HA(high available)集群配置

master配置

[root@localhost ~]# yum install -y epel-release

[root@localhost ~]# yum install -y heartbeat

[root@localhost ~]# yum install -y libnet

[root@localhost ~]# yum install -y openssh-clients

[root@localhost ~]# vi /etc/hosts  增加以下内容

192.168.10.29   master

192.168.10.39   slave

[root@localhost ~]# cp /usr/share/doc/heartbeat-3.0.4/authkeys /usr/share/doc/heartbeat-3.0.4/ha.cf /usr/share/doc/heartbeat-3.0.4/haresources /etc/ha.d/

[root@localhost ~]# vi /etc/ha.d/authkeys

auth 3

3 md5 Hello!

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

[root@localhost ~]# vi /etc/ha.d/haresources

# 这里的192.168.10.111 是vip，即虚拟ip

master 192.168.10.111/24/eth0:0 nginx

[root@localhost ~]# vi /etc/ha.d/ha.cf

# 错误日志

debugfile /var/log/ha-debug

# 正常日志

logfile /var/log/ha-log

# 日志级别

logfacility     local0

# 探测间隔时间，2秒

keepalive 2

# 30秒ping不通，认为冗机

deadtime 30

# 10秒ping不通，发出警告

warntime 10

# 预防对方在重启

initdead 60

# 监听端口

udpport 694

# slave的IP

ucast eth0 192.168.10.29

# 假设slave正在工作，master已正常启动，则自动切换回master

auto_failback on

# 节点

node    master

node    slave

# 仲裁IP

ping 192.168.10.1

respawn hacluster /usr/lib/heartbeat/ipfail

从master端拷贝配置文件到slave

[root@localhost ~]# scp /etc/ha.d/authkeys /etc/ha.d/ha.cf /etc/ha.d/haresources slave:/etc/ha.d/

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

slave配置

[root@localhost ~]# yum install -y epel-release

[root@localhost ~]# yum install -y heartbeat

[root@localhost ~]# yum install -y libnet

[root@localhost ~]# yum install -y openssh-clients

[root@localhost ~]# vi /etc/hosts  增加以下内容

192.168.10.29   master

192.168.10.39   slave

[root@localhost ~]# vi /etc/ha.d/ha.cf

# 错误日志

debugfile /var/log/ha-debug

# 正常日志

logfile /var/log/ha-log

# 日志级别

logfacility     local0

# 探测间隔时间，2秒

keepalive 2

# 30秒ping不通，认为冗机

deadtime 30

# 10秒ping不通，发出警告

warntime 10

# 预防对方在重启

initdead 60

# 监听端口

udpport 694

# master的IP

ucast eth0 192.168.10.39

# 假设slave正在工作，master已正常启动，则自动切换回master

auto_failback on

# 节点

node    master

node    slave

# 仲裁IP

ping 192.168.10.1

respawn hacluster /usr/lib/heartbeat/ipfail

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

至此，HA(high available)集群配置完毕