I am having trouble with getting proxypass to work in apache.

My configuration file is as follows:


    ServerName example.com
    ServerAlias www.example.org
    ServerAdmin info@example.org
    DocumentRoot /home/admin/web/knyz.org/public_html
    ScriptAlias /cgi-bin/ /home/admin/web/knyz.org/cgi-bin/
    Alias /vstats/ /home/admin/web/knyz.org/stats/
    Alias /error/ /home/admin/web/knyz.org/document_errors/
    #SuexecUserGroup admin admin
    CustomLog /var/log/apache2/domains/knyz.org.bytes bytes
    CustomLog /var/log/apache2/domains/knyz.org.log combined
    ErrorLog /var/log/apache2/domains/knyz.org.error.log
    <Directory /home/admin/web/knyz.org/public_html>
        AllowOverride All
        Options +Includes -Indexes +ExecCGI
    <Directory /home/admin/web/knyz.org/stats>
        AllowOverride All
    SSLEngine on
    SSLVerifyClient none
    SSLCertificateFile /home/admin/conf/web/ssl.knyz.org.crt
    SSLCertificateKeyFile /home/admin/conf/web/ssl.knyz.org.key
    SSLCertificateChainFile /home/admin/conf/web/ssl.knyz.org.ca
    <IfModule mod_ruid2.c>
        RMode config
        RUidGid admin admin
        RGroups www-data
    <IfModule itk.c>
        AssignUserID admin admin

    IncludeOptional /home/admin/conf/web/sapache2.knyz.org.conf*

    ##ISSUE IS HERE!!!
    <Location /admin>
        ProxyPass https://localhost:8083
        ProxyPassReverse https://localhost:8083

Desired result: The page from localhost on port 8083 will be shown when accessing the /admin subdirectory.

Actual result: Error 500

The issue seems to be the same as here: Apache ProxyPass with SSL

Except the solution does not work for me.

When attempting to do so, I get the following error while restarting apache:

SSLProxyEngine not allowed here

From error logs (concerning error 500):

[Sun Dec 13 21:33:31.062959 2015] [ssl:error] [pid 1181] [remote] AH01961: SSL Proxy requested for example.org:443 but not enabled [Hint: SSLProxyEngine]
[Sun Dec 13 21:33:31.063033 2015] [proxy:error] [pid 1181] AH00961: HTTPS: failed to enable ssl support for (localhost)

How can I fix this issue?


I replaced the location block with the following

ProxyPreserveHost On
  ProxyPass /blog
  ProxyPassReverse /blog
  ProxyPass /admin
  ProxyPassReverse /admin

And now /blog works properly but /admin DOES NOT. This means that the issue is definitely with the SSL.

  • @ekaj I happened to test what you proposed even before seeing your answer ;) Anyways updated question. Issue must be with HTTPS – Slava Knyazev Dec 14 '15 at 4:44
  • Note: My setup is configured as such that I am forced to use https on port 8083 – Slava Knyazev Dec 14 '15 at 4:44
  • @ekaj SSLProxyEngine On did the trick. Also yes everything is setup as intended. It's a bit of a weird setup but it works the way I need it to. – Slava Knyazev Dec 14 '15 at 4:56
  • @ekaj Want to write an answer with SSLProxyEngine so I can close the question? – Slava Knyazev Dec 14 '15 at 4:56

From what I can tell ProxyPass isn't meant to be used inside of a block - you have it in a <Location> block. It needs to be out of that block, and you need to turn SSLProxyEngine on as well:

    SSLProxyEngine On
    ProxyPass /admin https://localhost:8083/
    ProxyPassReverse /admin https://localhost:8083/

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