SorryServer - Revision history

Galbum: /* Setting up a Sorry-Server */

2008-01-14T13:15:23Z

‎Setting up a Sorry-Server

2008-01-14T12:24:38Z

‎CREDITS

2006-12-09T16:19:50Z

‎Running the Sorry-Server

2006-12-09T13:46:28Z

‎Using keepalived

2006-11-10T14:58:52Z

2006-05-23T14:25:38Z

‎Setting up a Sorry-Server

2006-04-21T14:52:03Z

‎Using keepalived

2006-04-21T14:50:29Z

‎Using TUX as Sorry-Server

2006-04-21T14:50:07Z

‎Using TUX as Sorry-Server

2006-04-21T14:37:32Z

‎Using keepalied

@@ Line 1: / Line 1: @@
 == Setting up a Sorry-Server ==
-Sometime all of your real-servers might be down or overloaded. This can be due to a mantainace interval,
+Sometime all of your real-servers might be down or overloaded. This can be due to a scheduled maintainace interval,
-hardware failure, badly written dynamic web-content, broken databases or script kiddies bringing your site down.
+multiple hardware failure, badly written dynamic web-content, broken databases or script kiddies bringing your site down.
 In such a situation it is much more polite to tell your customers that you are sorry but your site currently
 is down, rather than just being unavailable.

@@ Line 94: / Line 94: @@
 == CREDITS ==
-TUX is a Linux kernel-project mantained by [http://www.redhat.com RedHat].
+TUX is a Linux kernel-project maintained by [http://www.redhat.com RedHat].
 This patch is maintained by Jacob Rief.
 [[Category:LVS Software]]

@@ Line 78: / Line 78: @@
 In case all of your real-servers are down, you must reroute the traffic onto the Sorry-Server. First flush the Real-Server
 Tables of your [[IPVS]] invoking
-  ipvs -d -t ''service-address'' -r ''server-address''
+  ipvsadm -d -t ''service-address'' -r ''server-address''
 for each of your real-servers. Next add a route the web-traffic onto the Sorry-Server, this normally is done by invoking
-  ipvs -a -t ''service-address'' -r 127.0.0.1:80
+  ipvsadm -a -t ''service-address'' -r 127.0.0.1:80
 once. All web-traffic now is redirected onto the Sorry-Server.

@@ Line 86: / Line 86: @@
 == Using keepalived ==
-The [http://www.keepalived.org/ keepalived] is a program to check real-servers and manage the [[IPVS]]-Tables accordingly. Keepalived can be configured to automatically reroute all the web-traffic onto a Sorry-Server in case all real-servers are down. Simply add this line to each '''virtual_server''' section in the keepalived's configuration file:
+The [http://www.keepalived.org/ keepalived] is a program to check real-servers and manage the [[IPVS]]-Tables accordingly. [[Keepalived]] can be configured to automatically reroute all the web-traffic onto a Sorry-Server in case all real-servers are down. Simply add this line to each '''virtual_server''' section in the keepalived's configuration file:
   virtual_server ''service_address'' {
           ''...snip...''

← Older revision		Revision as of 14:58, 10 November 2006
Line 97:		Line 97:

	This patch is maintained by Jacob Rief.		This patch is maintained by Jacob Rief.
		+
		+	[[Category:LVS Software]]

@@ Line 19: / Line 19: @@
 a number of real-servers, TUX running on the Loadbalancer is able to handle all that traffic by itself.
-The only precaution using [TUX] is not to send a Status '''200 - Ok''' neither an Error-Code '''404 - Not Found'''
+The only precaution using TUX is not to send a Status '''200 - Ok''' neither an Error-Code '''404 - Not Found'''
 as as Sorry-Page. The best fitting Error-Code to send in such a situation is '''502 - Server Overloaded'''.

@@ Line 15: / Line 15: @@
 == Using TUX as Sorry-Server ==
-[[http://www.redhat.com/docs/manuals/tux/TUX-2.2-Manual/ TUX]] is a tiny webserver which runs inside the Linux
+[http://www.redhat.com/docs/manuals/tux/TUX-2.2-Manual/ TUX] is a tiny webserver which runs inside the Linux
 kernel and is therefore predestined as a Sorry-Server. If your Loadbalancer is able to pass your web-traffic to
 a number of real-servers, TUX running on the Loadbalancer is able to handle all that traffic by itself.
-The only precaution using TUX is not to send a Status '''200 - Ok''' neither an Error-Code '''404 - Not Found'''
+The only precaution using [TUX] is not to send a Status '''200 - Ok''' neither an Error-Code '''404 - Not Found'''
 as as Sorry-Page. The best fitting Error-Code to send in such a situation is '''502 - Server Overloaded'''.

@@ Line 85: / Line 85: @@
 Depending on where the TUX-configuration says to have its '''DOCUMENTROOT''', go to that directory and edit the file '''404.html''' adding some text such as ''Momentary system interruption''. You may also add stylesheet- and image-files to the Sorry-Server DOCUMENTROOT, you should however delete any '''index.html''' file since this would be served by default and with a HTTP-Status '''200 - OK'''. This is certainly not your intention.
-== Using keepalied ==
+== Using keepalived ==
-The [[http://www.keepalived.org/ keepalied]] is a program to check real-servers and manage the [[IPVS]]-Tables accordingly. Keepalived can be configured to automatically reroute all the web-traffic onto the Sorry-Server. Simply add this line to each '''virtual_server''' block in the keepalived's configuration file:
+The [[http://www.keepalived.org/ keepalived]] is a program to check real-servers and manage the [[IPVS]]-Tables accordingly. Keepalived can be configured to automatically reroute all the web-traffic onto a Sorry-Server in case all real-servers are down. Simply add this line to each '''virtual_server''' section in the keepalived's configuration file:
           sorry_server 127.0.0.1 80