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sample.ceph.conf
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;
; Sample ceph ceph.conf file.
;
; This file defines cluster membership, the various locations
; that Ceph stores data, and any other runtime options.
; If a 'host' is defined for a daemon, the init.d start/stop script will
; verify that it matches the hostname (or else ignore it). If it is
; not defined, it is assumed that the daemon is intended to start on
; the current host (e.g., in a setup with a startup.conf on each
; node).
; The variables $type, $id and $name are available to use in paths
; $type = The type of daemon, possible values: mon, mds and osd
; $id = The ID of the daemon, for mon.alpha, $id will be alpha
; $name = $type.$id
; For example:
; osd.0
; $type = osd
; $id = 0
; $name = osd.0
; mon.beta
; $type = mon
; $id = beta
; $name = mon.beta
; global
[global]
; enable secure authentication
auth supported = cephx
; allow ourselves to open a lot of files
max open files = 131072
; set log file
log file = /var/log/ceph/$name.log
; log_to_syslog = true ; uncomment this line to log to syslog
; set up pid files
pid file = /var/run/ceph/$name.pid
; If you want to run a IPv6 cluster, set this to true. Dual-stack isn't possible
;ms bind ipv6 = true
; monitors
; You need at least one. You need at least three if you want to
; tolerate any node failures. Always create an odd number.
[mon]
mon data = /data/$name
; If you are using for example the RADOS Gateway and want to have your newly created
; pools a higher replication level, you can set a default
;osd pool default size = 3
; You can also specify a CRUSH rule for new pools
; Wiki: http://ceph.newdream.net/wiki/Custom_data_placement_with_CRUSH
;osd pool default crush rule = 0
; Timing is critical for monitors, but if you want to allow the clocks to drift a
; bit more, you can specify the max drift.
;mon clock drift allowed = 1
; Tell the monitor to backoff from this warning for 30 seconds
;mon clock drift warn backoff = 30
; logging, for debugging monitor crashes, in order of
; their likelihood of being helpful :)
;debug ms = 1
;debug mon = 20
;debug paxos = 20
;debug auth = 20
[mon.alpha]
host = alpha
mon addr = 192.168.0.10:6789
[mon.beta]
host = beta
mon addr = 192.168.0.11:6789
[mon.gamma]
host = gamma
mon addr = 192.168.0.12:6789
; mds
; You need at least one. Define two to get a standby.
[mds]
; where the mds keeps it's secret encryption keys
keyring = /data/keyring.$name
; mds logging to debug issues.
;debug ms = 1
;debug mds = 20
[mds.alpha]
host = alpha
[mds.beta]
host = beta
; osd
; You need at least one. Two if you want data to be replicated.
; Define as many as you like.
[osd]
; This is where the osd expects its data
osd data = /data/$name
; Ideally, make the journal a separate disk or partition.
; 1-10GB should be enough; more if you have fast or many
; disks. You can use a file under the osd data dir if need be
; (e.g. /data/$name/journal), but it will be slower than a
; separate disk or partition.
; This is an example of a file-based journal.
osd journal = /data/$name/journal
osd journal size = 1000 ; journal size, in megabytes
; If you want to run the journal on a tmpfs (don't), disable DirectIO
;journal dio = false
; You can change the number of recovery operations to speed up recovery
; or slow it down if your machines can't handle it
; osd recovery max active = 3
; osd logging to debug osd issues, in order of likelihood of being
; helpful
;debug ms = 1
;debug osd = 20
;debug filestore = 20
;debug journal = 20
; ### The below options only apply if you're using mkcephfs
; ### and the devs options
; The filesystem used on the volumes
osd mkfs type = btrfs
; If you want to specify some other mount options, you can do so.
; for other filesystems use 'osd mount options $fstype'
osd mount options btrfs = rw,noatime
; The options used to format the filesystem via mkfs.$fstype
; for other filesystems use 'osd mkfs options $fstype'
; osd mkfs options btrfs =
[osd.0]
host = delta
; if 'devs' is not specified, you're responsible for
; setting up the 'osd data' dir.
devs = /dev/sdx
[osd.1]
host = epsilon
devs = /dev/sdy
[osd.2]
host = zeta
devs = /dev/sdx
[osd.3]
host = eta
devs = /dev/sdy