Linking Apache httpd to Apache Tomcat

For 2023 - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

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Current connectors are jk and proxy; jserv, warp and jk2 are deprecated. As well as httpd and Tomcat downloads, you'll need mod_jk and then you'll need to configure it. I've seen some long explanations ... so here's a "bare bones" for the configuration files:

Onto the end of httpd.conf:

LoadModule jk_module modules/mod_jk.so
JkWorkersFile /usr/local/tomcat/conf/jk/workers.properties
JkMount /*.jsp catkin

Into the workers property file mentioned

worker.list=catkin
worker.catkin.type=ajp13
worker.catkin.host=localhost
worker.catkin.port=8009

Full Story, including why you need to make the link, in our solutions centre. Training in installing and configuring Apache httpd and Apache Tomcat, and on using both the jk and proxy connectors on our Deploying Apache httpd and Tomcat course

Update - 10th December 2005. The story's updated again. With the new Apache 2.2 httpd server, the jk support is provided as part of the download and no longer has to be sourced separately - a good move that removes at least one loop from the process.
(written 2005-09-05, updated 2006-06-05)

Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles

A655 - Web Application Deployment - Using Tomcat and Apache httpd Together
  [576] Why run two different web servers - (2006-01-25)
  [631] Apache httpd to Tomcat - jk v proxy - (2006-03-03)
  [1376] Choosing between mod_proxy and mod_rewrite - (2007-10-02)
  [1383] Monitoring mod_jk and how it is load balancing - (2007-10-07)
  [1549] http, https and ajp - comparison and choice - (2008-02-22)
  [1552] Extra public classes in deploying Apache httpd and Tomcat - (2008-02-24)
  [1771] More HowTo diagrams - MySQL, Tomcat and Java - (2008-08-24)
  [1938] Predictive Load Balancing - PHP and / or Java - (2008-12-13)
  [1940] URL rewriting with front and back servers - (2008-12-14)
  [1944] Forwarding session and cookie requests from httpd to Tomcat - (2008-12-14)
  [2482] Load balancing with sticky sessions (httpd / Tomcat) - (2009-10-29)
  [3018] Tuning Apache httpd and Tomcat to work well together - (2010-10-27)
  [3999] Handling failures / absences of your backend server nicely - (2013-02-08)

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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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