参考：haproxy+keepalived(主从模式)实现高可用环境的简单配置 https://blog.51cto.com/sf1314/2357735
主主模式就是需要两个VIP,即两个haproxy节点都同时在提供服务,
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当有一个haproxy挂掉后,它的vip资源就会漂到另一个haproxy节点上(此时它将有两个vip都在提供服务),故障转移无感知.
[root@Haproxy_Keepalived_Master ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalived@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id HAproxy237
}
vrrp_script chk_haproxy { #HAproxy 服务监控脚本
script "/etc/keepalived/check_haproxy.sh"
interval 2
weight 2
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
chk_haproxy
}
virtual_ipaddress {
182.148.15.239
}
notify_master "/etc/keepalived/clean_arp.sh 182.148.15.239"
}
vrrp_instance VI_2 {
state BACKUP
interface eth0
virtual_router_id 52
priority 99
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
182.148.15.235
}
notify_master "/etc/keepalived/clean_arp.sh 182.148.15.235"
}
3）Haproxy_Keepalived_Backup服务器上的Keepalived配置如下：[root@Haproxy_Keepalived_Backup ~]# /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf-bak
[root@Haproxy_Keepalived_Backup ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalived@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id HAproxy236
}
vrrp_script chk_haproxy {
script "/etc/keepalived/check_haproxy.sh"
interval 2
weight 2
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 99
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
chk_haproxy
}
virtual_ipaddress {
182.148.15.239
}
notify_master "/etc/keepalived/clean_arp.sh 182.148.15.239"
}
vrrp_instance VI_2 {
state MASTER
interface eth0
virtual_router_id 52
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
182.148.15.235
}
notify_master "/etc/keepalived/clean_arp.sh 182.148.15.235"
}
新闻名称：haproxy+keepalived(主主模式)实现高可用环境的简单配置
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