FAQ - Revision history

Georg: /* How to compile ipvsadm on difficult Linux distributions */

2009-11-10T17:10:32Z

‎How to compile ipvsadm on difficult Linux distributions

Ckujau: how to check for IPVS support w/o installing tools/modules.

2009-07-25T23:00:07Z

how to check for IPVS support w/o installing tools/modules.

Wensong at 11:37, 26 May 2007

2007-05-26T11:37:05Z

Wensong: /* Is there a quick guide to setup LVS */

2007-05-26T11:33:02Z

‎Is there a quick guide to setup LVS

Wensong: /* Setup */

2007-05-22T14:30:05Z

‎Setup

Wensong: /* Setup */

2006-11-19T01:13:57Z

‎Setup

Wensong: /* How do I check to see if my kernel has IPVS enabled? */

2006-11-18T03:04:03Z

‎How do I check to see if my kernel has IPVS enabled?

Wensong: /* General */

2006-05-27T15:13:57Z

‎General

Wensong: /* General */

2006-05-27T15:13:16Z

‎General

Galbum: /* How do i get counters from ipvsadm in order to create graphs from? */

2006-04-21T13:15:31Z

‎How do i get counters from ipvsadm in order to create graphs from?

@@ Line 46: / Line 46: @@
 You could also check your current kernel config (<tt>/proc/config{.gz}</tt> or somewhere in <tt>/boot</tt>) if <tt>CONFIG_IP_VS</tt> is set (located under <tt>Networking support->Networking options->Netfilter</tt> when using <tt>make menuconfig</tt> to configure your kernel).
-=== How to compile ipvsadm on difficult Linux distributions ===
+=== How to compile ipvsadm on different Linux distributions ===
 [[Ipvsadm]] is the tool to set up, maintain or inspect the [[IPVS]] table in the Linux kernel. See the article [[compiling ipvsadm on different Linux distributions]] for detailed information.

@@ Line 34: / Line 34: @@
 === How do I check to see if my kernel has IPVS enabled? ===
-Try to run "modprobe ip_vs" and try to see if there is /proc/net/ip_vs. If so, your kernel has [[IPVS]] enabled. You can also run "cat /proc/net/ip_vs" or "ipvsadm -Ln" to see the version number of [[IPVS]].
+Try to run <tt>"modprobe ip_vs"</tt> and try to see if there is <tt>/proc/net/ip_vs</tt>. If so, your kernel has [[IPVS]] enabled. You can also run <tt>"cat /proc/net/ip_vs"</tt> or <tt>"ipvsadm -Ln"</tt> to see the version number of [[IPVS]].
 <pre>
@@ Line 43: / Line 43: @@
 ...
 </pre>
 === How to compile ipvsadm on difficult Linux distributions ===

← Older revision		Revision as of 11:37, 26 May 2007
Line 61:		Line 61:

	Install [http://oss.oetiker.ch/rrdtool/ RRDtool] and preferabely [http://www.cacti.net/ Cacti] onto a host of your choice. From your favorite Linux distribution, install the [http://www.net-snmp.org/ Net-SNMP daemon] onto the Loadbalancer host. Apply the [[Net-SNMP-LVS-Module]] to the Net-SNMP daemon. Using RRDtool and/or cacti you may query the Loadbalancer and create all kind of graphs using the statistics the Loadbalancers IPVS-module delivers.		Install [http://oss.oetiker.ch/rrdtool/ RRDtool] and preferabely [http://www.cacti.net/ Cacti] onto a host of your choice. From your favorite Linux distribution, install the [http://www.net-snmp.org/ Net-SNMP daemon] onto the Loadbalancer host. Apply the [[Net-SNMP-LVS-Module]] to the Net-SNMP daemon. Using RRDtool and/or cacti you may query the Loadbalancer and create all kind of graphs using the statistics the Loadbalancers IPVS-module delivers.
		+
		+	[[Category:LVS Handbook]]

@@ Line 30: / Line 30: @@
 === Is there a quick guide to setup LVS ===
-Yes, please check the article [[Mini Mini Howto]], which covers setting up LVS on Linux distribution of Fedora Core 4 or later.
+Yes, please check the article [[Mini Mini Howto]], which covers setting up LVS quickly on Linux distributions of Fedora Core 4 or later.
 === How do I check to see if my kernel has IPVS enabled? ===

