# 查看当前版本
[root@ha-node1 ~]# pcs –version
pcs 0.11.4

[root@ha-node1 ~]# rpm -q pacemaker corosync
pacemaker-2.1.6-1.el9.x86_64
corosync-3.1.7-1.el9.x86_64

# 备份集群配置
[root@ha-node1 ~]# pcs config backup /backup/cluster_before_upgrade.tar.gz
Cluster configuration backed up to /backup/cluster_before_upgrade.tar.gz

# 验证备份
[root@ha-node1 ~]# ls -lh /backup/cluster_before_upgrade.tar.gz
-rw-r–r–. 1 root root 2.5K Apr 4 12:45:00 /backup/cluster_before_upgrade.tar.gz

# 查看集群状态
[root@ha-node1 ~]# pcs status
Cluster name: mycluster
Cluster Summary:
* Stack: corosync
* Current DC: ha-node1 (version 2.1.6-1.el9)
* Last updated: Fri Apr 4 12:45:00 2026
* Last change: Fri Apr 4 12:40:00 2026
* 2 nodes configured
* 3 resource instances configured

Node List:
* Online: [ ha-node1 ha-node2 ]

Full List of Resources:
* vip (ocf::heartbeat:IPaddr2): Started ha-node1
* nginx (systemd:nginx): Started ha-node1
* mysql (systemd:mariadb): Started ha-node1

# 将node2设置为待机模式
[root@ha-node1 ~]# pcs cluster standby ha-node2

# 验证资源已转移到node1
[root@ha-node1 ~]# pcs status resources
* vip (ocf::heartbeat:IPaddr2): Started ha-node1
* nginx (systemd:nginx): Started ha-node1
* mysql (systemd:mariadb): Started ha-node1

# 停止node2集群服务
[root@ha-node1 ~]# pcs cluster stop ha-node2
ha-node2: Stopping Cluster (pacemaker)…
ha-node2: Stopping Cluster (corosync)…

# 在node2上升级软件
[root@ha-node2 ~]# dnf update -y pacemaker corosync pcs
Updating Subscription Management repositories.
Last metadata expiration check: 0:05:23 ago on Fri Apr 4 12:45:00 2026.
Dependencies resolved.
================================================================================
Package Architecture Version Repository Size
================================================================================
Upgrading:
pacemaker x86_64 2.1.7-1.el9 appstream 1.3 M
corosync x86_64 3.1.8-1.el9 appstream 290 k
pcs x86_64 0.11.5-1.el9 appstream 3.6 M

Transaction Summary
================================================================================
Upgrade 3 Packages

Total download size: 5.2 M
Downloading Packages:
(1/3): corosync-3.1.8-1.el9.x86_64.rpm 2.9 MB/s | 290 kB 00:00
(2/3): pacemaker-2.1.7-1.el9.x86_64.rpm 5.2 MB/s | from PG视频:www.itpux.com1.3 MB 00:00
(3/3): pcs-0.11.5-1.el9.x86_64.rpm 8.0 MB/s | 3.6 MB 00:00
——————————————————————————–
Total 5.2 MB/s | 5.2 MB 00:01
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Upgrading : corosync-3.1.8-1.el9.x86_64 1/3
Upgrading : pacemaker-2.1.7-1.el9.x86_64 2/3
Upgrading : pcs-0.11.5-1.el9.x86_64 3/3
Running scriptlet: pcs-0.11.5-1.el9.x86_64 3/3
Verifying : corosync-3.1.8-1.el9.x86_64 1/3
Verifying : pacemaker-2.1.7-1.el9.x86_64 2/3
Verifying : pcs-0.11.5-1.el9.x86_64 3/3

Upgraded:
corosync-3.1.8-1.el9.x86_64 pacemaker-2.1.7-1.el9.x86_64 pcs-0.11.5-1.el9.x86_64

Complete!更多视频教程www.fgedu.net.cn

# 启动node2集群服务
[root@ha-node1 ~]# pcs cluster start ha-node2
ha-node2: Starting Cluster (corosync)…
ha-node2: Starting Cluster (pacemaker)…

# 取消node2待机模式
[root@ha-node1 ~]# pcs cluster unstandby ha-node2

# 验证node2上线
[root@ha-node1 ~]# pcs status nodes
Pacemaker Nodes:
Online: ha-node1 ha-node2
Standby:
Maintenance:
Offline:

# 将node1设置为待机模式
[root@ha-node1 ~]# pcs cluster standby ha-node1

# 验证资源已转移到node2
[root@ha-node1 ~]# pcs status resources
* vip (ocf::heartbeat:IPaddr2): Started ha-node2
* nginx (systemd:nginx): Started ha-node2
* mysql (systemd:mariadb): Started ha-node2

# 停止node1集群服务
[root@ha-node1 ~]# pcs cluster stop ha-node1
ha-node1: Stopping Cluster (pacemaker)…
ha-node1: Stopping Cluster (corosync)…

# 在node1上升级软件
[root@ha-node1 ~]# dnf update -y pacemaker corosync pcs
Updating Subscription Management repositories.
Last metadata expiration check: 0:05:23 ago on Fri Apr 4 12:50:00 2026.
Dependencies resolved.
================================================================================
Package Architecture Version Repository Size
================================================================================
Upgrading:
pacemaker x86_64 2.1.7-1.el9 appstream 1.3 M
corosync x86_64 3.1.8-1.el9 appstream 290 k
pcs x86_64 0.11.5-1.el9 appstream 3.6 M

