Which Apache-modules must I enable?

Question

I'm running a VPS with Ubuntu 14.04.4 x64 and Apache 2.4.7, and would like to set-up a WordPress site on it. Which apache-modules must I have enabled - and which should I enable (eg. for cool WP-features)? Are there any modules I absolutely should not enable?

Answer 1

Here is the list of minimum Apache modules which is required to run WordPress websites.

mod_alias
mod_authz_host
mod_deflate
mod_dir
mod_expires
mod_headers
mod_mime
mod_rewrite
mod_log_config
mod_autoindex
mod_negotiation
mod_setenvif

Answer 2

Of the list above, these are definitely not required (although they could be useful).

mod_deflate mod_expires mod_mime

Others might also be able to be omitted, depending on what you're doing and what you want to give up.

Answer 3

The question asked is older but still relevant and this thread still comes up today in search results. Researching for my own understanding, I hope the following info updates & helps.

Referencing CloudLinux 8.4 & 7.8 with Cpanel v100.x servers and EasyApache4.

Checked Apache loaded modules with #apachectl -M and compared the enabled modules with the list and presented options in EA4.

To update the module list: :not offered in EA4 - appear to be installed / enabled by default in apachectl mod_alias; mod_authz_host; mod_dir.

:offered in EA4 and were already enabled on the two reference servers. mod_expires; mod_headers; mod_mime; mod_rewrite; mod_log_config; mod_autoindex; mod_negotiation; mod_setenvif.

In EA4 these could be useful: mod_brotli : https://docs.cpanel.net/ea4/apache/apache-module-brotli/

mod_cgi /mod_cgid / mod_fcgid : https://docs.cpanel.net/ea4/apache/apache-module-fcgid/ - lots of caveats with this one - the test servers had mod_cgi eabled on one and mod-cgid on the other - not sure how these were enabled - further review needed

mod_deflate :: Enable - relates to Optimize Website tool : html / txt file compression to enhance site speed via Apache. Ref https://docs.cpanel.net/cpanel/software/optimize-website/ - Also review Gzip compression options in WHM->Tweak Settings - check vCPU count defaults to 1 - increase to add CPU's (max = total CPU's)

mod_expires :: Enabled by default - Ref https://support.cpanel.net/hc/en-us/articles/1500008232181-How-to-set-Expires-Headers-for-Your-Site-on-cPanel

There are more but I'll review another day.