keepalived+LVS+apache双机搭建高可用负载均衡web服务
编辑/etc/keepalived/keepalived.conf# vi /etc/keepalived/keepalived.conf ，添加如下内容
! Configuration File for keepalived
global_defs {
notification_email {
admin@example.com
}
notification_email_from admin@example.com
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id linux01
}
vrrp_instance VI_1 { #定义一个实例
state BACKUP #设置为backup，然后通过priority控制哪台提升为主
interface eth0
virtual_router_id 51
priority 100
nopreempt #在priority高的这台设置这个参数，方便当主恢复后
advert_int 1 #可以自动接管
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.211.110 dev eth0 label eth0:0 #这里使用label标签启用eth0:0
}
}
virtual_server 192.168.211.110 80 { #这里往下是定义LVS
delay_loop 6
lb_algo rr
lb_kind DR
nat_mask 255.255.255.0
protocol TCP
real_server 127.0.0.1 80 { #其中一台是本地web服务
weight 1
TCP_CHECK {
connect_timeout 3
}
}
real_server 192.168.211.129 80 { #另一台的web服务
weight 1
TCP_CHECK {
connect_timeout 3
}
}
}
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