LVS环境配合Keepalived部署
1.环境说明六台服务器，两台作为director，四台作为两组real server。
director为
10.8.80.110（keepalived master）和10.8.80.111（keepalived backup），
vip：10.8.80.112。
两组real server
为10.8.80.101:80,10.8.80.102:80和10.8.80.105:8889,10.8.80.106:8889
2.安装和配置LVS
两台director上安装ipvadm
yum install -y ipvsadm
两台director上编写DR模式脚本
vim /usr/local/sbin/lvs_dr.sh
添加内容
#! /bin/bash
echo 1 > /proc/sys/net/ipv4/ip_forward
ipv=/sbin/ipvsadm
vip=10.8.80.112
rs1=10.8.80.101
rs2=10.8.80.102
rs3=10.8.80.105
rs4=10.8.80.106
$ipv -C
$ipv -A -t $vip:80 -s rr
$ipv -a -t $vip:80 -r $rs1:80 -g -w 1
$ipv -a -t $vip:80 -r $rs2:80 -g -w 1
$ipv -A -t $vip:8889 -s rr
$ipv -a -t $vip:8889 -r $rs3:8889 -g -w 1
$ipv -a -t $vip:8889 -r $rs4:8889 -g -w 1
然后在四台real server上编写脚本
vim /usr/local/sbin/lvs_dr_rs.sh
添加内容
#! /bin/bash
vip=10.8.80.112
ifconfig lo:0 $vip broadcast $vip netmask 255.255.255.255 up
route add -host $vip lo:0
echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
3.安装Keepalived
两台director上执行
yum install -y keepalived
两台director上编辑配置文件
vim /etc/keepalived/keepalived.conf
加入配置
vrrp_instance VI_1 {
state MASTER //备上为BACKUP
interface eno16777984 //备的网卡名
#lvs_sync_daemon_inteface eno16777984
virtual_router_id 51
priority 100 //备为90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
10.8.80.112
}
}
virtual_server 10.8.80.112 80 {
delay_loop 3
lb_algo wlc
lb_kind DR
nat_mask 255.255.255.0
persistence_timeout 60
protocol TCP
real_server 10.8.80.101 80 {
weight 100
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 10.8.80.102 80 {
weight 100
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}
virtual_server 10.8.80.112 8889 {
delay_loop 3
lb_algo wlc
lb_kind DR
nat_mask 255.255.255.0
persistence_timeout 60
protocol TCP
real_server 10.8.80.105 8889 {
weight 100
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 8889
}
}
real_server 10.8.80.106 8889 {
weight 100
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 8889
}
}
}
4.启动LVS+Keepalived
两台director执行脚本
1
sh /usr/local/sbin/lvs_dr.sh
两台director启动keepalived
1
systemctl start keepalived
四台real server执行脚本
1
sh /usr/local/sbin/lvs_dr_rs.sh
LVS+Keepalived部署完成
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