cd /opt
yum -y install gcc openssl-devel popt-devel psmisc
tar -zxvf keepalived-2.2.7.tar.gz
cd keepalived-2.2.7
./configure --prefix=/opt/keepalived-2.2.7
make && make install
2.将文件复制到对应目录下mkdir /etc/keepalived
cp keepalived/etc/keepalived/keepalived.conf.sample /etc/keepalived/keepalived.conf
cp keepalived/etc/init.d/keepalived /etc/init.d/
cp keepalived/etc/sysconfig/keepalived /etc/sysconfig/
cp bin/keepalived /usr/sbin/
3.新建/etc/keepalived/shutdown.sh文件，内容为：vi /etc/keepalived/shutdown.sh
#!/bin/bash
#该脚本是在mysql服务出现异常时，将keepalived应用停止，从而使虚拟vip主机自动连接到另一台mysql上
killall keepalived
4. 使用ifconfig命令查看下网卡名称5. 修改主服务器/etc/keepalived/keepalived.conf配置文件，内容如下：! Configuration File for keepalived
global_defs {
notification_email {
}
smtp_server 192.168.46.1
smtp_connect_timeout 30
router_id LVS_MASTER
vrrp_skip_check_adv_addr
vrrp_strict
vrrp_garp_interval 0
vrrp_gna_interval 0
}
vrrp_instance VI_1 {
state MASTER
#interface为刚才查到的本机网卡名称
interface ens33
#同一网段中同一组virtual_router_id值相同。不同组virtual_router_id值唯一。
#如server-1、server-2为一组，virtual_router_id=51
#server-3、server-4为一组，则virtual_router_id不能为51
virtual_router_id 51
#字数越大，优先级越高，master必须大于backup
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
#该ip为虚拟出来的vip地址
192.168.46.200
}
}
#配置virtual_server ip为上面配置的虚拟vip地址 端口为mysql的端口
virtual_server 192.168.46.200 3306 {
delay_loop 6
lb_algo rr
lb_kind NAT
persistence_timeout 50
protocol TCP
#real_server 该配置为实际物理机ip地址 以及实际物理机mysql端口
real_server 192.168.46.146 3306 {
#当该ip 端口连接异常时，执行该脚本
notify_down /etc/keepalived/shutdow.sh
TCP_CHECK {
#实际物理机ip地址
connect_ip 192.168.46.146
#实际物理机port端口
connect_port 3306
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
6. 修改从服务器/etc/keepalived/keepalived.conf配置文件，详细内容如下：! Configuration File for keepalived
global_defs {
notification_email {
}
smtp_server 192.168.46.1
smtp_connect_timeout 30
router_id LVS_MASTER
vrrp_skip_check_adv_addr
vrrp_strict
vrrp_garp_interval 0
vrrp_gna_interval 0
}
vrrp_instance VI_1 {
state BACKUP
#interface为刚才查到的本机网卡名称
interface ens33
#同一网段中同一组virtual_router_id值相同。不同组virtual_router_id值唯一。
#如server-1、server-2为一组，virtual_router_id=51
#server-3、server-4为一组，则virtual_router_id不能为51
virtual_router_id 51
#字数越大，优先级越高，master必须大于backup
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
#该ip为虚拟出来的vip地址
192.168.46.200
}
}
#配置virtual_server ip为上面配置的虚拟vip地址 端口为mysql的端口
virtual_server 192.168.46.200 3306 {
delay_loop 6
lb_algo rr
lb_kind NAT
persistence_timeout 50
protocol TCP
#real_server 该配置为实际物理机ip地址 以及实际物理机mysql端口
real_server 192.168.46.147 3306 {
#当该ip 端口连接异常时，执行该脚本
notify_down /etc/keepalived/shutdow.sh
TCP_CHECK {
#实际物理机ip地址
connect_ip 192.168.46.147
#实际物理机port端口
connect_port 3306
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
7. 将主从服务器keepalived加入开机自启，并启动服务，查看服务状态systemctl enable keepalived
systemctl start keepalived
systemctl status keepalived
8. 通过虚拟出来的VIP服务器地址查看MySQL数据库
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发表于 2023-5-6 16:00
技术专家2级 
