Ceph Quincy : Cephadm #2 Configure Cluster2022/06/15 |
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Configure Ceph Cluster with [Cephadm] that is a Ceph Cluster Deploy tool.
For example on here, Configure Ceph Cluster with 3 Nodes like follows.
Furthermore, each Storage Node has a free block device to use on Ceph Nodes. (use [/dev/sdb] on this example)
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+----------------------------+----------------------------+
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|10.0.0.51 |10.0.0.52 |10.0.0.53
+-----------+-----------+ +-----------+-----------+ +-----------+-----------+
| [node01.srv.world] | | [node02.srv.world] | | [node03.srv.world] |
| Object Storage +----+ Object Storage +----+ Object Storage |
| Monitor Daemon | | | | |
| Manager Daemon | | | | |
+-----------------------+ +-----------------------+ +-----------------------+
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| [1] | |
| [2] | To add Nodes to Cluster, run like follows. For example, add [node02], [node03]. |
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# transfer SSH public key [root@node01 ~]# ssh-copy-id -f -i /etc/ceph/ceph.pub root@node02 Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'root@node02'" and check to make sure that only the key(s) you wanted were added.[root@node01 ~]# ssh-copy-id -f -i /etc/ceph/ceph.pub root@node03 Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'root@node03'" and check to make sure that only the key(s) you wanted were added. # add target Nodes to Cluster [root@node01 ~]# ceph orch host add node02.srv.world Inferring fsid 5bde1018-ec3b-11ec-9cfd-5254006ea317 Using recent ceph image quay.io/ceph/ceph@sha256:12a0a4f43413fd97a14a3d47a3451b2d2df50020835bb93db666209f3f77617a Added host 'node02.srv.world' with addr '10.0.0.52'[root@node01 ~]# ceph orch host add node03.srv.world Inferring fsid 5bde1018-ec3b-11ec-9cfd-5254006ea317 Using recent ceph image quay.io/ceph/ceph@sha256:12a0a4f43413fd97a14a3d47a3451b2d2df50020835bb93db666209f3f77617a Added host 'node03.srv.world' with addr '10.0.0.53'[root@node01 ~]# ceph orch host ls Inferring fsid 5bde1018-ec3b-11ec-9cfd-5254006ea317 Using recent ceph image quay.io/ceph/ceph@sha256:12a0a4f43413fd97a14a3d47a3451b2d2df50020835bb93db666209f3f77617a HOST ADDR LABELS STATUS node01.srv.world 10.0.0.51 _admin node02.srv.world 10.0.0.52 node03.srv.world 10.0.0.53 3 hosts in cluster |
| [3] | To configure OSD, run like follows. For example, configure [node01], [node02], [node03]. |
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# list available devices # possible to set if [AVAIL = True] [root@node01 ~]# ceph orch device ls Inferring fsid 5bde1018-ec3b-11ec-9cfd-5254006ea317 Using recent ceph image quay.io/ceph/ceph@sha256:12a0a4f43413fd97a14a3d47a3451b2d2df50020835bb93db666209f3f77617a HOST PATH TYPE DEVICE ID SIZE AVAILABLE REJECT REASONS node01.srv.world /dev/sdb hdd 171G Yes node02.srv.world /dev/sdb hdd 171G Yes node02.srv.world /dev/sdc hdd 171G Yes node03.srv.world /dev/sdb hdd 171G Yes # configure OSD [root@node01 ~]# ceph orch daemon add osd node01.srv.world:/dev/sdb Inferring fsid 5bde1018-ec3b-11ec-9cfd-5254006ea317 Using recent ceph image quay.io/ceph/ceph@sha256:12a0a4f43413fd97a14a3d47a3451b2d2df50020835bb93db666209f3f77617a Created osd(s) 0 on host 'node01.srv.world'[root@node01 ~]# ceph orch daemon add osd node02.srv.world:/dev/sdb Inferring fsid 5bde1018-ec3b-11ec-9cfd-5254006ea317 Using recent ceph image quay.io/ceph/ceph@sha256:12a0a4f43413fd97a14a3d47a3451b2d2df50020835bb93db666209f3f77617a Created osd(s) 1 on host 'node02.srv.world'[root@node01 ~]# ceph orch daemon add osd node03.srv.world:/dev/sdb Inferring fsid 5bde1018-ec3b-11ec-9cfd-5254006ea317 Using recent ceph image quay.io/ceph/ceph@sha256:12a0a4f43413fd97a14a3d47a3451b2d2df50020835bb93db666209f3f77617a Created osd(s) 2 on host 'node03.srv.world' # after few minutes, status turns to [HEALTH_OK] [root@node01 ~]# ceph -s
Inferring fsid 5bde1018-ec3b-11ec-9cfd-5254006ea317
Using recent ceph image quay.io/ceph/ceph@sha256:12a0a4f43413fd97a14a3d47a3451b2d2df50020835bb93db666209f3f77617a
cluster:
id: 5bde1018-ec3b-11ec-9cfd-5254006ea317
health: HEALTH_OK
services:
mon: 3 daemons, quorum node01.srv.world,node02,node03 (age 10m)
mgr: node01.srv.world.ujqdmo(active, since 22m), standbys: node02.agmuex
osd: 3 osds: 3 up (since 64s), 3 in (since 2m)
data:
pools: 1 pools, 1 pgs
objects: 2 objects, 449 KiB
usage: 61 MiB used, 480 GiB / 480 GiB avail
pgs: 1 active+clean
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| [4] | To remove OSD, run like follows. |
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[root@node01 ~]# ceph osd tree Inferring fsid 5bde1018-ec3b-11ec-9cfd-5254006ea317 Using recent ceph image quay.io/ceph/ceph@sha256:12a0a4f43413fd97a14a3d47a3451b2d2df50020835bb93db666209f3f77617a ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF -1 0.46857 root default -3 0.15619 host node01 0 hdd 0.15619 osd.0 up 1.00000 1.00000 -5 0.15619 host node02 1 hdd 0.15619 osd.1 up 1.00000 1.00000 -7 0.15619 host node03 2 hdd 0.15619 osd.2 up 1.00000 1.00000 # for example, remove OSD ID [2] [root@node01 ~]# ceph orch osd rm 2 Inferring fsid 5bde1018-ec3b-11ec-9cfd-5254006ea317 Using recent ceph image quay.io/ceph/ceph@sha256:12a0a4f43413fd97a14a3d47a3451b2d2df50020835bb93db666209f3f77617a Scheduled OSD(s) for removal # show removal status # completes if no entries are shown # takes many times [root@node01 ~]# ceph orch osd rm status Inferring fsid 5bde1018-ec3b-11ec-9cfd-5254006ea317 Using recent ceph image quay.io/ceph/ceph@sha256:12a0a4f43413fd97a14a3d47a3451b2d2df50020835bb93db666209f3f77617a OSD HOST STATE PGS REPLACE FORCE ZAP DRAIN STARTED AT 2 node03.srv.world draining 1 False False False 2022-06-15 00:05:46.148220 |
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