keepliave配置

来源：互联网发布：ubuntu lts 编辑：程序博客网时间：2024/05/18 00:03

VIP的飘动可以为我们解决很多问题，以前我试过使用ifup/ifdown的方式控制网卡的up/down来实现，这种方式有个小问题，就是每次VIP飘动之后都要等上几十秒才能生效，感觉时间比较长，而且还要配合一些逻辑脚本才能很好地工作，有没有更好的方法呢？当然有，这就是本文的主角——keepalived。

安装很简单：

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tar zxvf keepalived-1.1.20.tar.gz 
cd keepalived-1.1.20
./configure --prefix=/
make
make install

如果出错有可能缺少以下两个包

yum -y install openssl-devel
yum install popt-devel -y

复制文件到系统中

#cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
#cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/
#mkdir /etc/keepalived
#cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/
#cp /usr/local/sbin/keepalived /usr/sbin/

# chmod +x /etc/init.d/keepalived

# chkconfig --add /etc/init.d/keepalived

修改一下 /etc/keepalived/keepalived.conf 这个配置文件就可以用了，以下是我的环境，192.168.10.141和192.168.10.142是两个VIP，可以在两台服务器之间飘动：

主机的配置：

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global_defs {
   notification_email {
     failover@firewall.loc
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.0.48
   smtp_connect_timeout 10
   router_id nginx
}
 
vrrp_instance VI_141 {
    state BACKUP
    interface eth0
    virtual_router_id 141
    priority 50
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 141
    }
    virtual_ipaddress {
        192.168.10.141/26 dev eth0
    }
}
 
vrrp_instance VI_142 {
    state BACKUP
    interface eth0
    virtual_router_id 142
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 142
    }
    virtual_ipaddress {
        192.168.10.142/26 dev eth0
    }
}

备机的配置：

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global_defs {
   notification_email {
     failover@firewall.loc
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 10.168.0.48
   smtp_connect_timeout 10
   router_id nginx
}
 
vrrp_instance VI_141 {
    state BACKUP
    interface eth0
    virtual_router_id 141
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 141
    }
    virtual_ipaddress {
        192.168.10.141/26 dev eth0
    }
}
 
vrrp_instance VI_142 {
    state BACKUP
    interface eth0
    virtual_router_id 142
    priority 50
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 142
    }
    virtual_ipaddress {
        192.168.10.142/26 dev eth0
    }
}

#service keepalived start

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