Compute node (HCI) Replacement Guide
Remove Compute node from cluster#
Stop the compute host#
Goto Admin > Compute > All Hypervisors and click Compute host tab. Look for the hostname you wish to remove and click on button DISABLE SERVICE
Disable service#
Leave a reason and click DISABLE SERVICE
Service Disabled#
Make sure the service is disabled
Migrate Instances from disabled host#
Goto Admin > Compute > Instances, look for the instances which is hosted on DISABLED Host and start the LIVE MIGRATE INSTANCE from the action menu
Allocate the instance to new host#
You can choose a preferred host to migrate or Automatically and SUBMIT
All instances has been migrated#
Repeat the steps and migrate the rest of the Instances
Connect to control node#
$ ssh [email protected]Warning: Permanently added '192.168.1.x' (ECDSA) to the list of known hosts.Password:Remove the compute node#
control01> clustercontrol01:cluster> remove_node1: compute012: control033: compute024: control015: control02Enter index: 3this command is only applicable for compute or storage nodesmake sure its running instances have been properly terminated or migratedshutdown the target host before proceedingEnter 'YES' to confirm: YESResults#
Goto Admin > Compute > All Hypervisors and click Compute host tab. Host compute02 has been removed from the Cluster
Backup Compute02 policies#
From your local pc terminal
$ scp -r root@Compute02_IPADDRESS:/etc/policies Downloads/compute02_policyShutdown the compute02#
Adding Compute Host#
Prepare a new node with CubeOS installed
Configuration#
Reconfigure a new compute02 node by following any options of the list below:
Connect to controller#
$ ssh [email protected]Warning: Permanently added '192.168.1.x' (ECDSA) to the list of known hosts.Password:Check & Repair services#
Welcome to the Cube ApplianceEnter "help" for a list of available commandscontrol01> clustercontrol01:cluster> check_repair Service Status Report ClusterLink ok [ link(v) ] ClusterSettings ok [ etcd(v) ] HaCluster ok [ hacluster(v) ] MsgQueue ok [ rabbitmq(v) ] IaasDb ok [ mysql(v) ] VirtualIp ok [ vip(v) haproxy_ha(v) ] Storage FIXING [ ceph(v) ceph_mon(v) ceph_mgr(v) ceph_mds(v) ceph_osd(1) ceph_rgw(v) ] ok [ ceph_osd(v) ] ApiService ok [ haproxy(v) apache2(v) lmi(v) memcache(v) ] Compute ok [ nova(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) ] InstanceHa ok [ masakari(v) ] DisasterRecovery ok [ freezer(v) es235(v) ] DataPipe ok [ zookeeper(v) kafka(v) ] Metrics ok [ ceilometer(v) monasca(v) telegraf(v) grafana(v) ] LogAnalytics ok [ filebeat(v) auditbeat(v) logstash(v) es(v) kibana(v) ] Notifications ok [ influxdb(v) kapacitor(v) ]control01:cluster>Results#
Goto Admin > Compute > All Hypervisors and click Compute host tab. Host compute02 has been added back to the Cluster
