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版本：2.5

控制節點更換指南

從叢集移除控制節點​

本指南僅適用於非主控制器。

連接至控制節點​

    $ ssh [email protected]
    Warning: Permanently added '192.168.1.x' (ECDSA) to the list of known hosts.
    Password:

移除節點​

從叢集移除 cc3

  cc1> cluster
  cc1:cluster> remove_node
  1: compute01
  2: cc3
  3: compute02
  4: cc1
  5: cc2
  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

備份 cc3 政策​

從您當地的電腦終端機

    scp -r root@cc3_IPADDRESS:/etc/policies Downloads/cc3_policy

將 cc3 關機​

    $ ssh [email protected]
    Warning: Permanently added '192.168.1.103' (ECDSA) to the list of known hosts.
    Password:
    Welcome to the Cube Appliance
    Enter "help" for a list of available commands
    cc3> shutdown
    Enter 'YES' to confirm: YES
    Connection to 192.168.1.103 closed by remote host.
    Connection to 192.168.1.103 closed.

新增控制節點​

準備一個已安裝 CubeCOS 的新節點

Configuration​

請依照下列任一選項重新配置新的 cc3 節點：

連線至實體機管理介面​

    $ ssh [email protected]
    Warning: Permanently added '192.168.1.103' (ECDSA) to the list of known hosts.
    Password:

系統修復服務​

Welcome to the Cube Appliance
Enter "help" for a list of available commands
cc3> cluster
cc3:cluster> check
          Service  Status  Report
      ClusterLink      ok  [ link(v) clock(v) dns(v) ]
       ClusterSys      ok  [ bootstrap(v) license(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      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) ]
cc3:cluster>

檢查高可用性狀態​

cc3:cluster> health HaCluster

[ HaCluster ]
hacluster:
Last updated: Fri Aug  7 16:52:30 2020  Last change: Fri Aug  7 13:11:58 2020 by hacluster via crmd on cc1
Stack: corosync
Current DC: cc1 (version 1.1.14-70404b0) - partition with quorum
5 nodes and 3 resources configured

Online: [ compute01 compute02 cc1 cc2 cc3 ]

Full list of resources:

vip (ocf::heartbeat:IPaddr2): Started cc3
haproxy (systemd:haproxy-ha): Started cc3
cinder-volume (systemd:cinder-volume): Started cc2