Pacemaker+Haproxy实现高可用和负载均衡

1. 配置高级的yum源(server1、server2)
   [root@server1 yum.repos.d]# vim rhel-source.repo

    name=Red Hat Enterprise Linux $releasever - $basearch - Source
    baseurl=http://172.25.61.250/rhel6.5
    enabled=1
    gpgcheck=1
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
    
    [LoadBalancer]
    name=Red Hat Enterprise Linux $releasever - $basearch - Source
    baseurl=http://172.25.61.250/rhel6.5/LoadBalancer
    enabled=1
    gpgcheck=0
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
    
    [HighAvailability]
    name=Red Hat Enterprise Linux $releasever - $basearch - Source
    baseurl=http://172.25.61.250/rhel6.5/HighAvailability
    enabled=1
    gpgcheck=0
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
    
    [ResilientStorage]
    name=Red Hat Enterprise Linux $releasever - $basearch - Source
    baseurl=http://172.25.61.250/rhel6.5/ResilientStorage
    enabled=1
    gpgcheck=0
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
    
    [ScalableFileSystem]
    name=Red Hat Enterprise Linux $releasever - $basearch - Source
    baseurl=http://172.25.61.250/rhel6.5/ScalableFileSystem
    enabled=1
    gpgcheck=0
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
   

[root@server1 yum.repos.d]# yum clean all
[root@server1 yum.repos.d]# yum repolist
[root@server1 yum.repos.d]# scp rhel-source.repo server2:/etc/yum.repos.d/

2. 下软件，提供crm命令行接口，配置心跳节点，同时启动
   [root@server1 yum.repos.d]# yum clean all
   [root@server1 yum.repos.d]# yum repolist
   [root@server1 yum.repos.d]# scp rhel-source.repo server2:/etc/yum.repos.d/

3. 安装软件
   server1：

    yum install pssh-2.3.1-2.1.x86_64.rpm  crmsh-1.2.6-0.rc2.2.1.x86_64.rpm -y
    yum install pacemaker -y
     cd /etc/corosync/
     [root@server1 corosync]# cp corosync.conf.example corosync.conf
    [root@server1 corosync]# vim corosync.conf
                      bindnetaddr: 172.25.61.0	#同网段
                      mcastaddr: 226.94.1.1	
                      mcastport: 5413		
                      ttl: 1
      service {
              name:pacemaker
              ver:0
      }
    
    [root@server1 corosync]# scp /etc/corosync/corosync.conf server2:/etc/corosync/
    
    [root@server1 corosync]# scp /etc/corosync/corosync.conf server2:/etc/corosync/
    ##给sever2发一份
   

4.server1和server2开启服务

	[root@server2 corosync]# /etc/init.d/corosync start
	Starting Corosync Cluster Engine (corosync): [ OK ]
	[root@server1 corosync]# /etc/init.d/corosync start
	Starting Corosync Cluster Engine (corosync): [ OK ]

5. 设置集群资源

    [root@server2 corosync]# crm
    crm(live)# configure
    crm(live)configure# show
    node server1
    node server2
    property $id="cib-bootstrap-options" \
    	dc-version="1.1.10-14.el6-368c726" \
    	cluster-infrastructure="classic openais (with plugin)" \
    	expected-quorum-votes="2"ww
    crm(live)configure# 				####初始化
    
    crm(live)configure# verify 
       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
    
    01.将fence设备关闭
    crm(live)configure# property stonith-enabled=false
    crm(live)configure# verify
    crm(live)configure# commit
    
    02.先设置集群资源VIP，再设置apache服务
    crm(live)configure# primitive vip ocf:heartbeat:IPaddr2 params ip=172.25.61.100 nic=eth0 cidr_netmask=24
    crm(live)configure# verify 
    crm(live)configure# commit 
   

6. server1和server2安装http，撰写默认发布页

   [root@server1 corosync]# cd /var/www/html/
   [root@server1 html]# vim index.html
   [root@server1 html]# cat index.html
   server1

7. 启动脚本

    crm(live)configure# primitive apache lsb:httpd op monitor interval=10s
    crm(live)configure# verify 
    crm(live)configure# commit 
   

注意：动态监控下看到此时的VIP在server1上，httpd在server2上

8. 设置资源组

    crm(live)configure# group website vip apache 
    crm(live)configure# verify 
    crm(live)configure# commit 
   

9. 测试

    [root@foundation61 Desktop]# curl 172.25.61.100
    server1
    [root@foundation61 Desktop]# curl 172.25.61.100
    server1
    [root@foundation61 Desktop]# curl 172.25.61.100
    server1
    [root@foundation61 Desktop]# curl 172.25.61.100
    server2
    [root@foundation61 Desktop]# curl 172.25.61.100
    server2
    [root@foundation61 Desktop]# curl 172.25.61.100
    server2
   

用客户主机访问，server1的corosyna服务停掉之后，有访问到了server2节点