CentOS 8 + http2

[wheeler]

I’ve just setup a new server, my first with CentOS 8, the installer worked well and it’s set up nicely. Good job!

I was hoping with CentOS 8 + php-fpm (either 7,2, or with remi’s 7.3 or 7.4 software collections) I’d finally have support for http2, but everything still appears to be http1 and I can’t see options to change.

I’ve done some searching and have found some older questions, but the answers seemed to be that support for http2 would probably come once all supported Distro’s came with an Apache version which supports http2. I believe that time has come!

Any news on when this will be available, or am I simply overlooking a setting somewhere?

[ramin]

Apache 2.4.17 or newer supports http/2. It doesn’t automagically turn itself on, you need to enable it.

How to Enable HTTP/2 in Apache Web Server

As long as Apache and OpenSSL are new enough (and they probably are with Debian or Ubuntu releases supported by Virtualmin), enabling http/2 should just be a matter of loading the http2 module and adding Protocols h2 h2c http/1.1 to the main Apache config. Make sure only one MPM module is loading, either worker or event. The error about php_admin_value suggests the mod_php module was loading at one time but no longer is, which is what you want. See if commenting-out that line in your Apache con…

[wheeler]

Oh wow, that was easier than I’d expected.

CentOS 8 comes with Apache 2.4.37 and mod_http2 was already loaded (in /etc/httpd/conf.modules.d/10-h2.conf)

All I had to do was add “Protocols h2 h2c http/1.1” to /etc/httpd/conf/httpd.cond (I put it directly after the ‘Listen’ line).

All sites are now serving requests over http2

It would be nice to have an option in the GUI for ‘Protocols’, if there isn’t one already?