Java Apache Project : Apache JServ 1.0 : Configuration : Load Balancing :
How do I use the load balancing features of Apache JServ 1.0b3 and higher?
---------- From: Jean-Luc Rochat Jean-Luc.Rochat@alcatel.fr To: Java Apache Users java-apache-users@list.working-dogs.com Subject: [repost] Load-balancing params setting Date: Thu, Mar 4, 1999, 1:56 AM FYI, I'm writing a load-balancing mini-HowTo. still to be finished .... But I repost here load-balancing params description. How it works : A NEW request is a request wich is not in a HTTP session (no session cookie) balance in the protocol URL means that NEW requests will be dispatched between a set of JServ instances. A JServ instance is one JServ URL : identified by protocol://host:port A set contains 0 .. n JServ instances a JServ instance can belong to 0 .. n sets A cookie-trailer is a String appended to the end of the session cookie. Routing parameters associate one cookie trailer to one JServ. (cookies are set by JServ but chosen/used by mod_jserv) One JServ can use 0..n cookie-trailers. Configuration example : # /try1 and /try2 are servlet mount points that point to the same zone zone1 # this apache will balance new requests to set1, which is a set of JServ ionstances ApJServMount /try1 balance://set1/zone1 ApJServMount /try2 balance://set1/zone1 # /test is a servlet mount point that points to set1 in another zone ApJServMount /test balance://set1/zone2 # /servlet is a servlet mount point that points to set2 ApJServMount /servlet balance://set2/zone1 #set 1 description ApJServBalance set1 PII450-1 ApJServBalance set1 PII450-2 #set 2 description (host firstE450 has a weight = 4, Sparc5 = 1 just an exemple) ApJServBalance set2 Sparc5 1 ApJServBalance set2 firstE450 4 #JServ instances description ApJHost PII450-1 ajpv11://192.168.0.5:18500 ApJHost PII450-2 ajpv11://192.168.0.5:18501 // (same PC, 2 JServs) ApJHost Sparc5 ajpv11://192.168.0.6:18500 ApJHost firstE450 ajpv11://192.168.0.7:8560 #session routing params ApJRoute 567jkg PII450-1 ApJRoute yup33 PII450-2 ApJRoute sun1 Sparc5 ApJRoute 9985gg55 firstE450 This is still experimental. Working perfectly on some sites, but not totally SMILEYidiot/SMILEY proof. : you have to check carefully your configuration. Once your configuration is OK, it should do the job. As usual, use it at your own risks. Jean-Luc RochatjonATworking-dogsDOTcom
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