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keepalived非抢占模式，大致有三个地方需要配置
1，state BACKUP
2，主备的priority 的值不同
3，nopreempt
我的配置，分别在两台机器上配置
主机1:172.26.0.66
主机2:172.26.0.111
VIP：172.26.0.109
主机1的keepalived.conf配置
! Configuration File for keepalived
global_defs {
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_DEVEL
vrrp_skip_check_adv_addr
#vrrp_strict
vrrp_garp_interval 0
vrrp_gna_interval 0
}
#vrrp_script check_run {
# script "/usr/cloudland/keepalived/keepalived_check.sh"
# script "/usr/cloudland/keepalived/sync_data.sh"
# interval 3
#}
vrrp_instance VI_1 {
state BACKUP
interface ens192
virtual_router_id 109
priority 100
nopreempt
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
172.26.0.109/24 dev ens192
}
#track_script {
# check_run
# }
notify_master "/usr/cloudland/keepalived/update_companyId.sh"
notify_backup "/usr/cloudland/keepalived/master_backup.sh backup"
}
virtual_server 172.26.0.109 3306 {
delay_loop 6
lb_algo wrr
lb_kind Dr
persistence_timeout 60
protocol UDP
real_server 172.26.0.66 3306 {
weight 3
#notify_down /root/shutdown.sh
UDP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 3306
}
}
}
主机2的keepalived配置
! Configuration File for keepalived
global_defs {
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_DEVEL
vrrp_skip_check_adv_addr
#vrrp_strict
vrrp_garp_interval 0
vrrp_gna_interval 0
}
#vrrp_script check_run {
# script "/usr/cloudland/keepalived/keepalived_check.sh"
# script "/usr/cloudland/keepalived/sync_data.sh"
# interval 3
#}
vrrp_instance VI_1 {
state BACKUP
interface ens192
virtual_router_id 109
priority 90
nopreempt
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
172.26.0.109/24 dev ens192
}
#track_script {
# check_run
# }
notify_master "/usr/cloudland/keepalived/update_companyId.sh"
notify_backup "/usr/cloudland/keepalived/master_backup.sh backup"
}
virtual_server 172.26.0.109 3306 {
delay_loop 6
lb_algo wrr
lb_kind Dr
persistence_timeout 60
protocol TCP
real_server 172.26.0.111 3306 {
weight 3
#notify_down /root/shutdown.sh
TCP_CHECK {
bindto 172.26.0.66
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 3306
}
}
}
配置好之后，实际测试的时候发现，通过断网线和kill掉keepalived服务，都可以实现切换，但是通过systemctl stop network就无法实现vip漂移
通过systemctl stop network停用网络服务是不能转移的，尽管这时候你ping不通，你会发现在keepalived的服务还在，拔掉网线或者systemctl stop keepalived
都可以转移，但是不能通过system stop network使VIP漂移，具体原理，应该是systemctl stop network只是停用了上层的网络服务吧，但是底层物理连接
还可以连接吧，而vrrp协议正是基于这种物理的真实连接，所以keepalived应该不能监测网卡故障，你可以写一个监控脚本，一定时间内，ping不通对端的IP，就
把自己的keepalived杀死 | 
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