Ceph Nautilus : クラスターの設定 #22021/08/26 |
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分散ファイルシステム Ceph をインストールして、ストレージクラスターを構成します。
当例では 3台 のノードでクラスターを構成します。
3台 のノードにはそれぞれ空きブロックデバイスがあることが前提です。 (当例では [/dev/sdb] を使用)
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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 | | | | |
+-----------------------+ +-----------------------+ +-----------------------+
|
| [1] | |
| [2] | 管理ノードから各ノードへ OSD (Object Storage Device) の設定をします。 設定するブロックデバイス (当例では [/dev/sdb]) はフォーマットするため、保存が必要な既存データがある場合は事前にバックアップが必要です。 |
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# 各ノードに OSD の設定を実行
root@node01:~# for NODE in node01 node02 node03
do
if [ ! ${NODE} = "node01" ]
then
scp /etc/ceph/ceph.conf ${NODE}:/etc/ceph/ceph.conf
scp /etc/ceph/ceph.client.admin.keyring ${NODE}:/etc/ceph
scp /var/lib/ceph/bootstrap-osd/ceph.keyring ${NODE}:/var/lib/ceph/bootstrap-osd
fi
ssh $NODE \
"chown ceph. /etc/ceph/ceph.* /var/lib/ceph/bootstrap-osd/*; \
parted --script /dev/sdb 'mklabel gpt'; \
parted --script /dev/sdb "mkpart primary 0% 100%"; \
ceph-volume lvm create --data /dev/sdb1"
done
Running command: /usr/bin/ceph-authtool --gen-print-key Running command: /usr/bin/ceph --cluster ceph --name client.bootstrap-osd --keyring /var/lib/ceph/bootstrap-osd/ceph.keyring -i - osd new 106b9a2a-61d5-402f-8bda-de56dd735361 Running command: /usr/sbin/vgcreate --force --yes ceph-73fb83b6-392c-4aff-87d7-02797a2ecbd0 /dev/sdb1 stdout: Physical volume "/dev/sdb1" successfully created. stdout: Volume group "ceph-73fb83b6-392c-4aff-87d7-02797a2ecbd0" successfully created Running command: /usr/sbin/lvcreate --yes -l 20479 -n osd-block-106b9a2a-61d5-402f-8bda-de56dd735361 ceph-73fb83b6-392c-4aff-87d7-02797a2ecbd0 stdout: Logical volume "osd-block-106b9a2a-61d5-402f-8bda-de56dd735361" created. Running command: /usr/bin/ceph-authtool --gen-print-key Running command: /usr/bin/mount -t tmpfs tmpfs /var/lib/ceph/osd/ceph-0 --> Executable selinuxenabled not in PATH: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin Running command: /usr/bin/chown -h ceph:ceph /dev/ceph-73fb83b6-392c-4aff-87d7-02797a2ecbd0/osd-block-106b9a2a-61d5-402f-8bda-de56dd735361 Running command: /usr/bin/chown -R ceph:ceph /dev/dm-2 Running command: /usr/bin/ln -s /dev/ceph-73fb83b6-392c-4aff-87d7-02797a2ecbd0/osd-block-106b9a2a-61d5-402f-8bda-de56dd735361 /var/lib/ceph/osd/ceph-0/block Running command: /usr/bin/ceph --cluster ceph --name client.bootstrap-osd --keyring /var/lib/ceph/bootstrap-osd/ceph.keyring mon getmap -o /var/lib/ceph/osd/ceph-0/activate.monmap stderr: got monmap epoch 2 Running command: /usr/bin/ceph-authtool /var/lib/ceph/osd/ceph-0/keyring --create-keyring --name osd.0 --add-key AQC40yZhufXxEBAAhLZdL1CGFmuTLAxi9+12pQ== stdout: creating /var/lib/ceph/osd/ceph-0/keyring stdout: added entity osd.0 auth(key=AQC40yZhufXxEBAAhLZdL1CGFmuTLAxi9+12pQ==) Running command: /usr/bin/chown -R ceph:ceph /var/lib/ceph/osd/ceph-0/keyring Running command: /usr/bin/chown -R ceph:ceph /var/lib/ceph/osd/ceph-0/ Running command: /usr/bin/ceph-osd --cluster ceph --osd-objectstore bluestore --mkfs -i 0 --monmap /var/lib/ceph/osd/ceph-0/activate.monmap --keyfile - --osd-data /var/lib/ceph/osd/ceph-0/ --osd-uuid 106b9a2a-61d5-402f-8bda-de56dd735361 --setuser ceph --setgroup ceph stderr: 2021-08-26 08:35:21.932 7f2307cefc00 -1 bluestore(/var/lib/ceph/osd/ceph-0/) _read_fsid unparsable uuid --> ceph-volume lvm prepare successful for: /dev/sdb1 Running command: /usr/bin/chown -R ceph:ceph /var/lib/ceph/osd/ceph-0 Running command: /usr/bin/ceph-bluestore-tool --cluster=ceph prime-osd-dir --dev /dev/ceph-73fb83b6-392c-4aff-87d7-02797a2ecbd0/osd-block-106b9a2a-61d5-402f-8bda-de56dd735361 --path /var/lib/ceph/osd/ceph-0 --no-mon-config Running command: /usr/bin/ln -snf /dev/ceph-73fb83b6-392c-4aff-87d7-02797a2ecbd0/osd-block-106b9a2a-61d5-402f-8bda-de56dd735361 /var/lib/ceph/osd/ceph-0/block Running command: /usr/bin/chown -h ceph:ceph /var/lib/ceph/osd/ceph-0/block Running command: /usr/bin/chown -R ceph:ceph /dev/dm-2 Running command: /usr/bin/chown -R ceph:ceph /var/lib/ceph/osd/ceph-0 Running command: /usr/bin/systemctl enable ceph-volume@lvm-0-106b9a2a-61d5-402f-8bda-de56dd735361 stderr: Created symlink /etc/systemd/system/multi-user.target.wants/ceph-volume@lvm-0-106b9a2a-61d5-402f-8bda-de56dd735361.service → /lib/systemd/system/ceph-volume@.service. Running command: /usr/bin/systemctl enable --runtime ceph-osd@0 stderr: Created symlink /run/systemd/system/ceph-osd.target.wants/ceph-osd@0.service → /lib/systemd/system/ceph-osd@.service. Running command: /usr/bin/systemctl start ceph-osd@0 --> ceph-volume lvm activate successful for osd ID: 0 --> ceph-volume lvm create successful for: /dev/sdb1 ceph.conf 100% 274 134.8KB/s 00:00 ceph.client.admin.keyring 100% 151 74.3KB/s 00:00 ceph.keyring 100% 129 63.1KB/s 00:00 ..... ..... # ステータス確認 # [HEALTH_OK] であれば OK root@node01:~# ceph -s
cluster:
id: 92749530-d9af-4226-bfe0-ccc79a689a66
health: HEALTH_OK
services:
mon: 1 daemons, quorum node01 (age 5m)
mgr: node01(active, since 5m)
osd: 3 osds: 3 up (since 83s), 3 in (since 83s)
data:
pools: 0 pools, 0 pgs
objects: 0 objects, 0 B
usage: 3.0 GiB used, 237 GiB / 240 GiB avail
pgs:
# OSD ツリー確認 root@node01:~# ceph osd tree ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF -1 0.23428 root default -3 0.07809 host node01 0 hdd 0.07809 osd.0 up 1.00000 1.00000 -5 0.07809 host node02 1 hdd 0.07809 osd.1 up 1.00000 1.00000 -7 0.07809 host node03 2 hdd 0.07809 osd.2 up 1.00000 1.00000 root@node01:~# ceph df RAW STORAGE: CLASS SIZE AVAIL USED RAW USED %RAW USED hdd 240 GiB 237 GiB 5.4 MiB 3.0 GiB 1.25 TOTAL 240 GiB 237 GiB 5.4 MiB 3.0 GiB 1.25 POOLS: POOL ID PGS STORED OBJECTS USED %USED MAX AVAIL root@node01:~# ceph osd df ID CLASS WEIGHT REWEIGHT SIZE RAW USE DATA OMAP META AVAIL %USE VAR PGS STATUS 0 hdd 0.07809 1.00000 80 GiB 1.0 GiB 1.8 MiB 0 B 1 GiB 79 GiB 1.25 1.00 0 up 1 hdd 0.07809 1.00000 80 GiB 1.0 GiB 1.8 MiB 0 B 1 GiB 79 GiB 1.25 1.00 0 up 2 hdd 0.07809 1.00000 80 GiB 1.0 GiB 1.8 MiB 0 B 1 GiB 79 GiB 1.25 1.00 0 up TOTAL 240 GiB 3.0 GiB 5.2 MiB 0 B 3 GiB 237 GiB 1.25 MIN/MAX VAR: 1.00/1.00 STDDEV: 0 |
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