server1：第一台节点的keepalived.conf配置. 其中VIP:192.168.20.187
[root@keepalived-node01 ~]# cat /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
kevin@bobo.com
}
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id innodb_cluster #局域网中需要共享该vip的服务器，该配置要一致
vrrp_skip_check_adv_addr
vrrp_garp_interval 0
vrrp_gna_interval 0
}
vrrp_instance VI_1 {
state MASTER #状态为master,表明 keepalived 启动后会抢占IP, 但，下面的优先级值201要高于 从库的优先级 101
interface eth0 #viP 绑定的网卡
virtual_router_id 191 #这个组队标志，同一个vrrp 下的 值一致，主从一致
priority 201 # 主库为201，高于从库101
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.20.187 #这是VIP 值
}
}
vrrp_instance VI_2 {
state BACKUP #状态为 BACKUP,表明 keepalived 启动后不抢占IP
interface eth0 #VIP 绑定的接口
virtual_router_id 193 #组队标识，同一个vrrp 下的值一致
priority 101 #设置优先级小于另一个节点的priority 上值。
advert_int 1
authentication {
auth_type PASS
auth_pass 3333
}
virtual_ipaddress {
192.168.20.189
}
}
启动keepalived
[root@keepalived-node01 ~]# /etc/init.d/keepalived start
[root@keepalived-node01 ~]# ps -ef|grep keepalived
root 13746 1 0 16:31 ? 00:00:00 /usr/sbin/keepalived -D
root 13747 13746 0 16:31 ? 00:00:00 /usr/sbin/keepalived -D
root 13748 13746 0 16:31 ? 00:00:00 /usr/sbin/keepalived -D
root 14089 13983 0 16:36 pts/1 00:00:00 grep --color=auto keepalived
启动keepalived服务后,查看ip
[root@keepalived-node01 ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 2e:ab:68:68:ee:90 brd ff:ff:ff:ff:ff:ff
inet 192.168.20.191/24 brd 192.168.20.255 scope global noprefixroute eth0
valid_lft forever preferred_lft forever
inet 192.168.20.187/32 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::2cab:68ff:fe68:ee90/64 scope link
valid_lft forever preferred_lft forever
==========================================================================================
server2：第二台节点的keepalived.conf配置. 其中VIP:192.168.20.188
[root@keepalived-node02 ~]# cat /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
kevin@bobo.com
}
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id innodb_cluster #局域网中需要共享该vip的服务器，该配置要一致
vrrp_skip_check_adv_addr
vrrp_garp_interval 0
vrrp_gna_interval 0
}
vrrp_instance VI_1 {
state MASTER #状态为master,表明 keepalived 启动后会抢占IP, 但，下面的优先级值201要高于 从库的优先级 101
interface eth0 #viP 绑定的网卡
virtual_router_id 192 #这个组队标志，同一个vrrp 下的 值一致，主从一致
priority 201 # 主库为201，高于从库101
advert_int 1
authentication {
auth_type PASS
auth_pass 2222
}
virtual_ipaddress {
192.168.20.188 #这是VIP 值
}
}
vrrp_instance VI_2 {
state BACKUP #状态为 BACKUP,表明 keepalived 启动后不抢占IP
interface eth0 #VIP 绑定的接口
virtual_router_id 191 #组队标识，同一个vrrp 下的值一致
priority 101 #设置优先级小于另一个节点的priority 上值。
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.20.187
}
}
启动keepalived
[root@keepalived-node02 ~]# /etc/init.d/keepalived start
[root@keepalived-node02 ~]# ps -ef|grep keepalived
root 13327 1 0 16:32 ? 00:00:00 /usr/sbin/keepalived -D
root 13328 13327 0 16:32 ? 00:00:00 /usr/sbin/keepalived -D
root 13329 13327 0 16:32 ? 00:00:00 /usr/sbin/keepalived -D
root 13570 13529 0 16:39 pts/1 00:00:00 grep --color=auto keepalived
启动keepalived服务后查看ip
[root@keepalived-node02 ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 76:6d:74:97:03:15 brd ff:ff:ff:ff:ff:ff
inet 192.168.20.192/24 brd 192.168.20.255 scope global noprefixroute eth0
valid_lft forever preferred_lft forever
inet 192.168.20.188/32 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::746d:74ff:fe97:315/64 scope link
valid_lft forever preferred_lft forever
==========================================================================================
server3：第三台节点的keepalived.conf配置. 其中VIP:192.168.20.189
[root@keepalived-node03 ~]# cat /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
kevin@bobo.com
}
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id innodb_cluster #和server1 一致全局唯一
vrrp_skip_check_adv_addr
# vrrp_strict
vrrp_garp_interval 0
vrrp_gna_interval 0
}
vrrp_instance VI_1 {
state BACKUP #主是master,从就是backup
interface eth0
virtual_router_id 192 # 组队标识，同一个vrrp 下一致
priority 101 #优先级也变小
advert_int 1
authentication {
auth_type PASS
auth_pass 2222
}
virtual_ipaddress {
192.168.20.188
}
}
vrrp_instance VI_2 {
state MASTER #主变成MASTER
interface eth0 #绑定网卡
virtual_router_id 193 #组队标志，同一个vip 下一致
priority 201 #优先级提升
advert_int 1
authentication {
auth_type PASS
auth_pass 3333
}
virtual_ipaddress {
192.168.20.189
}
}
启动keepalived
[root@keepalived-node03 ~]# /etc/init.d/keepalived start
[root@keepalived-node03 ~]# ps -ef|grep keepalived
root 13134 1 0 16:33 ? 00:00:00 /usr/sbin/keepalived -D
root 13135 13134 0 16:33 ? 00:00:00 /usr/sbin/keepalived -D
root 13136 13134 0 16:33 ? 00:00:00 /usr/sbin/keepalived -D
root 13526 13460 0 16:41 pts/1 00:00:00 grep --color=auto keepalived
启动keepalived服务后查看ip
[root@keepalived-node03 ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 22:ee:46:41:f0:e6 brd ff:ff:ff:ff:ff:ff
inet 192.168.20.193/24 brd 192.168.20.255 scope global noprefixroute eth0
valid_lft forever preferred_lft forever
inet 192.168.20.189/32 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::20ee:46ff:fe41:f0e6/64 scope link
valid_lft forever preferred_lft forever
温馨提示:
如上,keepalived.conf配置后,重启keepalived服务,重启成功并且vip地址已经有了,但是死活ping不通vip地址!!
这是因为keepalived.conf文件中的vrrp_strict参数引起的,将该参数注释掉就可以了!!!
vrrp_strict 表示严格执行VRRP协议规范，此模式不支持节点单播
VIP地址ping不通,需要注释vrrp_strict参数配置即可!
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