Configure a simple Web lb cluster with LVs

Knowledge Reserve:

Ipvsadm:

Managing Cluster Services

Added:-a-t|u|f service-address [-S scheduler]

Clusters of-T:TCP protocols

Clusters of-U:UDP protocols

-F:FWM: Firewall tag

Service-address:ip:port

Modification:-e

Delete:-d-t|u|f service-address

Managing the RS in the Cluster service

Added:-a-t|u|f service-address-r server-address [-g|i|m] [-w weight]

-t|u|f service-address: A pre-defined Cluster service

-R server-address: The address of an RS , in the NAT model, you can use the IP: Port to implement ports mapping;

[-g|i|m]: LVs type

-g:dr

-i:tun

-m:nat

[-W Weight]: Define server weights

Modification:-e

Delete:-d-t|u|f service-address-r server-address

View

-l|l

-N: Number format displays host address and port

--stats: Statistical data

--rate: Rate

--timeout: Shows the session timeout length for TCP,Tcpfin , and UDP

-C: Show current Ipvs connection Status

Remove all cluster services

-C: Empty the ipvs rule

Save Rule

Service Ipvsadm Save

Or:

-S

# ipvsadm-s >/path/to/somefile

Load the previous rule:

-R

# Ipvsadm-r </path/form/somefile

Prepare :

three linux virtual machine: rs1 , rs2 , dr , can be on the Internet and configured yun Source, rs2 Install yum install         -y httpd ), DR Install

(yum install-y ipvsadm).

IP address planning:RS1:192.168.10.8 255.255.255.0 Gateway 192.168.10.7

RS2:192.168.10.9 255.255.255.0 Gateway 192.168.10.7

DR:eth0:192.168.10.7 255.255.255.0

eth1:192.168.0.2 255.255.255.0 192.168.0.1

Practices :

1. Change the eth0 NIC connection mode of the three hosts to the host mode only,the DR 's eth1 to the bridge mode, the base site planning configuration corresponds to the IP , so that three virtual machine network interoperability

2. In order to show the effect, we provide different Web pages on two RS respectively

: echo " fsy. RS1  >/var/www/html/index.html

: echo " fsy. RS2  >/var/www/html/index.html

3. start the Web service on RS1 and RS2 and test it (you can try to shut down the firewall and SELinux if you have problems with the process )

RS1: #service httpd start

#curl http://192.168.10.8

#curl http://192.168.10.9

RS2: #service httpd start

#curl http://192.168.10.8

#curl http://192.168.10.9

4. test on DR

#curl http://192.168.10.8

#curl http://192.168.10.9

5. Configure on DR (write Ipvs rule) after all normal testing

# ipvsadm-a-T 192.168.0.2:80-s RR

# ipvsadm-a-T 192.168.0.2:80-r 192.168.10.8-m

# ipvsadm-a-T 192.168.0.2:80-r 192.168.10.9-m

# IPVSADM-L-N View

6. Turn on and turn off the firewall between network cards

# echo 1 >/proc/sys/net/ipv4/ip_forward

#service iptables Stop

7. Open the browser for access testing.

As I expected, everything is fine!

This article is from the "10917734" blog, please be sure to keep this source http://10927734.blog.51cto.com/10917734/1826932

Configure a simple Web lb cluster with LVs