Storage node Removal Guide
Remove Storage node from cluster
Make sure your storage data replication either 2 or 3.
Connect to controller
$ ssh [email protected]
Warning: Permanently added '192.168.1.x' (ECDSA) to the list of known hosts.
Password:
Check the storage status
control01> storage
control01:storage> status
cluster:
id: c6e64c49-09cf-463b-9d1c-b6645b4b3b85
health: HEALTH_OK
services:
mon: 3 daemons, quorum control01,control02,control03
mgr: control01(active), standbys: control02, control03
mds: cephfs-1/1/1 up {0=control01=up:active}, 2 up:standby
osd: 24 osds: 24 up, 24 in
rgw: 3 daemons active
data:
pools: 23 pools, 1837 pgs
objects: 10.50k objects, 12.7GiB
usage: 31.3GiB used, 3.74TiB / 3.77TiB avail
pgs: 1837 active+clean
io:
client: 15.5KiB/s rd, 0B/s wr, 15op/s rd, 10op/s wr
+----+-----------+-------+-------+--------+---------+--------+---------+-----------+
| id | host | used | avail | wr ops | wr data | rd ops | rd data | state |
+----+-----------+-------+-------+--------+---------+--------+---------+-----------+
| 0 | control01 | 2063M | 117G | 0 | 0 | 2 | 61 | exists,up |
| 1 | control01 | 2020M | 117G | 0 | 0 | 1 | 36 | exists,up |
| 2 | control01 | 1089M | 135G | 0 | 0 | 0 | 0 | exists,up |
| 3 | control01 | 1081M | 135G | 0 | 0 | 0 | 0 | exists,up |
| 4 | control02 | 1656M | 117G | 0 | 0 | 0 | 0 | exists,up |
| 5 | control02 | 2073M | 116G | 0 | 0 | 0 | 0 | exists,up |
| 6 | control02 | 1089M | 135G | 0 | 0 | 0 | 0 | exists,up |
| 7 | control02 | 1089M | 135G | 0 | 0 | 4 | 0 | exists,up |
| 8 | control03 | 1781M | 117G | 0 | 0 | 0 | 0 | exists,up |
| 9 | control03 | 1961M | 117G | 0 | 0 | 7 | 157 | exists,up |
| 10 | control03 | 1089M | 135G | 0 | 0 | 0 | 0 | exists,up |
| 11 | control03 | 1089M | 135G | 0 | 0 | 0 | 0 | exists,up |
| 12 | compute01 | 1462M | 56.5G | 0 | 0 | 0 | 0 | exists,up |
| 13 | compute01 | 1400M | 56.6G | 0 | 0 | 0 | 0 | exists,up |
| 14 | compute01 | 1334M | 56.7G | 0 | 0 | 0 | 6 | exists,up |
| 15 | compute01 | 1426M | 56.6G | 0 | 0 | 0 | 0 | exists,up |
| 16 | compute01 | 1101M | 464G | 0 | 0 | 0 | 19 | exists,up |
| 17 | compute01 | 1089M | 464G | 0 | 0 | 0 | 0 | exists,up |
| 18 | storage01 | 1040M | 57.0G | 0 | 0 | 0 | 0 | exists,up |
| 19 | storage01 | 1040M | 57.0G | 0 | 0 | 0 | 0 | exists,up |
| 20 | storage01 | 1040M | 57.0G | 0 | 0 | 0 | 0 | exists,up |
| 21 | storage01 | 1048M | 57.0G | 0 | 0 | 0 | 0 | exists,up |
| 22 | storage01 | 1081M | 464G | 0 | 0 | 0 | 0 | exists,up |
| 23 | storage01 | 1105M | 464G | 0 | 0 | 0 | 0 | exists,up |
+----+-----------+-------+-------+--------+---------+--------+---------+-----------+
Remove node
Removing storage01 from the cluster
control01:cluster> remove_node
1: compute01
2: storage01
Enter index: 2
this command is only applicable for compute or storage nodes
make sure its running instances have been properly terminated or migrated
shutdown the target host before proceeding
Enter 'YES' to confirm: YES
control01:cluster>
Check the storage status
storage01 node has been removed from the cluster, ceph is recovering the lost replication data automatically
control01> storage
control01:storage> status
cluster:
id: c6e64c49-09cf-463b-9d1c-b6645b4b3b85
health: HEALTH_WARN
Reduced data availability: 2 pgs inactive
Degraded data redundancy: 139/21222 objects degraded (0.655%), 10 pgs degraded
services:
