[users@httpd] apache and tomcat reverse proxy: tomcat page does not load

[Alex K <ri...@gmail.com>]

Hi all,

I have a simple reverse proxy setup with the following lines:

      ProxyRequests Off
      ProxyPreserveHost On
      ProxyPass /iforms/ http://localhost:8443/app/
      ProxyPassReverse /iforms/ http://localhost:8443/app/

and relevant modules loaded:
 proxy_module (shared)
 proxy_balancer_module (shared)
 proxy_http_module (shared)

I am running apache 2.4. Apache does host other pages also. One of the
pages does provide access to the tomcat content. Apache is configured with
HTTPS while the tomcat content is loaded with reverse proxy (tomcat is not
configured with SSL)

While it seems that apache tries to load the page (as it briefly shows the
loading bar of the tomcat app) it stops and the page remains blank.

Apache does log the following which indicates a possible permission issue
for POST (?):
Apache access log:

192.168.28.100 - - [21/Dec/2019:23:57:29 +0000] "POST
/iforms/?v-1576972648967 HTTP/1.1" 403 414 "https://localhost:11000/iforms/"
"Mozilla/5.0 (Windows NT 1

While tomcat does log the same 403 code:
Tomcat log:
127.0.0.1 - - [21/Dec/2019:23:57:29 +0000] "POST /app/?v-1576972648967
HTTP/1.1" 403 -

Tomcat listens at port 8443. When accessing directly the app (and not
through reverse proxy of apache), the app loads fine (http://server:8443/app
).

Have checked apache configs for possible permissions issues without seeing
any issues.

Would be grateful for any hints as I am checking this for more then 2 days
without being able to find out where the issue lies.

Thanx,
Alex

[users@httpd] Re: apache and tomcat reverse proxy: tomcat page does not load

[Alex K <ri...@gmail.com>]

It turned out to be a filter at web.xml of tomcat...
Removing it the site is loading fine.

On Sun, Dec 22, 2019 at 2:17 AM Alex K <ri...@gmail.com> wrote:

> Hi all,
>
> I have a simple reverse proxy setup with the following lines:
>
>       ProxyRequests Off
>       ProxyPreserveHost On
>       ProxyPass /iforms/ http://localhost:8443/app/
>       ProxyPassReverse /iforms/ http://localhost:8443/app/
>
> and relevant modules loaded:
>  proxy_module (shared)
>  proxy_balancer_module (shared)
>  proxy_http_module (shared)
>
> I am running apache 2.4. Apache does host other pages also. One of the
> pages does provide access to the tomcat content. Apache is configured with
> HTTPS while the tomcat content is loaded with reverse proxy (tomcat is not
> configured with SSL)
>
> While it seems that apache tries to load the page (as it briefly shows the
> loading bar of the tomcat app) it stops and the page remains blank.
>
> Apache does log the following which indicates a possible permission issue
> for POST (?):
> Apache access log:
>
> 192.168.28.100 - - [21/Dec/2019:23:57:29 +0000] "POST
> /iforms/?v-1576972648967 HTTP/1.1" 403 414 "
> https://localhost:11000/iforms/" "Mozilla/5.0 (Windows NT 1
>
> While tomcat does log the same 403 code:
> Tomcat log:
> 127.0.0.1 - - [21/Dec/2019:23:57:29 +0000] "POST /app/?v-1576972648967
> HTTP/1.1" 403 -
>
> Tomcat listens at port 8443. When accessing directly the app (and not
> through reverse proxy of apache), the app loads fine (
> http://server:8443/app).
>
> Have checked apache configs for possible permissions issues without seeing
> any issues.
>
> Would be grateful for any hints as I am checking this for more then 2 days
> without being able to find out where the issue lies.
>
> Thanx,
> Alex
>