http/2

Owned by Aleksei Melnikov
Last updated: Aug 16, 2021
1 min read

Enabling HTTP/2 for Apache httpd

Enabling HTTP/2 for TermWeb speeds up initial page render about 3x times.

Prior to enable HTTP/2 you must have at least Apache httpd 2.4.17

To enable HTTP/2 protocol for host use next config: Protocols h2 h2c http/1.1 for your virtual host config, like this:

<VirtualHost *:80> ServerName example.termweb.eu Protocols h2 h2c http/1.1 </VirtualHost>


If after restarting httpd (apachectl restart) HTTP/2 is not available then check next things:

  1. That you applied to both http and https connections new protocol

  2. That your httpd config has enabled MPM event in /etc/httpd/conf.modules.d/00-mpm.conf you need to uncomment there next line:

    # event MPM: A variant of the worker MPM with the goal of consuming # threads only for connections with active processing # See: http://httpd.apache.org/docs/2.4/mod/event.html # LoadModule mpm_event_module modules/mod_mpm_event.so

    Plus comment old one:

    #LoadModule mpm_prefork_module modules/mod_mpm_prefork.so

    And then restart httpd again.