1.前提:先实现双机主备
2.修改nginx-master的配置文件,复制VI_1的部分,并着重修改紫色部分
! Configuration File for keepalived
global_defs {
router_id nginx1
}
vrrp_script check_status {
script "/etc/keepalived/check_nginx_status.sh"
interval 2
weight 10
}
vrrp_instance VI_1 {
state MASTER
interface ens33
virtual_router_id 61
priority 100
#主备之间同步检查的时间间隔,默认1s
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.26.102
}
track_script {
check_status
}
}
vrrp_instance VI_2 {
state BACKUP
interface ens33
virtual_router_id 62
priority 50
#主备之间同步检查的时间间隔,默认1s
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.26.103
}
track_script {
check_status
}
}
3.修改完成后,进行重启
systemctl restart keepalived
#查看ip,看ens33网卡上是否绑一个vip192.168.26.102,绑一个正常
ip addr
4.修改nginx-backup,复制VI_1的部分,并着重修改紫色部分
! Configuration File for keepalived
global_defs {
router_id nginx2
}
vrrp_script check_nginx_status {
script "/etc/keepalived/check_nginx_status.sh"
# 每隔2秒运行一下上一行脚本
interval 2
# 如果脚本运行成功,则升级权重+10
weight 10
}
vrrp_instance VI_1 {
state BACKUP
interface ens33
virtual_router_id 61
priority 50
#主备之间同步检查的时间间隔,默认1s
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
#追踪nginx脚本
check_nginx_status
}
virtual_ipaddress {
192.168.26.102
}
}
vrrp_instance VI_2 {
state MASTER
interface ens33
virtual_router_id 62
priority 100
#主备之间同步检查的时间间隔,默认1s
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
#追踪nginx脚本
check_nginx_status
}
virtual_ipaddress {
192.168.26.103
}
}
5.修改完成后,进行重启
systemctl restart keepalived
#查看ip,看ens33网卡上是否绑一个vip192.168.26.103,绑一个正常
ip addr