Custom Error Page not showing with using AJP Proxy with Apache

问题

I am trying to setup custom 403 and 404 error pages on Apache.

Server config is as follows:
Server version: Apache/2.4.29 (Ubuntu)
Server built:   2019-04-03T13:22:37
Ubuntu 18.04.2 LTS

I use Apache for AJP reverse proxy, as below:

    ProxyVia On
    ProxyRequests Off
    ProxyPreserveHost On
    ProxyPass /app ajp://localhost:8009/share
    ProxyPassReverse /app ajp://localhost:8009/share

My ErrorDocument code is as below:

    ErrorDocument 404 /cah-404.html
    ErrorDocument 403 /cah-403.html

Now if I go via browser to the above app, like "https://server.xyz/app", I get a message like the below:

Forbidden
You don't have permission to access /app/ on this server.
Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.

Apache/2.4.29 (Ubuntu) Server at server.xyz Port 443

My custom error pages are at /var/www/html Permission on those pages is 444

Any ideas why this error is happening? I am trying to access the page from an ISP that is not authorised. So it is fine that Forbidden is showing - but it should show the custom forbidden page.

回答1:

I have resolved this using: https://serverfault.com/questions/266924/apache-reverse-proxy-error-page-when-proxied-server-is-down

The key part of the answer is "You should use a URL to point to your ErrorDocument otherwise if you use a filesystem reference you will get an additional 503 whilst trying to find it."

So now, my errordocument directives look like:

ErrorDocument 404 http://server.xyz/cah-404.html
ErrorDocument 403 http://server.xyz/cah-403.html

来源：https://stackoverflow.com/questions/56966239/custom-error-page-not-showing-with-using-ajp-proxy-with-apache

标签

apache

Tomcat

reverse-proxy

ajp