CentOS 6 安装和配置Pacemaker

Posted on 2013 年 3 月 9 日 by Jose

Pacemaker安装

安装Pacemaker必须依赖:

# yum -y install automake autoconf libtool-ltdl-devel pkgconfig python glib2-devel libxml2-devel libxslt-devel python-devel gcc-c++ bzip2-devel gnutls-devel pam-devel libqb-devel

安装Cluster Stack依赖:

# yum -y install clusterlib-devel corosynclib-devel

安装Pacemaker可选依赖:

# yum -y install ncurses-devel openssl-devel cluster-glue-libs-devel docbook-style-xsl

Pacemaker安装:

# yum -y install pacemaker

crmsh安装:

# wget -P /etc/yum.repos.d/ http://download./repositories/network:/ha-clustering/RedHat_RHEL-6/network:ha-clustering.repo
# yum -y install crmsh

配置Corosync和Pacemaker

时间同步配置

同步时间:

# ntpdate cn.pool.ntp.org

ntpd的配置添加时间服务器:

# vi /etc/ntp.conf
...
server cn.pool.ntp.org
...

修改:

# vi /etc/sysconfig/ntpd
...
OPTIONS="-u ntp:ntp -x -p /var/run/ntpd.pid -g"
...

启动ntpd:

# /etc/init.d/ntpd start
Starting ntpd:                                             [  OK  ]

添加自动启动服务:

# chkconfig --level 35 ntpd on

创建集群用的Authkey

运行corosync-keygen生成authkey:

[root@P243 corosync]# cd /etc/corosync/
[root@P243 corosync]# corosync-keygen

开另外一个Session窗口,运行如下命令,加速key生成:

[root@P243 ~]# tar cvj / | md5sum > /dev/null

将生成的authkey拷贝到集群的其它主机:

[root@P243 corosync]# scp authkey root@192.168.1.241:/etc/corosync/
[root@P243 corosync]# scp authkey root@192.168.1.242:/etc/corosync/

创建配置文件/etc/corosync/corosync.conf

compatibility: whitetank

aisexec {
       user: root
       group: root
}

totem {
      version: 2
      secauth: on
      threads: 0
      interface {
               ringnumber: 0
               bindnetaddr: 192.168.1.0
               mcastaddr: 226.94.1.1
               mcastport: 5405
               ttl: 1
      }
}

logging {
      fileline: off
      to_stderr: no
      to_logfile: yes
      to_syslog: yes
      logfile: /var/log/cluster/corosync.log
      debug: off
      timestamp: on
      logger_subsys {
               subsys: AMF
               debug: off
      }
}

amf {
      mode: disabled
}

将配置文件拷贝到其它主机:

[root@P243 corosync]# scp corosync.conf root@192.168.1.241:/etc/corosync/
[root@P243 corosync]# scp corosync.conf root@192.168.1.242:/etc/corosync/

创建/etc/corosync/service.d/pacemaker

[root@P243 ~]# vi /etc/corosync/service.d/pacemaker
[root@P243 ~]# cat /etc/corosync/service.d/pacemaker

service {
      name: pacemaker
      ver: 1
}

将Pacemaker配置文件拷贝到其它主机:

[root@P243 service.d]# cd /etc/corosync/service.d/
[root@P243 service.d]# scp pacemaker root@192.168.1.241:/etc/corosync/service.d/
[root@P243 service.d]# scp pacemaker root@192.168.1.242:/etc/corosync/service.d/

启动CoroSync和Pacemaker

添加开机自动启动服务

# chkconfig --level 35 pacemaker on
# chkconfig --level 35 corosync on

启动Corosync

在启动Corosync之前请先确认主机的防火墙规则设置对udp端口5405和5404开放. 三台主机分别启动CoroSync:

# service corosync start
Starting Corosync Cluster Engine (corosync):               [  OK  ]

检查CoroSync是否运行正确:

[root@P243 corosync]# corosync-objctl | grep members | grep ip
runtime.totem.pg.mrp.srp.members.-251549504.ip=r(0) ip(192.168.1.241) 
runtime.totem.pg.mrp.srp.members.-234772288.ip=r(0) ip(192.168.1.242) 
runtime.totem.pg.mrp.srp.members.-217995072.ip=r(0) ip(192.168.1.243)

如果看不到上面类似的结果,请确认iptables规则设置正确.可以通过日志文件/var/log/cluster/corosync.log查看更多信息.

启动Pacemaker

三台主机分别启动Pacemaker:

# service pacemaker start
Starting Pacemaker Cluster Manager:                        [  OK  ]

查看集群状态:

[root@P243 ~]# crm status
Last updated: Mon Mar 18 01:02:27 2013
Last change: Mon Mar 18 01:02:19 2013 via crmd on P241
Stack: classic openais (with plugin)
Current DC: P241 - partition with quorum
Version: 1.1.8-7.el6-394e906
3 Nodes configured, 3 expected votes
0 Resources configured.


Online: [ P241 P242 P243 ]