| 主机名 | IP | 磁盘 | 角色 |
| ceph01 | 10.10.20.55 | ||
| ceph02 | 10.10.20.66 | ||
| chph03 | 10.10.20.77 |
systemctl stop ceph-mon@ceph01
systemctl stop ceph-mon@ceph02
systemctl stop ceph-mon@ceph03
[root@ceph02 ~]# parted /dev/sdb mklabel gpt
Information: You may need to update /etc/fstab.
[root@ceph02 ~]# parted /dev/sdb mkpart primary 1M 50%
Information: You may need to update /etc/fstab.
[root@ceph02 ~]# parted /dev/sdb mkpart primary 50% 100%
Information: You may need to update /etc/fstab.
[root@ceph02 ~]# chown ceph.ceph /dev/sdb1
[root@ceph02 ~]# chown ceph.ceph /dev/sdb2
初始化清空磁盘数据（仅ceph01操作即可）
[root@ceph01 ceph-cluster]# ceph-deploy disk zap ceph01 /dev/sd{c,d}
[root@ceph01 ceph-cluster]# ceph-deploy disk zap ceph01 /dev/sd{c,d}
[root@ceph01 ceph-cluster]# ceph-deploy disk zap ceph01 /dev/sd{c,d}
[root@ceph01 ceph-cluster]# ceph-deploy disk zap ceph03 /dev/sd{c,d}
[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf
[ceph_deploy.cli][INFO ] Invoked (2.0.1): /usr/bin/ceph-deploy disk zap ceph03 /dev/sdc /dev/sdd
[ceph_deploy.cli][INFO ] ceph-deploy options:
[ceph_deploy.cli][INFO ] username : None
[ceph_deploy.cli][INFO ] verbose : False
[ceph_deploy.cli][INFO ] debug : False
[ceph_deploy.cli][INFO ] overwrite_conf : False
[ceph_deploy.cli][INFO ] subcommand : zap
[ceph_deploy.cli][INFO ] quiet : False
[ceph_deploy.cli][INFO ] cd_conf : <ceph_deploy.conf.cephdeploy.Conf instance at 0x7f1635a2fbd8>
[ceph_deploy.cli][INFO ] cluster : ceph
[ceph_deploy.cli][INFO ] host : ceph03
[ceph_deploy.cli][INFO ] func : <function disk at 0x7f1635a7a578>
[ceph_deploy.cli][INFO ] ceph_conf : None
[ceph_deploy.cli][INFO ] default_release : False
[ceph_deploy.cli][INFO ] disk : ['/dev/sdc', '/dev/sdd']
[ceph_deploy.osd][DEBUG ] zapping /dev/sdc on ceph03
[ceph03][DEBUG ] connected to host: ceph03
[ceph03][DEBUG ] detect platform information from remote host
[ceph03][DEBUG ] detect machine type
[ceph03][DEBUG ] find the location of an executable
[ceph_deploy.osd][INFO ] Distro info: CentOS Linux 7.7.1908 Core
[ceph03][DEBUG ] zeroing last few blocks of device
[ceph03][DEBUG ] find the location of an executable
[ceph03][INFO ] Running command: /usr/sbin/ceph-volume lvm zap /dev/sdc
[ceph03][WARNIN] --> Zapping: /dev/sdc
[ceph03][WARNIN] --> --destroy was not specified, but zapping a whole device will remove the partition table
[ceph03][WARNIN] Running command: /bin/dd if=/dev/zero of=/dev/sdc bs=1M count=10 conv=fsync
[ceph03][WARNIN] stderr: 10+0 records in
[ceph03][WARNIN] 10+0 records out
[ceph03][WARNIN] stderr: 10485760 bytes (10 MB) copied, 0.0125001 s, 839 MB/s
[ceph03][WARNIN] --> Zapping successful for: <Raw Device: /dev/sdc>
[ceph_deploy.osd][DEBUG ] zapping /dev/sdd on ceph03
[ceph03][DEBUG ] connected to host: ceph03
[ceph03][DEBUG ] detect platform information from remote host
[ceph03][DEBUG ] detect machine type
[ceph03][DEBUG ] find the location of an executable
[ceph_deploy.osd][INFO ] Distro info: CentOS Linux 7.7.1908 Core
[ceph03][DEBUG ] zeroing last few blocks of device
[ceph03][DEBUG ] find the location of an executable
[ceph03][INFO ] Running command: /usr/sbin/ceph-volume lvm zap /dev/sdd
[ceph03][WARNIN] --> Zapping: /dev/sdd
[ceph03][WARNIN] --> --destroy was not specified, but zapping a whole device will remove the partition table
[ceph03][WARNIN] Running command: /bin/dd if=/dev/zero of=/dev/sdd bs=1M count=10 conv=fsync
[ceph03][WARNIN] stderr: 10+0 records in
[ceph03][WARNIN] 10+0 records out
[ceph03][WARNIN] 10485760 bytes (10 MB) copied
[ceph03][WARNIN] stderr: , 0.00957528 s, 1.1 GB/s
[ceph03][WARNIN] --> Zapping successful for: <Raw Device: /dev/sdd>
创建OSD存储空间（仅node1操作即可）
