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doc/man/8/ceph-conf: make not about ceph-conf's lack of mon config support

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Steer people toward the mon explicitly or the --show-config-value option.

Signed-off-by: Sage Weil <sage@redhat.com>
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Sage Weil 2018-01-10 10:54:46 -06:00
parent 59474cb4e6
commit 47073dc19d
1 changed files with 14 additions and 1 deletions
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15
doc/man/8/ceph-conf.rst
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@ -20,10 +20,23 @@ Synopsis
Description
===========
**ceph-conf** is a utility for getting information about a ceph
**ceph-conf** is a utility for getting information from a ceph
configuration file. As with most Ceph programs, you can specify which
Ceph configuration file to use with the ``-c`` flag.
Note that unlike other ceph tools, **ceph-conf** will *only* read from
config files (or return compiled-in default values)--it will *not*
fetch config values from the monitor cluster. For this reason it is
recommended that **ceph-conf** only be used in legacy environments
that are strictly config-file based. New deployments and tools should
instead rely on either querying the monitor explicitly for
configuration (e.g., ``ceph config get <daemon> <option>``) or use
daemons themselves to fetch effective config options (e.g.,
``ceph-osd -i 123 --show-config-value osd_data``). The latter option
has the advantages of drawing from compiled-in defaults (which
occasionally vary between daemons), config files, and the monitor's
config database, providing the exact value that that daemon would be
using if it were started.
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