1.keepalive原理图
2.keepalive下载
官方下载路径www.keepalived.org
3.keepalive安装
下载后是未编译的源码<spanlang="en-us>">
需要编译安装
Unzip keepalived-1.3.6.zip Cd keepalived-1.3.6 ./configure Make all Make install
4.keepalive配置
创建配置目录
Mkdir -p /etc/<wiz_tmp_highlight_tag class="cm-searching" style="background: yellow;">keepalived
编辑<wiz_tmp_highlight_tag class="cm-searching" style="background: yellow;">keepalived.conf文件
! Configuration File for keepalived global_defs { router_id router2 } vrrp_instance VI_2 { state BACKUP interface eth1 virtual_router_id 188 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 2222 } virtual_ipaddress { 134.64.14.175 } }
! Configuration File for keepalived global_defs { router_id router1 } vrrp_instance VI_2 { state BACKUP interface eth1 virtual_router_id 188 priority 101 nopreempt advert_int 1 authentication { auth_type PASS auth_pass 2222 } virtual_ipaddress { 134.64.14.175 #vip } }
5.keepalive启动
/usr/local/sbin/keepalived -f /etc/keepalived/keepalived.conf
keepalived启动后会有三个进程
父进程：内存管理，子进程管理等等
子进程：VRRP子进程
子进程：healthchecker子进程
6.加入系统自启动
cp /usr/local/sbin/keepalived /etc/rc.d/init.d/ cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/ cp /usr/local/sbin/keepalived /usr/sbin/ vi /etc/rc.local /etc/init.d/keepalived start
7.重启验证ip切换情况
8.问题解决
在配置过程中遇到一个报错，vip拉不起来
Jan 16 20:04:23 ty14165 Keepalived_vrrp[15067]: VRRP_Instance(VI_2) ignoring received advertisment... Jan 16 20:04:24 ty14165 Keepalived_vrrp[15067]: (VI_2): ip address associated with VRID 88 not present in MASTER advert : 134.64.14.175 Jan 16 20:04:24 ty14165 Keepalived_vrrp[15067]: bogus VRRP packet received on eth1 !!!
问题原因是virtual_router_id 在同一网络中不同的集群，该参数值不能一致，必须修改