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+ $ ceph-conf --help
+ Ceph configuration query tool
+
+ USAGE
+ ceph-conf <flags> <action>
+
+ ACTIONS
+ -L|--list-all-sections List all sections
+ -l|--list-sections <prefix> List sections with the given prefix
+ --filter-key <key> Filter section list to only include sections
+ with given key defined.
+ --filter-key-value <key>=<val> Filter section list to only include sections
+ with given key/value pair.
+ --lookup <key> Print a configuration setting to stdout.
+ Returns 0 (success) if the configuration setting is
+ found; 1 otherwise.
+ -r|--resolve-search search for the first file that exists and
+ can be opened in the resulted comma
+ delimited search list.
+ -D|--dump-all dump all variables.
+ --show-config-value <key> Print the corresponding ceph.conf value
+ that matches the specified key. Also searches
+ global defaults.
+
+ FLAGS
+ --name name Set type.id
+ [-s <section>] Add to list of sections to search
+ [--format plain|json|json-pretty]
+ dump variables in plain text, json or pretty
+ json
+ [--pid <pid>] Override the $pid when expanding options
+
+ If there is no action given, the action will default to --lookup.
+
+ EXAMPLES
+ [$] ceph-conf --name mon.0 -c /etc/ceph/ceph.conf 'mon addr' (re)
+ Find out what the value of 'mon addr' is for monitor 0.
+
+ [$] ceph-conf -l mon (re)
+ List sections beginning with 'mon'.
+
+ RETURN CODE
+ Return code will be 0 on success; error code otherwise.
+