How do I set up (Apache) reverse proxy to CLM 2012 (RTC 4 and friends).

Lewis Tsao (217●49●63) | asked Aug 22 '12, 10:31 a.m.
edited Aug 22 '12, 10:47 a.m. by Ralph Schoon (63.4k●3●36●46)

Hi,

I am trying to set up apache as reverse proxy to CLM2012 running Tomcat. As proof of concept both are installed on the same Linux box. I don't have a CA certificates so I removed SSL from CLM (modified tomcat/conf/server.xml, tomcat/webapps/<app>/WEB-INF/web.xml etc). I also added proxyName="clm.example.com" and proxyPort="80" to server.xml.

Apache answers http://clm.example.com no problem.
CLM answers http://clm.example.com:9080/jts/setup no problem.

My proxy settings are as follows:
SetOutputFilter INFLATE;DEFLATE

ProxyPass /jts/ http://clm.example.com:9080/jts/
ProxyHTMLURLMap http://clm.example.com:9080/jts /jts

ProxyPass /ccm/ http://clm.example.com:9080/ccm/
ProxyHTMLURLMap http://clm.example.com:9080/ccm /ccm

ProxyPass /qm/ http://clm.example.com:9080/qm/
ProxyHTMLURLMap http://clm.example.com:9080/qm /qm

<Location /jts/>
        ProxyPassReverse /
        ProxyHTMLEnable On
        ProxyHTMLExtended On
        ProxyHTMLURLMap / /jts/
</Location>

<Location /ccm/>
        ProxyPassReverse /
        ProxyHTMLEnable On
        ProxyHTMLExtended On
        ProxyHTMLURLMap / /ccm/
</Location>

<Location /qm/>
        ProxyPassReverse /
        ProxyHTMLEnable On
        ProxyHTMLExtended On
        ProxyHTMLURLMap / /qm/
</Location>

I can go to http://clm.example.com/jts/setup, log in as ADMIN and carry on set up no problem until "register applications" screen, when I get errors "Unable to load /jts/proxy?uri=http%3A%2F%2Fclm.example.com%3A9080%2Fccm%2Fapplication-about status:403" (Notice the 9080).

I also tried to have a look at http://clm.example.com/ccm/scr and I get

<jd:Application><oslc:publisher rdf:resource="http://clm.example.com:9080/ccm/application-about"/>
<jd:contextRoot>http://clm.example.com:9080/ccm</jd:contextRoot>
<jd:rootServices rdf:resource="http://clm.example.com:9080/ccm/rootservices"/>

again notice the 9080. Same goes for qm. Although admin and rm appear to be OK.

Looking at ccm scr.xml, file, it contains things like "%server-URL%" which I assume is clm.example.com:9080. I assume that apache on one server and clm on another server will give same problem

I tried to set it to %CONTEXT_ROOT% like in admin/scr.xml but results are worse.

The question:

Is it possible to use apache as reverse proxy to clm running tomcat? If so, any documentation on how?

Many thanks

Comments

Ralph Schoon commented Aug 22 '12, 10:46 a.m. | edited Aug 22 '12, 10:46 a.m.

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Hi Lewis,

the system requirements https://jazz.net/library/article/811#HTTP_Reverse_Proxy_Support states: Apache Server 2.2.19 on RHEL and SLES [Non-secure Only (no HTTPS)]. I have not found a configuration and would be interested if you share should you find out what is wrong. I tried on windows with SSL and never got it to work. I did not try without SSL/HTTPS.

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Andrew Rouse (33●1●3) | answered Dec 05 '12, 5:40 a.m.

You need to also specify this so that the hostname from the public URI is passed to the application:

ProxyPreserveHost on

You may also find this article helpful: Configuring Enterprise CLM Reverse Proxies: Apache and mod_proxy

Additionally, I had trouble trying to use SSL between the client and proxy but not between the proxy and application. Using SSL between the proxy and application seemed to work, however.

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