主keepalived设置
#安装keepalived
[root@localhost ~]# yum -y install keepalived
#安装nginx
[root@localhost ~]# yum -y install nginx
——————————————————————————————————
#keepalived配置文件
[root@localhost ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived global_defs {
notification_email {
[email protected]
[email protected]
[email protected]
}
notification_email_from [email protected]
smtp_server 192.168.200.1
smtp_connect_timeout
router_id LVS_DEVEL
vrrp_skip_check_adv_addr
vrrp_strict
vrrp_garp_interval
vrrp_gna_interval
} vrrp_script check_nginx { #引入脚本文件
script "/shell/nginx_check.sh"
interval
weight -
} vrrp_instance VI_1 {
state MASTER #主
interface eno16777728 #心跳网卡
virtual_router_id
priority #优先级
advert_int
authentication {
auth_type PASS
auth_pass
}
virtual_ipaddress {
192.168.200.201
}
track_script {
check_nginx #引用脚本
}
}
______________________________________________________
#装备测试文件
[root@localhost ~]# echo "" > /usr/share/nginx/html/index.html
从keepalived设置
#安装keepalived
[root@localhost ~]# yum -y install keepalived
#安装nginx
[root@localhost ~]# yum -y install nginx
______________________________________________________________
#keepalived配置文件
[root@localhost ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived global_defs {
notification_email {
[email protected]
[email protected]
[email protected]
}
notification_email_from [email protected]
smtp_server 192.168.200.1
smtp_connect_timeout
router_id LVS_DEVEL
vrrp_skip_check_adv_addr
vrrp_strict
vrrp_garp_interval
vrrp_gna_interval
} vrrp_script check_nginx {
script "/shell/nginx_check.sh"
interval
weight -
} vrrp_instance VI_1 {
state BACKUP
interface eno16777728
virtual_router_id
priority
advert_int
authentication {
auth_type PASS
auth_pass
}
virtual_ipaddress {
192.168.200.201
}
track_script {
check_nginx
}
} ———————————————————————————————————
#准备测试文件
[root@localhost ~]# echo "" > /usr/share/nginx/html/index.html
三、测试
主服务器工作时
从服务器工作时
四、nginx_check.sh shell文件，配置为周期性任务
#!/bin/bash
count="$(ps -C nginx --no-header|wc -l)" if [ $count -eq ];then
systemctl restart nginx
sleep
if [ ps -c nginx --no-header|wc -l -eq ];then
systemctl stop keepalived
fi
fi
#给脚本加执行权限
chmod +x /shell/nginx_check.sh