32.2. 显示恢复集群的状态

要配置主集群和灾难恢复集群，以便可以显示这两个集群的状态，请执行以下步骤。

注意

设置灾难恢复集群不会自动配置资源或复制数据。这些项目必须由用户手动配置。

在本例中：

  • 主集群将命名为 PrimarySite，它由 z1.example.com 和 z2.example.com 组成。
  • 灾难恢复站点集群将命名为 DRsite，它由 z3.example.com 和 z4.example.com 组成。

这个示例设置了一个没有配置资源或保护保护的基本集群。

步骤

  1. 身份验证将用于这两个集群的所有节点。 

    [root@z1 ~]# pcs host auth z1.example.com z2.example.com z3.example.com z4.example.com -u hacluster -p password
z1.example.com: Authorized
z2.example.com: Authorized
z3.example.com: Authorized
z4.example.com: Authorized

  2. 创建用作集群的主集群并为集群启动集群服务的集群。 

    [root@z1 ~]# pcs cluster setup PrimarySite z1.example.com z2.example.com --start
{...}
Cluster has been successfully set up.
Starting cluster on hosts: 'z1.example.com', 'z2.example.com'...

  3. 创建用作灾难恢复集群的集群,，为集群启动集群服务。 

    [root@z1 ~]# pcs cluster setup DRSite z3.example.com z4.example.com --start
{...}
Cluster has been successfully set up.
Starting cluster on hosts: 'z3.example.com', 'z4.example.com'...

  4. 从主集群中的一个节点中，将第二个集群设置为恢复站点。该恢复站点由其中一个节点的名称定义。 

    [root@z1 ~]# pcs dr set-recovery-site z3.example.com
Sending 'disaster-recovery config' to 'z3.example.com', 'z4.example.com'
z3.example.com: successful distribution of the file 'disaster-recovery config'
z4.example.com: successful distribution of the file 'disaster-recovery config'
Sending 'disaster-recovery config' to 'z1.example.com', 'z2.example.com'
z1.example.com: successful distribution of the file 'disaster-recovery config'
z2.example.com: successful distribution of the file 'disaster-recovery config'

  5. 检查灾难恢复配置。 

    [root@z1 ~]# pcs dr config
Local site:
  Role: Primary
Remote site:
  Role: Recovery
  Nodes:
    z3.example.com
    z4.example.com

  6. 检查主集群的状态以及主集群中节点的灾难恢复集群。 

    [root@z1 ~]# pcs dr status
--- Local cluster - Primary site ---
Cluster name: PrimarySite

WARNINGS:
No stonith devices and stonith-enabled is not false

Cluster Summary:
  * Stack: corosync
  * Current DC: z2.example.com (version 2.0.3-2.el8-2c9cea563e) - partition with quorum
  * Last updated: Mon Dec  9 04:10:31 2019
  * Last change:  Mon Dec  9 04:06:10 2019 by hacluster via crmd on z2.example.com
  * 2 nodes configured
  * 0 resource instances configured

Node List:
  * Online: [ z1.example.com z2.example.com ]

Full List of Resources:
  * No resources

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


--- Remote cluster - Recovery site ---
Cluster name: DRSite

WARNINGS:
No stonith devices and stonith-enabled is not false

Cluster Summary:
  * Stack: corosync
  * Current DC: z4.example.com (version 2.0.3-2.el8-2c9cea563e) - partition with quorum
  * Last updated: Mon Dec  9 04:10:34 2019
  * Last change:  Mon Dec  9 04:09:55 2019 by hacluster via crmd on z4.example.com
  * 2 nodes configured
  * 0 resource instances configured

Node List:
  * Online: [ z3.example.com z4.example.com ]

Full List of Resources:
  * No resources

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

有关灾难恢复配置的其他显示选项，请参阅 pcs dr 命令的帮助页面。