标签：keepalived
主：（主备配置只有两处，优先级&状态）
[root@node7_1 keepalived]# cat keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalived@localhost
smtp_server 172.0.0.1
smtp_connect_timeout 30
router_id node1
vrrp_mcast_group4 224.0.100.19
}
vrrp_instance VI_1 {
state MASTER
interface eno16777728
virtual_router_id 1
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass cb77b8da
}
virtual_ipaddress {
192.168.1.251/32 dev eno16777728 #此处写DR模型中的VIP地址
}
notify_master "/etc/keepalived/notify.sh master"
notify_backup "/etc/keepalived/notify.sh backup"
notify_fault "/etc/keepalived/notify.sh fault"
}
virtual_server 192.168.1.251 80 { #此处写DR模型中的VIP地址
delay_loop 3
lb_algo rr
lb_kind DR
protocol TCP
real_server 192.168.1.161 80 {
weight 1
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 1
nb_get_retry 3
delay_before_retry 1
}
}
real_server 192.168.1.162 80 {
weight 1
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 1
nb_get_retry 3
delay_before_retry 1
}
}
}
备：
[root@node7_1 keepalived]# cat keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalived@localhost
smtp_server 172.0.0.1
smtp_connect_timeout 30
router_id node1
vrrp_mcast_group4 224.0.100.19
}
vrrp_instance VI_1 {
state BACKUP
interface eno16777728
virtual_router_id 1
priority 10
advert_int 1
authentication {
auth_type PASS
auth_pass cb77b8da
}
virtual_ipaddress {
192.168.1.251/32 dev eno16777728 #此处写DR模型中的VIP地址
}
notify_master "/etc/keepalived/notify.sh master"
notify_backup "/etc/keepalived/notify.sh backup"
notify_fault "/etc/keepalived/notify.sh fault"
}
virtual_server 192.168.1.251 80 { #此处写DR模型中的VIP地址
delay_loop 3
lb_algo rr
lb_kind DR
protocol TCP
real_server 192.168.1.161 80 {
weight 1
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 1
nb_get_retry 3
delay_before_retry 1
}
}
real_server 192.168.1.162 80 {
weight 1
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 1
nb_get_retry 3
delay_before_retry 1
}
}
}
通知脚本：
[root@node7_1 keepalived]# cat notify.sh
#!/bin/bash
#
#
#
vip=192.168.1.251
contact=‘root@localhost‘
notify() {
mailsubject="`hostname` to be $1: $vip floating"
mailbody="`date ‘+%F %H:%M:%S‘`: vrrp transition, `hostname` changed to be $1"
echo $mailbody | mail -s "$mailsubject" $contact
}
case "$1" in
master)
notify master
# /etc/rc.d/init.d/haproxy start
exit 0
;;
backup)
notify backup
# /etc/rc.d/init.d/haproxy stop
exit 0
;;
fault)
notify fault
# /etc/rc.d/init.d/haproxy stop
exit 0
;;
*)
echo ‘Usage: `basename $0` {master|backup|fault}‘
exit 1
;;
esac
标签：keepalived
原文地址：http://ridingonhorse.blog.51cto.com/11265295/1873290
