集群管理

您可以以 root 用户身份使用以下命令手动将群集资源从一个节点迁移到另一个节点：

root@prihana ~]# pcs resource move SAPHana_HDB_00-master
Warning: Creating location constraint cli-ban-SAPHana_HDB_00-
master-on-prihana with a score of -INFINITY for resource 
SAPHana_HDB_00-master on node prihana.
This will prevent SAPHana_HDB_00-master from running on prihana 
until the constraint is removed. This will be the case even if 
prihana is the last node in the cluster.

您可以再次检查群集的状态以验证资源迁移的状态。

[root@prihana ~]#pcs status
Thu Nov 12 10:45:14 2020

Cluster name: rhelhanaha
Stack: corosync
Current DC: sechana (version 1.1.19-8.el7_6.5-c3c624ea3d) - partition with quorum
Last updated: Thu Nov 12 10:45:14 2020
Last change: Thu Nov 12 10:45:06 2020 by root via crm_attribute on sechana

2 nodes configured
6 resources configured

Online: [ prihana sechana ]

Full list of resources:

 clusterfence   (stonith:fence_aws):    Started prihana
 Clone Set: SAPHanaTopology_HDB_00-clone [SAPHanaTopology_HDB_00]
     Started: [ prihana sechana ]
 Master/Slave Set: SAPHana_HDB_00-master [SAPHana_HDB_00]
     Masters: [ sechana ]
     Stopped: [ prihana ]
 hana-oip       (ocf::heartbeat:aws-vpc-move-ip):       Started sechana

Daemon Status:
  corosync: active/enabled
  pacemaker: active/enabled
  pcsd: active/enabled

清理失败的操作，如下一节所示。每次调用 r pcs esource move 命令时，群集都会创建位置限制以导致资源移动。必须取消这些限制，以允许将来自动进行故障转移。要移除移动所产生的约束，请运行以下命令：

root@prihana ~]# pcs resource clear SAPHana_HDB_00-master

检查集群的状态：

root@prihana ~]# pcs status
Cluster name: rhelhanaha
Stack: corosync
Current DC: sechana (version 1.1.19-8.el7_6.5-c3c624ea3d) - partition with quorum
Last updated: Thu Nov 12 10:49:44 2020
Last change: Thu Nov 12 10:49:12 2020 by root via crm_attribute on sechana

2 nodes configured
6 resources configured

Online: [ prihana sechana ]

Full list of resources:

 clusterfence   (stonith:fence_aws):    Started prihana
 Clone Set: SAPHanaTopology_HDB_00-clone [SAPHanaTopology_HDB_00]
     Started: [ prihana sechana ]
 Master/Slave Set: SAPHana_HDB_00-master [SAPHana_HDB_00]
     Masters: [ sechana ]
     Slaves: [ prihana ]
 hana-oip       (ocf::heartbeat:aws-vpc-move-ip):       Started sechana

Daemon Status:
  corosync: active/enabled
  pacemaker: active/enabled
  pcsd: active/enabled