one command:
messaging ping
usage: openstack messaging ping [-h] [-f {json,shell,table,value,yaml}]
[-c COLUMN] [--max-width <integer>]
[--noindent] [--prefix PREFIX]
Check if Zaqar server is alive or not.
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