部署两台keepalived, master和backup, 两台realserver, 一台sorry_server. 操作系统为centos6.8
ip: master: 192.168.254.129
back: 192.168.254.131
real_server: 192.168.254.128
real_server: 192.168.254.130
sorry_server: 192.168.254.132
1.安装master的keepalived
1.1.下载keepalived安装包keepalived-1.2.15.tar.gz, 下载地址:http://www.keepalived.org/download.html
1.2 安装之前先装工具包:yum install curl gcc openssl-devel libnl3-devel net-snmp-devel
1.3 执行以下命令:
tar -xzvf keepalived-1.2.15.tar.gz
cd keepalived-1.2.15
mkdir /usr/local/keepalived-1.2.15
./configure --prefix=/usr/local/keepalived-1.2.15
make
mak install
1.4 拷贝各文件至相应目录
mv /usr/local/keepalived-1.2.15/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
mv /usr/local/keepalived-1.2.15/etc/sysconfig/keepalived /etc/sysconfig/
mv /usr/local/keepalived-1.2.15/sbin/keepalived /usr/sbin/
1.5 创建目录: /etc/keepalived, 将/usr/local/keepalived-1.2.15/etc/keepalived/keepalived.conf放至此目录,keepalived.conf内容如下:
! 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
# lvs_id LVS_MAIN
#}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 2
advert_int 1
authentication {
auth_type PASS
auth_pass kevin
}
virtual_ipaddress {
192.168.254.80
}
}
virtual_server 192.168.254.80 8080 {
delay_loop 6
lb_algo wrr
lb_kind DR
persistence_timeout 50
protocol TCP
sorry_server 192.168.254.129 8080
real_server 192.168.254.128 8080 {
weight 2
HTTP_GET {
url {
path /heartcheck
status_code 200
}
connect_timeout 6
retry 3
delay_before_retry 3
}
}
real_server 192.168.254.130 8080 {
weight 1
HTTP_GET {
url {
path /heartcheck
status_code 200
}
connect_timeout 6
retry 3
delay_before_retry 3
}
}
}
1.6 启动keepalived: service keepalived start
2.安装backup的keepalived, 步骤同1. keepalived.conf配置文件中,修改以下内容:
state BACKUP
priority 1
3.启动backup的keepalived: service keepalived start
4. 安装real_server: 在/etc/init.d目录下增加lvsrs文件,内容如下:
#!/bin/bash
#description : Start Real Server
VIP=192.168.254.80
. /etc/rc.d/init.d/functions
case "$1" in
start)
echo " Start LVS of Real Server "
/sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up
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
;;
stop)
/sbin/ifconfig lo:0 down
echo "close LVS Director server"
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
esac
5. 启动各real_server, 增加VIP: service lvsrs start
6. 注意sorry_server所在机器,配置同real_server, 也需要启动: service lvsrs start
备注:各配置文件在附件中.
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