pacemaker搭建HTTP集群
#以node01為例修改主機名
#node02需要同樣的配置
[[email protected] ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
10.10.10.5 node01
10.10.10.6 node02
#關閉防火墻以及SElinux
#node02需要同樣配置
[[email protected] ~]# systemctl stop firewalld
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
Removed symlink /etc/systemd/system/basic.target.wants/firewalld.service.
[[email protected] ~]# setenforce 0
[[email protected] ~]# sed -i ‘s/SELINUX=enforcing/SELINUX=disabled/‘ /etc/selinux/config
#配置pacemaker的EPEL源
#node02需要同樣配置
[[email protected] ~]# cat /etc/yum.repos.d/pacemaker.repo
[pacemaker]
name=pacemaker
baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
enabled=1
gpgcheck=0
#下載pacemaker安裝包
#node02需要同樣配置
[[email protected] ~]# yum install pacemaker pcs resource-agents -y
#配置節點之間認證
#node02需要同樣配置
[[email protected] ~]# ssh-keygen -t rsa -P ‘‘
[[email protected] ~]# ssh-copy-id node02
#修改pacemaker的用戶密碼（pacemaker使用的用戶是hacluster，軟件安裝完後用戶以添加）
#node02需要同樣配置
[[email protected] ~]# passwd hacluster
#啟動pcs服務
#node02需要同樣配置
[[email protected] ~]# systemctl restart pcsd
#設置節點認證
#只在node01操作，所有操作會自動同步到node02
[[email protected] ~]# pcs cluster auth node01 node02
Username: hacluster
Password:
node02: Authorized
node01: Authorized
#創建一個名為mycluster的集群，並將node01和node02加入到集群節點上
#只在node01操作，所有操作會自動同步到node02
[[email protected] ~]# pcs cluster setup --force --name mycluster node01 node02
Destroying cluster on nodes: node01, node02...
node01: Stopping Cluster (pacemaker)...
node02: Stopping Cluster (pacemaker)...
node01: Successfully destroyed cluster
node02: Successfully destroyed cluster
Sending cluster config files to the nodes...
node01: Succeeded
node02: Succeeded
Synchronizing pcsd certificates on nodes node01, node02...
node02: Success
node01: Success
Restarting pcsd on the nodes in order to reload the certificates...
node02: Success
node01: Success
[[email protected] ~]# pcs cluster start --all
node01: Starting Cluster...
node02: Starting Cluster...
#查看集群狀態
[[email protected] ~]# pcs status
Cluster name: mycluster
WARNING: no stonith devices and stonith-enabled is not false
Stack: corosync
Current DC: node02 (version 1.1.15-11.el7_3.5-e174ec8) - partition with quorum
Last updated: Mon Sep 11 22:54:14 2017 Last change: Mon Sep 11 22:53:39 2017 by hacluster via crmd on node02
2 nodes and 0 resources configured
Online: [ node01 node02 ]
No resources
Daemon Status:
corosync: active/disabled
pacemaker: active/disabled
pcsd: active/disabled
#查看corosync的狀態
[[email protected] ~]# pcs status corosync
Membership information
----------------------
Nodeid Votes Name
1 1 node01 (local)
2 1 node02
#查看狀態是否正常
[[email protected] ~]# crm_verify -L -V
error: unpack_resources: Resource start-up disabled since no STONITH resources have been defined
error: unpack_resources: Either configure some or disable STONITH with the stonith-enabled option
error: unpack_resources: NOTE: Clusters with shared data need STONITH to ensure data integrity
Errors found during check: config not valid
**發現報錯了
#關閉報錯信息
[[email protected] ~]# pcs property set stonith-enabled=false
#設置VIP
#只在node01操作，所有操作會自動同步到node02
[[email protected] ~]# pcs resource create ClusterIP ocf:heartbeat:IPaddr2 nic=ens34 ip=10.10.10.8 cidr_netmask=32 op monitor interval=30s
#安裝http服務
#node02需要同樣配置
[[email protected] ~]# yum -y install httpd
#編輯apache首頁
#node02需要同樣配置（node2上把node01改為node02）
[[email protected] ~]# vi /var/www/html/index.html
<html>
<body>welcome to node 1 </body>
</html>
#配置apache的URL；
#為了監視您的Apache實例的健康和恢復它如果失敗,起搏器假設所使用的資源代理服務器狀態的URL。
#node02需要同樣配置
[[email protected] ~]# vi /etc/httpd/conf/httpd.conf
<Location /server-status>
SetHandler server-status
Order deny,allow
Deny from all
Allow from 127.0.0.1
</Location>
#將apache加入集群
#只在node01操作，所有操作會自動同步到node02
[[email protected]
~]# pcs resource create Web ocf:heartbeat:apache
configfile=/etc/httpd/conf/httpd.conf
statusurl="http://localhost/server-status" op monitor interval=1min
#設置apache的超時時間
##只在node01操作，所有操作會自動同步到node02
[[email protected] ~]# pcs resource op defaults timeout=240s
#將VIP和apache捆綁在一起
##只在node01操作，所有操作會自動同步到node02
[[email protected] ~]# pcs constraint colocation add Web ClusterIP INFINITY
#設置啟動順序
##只在node01操作，所有操作會自動同步到node02
[[email protected] ~]# pcs constraint order ClusterIP then Web
Adding ClusterIP Web (kind: Mandatory) (Options: first-action=start then-action=start)
#查看集群狀態
[[email protected] ~]# pcs status
Cluster name: mycluster
Stack: corosync
Current DC: node01 (version 1.1.15-11.el7_3.5-e174ec8) - partition with quorum
Last updated: Tue Sep 12 16:06:59 2017 Last change: Tue Sep 12 16:06:49 2017 by root via cibadmin on node01
2 nodes and 2 resources configured
Online: [ node01 node02 ]
Full list of resources:
ClusterIP (ocf::heartbeat:IPaddr2): Started node01
Web (ocf::heartbeat:apache): Started node01
Daemon Status:
corosync: active/disabled
pacemaker: active/disabled
pcsd: active/disabled
#此時集群都在node01上。
#我們宕掉node01，在node02上查看集群狀態
[[email protected] ~]# pcs status
Cluster name: mycluster
Stack: corosync
Current DC: node02 (version 1.1.15-11.el7_3.5-e174ec8) - partition with quorum
Last updated: Tue Sep 12 17:02:24 2017 Last change: Tue Sep 12 17:01:57 2017 by root via cibadmin on node01
2 nodes and 2 resources configured
Online: [ node02 ]
OFFLINE: [ node01 ]
Full list of resources:
ClusterIP (ocf::heartbeat:IPaddr2): Started node02
Web (ocf::heartbeat:apache): Started node02
Daemon Status:
corosync: active/disabled
pacemaker: active/disabled
pcsd: active/disabled
本文出自 “openstack+kvm+linux” 博客，請務必保留此出處http://wangzhice.blog.51cto.com/12875919/1964681
pacemaker搭建HTTP集群