VM下LINUX+Heartbeat 通过心跳实现双机高可用(2)

这里只设置VIP和开启apache

master 192.168.1.200 httpd

第二：在备用节点上的安装与配置

1、修改主机名

[root@localhost ~]# vi /etc/sysconfig/network

NETWORKING=yes

NETWORKING_IPV6=no

HOSTNAME=backup

[root@localhost ~]# vi /etc/hosts

127.0.0.1 localhost.localdomain localhost

::1 localhost6.localdomain6 localhost

192.168.1.195 master

192.168.1.196 backup

[root@localhost ~]# reboot

[root@backup ~]# uname -n

backup

2、下载、安装软件包：

[root@backup~]#wget http://zid-luxinst.uibk.ac.at/linux/rpm2html/centos/5/extras/i386/RPMS/heartbeat-2.1.3-3.el5.centos.i386.rpm

[root@backup~]#wget http://zid-luxinst.uibk.ac.at/linux/rpm2html/centos/5/extras/i386/RPMS/ heartbeat-pils-2.1.3-3.el5.centos.i386.rpm

[root@backup~]#wget http://zid-luxinst.uibk.ac.at/linux/rpm2html/centos/5/extras/i386/RPMS/ heartbeat-stonith-2.1.3-3.el5.centos.i386.rpm

注意安装顺序不可以颠倒（颠倒了也安装不成功）

[root@backup ~]# rpm -ivh heartbeat-pils-2.1.3-3.el5.centos.i386.rpm

[root@backup ~]# rpm -ivh heartbeat-stonith-2.1.3-3.el5.centos.i386.rpm

[root@backup ~]# rpm -ivh heartbeat-2.1.3-3.el5.centos.i386.rpm

3、配置的部分

[root@backup ~]# cp /usr/share/doc/heartbeat-2.1.3/ha.cf /etc/ha.d/ //主配置文件

[root@backup ~]# cp /usr/share/doc/heartbeat-2.1.3/authkeys /etc/ha.d/ //认证文件

[root@backup ~]# cp /usr/share/doc/heartbeat-2.1.3/haresources /etc/ha.d/ //资源管理的配置

[root@backup ~]# chmod 600 /etc/ha.d/authkeys

[root@backup ~]# vi /etc/ha.d/ha.cf //修改以下几处（这里没考虑优化，只是简单的功能实现）

logfile /var/log/ha-log

keepalive 2

deadtime 30

warntime 10

initdead 120

udpport 694

bcast eth1 # Linux //心跳网卡

ucast eth1 10.0.0.3 //心跳网卡连接对方心跳地址

auto_failback on

node master

node backup

ping 192.168.1.1 //检测全网是否连通

[root@backup ~]# vi /etc/ha.d/authkeys //采用crc认证（对系统资源要求最小）

auth 1

1 crc

[root@backup ~]# vi /etc/ha.d/haresources //这里只设置VIP和开启apache

master 192.168.1.200 httpd

第三：测试的部分

测试前的准备

[root@backup ~]# iptables -F

[root@backup ~]# iptables -F -t nat

[root@master ~]# iptables -F

[root@master ~]# iptables -F -t na

[root@backup ~]# echo "This 192.168.1.196 backup web">/var/www/html/index.html

[root@master ~]# echo "This 192.168.1.195 master web">/var/www/html/index.html

[root@master ~]# /etc/init.d/httpd stop

[root@backup ~]# /etc/init.d/httpd stop

开始测试

1、双节点均开启heartbeta

[root@master ~]# /etc/init.d/heartbeat start

logd is already running

Starting High-Availability services:

2011/10/25_10:21:23 INFO: Resource is stopped

[ OK ]

[root@master ~]# /etc/init.d/httpd status

httpd (pid 5577) is running...

[root@backup ~]# /etc/init.d/heartbeat start

Starting High-Availability services:

2011/11/03_18:12:44 INFO: Resource is stopped

[ OK ]

[root@backup ~]# /etc/init.d/httpd status

httpd is stopped

[root@master ~]# ifconfig //VIP仅存在于主节点的eth0上，为eth0:0

eth0:0 Link encap:Ethernet HWaddr 00:0C:29:90:42:78

inet addr:192.168.1.200 Bcast:192.168.1.255 Mask:255.255.255.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

Interrupt:169 Base address:0x2000 link/sit 0.0.0.0 brd 0.0.0.0

2、仅关闭主节点的heartbeta

[root@master ~]# /etc/init.d/heartbeat stop

Stopping High-Availability services:

[ OK ]

[root@backup ~]# ifconfig

eth0:0 Link encap:Ethernet HWaddr 00:0C:29:09:22:5D

inet addr:192.168.1.200 Bcast:192.168.1.255 Mask:255.255.255.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

Interrupt:169 Base address:0x2000

3、再次开启主节点的heartbeat

[root@master ~]# /etc/init.d/heartbeat start

Starting High-Availability services:

2011/10/25_10:29:50 INFO: Resource is stopped

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