Setup mod_proxy on apache http server

Question

I wanted to reverse proxy a web service from my tomcat server using apache web server. I have modified the httpd.conf

LoadModule proxy_module modules/mod_proxy.so

<Directory />
    AllowOverride none
    Require all denied
</Directory>

ProxyPass         /ROOT  http://localhost:8080/ROOT
ProxyPassReverse  /ROOT  http://localhost:8080/ROOT

My Tomcat server runs on port 8080, now when I run localhost/ROOT, I get error 500 internal server error.

This last entry in the error_log is:

[Thu Jul 04 14:17:00.097359 2013] [proxy:warn] [pid 18980:tid 4476780544] [client 127.0.0.1:50525] AH01144: No protocol handler was valid for the URL /ROOT. If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule.

The last entry in the access_log is:

 127.0.0.1 - - [04/Jul/2013:14:17:00 -0400] "GET /ROOT HTTP/1.1" 500 528

Any idea on what I am doing wrong here?

Hey, so that did not work, this is how httpd.conf looks like LoadModule proxy_module modules/mod_proxy.so AllowOverride none Require all denied ProxyPass /ROOT localhost:8080/ROOT ProxyPassReverse localhost:8080/ROOT /ROOT — user1386101, Jul 04 '13 at 18:18
See also http://superuser.com/questions/439054/apache-reverse-proxy-no-protocol-handler — Raedwald, May 22 '15 at 15:01
See also http://serverfault.com/questions/242650/setting-up-a-basic-mod-proxy-virtual-host — Raedwald, May 22 '15 at 15:01

score 99 · Accepted Answer · answered Jul 04 '13 at 19:07

99

So it took some time but I figured out the way to do it. There is one more module which needs to be loaded. This is what the httpd.conf looks like

LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_http_module modules/mod_proxy_http.so

<Directory />
    AllowOverride none
    Require all denied
</Directory>

ProxyPass         /ROOT  http://localhost:8080/ROOT
ProxyPassReverse  /ROOT  http://localhost:8080/ROOT

This works for sure. :)

answered Jul 04 '13 at 19:07

user1386101

1,945
1
14
21

50

`sudo a2enmod proxy` `sudo a2enmod proxy_http` `sudo service apache2 restart` – lcapra Jan 16 '14 at 09:33
10

THIS proxy_http is required! – dardo Aug 14 '14 at 20:58
Coming from a world where I used mod_proxy and mod_proxy_ajp for YEARS, you need to replace ajp with the http module in non-java configurations. The clue is this error in the Apache logs: AH01144: No protocol handler was valid for the URL – ed209 Feb 25 '15 at 16:04

score 69 · Answer 2 · answered Sep 25 '14 at 15:44

69

Since it's easy to overlook, pay attention to @muka's comment:

sudo a2enmod proxy  
sudo a2enmod proxy_http  
sudo service apache2 restart

Make sure to enable both modules proxy and proxy_http!

answered Sep 25 '14 at 15:44

Horen

11,184
11
71
113

Greg · Answer 3 · 2017-03-21T16:21:24.780

17

In addition to the other fine answers, if you're proxying to an https endpoint, you need to enable mod_ssl and add SSLProxyEngine on to your vhost

edited Mar 21 '17 at 16:21

answered Mar 29 '16 at 18:05

Greg

12,119
5
32
34

Setup mod_proxy on apache http server

3 Answers3

Linked