@@ Line 27: / Line 27: @@
 == Setup ==
 === How do I check to see if my kernel has IPVS enabled? ===
@@ Line 42: / Line 46: @@
 === How to compile ipvsadm on difficult Linux distributions ===
-[[Ipvsadm]] is the tool to set up, maintain or inspect the [[IPVS]] table in the Linux kernel. See the article [[compiling ipvsadm on difficult Linux distributions]] for detailed information.
+[[Ipvsadm]] is the tool to set up, maintain or inspect the [[IPVS]] table in the Linux kernel. See the article [[compiling ipvsadm on different Linux distributions]] for detailed information.
 == Statistics ==

← Older revision		Revision as of 03:04, 18 November 2006
Line 31:		Line 31:

	Try to run "modprobe ip_vs" and try to see if there is /proc/net/ip_vs. If so, your kernel has [[IPVS]] enabled. You can also run "cat /proc/net/ip_vs" or "ipvsadm -Ln" to see the version number of [[IPVS]].		Try to run "modprobe ip_vs" and try to see if there is /proc/net/ip_vs. If so, your kernel has [[IPVS]] enabled. You can also run "cat /proc/net/ip_vs" or "ipvsadm -Ln" to see the version number of [[IPVS]].
		+
		+	<pre>
		+	[root@lb4 root]# ipvsadm -Ln
		+	IP Virtual Server version 1.0.11 (size=65536)
		+	Prot LocalAddress:Port Scheduler Flags
		+	-> RemoteAddress:Port Forward Weight ActiveConn InActConn
		+	...
		+	</pre>

	== Statistics ==		== Statistics ==

@@ Line 2: / Line 2: @@
 === What's LVS? ===
-'''LVS''' stands for Linux Virtual Server, which is a highly scalable and highly available server built on a cluster of real servers, with the [[load balancer]] running on the Linux operating system. Users interact as if it were a single virtual server.
+[[LVS]] stands for Linux Virtual Server, which is a highly scalable and highly available server built on a cluster of real servers, with the [[load balancer]] running on the Linux operating system. Users interact as if it were a single virtual server.
 === Is LVS software free? ===
-Yes! All '''LVS''' software is released under the [http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)].
+Yes! All [[LVS]] software is released under the [http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)].
 === Is there a FreeBSD port of LVS software? ===

@@ Line 2: / Line 2: @@
 === What's LVS? ===
-LVS stands for Linux Virtual Server, which is a highly scalable and highly available server built on a cluster of real servers, with the [[load balancer]] running on the Linux operating system. Users interact as if it were a single virtual server.
+'''LVS''' stands for Linux Virtual Server, which is a highly scalable and highly available server built on a cluster of real servers, with the [[load balancer]] running on the Linux operating system. Users interact as if it were a single virtual server.
 === Is LVS software free? ===
-Yes! All LVS software is released under the [http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)].
+Yes! All '''LVS''' software is released under the [http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)].
 === Is there a FreeBSD port of LVS software? ===
@@ Line 14: / Line 14: @@
 === Does LVS cluster support Linux servers only? ===
-No, real servers can almost run any operating systems in a LVS cluster, such as Linux, BSDs, Solaris, and Windows. [[LVS/NAT]] balance servers of the operating systems having TCP/IP support, [[LVS/TUN]] requires servers having IP Tunneling protocol, and [[LVS/DR]] requires servers having a non-arp device. Almost all the modern operating systems support non-arp device.
+No, real servers can almost run any operating systems in a LVS cluster, such as Linux, BSDs, Solaris, and Windows. [[LVS/NAT]] balances servers of the operating systems having TCP/IP support, [[LVS/TUN]] requires servers having IP Tunneling protocol, and [[LVS/DR]] requires servers having a non-arp device. Almost all the modern operating systems support non-arp device.
 == Performance ==

@@ Line 35: / Line 35: @@
 === How do i get counters from ipvsadm in order to create graphs from? ===
 The current kernel 2.6 version of ipvsadm (v1.24) supports
   ipvsadm --list --stats --numeric --exact
 which gives you non-human-readable counters for Connections, Packets and Bytes for each Service Address and Realserver.