# 创建osd存储设备，vdc为集群提供存储空间，vdb1提供JOURNAL缓存
# 一个存储设备对应一个缓存设备，缓存需要SSD，不需要很大
[root@ceph01 ceph-cluster]# ceph-deploy osd create ceph01 --data /dev/sdc --journal /dev/sdb1
[root@ceph01 ceph-cluster]# ceph-deploy osd create ceph01 --data /dev/sdd --journal /dev/sdb2
[root@ceph01 ceph-cluster]# ceph-deploy osd create ceph02 --data /dev/sdc --journal /dev/sdb1
[root@ceph01 ceph-cluster]# ceph-deploy osd create ceph02 --data /dev/sdd --journal /dev/sdb2
[root@ceph01 ceph-cluster]# ceph-deploy osd create ceph03 --data /dev/sdc --journal /dev/sdb1
[root@ceph01 ceph-cluster]# ceph-deploy osd create ceph03 --data /dev/sdd --journal /dev/sdb2
验证测试，可观察到osd由0变为6了
[root@ceph01 ceph-cluster]# ceph -s
cluster:
id: fbc66f50-ced8-4ad1-93f7-2453cdbf59ba
health: HEALTH_WARN
no active mgr
services:
mon: 3 daemons, quorum ceph01,ceph02,ceph03 (age 10m)
mgr: no daemons active
osd: 6 osds: 0 up, 0 in
data:
pools: 0 pools, 0 pgs
objects: 0 objects, 0 B
usage: 0 B used, 0 B / 0 B avail
pgs:
报错，no active mgr
配置mgr
在ceph01上创建名为mgr1的mgr，三节点均可查看到
[root@ceph01 ceph-cluster]# ceph-deploy mgr create ceph01:mgr1
[root@ceph01 ceph-cluster]# ceph-deploy mgr create ceph01:mgr1
[ceph_deploy.conf][DEBUG ] found configuration file at: /root/.cephdeploy.conf
[ceph_deploy.cli][INFO ] Invoked (2.0.1): /usr/bin/ceph-deploy mgr create ceph01:mgr1
[ceph_deploy.cli][INFO ] ceph-deploy options:
[ceph_deploy.cli][INFO ] username : None
[ceph_deploy.cli][INFO ] verbose : False
[ceph_deploy.cli][INFO ] mgr : [('ceph01', 'mgr1')]
[ceph_deploy.cli][INFO ] overwrite_conf : False
[ceph_deploy.cli][INFO ] subcommand : create
[ceph_deploy.cli][INFO ] quiet : False
[ceph_deploy.cli][INFO ] cd_conf : <ceph_deploy.conf.cephdeploy.Conf instance at 0x7f2b64aedd40>
[ceph_deploy.cli][INFO ] cluster : ceph
[ceph_deploy.cli][INFO ] func : <function mgr at 0x7f2b65357cf8>
[ceph_deploy.cli][INFO ] ceph_conf : None
[ceph_deploy.cli][INFO ] default_release : False
[ceph_deploy.mgr][DEBUG ] Deploying mgr, cluster ceph hosts ceph01:mgr1
[ceph01][DEBUG ] connected to host: ceph01
[ceph01][DEBUG ] detect platform information from remote host
[ceph01][DEBUG ] detect machine type
[ceph_deploy.mgr][INFO ] Distro info: CentOS Linux 7.7.1908 Core
[ceph_deploy.mgr][DEBUG ] remote host will use systemd
[ceph_deploy.mgr][DEBUG ] deploying mgr bootstrap to ceph01
[ceph01][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf
[ceph01][WARNIN] mgr keyring does not exist yet, creating one
[ceph01][DEBUG ] create a keyring file
[ceph01][DEBUG ] create path recursively if it doesn't exist
[ceph01][INFO ] Running command: ceph --cluster ceph --name client.bootstrap-mgr --keyring /var/lib/ceph/bootstrap-mgr/ceph.keyring auth get-or-create mgr.mgr1 mon allow profile mgr osd allow * mds allow * -o /var/lib/ceph/mgr/ceph-mgr1/keyring
[ceph01][INFO ] Running command: systemctl enable ceph-mgr@mgr1
[ceph01][WARNIN] Created symlink from /etc/systemd/system/ceph-mgr.target.wants/ceph-mgr@mgr1.service to /usr/lib/systemd/system/ceph-mgr@.service.
[ceph01][INFO ] Running command: systemctl start ceph-mgr@mgr1
[ceph01][INFO ] Running command: systemctl enable ceph.target
You have new mail in /var/spool/mail/root
4.1 创建镜像(node1)
查看存储池
[root@ceph01 ceph-cluster]# ceph osd lspools
[root@ceph01 ceph-cluster]# ceph osd pool create pool-zk 100
pool 'pool-zk' created
指定池为块设备
[root@ceph01 ceph-cluster]# ceph osd pool application enable pool-zk rbd
enabled application 'rbd' on pool 'pool-zk'
重命名为pool为rbd
[root@ceph01 ceph-cluster]# ceph osd pool rename pool-zk rbd
pool 'pool-zk' renamed to 'rbd'
[root@ceph01 ceph-cluster]# ceph osd lspools
1 rbd
来源：https://www.cnblogs.com/shuihuaboke/p/12582960.html