CentOS 7 上配置LVS Keepalived ipvsadm
一、部署环境 keepalived:10.10.10.30(CentOS 7) lvs1:10.10.10.140(CentOS 6.4) lvs2:10.10.10.150(CentOS 6.4)
二、在lvs1:10.10.10.140上配置 [root@LVS1 ~]# yum install -y httpd [root@LVS1 ~]# /etc/init.d/httpd start [root@LVS1 ~]# cd /var/www/html/ [root@LVS1 html]# echo "ok" > keep.html [root@LVS1 ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 HWADDR=00:0C:29:15:B7:DC TYPE=Ethernet UUID=93f4695a-8641-4360-9fce-5e3af0e32fc9 ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=static IPADDR=10.10.10.140 NETMASK=255.255.255.0 GATEWAY=10.10.10.30 [root@LVS1 ~]#/etc/init.d/network restart [root@LVS1 ~]#/sbin/ifconfig eth0:0 10.10.10.140 broadcast 10.10.10.255 netmask 255.255.255.255 up
三、在lvs2:10.10.10.150上配置 [root@LVS2 ~]# yum install -y httpd [root@LVS2 ~]# /etc/init.d/httpd start [root@LVS2 ~]# cd /var/www/html/ [root@LVS2 html]# echo "ok" > keep.html [root@LVS2 ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 HWADDR=00:0C:29:0D:33:AC TYPE=Ethernet UUID=e04f57dc-ef9d-4563-bfa4-9c8c1e8fc870 ONBOOT=yes NM_CONTROLLED=no BOOTPROTO=static IPADDR=10.10.10.150 NETMASK=255.255.255.0 GATEWAY=10.10.10.30 [root@LVS2 ~]#/etc/init.d/network restart [root@LVS2 ~]#/sbin/ifconfig eth0:0 10.10.10.140 broadcast 10.10.10.255 netmask 255.255.255.255 up
四、在keepalived:10.10.10.30上配置 [root@KEEP ~]# vim /etc/sysconfig/network-scripts/ifcfg-eno33554984 HWADDR=00:0C:29:DC:FE:1B TYPE=Ethernet BOOTPROTO=static DEFROUTE=yes PEERDNS=yes PEERROUTES=yes IPV4_FAILURE_FATAL=no #IPV6INIT=yes #IPV6_AUTOCONF=yes #IPV6_DEFROUTE=yes #IPV6_PEERDNS=yes #IPV6_PEERROUTES=yes #IPV6_FAILURE_FATAL=no NAME=eno33554984 #UUID=56cae8b8-235f-471d-9051-2508ee149e48 ONBOOT=yes NM_CONTROLLED=no IPADDR=10.10.10.30 NETMASK=255.255.255.0 [root@KEEP ~]# /etc/init.d/network restart
[root@KEEP ~]# cd /data/keepalived/ [root@KEEP keepalived]# tar zxvf keepalived-1.2.12.tar.gz [root@KEEP keepalived]# cd keepalived-1.2.12/ [root@KEEP keepalived-1.2.12]# ./configure --prefix=/usr/local/keepalived [root@KEEP keepalived-1.2.12]# make [root@KEEP keepalived-1.2.12]# make install [root@KEEP keepalived-1.2.2]# ln -s /usr/local/keepalived/etc/keepalived/ /etc/ [root@KEEP keepalived-1.2.2]# ln -s /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/ [root@KEEP keepalived-1.2.2]# ln -s /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/ [root@KEEP keepalived-1.2.2]# ln -s /usr/local/keepalived/sbin/keepalived /usr/sbin/ [root@KEEP keepalived-1.2.12]# cd
##keepalived健康检查 HTTP_GET [root@KEEP ~]# /usr/local/keepalived/bin/genhash -s 10.10.10.140 -p 80 -u /keep.html MD5SUM = eff5bc1ef8ec9d03e640fc4370f5eacd
[root@KEEP ~]# /usr/local/keepalived/bin/genhash -s 10.10.10.150 -p 80 -u /keep.html MD5SUM = eff5bc1ef8ec9d03e640fc4370f5eacd
[root@KEEP ~]# vim /etc/keepalived/keepalived.conf ! Configuration File for keepalived global_defs { router_id LVS_DEVEL }
vrrp_instance VI_1 { state MASTER interface eno33554984 virtual_router_id 51 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 10.10.10.250 } }
virtual_server 10.10.10.250 80 { delay_loop 6 lb_algo wrr lb_kind DR nat_mask 255.255.255.0 persistence_timeout 50 protocol TCP
real_server 10.10.10.140 80 { weight 1 HTTP_GET { url { path /keep.html digest eff5bc1ef8ec9d03e640fc4370f5eacd } } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 }
real_server 10.10.10.150 80 { weight 1 HTTP_GET { url { path /keep.html digest eff5bc1ef8ec9d03e640fc4370f5eacd } } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } [root@KEEP ~]# /etc/init.d/keepalived restart
五、在keepalived:10.10.10.30上用ipvsadm 命令测试 [root@KEEP ~]# yum install -y ipvsadm [root@KEEP ~]# ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 10.10.10.250:80 wrr persistent 50 -> 10.10.10.140:80 Route 1 0 0 -> 10.10.10.150:80 Route 1 0 0
在10.10.10.140执行 [root@LVS1 html]# echo "" > keep.html [root@KEEP ~]# ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 10.10.10.250:80 wrr persistent 50 -> 10.10.10.150:80 Route 1 0 0
再在10.10.10.140执行 [root@LVS1 html]# echo "ok" > keep.html [root@KEEP ~]# ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 10.10.10.250:80 wrr persistent 50 -> 10.10.10.140:80 Route 1 0 0 -> 10.10.10.150:80 Route 1 0 0
