Shulou(Shulou.com)06/02 Report--

Premise: lvs+nginx+tomcat_1 and tomcat_2+redis environments have been installed, please refer to (slight changes, for example, tomcat_1 and tomcat_2 are installed on two machines, instead of multiple instances on a single machine, you can change them slightly) http://blog.csdn.net/zhang123456456/article/details/73437710

Environment description: in order to save resources, there are multiple services configured on the same virtual machine, due to different ports, does not affect the use.

Os: centos 6.7

Lvs: 10.219.24.23

Nginx: 10.219.24.26:80

Tomcat_1: 10.219.24.21:80

Tomcat_2: 10.219.24.23:80

Redis: 10.219.24.23:6379

After the installation and configuration of all the above environments, the lvs dr mode is finally configured. Only the last lvs dr configuration record is recorded here.

1.-- ditecter server (front-end server) bind vip

[root@mysql03 ~] # ifconfig eth0:1 10.219.24.66 Universe 8 up

[root@mysql03] # route add-host 10.219.24.66 dev eth0:1

[root@mysql03 ~] # ifconfig

Eth0 Link encap:Ethernet HWaddr 00:0C:29:79:F4:02

Inet addr:10.219.24.26 Bcast:10.255.255.255 Mask:255.0.0.0

Inet6 addr: fe80::20c:29ff:fe79:f402/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:11815 errors:0 dropped:0 overruns:0 frame:0

TX packets:15001 errors:0 dropped:0 overruns:0 carrier:0

Collisions:0 txqueuelen:1000

RX bytes:1170750 (1.1 MiB) TX bytes:3612189 (3.4 MiB)

Eth0:1 Link encap:Ethernet HWaddr 00:0C:29:79:F4:02

Inet addr:10.219.24.66 Bcast:10.255.255.255 Mask:255.0.0.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

2.-- real server modifies kernel parameters to hide real server's vip (all real server servers need to operate)

[root@mysql ~] # echo "1" > / proc/sys/net/ipv4/conf/lo/arp_ignore

[root@mysql ~] # echo "1" > / proc/sys/net/ipv4/conf/all/arp_ignore

[root@mysql ~] # echo "2" > / proc/sys/net/ipv4/conf/all/arp_announce

[root@mysql ~] # echo "2" > / proc/sys/net/ipv4/conf/lo/arp_announce

-- real server binds vip (all real server servers need to operate)

[root@mysql ~] # ifconfig lo:1 10.219.24.66 netmask 255.255.255.255 broadcast 10.255.255.255 up

[root@mysql] # route add-host 10.219.24.66 dev lo:1

3. Add a cluster service to the lvs server

Ipvsadm-A-t 10.219.24.66 80-s rr

-- add Real Server to the specified cluster service

Ipvsadm-a-t 10.219.24.66 VR 80-r 10.219.24.21 VR 80-g

Ipvsadm-a-t 10.219.24.66 purl 80-r 10.219.24.23 purl 80-g

Note:-r: specify RS, which can contain {IP [: port]}. Only LVS types that support port mapping (NAT) allow different ports to be used here than in the cluster service.

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