Vbg: /* Configuration Example */

2007-08-13T05:14:54Z

‎Configuration Example

Wensong at 11:16, 7 May 2006

2006-05-07T11:16:59Z

2006-01-22T14:35:21Z

2005-11-16T11:35:00Z

New page

== Introduction ==

== Architecture ==

== Configuration Example ==

== Conclusion ==

[[Category:LVS Examples|Terminal]]

← Older revision		Revision as of 05:14, 13 August 2007
Line 7:		Line 7:
	== Configuration Example ==		== Configuration Example ==

		+	The basic issue faced by me during LVS configuration using piranha was that Nanny could not monitor the service and would frequently give a READ TIME OUT.
		+
		+	The configuration otherwise was a standard LVS-NAT configuration in rr mode. Once the connection with a Terminal Server was established, there would be direct communication with the selected Terminal Server.
		+
		+	Environment ->
		+
		+	LVS-Piranha Server(s) -> RHEL 5 (2.6.18-8.el5) running piranha (2 in number)
		+	Real Servers -> RHEL 4 (2.6.9-42.ELSmp) acting as Terminal Servers (xdm->gdm)
		+
		+	To get around the Nanny read time out, issue ->
		+
		+	On the Real servers ->
		+
		+	a) Enable remote shell access by the LVS server(s)
		+	For RHEL 4 -> install rsh-server rpm
		+	edit /etc/securetty
		+	enable rsh and rlogin
		+	restart xinetd
		+	create .rhosts file in the home folder of the user (in my case root) to allow remote access from LVS Server(s)
		+
		+	b) Create a small script in /usr/local/bin (let's say xdmstatus) ->
		+	#!/bin/bash
		+
		+	RESULT=`netstat -an \| grep 177 \| grep udp \| awk '{ print $1 }'`
		+	echo $RESULT
		+
		+	c) make this script executable (chmod a+x)
		+
		+
		+	On the LVS Server(s) ->
		+
		+	modify /etc/sysconfig/ha/lvs.cf to contain (please see snippet) ->
		+	send_program = "/usr/bin/rsh %h /usr/local/bin/xdmstatus"
		+	expect = "udp"

	== Conclusion ==		== Conclusion ==

← Older revision		Revision as of 14:35, 22 January 2006
Line 9:		Line 9:

	== Conclusion ==		== Conclusion ==
		+
		+
		+	{{lvs-example-stub}}


	[[Category:LVS Examples\|Terminal]]		[[Category:LVS Examples\|Terminal]]