centos6.7 安装 keepalived

来源：互联网发布：mac win10自动更新编辑：程序博客网时间：2024/06/05 07:32

系统环境，请查看《virtualbox5.0.8 centos6.7 mini 安装》

初级应用场景：

两台机器：

192.168.56.10 tomcat 8080 主

192.168.56.11 tomcat 8080 备

规划：vip 192.168.56.100

两个tomcat通过keepalived相互热备

安装tomcat，请参考《centos6.7 mini 安装 tomcat8》

#两台机器都安装

yum -y install keepalived
#备份
cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak

#192.168.56.10上

vi /etc/keepalived/keepalived.conf

global_defs {
router_id NodeMaster
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.56.100/24
}

#192.168.56.11上

vi /etc/keepalived/keepalived.conf

global_defs {
router_id NodeBackup
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.56.100/24
}

#两台都启动

keepalived

#修改防火墙设置

vi /etc/sysconfig/iptables

在紧接着-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT 的下一行增加

-A INPUT -p vrrp -j ACCEPT

#测试

#修改tomcat里的测试页面打上服务器IP的标识

#可以正常访问http://192.168.56.100:8080，显示的192.168.56.10的标识

#在192.168.56.10上停用网卡

ifconfig eth0 down

#可以正常访问http://192.168.56.100:8080，显示的192.168.56.11的标识

#在192.168.56.10上启用网卡

ifconfig eth0 up

#可以正常访问http://192.168.56.100:8080，显示的192.168.56.10的标识

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