Transaction Summary
================================================================================
Upgrade 3 Packages

Total download size: 5.2 M
Downloading Packages:
(1/3): corosync-3.1.8-1.el9.x86_64.rpm 2.9 MB/s | 290 kB 00:00
(2/3): pacemaker-2.1.7-1.el9.x86_64.rpm 5.2 MB/s | 1.3 MB 00:00
(3/3): pcs-0.11.5-1.el9.x86_64.rpm 8.0 MB/s | 3.6 MB 00:00
——————————————————————————–
Total 5.2 MB/s | 5.2 MB 00:01
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Upgrading : corosync-3.1.8-1.el9.x86_64 1/3
Upgrading : pacemaker-2.1.7-1.el9.x86_64 2/3
Upgrading : pcs-0.11.5-1.el9.x86_64 3/3
Running scriptlet: pcs-0.11.5-1.el9.x86_64 3/3
Verifying : corosync-3.1.8-1.el9.x86_64 1/3
Verifying : pacemaker-2.1.7-1.el9.x86_64 2/3
Verifying : pcs-0.11.5-1.el9.x86_64 3/3

Upgraded:
corosync-3.1.8-1.el9.x86_64 pacemaker-2.1.7-1.el9.x86_64 pcs-0.11.5-1.el9.x86_64

Complete!

# 启动node1集群服务
[root@ha-node1 ~]# pcs cluster start ha-node1
ha-node1: Starting Cluster (corosync)…
ha-node1: Starting Cluster (pacemaker)…

# 取消node1待机模式
[root@ha-node1 ~]# pcs cluster unstandby ha-node1

# 验证升级后版本
[root@ha-node1 ~]# rpm -q pacemaker corosync pcs
pacemaker-2.1.7-1.el9.x86_64
corosync-3.1.8-1.el9.x86_64
pcs-0.11.5-1.el9.x86_64

# 验证集群状态
[root@ha-node1 ~]# pcs status
Cluster name: mycluster
Cluster Summary:
* Stack: corosync
* Current DC: ha-node2 (version 2.1.7-1.el9)
* Last updated: Fri Apr 4 12:55:00 2026
* Last change: Fri Apr 4 12:50:00 2026
* 2 nodes configured
* 3 resource instances configured

Node List:
* Online: [ ha-node1 ha-node2 ]

Full List of Resources:
* vip (ocf::heartbeat:IPaddr2): Started ha-node2
* nginx (systemd:nginx): Started ha-node2
* mysql (systemd:mariadb): Started ha-node2

# 添加新节点到集群
[root@ha-node1 ~]# pcs cluster node add ha-node3
Sending ‘corosync authkey’, ‘pacemaker authkey’ to ‘ha-node3’
ha-node3: successful distribution of the file ‘corosync authkey’
ha-node3: successful distribution of the file ‘pacemaker authkey’
Sending ‘corosync.conf’ to ‘ha-node3’
ha-node3: successful distribution 学习交流加群风哥微信: itpux-comof the file ‘corosync.conf’
ha-node3: Succeeded

# 在新节点启动集群服务
[root@ha-node3 ~]# pcs cluster start
Starting Cluster (corosync)…
Starting Cluster (pacemaker)…

# 验证新节点加入
[root@ha-node1 ~]# pcs status nodes
Pacemaker Nodes:
Online: ha-node1 ha-node2 ha-node3
Standby:
Maintenance:
Offline:

# 将资源迁移到新节点
[root@ha-node1 ~]# pcs resource move vip ha-node3
[root@ha-node1 ~]# pcs resource move nginx ha-node3
[root@ha-node1 ~]# pcs resource move mysql ha-node3

# 验证资源迁移
[root@ha-node1 ~]# pcs status resources
* vip (ocf::heartbeat:IPaddr2): Started ha-node3
* nginx (systemd:nginx): Started ha-node3
* mysql (systemd:mariadb): Started ha-node3

# 清除移动约束
[root@ha-node1 ~]# pcs resource clear vip
[root@ha-node1 ~]# pcs resource clear nginx
[root@ha-node1 ~]# pcs resource clear mysql

# 将旧节点设置为待机
[root@ha-node1 ~]# pcs cluster standby ha-node1

# 停止旧节点集群服务
[root@ha-node1 ~]# pcs cluster stop ha-node1
ha-node1: Stopping Cluster (pacemaker)…
ha-node1: Stopping Cluster (corosync)…

# 从集群中移除旧节点
[root@ha-node3 ~]# pcs cluster node remove ha-node1
Attempting to stop corosync on ha-node1…
ha-node1: Stopping Cluster…
ha-node1: Successfully stopped cluster
Attempting to remove ha-node1 from cluster…
ha-node1: Successfully removed

# 验证节点移除
[root@ha-node3 ~]# pcs status nodes
Pacemaker Nodes:
Online: ha-node2 ha-node3
Standby:
Maintenance:
Offline:

# 验证集群状态
[root@ha-node3 ~]# pcs status
Cluster name: mycluster
Cluster Summary:
* Stack: corosync
* Current DC: ha-node3 (version 2.1.7-1.el9)
* Last updated: Fri Apr 4 13:00:00 2026
* Last change: Fri Apr 4 12:58:00 2026
* 2 nodes configured
* 3 resource instances configured

Node List:
* Online: [ ha-node2 ha-node3 ]

Full List of Resources:
* vip (ocf::heartbeat:IPaddr2): Started ha-node3
* nginx (systemd:nginx): Started ha-node3
* mysql (systemd:mariadb): Started ha-node3