mon: 3 daemons, quorum control01,control02,control03
mgr: control01(active), standbys: control02, control03
mds: cephfs-1/1/1 up {0=control01=up:active}, 2 up:standby
osd: 18 osds: 18 up, 18 in; 510 remapped pgs
rgw: 3 daemons active
data:
pools: 23 pools, 1837 pgs
objects: 10.50k objects, 12.7GiB
usage: 25.4GiB used, 2.61TiB / 2.63TiB avail
pgs: 10.670% pgs unknown
0.435% pgs not active
139/21222 objects degraded (0.655%)
1406 active+clean
214 active+clean+remapped
196 unknown
9 active+recovery_wait+degraded
5 activating+remapped
3 activating
3 active+undersized
1 active+undersized+degraded+remapped+backfilling
io:
client: 13.1KiB/s rd, 0B/s wr, 13op/s rd, 9op/s wr
recovery: 1.11MiB/s, 4objects/s
+----+-----------+-------+-------+--------+---------+--------+---------+-----------+
| id | host | used | avail | wr ops | wr data | rd ops | rd data | state |
+----+-----------+-------+-------+--------+---------+--------+---------+-----------+
| 0 | control01 | 2060M | 117G | 0 | 0 | 0 | 0 | exists,up |
| 1 | control01 | 2025M | 117G | 0 | 0 | 0 | 0 | exists,up |
| 2 | control01 | 1093M | 135G | 0 | 0 | 0 | 0 | exists,up |
| 3 | control01 | 1086M | 135G | 10 | 0 | 5 | 69 | exists,up |
| 4 | control02 | 1668M | 117G | 0 | 0 | 0 | 0 | exists,up |
| 5 | control02 | 2086M | 116G | 0 | 0 | 0 | 0 | exists,up |
| 6 | control02 | 1093M | 135G | 0 | 0 | 0 | 0 | exists,up |
| 7 | control02 | 1094M | 135G | 0 | 0 | 4 | 0 | exists,up |
| 8 | control03 | 1785M | 117G | 0 | 0 | 0 | 0 | exists,up |
| 9 | control03 | 1957M | 117G | 0 | 0 | 0 | 0 | exists,up |
| 10 | control03 | 1093M | 135G | 0 | 0 | 0 | 0 | exists,up |
| 11 | control03 | 1094M | 135G | 0 | 0 | 0 | 0 | exists,up |
| 12 | compute01 | 1463M | 56.5G | 0 | 0 | 0 | 0 | exists,up |
| 13 | compute01 | 1402M | 56.6G | 0 | 0 | 0 | 0 | exists,up |
| 14 | compute01 | 1336M | 56.7G | 0 | 0 | 0 | 0 | exists,up |
| 15 | compute01 | 1427M | 56.6G | 0 | 0 | 0 | 0 | exists,up |
| 16 | compute01 | 1106M | 464G | 0 | 0 | 0 | 0 | exists,up |
| 17 | compute01 | 1094M | 464G | 0 | 0 | 0 | 0 | exists,up |
+----+-----------+-------+-------+--------+---------+--------+---------+-----------+
Check repair services
control1> cluster
control1:cluster> check_repair
Service Status Report
ClusterLink ok [ link(v) clock(v) dns(v) ]
ClusterSys ok [ bootstrap(v) license(v) ]
ClusterSettings ok [ etcd(v) ]
HaCluster FIXING [ hacluster(3) ]
ok [ hacluster(f) ]
MsgQueue ok [ rabbitmq(v) ]
IaasDb ok [ mysql(v) ]
VirtualIp ok [ vip(v) haproxy_ha(v) ]
Storage ok [ ceph(v) ceph_mon(v) ceph_mgr(v) ceph_mds(v) ceph_osd(v) ceph_rgw(v) rbd_target(v) ]
ApiService ok [ haproxy(v) httpd(v) lmi(v) memcache(v) ]
SingleSignOn ok [ keycloak(v) ]
Compute ok [ nova(v) ]
Baremetal ok [ ironic(v) ]
Network ok [ neutron(v) ]
Image ok [ glance(v) ]
BlockStor ok [ cinder(v) ]
FileStor ok [ manila(v) ]
ObjectStor ok [ swift(v) ]
Orchestration ok [ heat(v) ]
LBaaS ok [ octavia(v) ]
DNSaaS ok [ designate(v) ]
K8SaaS ok [ k3s(v) rancher(v) ]
InstanceHa ok [ masakari(v) ]
DisasterRecovery ok [ freezer(v) ]
BusinessLogic ok [ mistral(v) murano(v) cloudkitty(v) senlin(v) watcher(v) ]
ApiManager ok [ tyk(v) redis(v) mongodb(v) ]
DataPipe ok [ zookeeper(v) kafka(v) ]
Metrics ok [ monasca(v) telegraf(v) grafana(v) ]
LogAnalytics ok [ filebeat(v) auditbeat(v) logstash(v) es(v) kibana(v) ]
Notifications ok [ influxdb(v) kapacitor(v) ]
control1:cluster>