Building Scalable Web Cluster using LVS - Revision history

Wensong at 14:31, 16 December 2006

2006-12-16T14:31:08Z

2006-12-16T04:57:14Z

2006-12-09T13:33:24Z

‎Configuration Example

2006-12-09T12:04:24Z

‎Configuration Example

2006-12-09T11:52:50Z

‎Introduction

2006-12-09T11:24:50Z

‎Introduction

2006-12-06T09:01:06Z

‎Configuration Example

2006-12-06T09:00:38Z

‎Introduction

2006-12-06T09:00:13Z

‎Introduction

2006-01-22T11:24:31Z

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 == Configuration Example ==
-In the configuration example, we will have a [[LVS/NAT]] cluster of three web servers. The virtual IP address of load balancer is 10.23.8.80, and gateway ip address for internal web servers is 172.18.1.254. The ip addresses of three real servers are 172.18.1.11, 172.18.1.12 and 172.18.1.13 respectively.
+In the configuration example, we will have a [[LVS/NAT]] cluster of three web servers. The virtual IP address of load balancer is 10.23.8.80, and gateway ip address for internal web servers is 172.18.1.254. The ip addresses of three web servers are 172.18.1.11, 172.18.1.12 and 172.18.1.13 respectively. The web servers can run apache or other web server programs.
 We use the following [[ipvsadm]] commands to setup IPVS rules:
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 It's easier to build web cluster using LVS and add scalability and availability into the web system.
 {{lvs-example-stub}}
 [[Category:LVS Examples|Web]]

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 Then, use any computer outside the internal network (172.18.1.0/24) to access http://10.23.8.80/, and see whether it works or not. "ipvsadm -Ln" can be used to list the IPVS table, and "ipvsadm -Lcn" can be used to list the IPVS connections.
-Once the basic cluster configuration works, we can consider to use [[LVS Cluster Management|cluster management]] software to add reliability and availability into the cluster system.
+Once the basic cluster configuration works, we can consider to use [[LVS Cluster Management|cluster management]] software to add reliability and availability into the web cluster system.
 == Conclusion ==
 {{lvs-example-stub}}
 [[Category:LVS Examples|Web]]

@@ Line 32: / Line 32: @@
 In the configuration example, we will have a [[LVS/NAT]] cluster of three web servers. The virtual IP address of load balancer is 10.23.8.80, and gateway ip address for internal web servers is 172.18.1.254. The ip addresses of three real servers are 172.18.1.11, 172.18.1.12 and 172.18.1.13 respectively.
-We use the following commands to setup IPVS rules:
+We use the following [[ipvsadm]] commands to setup IPVS rules:
   ipvsadm -A -t 10.23.8.80:80 -s wlc
   ipvsadm -a -t 10.23.8.80:80 -r 172.18.1.11 -m -w 100
   ipvsadm -a -t 10.23.8.80:80 -r 172.18.1.12 -m -w 100
   ipvsadm -a -t 10.23.8.80:80 -r 172.18.1.13 -m -w 100
 == Conclusion ==

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 == Configuration Example ==
-if you want to install ipvsadm-1.24 for kernel 2.6 in red hat enterprise linux 4 ,you need to do ln -s /usr/src/kernels/2.6.9-5.EL-hugemem-i686/ /usr/src/linux
+In the configuration example, we will have a [[LVS/NAT]] cluster of three web servers. The virtual IP address of load balancer is 10.23.8.80, and gateway ip address for internal web servers is 172.18.1.254. The ip addresses of three real servers are 172.18.1.11, 172.18.1.12 and 172.18.1.13 respectively.
-为什么什么都没有的啊？
 == Conclusion ==

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 == Introduction ==
-Web cluster is a cluster system of more than one computer to provide HTTP and HTTPS service. Clustering is the best approach to achieve the scalability, availability and reliability of web services.
+Web cluster is a cluster system of more than one computer to provide HTTP and HTTPS service (also called web server farm). Clustering is the best approach to achieve the scalability, availability and reliability of web services.
 Web cluster with many inexpensive commodity servers can easily handle large volumes of web requests, without creating unwanted delays. The number of servers can be added as workload is increasing.

← Older revision		Revision as of 11:24, 9 December 2006
Line 1:		Line 1:
	== Introduction ==		== Introduction ==
		+
		+	Web cluster is a cluster system of more than one computer to provide HTTP and HTTPS service. Clustering is the best approach to achieve the scalability, availability and reliability of web services.
		+
		+	Web cluster with many inexpensive commodity servers can easily handle large volumes of web requests, without creating unwanted delays. The number of servers can be added as workload is increasing.

	== Architecture ==		== Architecture ==

← Older revision		Revision as of 09:01, 6 December 2006
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	if you want to install ipvsadm-1.24 for kernel 2.6 in red hat enterprise linux 4 ,you need to do ln -s /usr/src/kernels/2.6.9-5.EL-hugemem-i686/ /usr/src/linux		if you want to install ipvsadm-1.24 for kernel 2.6 in red hat enterprise linux 4 ,you need to do ln -s /usr/src/kernels/2.6.9-5.EL-hugemem-i686/ /usr/src/linux
		+	为什么什么都没有的啊？

	== Conclusion ==		== Conclusion ==