Is there a command that list all enabled Apache modules?
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7 Answers
To list apache loaded modules use:
apachectl -M
or:
apachectl -t -D DUMP_MODULES
or on RHEL,CentoS, Fedora:
httpd -M
For more options man apachectl. All these answers can be found just by little google search.
answered Feb 4, 2013 at 12:04
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3
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30I love this comment about google search (found this answer via google)– PawelmhmSep 25, 2013 at 19:41
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1The use of server-info is harder to find via google and gives much more details && the ability to give access to the information to people who don't have shell access (eg client, web developpers, project managers, ...)– user130370Nov 6, 2013 at 12:44
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man apachectlon Ubuntu 20.04 does not include this option (or others), but the command still works. The man page isn't that helpful here Nov 18, 2020 at 12:15 -
Prefix command with sudo e.g.
sudo httpd -Mif you get errors like local ssl cert not found etc. Its due to permission issue. Jun 29, 2022 at 14:17
Also you can use server-info to get info from remote servers
<Location /server-info>
SetHandler server-info
Order allow,deny
Allow from 127.0.0.1 xxx.xxx.xxx.xxx
</Location>
You can get list of all enabled Apache modules at http://your.host.example.com/server-info?list
You need to enable the info module:
sudo a2enmod info.load
sudo a2enmod info.conf
sudo service apache2 restart
After restart:
http://localhost/server-info
will provide a long list of modules, and configuration info.
To view from remote servers, you can change the 'Requires' option in /etc/apache2/mods-available/info.conf to allow remote servers to view info.
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1Why not use the
a2enmodcommand to enable an {installed} module, instead of "symlinking" it manually? Jun 8, 2015 at 8:37 -
Yes a2enmod is more correct. When I'm editing configs I usually stay with the files and don't think of the specialty commands that I rarely use. Jun 9, 2015 at 14:02
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Okay, it works both ways anyway, in 2.4 (maybe already earlier also?) you also have the
a2enconfto symlink files from "conf-available" directory to "conf-enabled" :) Jun 9, 2015 at 14:19
On more recent iterations of Debian and Ubuntu there is also the a2query command:
a2query -m
authz_host (enabled by maintainer script)
ssl (enabled by site administrator)
...
Usage:
Usage: /usr/sbin/a2query -q -m [MODULE] -s [SITE] -c [CONF] -a -v -M -d -h
-q suppress any output. Useful for invocation from scripts
-m [MODULE] checks whether the module MODULE is enabled, lists all enabled
modules if no argument was given
-s [SITE] checks whether the site SITE is enabled, lists all sites if no
argument was given
-c [CONF] checks whether the configuration CONF is enabled, lists all
configurations if no argument was given
-a returns the current Apache 2 module magic version
-v returns the current Apache 2 version
-M returns the enabled Apache 2 MPM
-d returns the Apache 2 module directory
-h display this help
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2
This works also:
apache2ctl -M
The above answers are old and no longer work for my modern Fedora Server 31 / 32 and Apache 2.4.
Here's what does:
httpd -t -D DUMP_MODULES
But, there is a caveat that this will only work if you have an appropriately configured /etc/httpd/conf/httpd.conf, so if you're in the middle of editing to set LogLevel, it won't work if your edits are in-progress and not valid!
Ubuntu 22.04 LTS:
sudo a2enmod info.load
sudo service apache2 restart
After restart:
sudo wget http://localhost/server-info --no-check-certificate && cat server-info
