lvs集群DR模式

配置LVS－DR模式

1、清除eth2的地址和LVS规则

[root@vh04 network-scripts]# cp ifcfg-eth0{,:0}

[root@vh04 network-scripts]# vim ifcfg-eth0:0

[root@vh04 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0:0

TYPE=Ethernet
BOOTPROTO=none
NAME=eth0:0
ONBOOT=yes
DEVICE=eth0:0
IPADDR=192.168.4.100
PREFIX=24

[root@vh04 ~]# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.4.4 netmask 255.255.255.0 broadcast 192.168.4.255
inet6 fe80::1ee:eef7:8d98:d473 prefixlen 64 scopeid 0x20<link>
ether 52:54:00:b3:cc:45 txqueuelen 1000 (Ethernet)
RX packets 27201 bytes 8679455 (8.2 MiB)
RX errors 0 dropped 6 overruns 0 frame 0
TX packets 24557 bytes 2194128 (2.0 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

eth0:0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.4.100 netmask 255.255.255.0 broadcast 192.168.4.255

ether 52:54:00:b3:cc:45 txqueuelen 1000 (Ethernet)

16 ifdown eth2

17 ipvsadm -D -t 201.1.1.4:80

18 ipvsadm -Ln

19 jobs

20 kill %1

21 cd /etc/sysconfig/network-scripts/

22 ls

23 cp ifcfg-eth0{,:0}

24 ls

25 vim ifcfg-eth0:0

IPADDR=192.168.4.100

PREFIX=24

3、在realserver配置vip

51 cd /etc/sysconfig/network-scripts/

[root@vh03 ~]# cat /etc/sysconfig/network-scripts/ifcfg-lo:0
DEVICE=lo:0
IPADDR=192.168.4.100
NETMASK=255.255.255.255 //注意点
NETWORK=192.168.4.100
# If you're having problems with gated making 127.0.0.0/8 a martian,
# # you can change this to something else (255.255.255.255, for example)
# BROADCAST=192.168.4.100
# ONBOOT=yes

# NAME=lo:0

[root@vh03 ~]# cat /etc/sysconfig/network-scripts/ifcfg-lo:0
DEVICE=lo:0
IPADDR=192.168.4.100
NETMASK=255.255.255.255
NETWORK=192.168.4.100
# If you're having problems with gated making 127.0.0.0/8 a martian,
# # you can change this to something else (255.255.255.255, for example)
# BROADCAST=192.168.4.100
# ONBOOT=yes
# NAME=lo:0

52 ls

53 cp ifcfg-lo{,:0}

54 vim ifcfg-lo:0

55 ifup lo:0

4、在realserver上修改内核参数，使得客户端发送到vip的请求只有调度服务器响应，realserver(web服务器)不要响应

[root@vh02~]#

[root@vh03~]#

echo"net.ipv4.conf.all.arp_ignore = 1" >> /etc/sysctl.conf

echo "net.ipv4.conf.lo.arp_ignore = 1" >> /etc/sysctl.conf

echo "net.ipv4.conf.all.arp_announce = 2" >> /etc/sysctl.conf

echo "net.ipv4.conf.lo.arp_announce = 2" >> /etc/sysctl.conf

sysctl -p

net.ipv4.conf.all.arp_ignore= 1

net.ipv4.conf.lo.arp_ignore= 1

net.ipv4.conf.all.arp_announce= 2

net.ipv4.conf.lo.arp_announce= 2

5、创建规则，默认LVS采用DR模式

[root@vh04~]# ipvsadm -A -t 192.168.4.100:80 -s lc

[root@vh04~]# ipvsadm -a -t 192.168.4.100:80 -r 192.168.4.2

[root@vh04~]# ipvsadm -a -t 192.168.4.100:80 -r 192.168.4.3

6、配置服务

[root@vh04~]#

touch/etc/sysconfig/ipvsadm

systemctl start ipvsadm

systemctlenable ipvsadm

[root@vh04~]# ipvsadm -D -t 192.168.4.100:80

[root@vh04~]# ipvsadm -Ln

IPVirtual Server version 1.2.1 (size=4096)

ProtLocalAddress:Port Scheduler Flags

->RemoteAddress:Port Forward Weight ActiveConn InActConn

[root@vh04~]# ipvsadm -A -t 192.168.4.100:80 -s lc

[root@vh04~]# ipvsadm -a -t 192.168.4.100:80 -r 192.168.4.2

[root@vh04~]# ipvsadm -a -t 192.168.4.100:80 -r 192.168.4.3

//检查

[root@rootroom9pc01cluster]# curl http://192.168.4.100

test

[root@rootroom9pc01cluster]# curl http://192.168.4.100

[root@rootroom9pc01cluster]# curl http://192.168.4.100

test

[root@rootroom9pc01cluster]#

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