Nic, On 5/31/2017 5:42 AM, Nicholas Cottrell wrote: > Hi All! > > I'm having a problem setting up an existing webapp from Apache > 2.2/Tomcat6 on a new server running Centos 7, and the following > packages: > > httpd 2.4.6-45.el7.centos.4 tomcat.noarch > 7.0.69-11.el7_3 @updates tomcat-native.x86_64 > 1.1.34-1.el7 @epel > > For debugging I have enabled AJP/1.3 and 8009 and HTTP on 8080, then > use Apache to ProxyPass. > > With my initial configuration, data from a form POST is not available > via request.getParameter: > > ProxyPass / ajp://localhost:8009/ <ajp://localhost:8009/> retry=1 > acquire=3000 timeout=600 Keepalive=On ProxyPassReverse / > ajp://localhost:8009/ <ajp://localhost:8009/> > > But changing it to this fixes everything: > > ProxyPass / http://localhost:8080/ <http://localhost:8080/> retry=1 > acquire=3000 timeout=600 Keepalive=On ProxyPassReverse / > http://localhost:8080/ <http://localhost:8080/> > > In the broken instance, request.getParameter("x") returned null, but > request.getReader() returned bytes with "x=123" so seems that Apache > is sending the POST body but Tomcat is not processing it correctly, > yes? > > Please also see > https://stackoverflow.com/questions/44167876/problems-with-post-parameters-with-tomcat-ajp-on-apache-2-4-but-not-2-2 > <https://stackoverflow.com/questions/44167876/problems-with-post-parameters-with-tomcat-ajp-on-apache-2-4-but-not-2-2> > for my steps so far. > > I would prefer to switch back to AJP for the proxy, since I > understand it is more performant, right? Should I try forcing a > Tomcat 8 install to see if the problem persists there too? > > Best, Nic. >
I wasn't aware that mod_proxy_ajp was available on a stock CentOS 7 even with epel enabled. If you're using the ajp protocol (it's not HTTP), then you'll need to get mod_jk (from tomcat.apache.org) and build it yourself. It's not difficult. However, the configuration is quite a bit different. Fortunately, there is an excellent set of example configuration files in the source (see the conf subdirectory). mod_proxy_ajp.so was shipped with CentOS 6, but does not appear to be available with CentOS 7. Either that - or go with mod_proxy_http and proxy to the HTTP connector (default in server.xml is port 8080). . . . just my two cents /mde/
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