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user@admin00:~$ ssh node-03 sudo rm -rf /var/lib/ceph/mgr/ceph-node-03/
cluster:
id: 22e73d1c-a5df-4692-9494-4b6e5a54b003
health: HEALTH_OK
services:
mon: 4 daemons, quorum node-00,node-01,node-02,node-03 (age 45m)
mgr: node-01(active, since 5m), standbys: node-00, node-02
mds: cephfs:1 {0=node-02=up:active} 2 up:standby
osd: 4 osds: 4 up (since 45m), 4 in (since 3d)
user@admin00:~$ ssh node-03 sudo systemctl stop ceph-mgr@node-03
cluster:
id: 22e73d1c-a5df-4692-9494-4b6e5a54b003
health: HEALTH_OK
services:
mon: 4 daemons, quorum node-00,node-01,node-02,node-03 (age 22m)
mgr: node-03(active, since 2m), standbys: node-01, node-00, node-02
mds: cephfs:1 {0=node-02=up:active} 2 up:standby
osd: 4 osds: 4 up (since 22m), 4 in (since 3d)
user@admin00:~/ssh node-03 sudo rm -rf /var/lib/ceph/mds/ceph-node-03/
cluster:
id: 22e73d1c-a5df-4692-9494-4b6e5a54b003
health: HEALTH_OK
services:
mon: 4 daemons, quorum node-00,node-01,node-02,node-03 (age 61m)
mgr: node-02(active, since 61m), standbys: node-01, node-03, node-00
mds: cephfs:1 {0=node-01=up:active} 2 up:standby
osd: 4 osds: 4 up (since 60m), 4 in (since 2d)
user@admin00:~/ssh node-03 sudo systemctl stop ceph-mds@node-03
cluster:
id: 22e73d1c-a5df-4692-9494-4b6e5a54b003
health: HEALTH_OK
services:
mon: 4 daemons, quorum node-00,node-01,node-02,node-03 (age 56m)
mgr: node-02(active, since 56m), standbys: node-01, node-03, node-00
mds: cephfs:1 {0=node-03=up:active} 3 up:standby
osd: 4 osds: 4 up (since 56m), 4 in (since 2d)
cluster:
id: 22e73d1c-a5df-4692-9494-4b6e5a54b003
health: HEALTH_OK
services:
mon: 3 daemons, quorum node-00,node-01,node-02 (age 112s)
mgr: node-02(active, since 107s), standbys: node-01, node-00
mds: cephfs:1 {0=node-00=up:active} 2 up:standby
osd: 3 osds: 3 up (since 105s), 3 in (since 39h)
user@admin00:~/ceph$ ceph-deploy mds create node-02