Question HTTP/2 Server Push for Apache possible?

[daanse]

Hi,
with latest Plesk (17.5.x and Debian 8.9) can i enable HTTP/2?
I have nginx completely disabled (some years ago) and i don't want to enable it.

Is it possible with Apache2 only? If yes, how? I didn't find helpful KBs

 

[IgorG]

HTTP/2 Support in Plesk

HTTP/2 support is available for Plesk customers starting from the version 12.5.30 Update #28 and requires the latest version of nginx.

Moreover, nginx should be started.

 

[daanse]

Hm, i have a Server with multiple Joomlas and Wordpresses.
Can i just install NGINX and regenerate all vhosts configs?
Will that work on the fly? or do i have to take care over ALL htaccess files and so on?

 

[IgorG]

In general, everything should work properly, but you understand that nothing is perfect and problems are possible.
If you have something special in your .htaccess files I can recommend you try to use this Plesk extension - htaccess to nginx - Plesk Extensions

 

[burnley]

Hi,
with latest Plesk (17.5.x and Debian 8.9) can i enable HTTP/2?
I have nginx completely disabled (some years ago) and i don't want to enable it.

Is it possible with Apache2 only? If yes, how? I didn't find helpful KBs

I don't know of anyone running Apache with http/2 support on Plesk. It can be done, but it's very convoluted and you might run into various packaging issues - dependencies, yum priorities and all that. For CentOS 7 I've got a non-Plesk test server running Apache 2.4.27 with http/2 support, but there are caveats:
- You need CentOS 7.4 with the latest OpenSSL 1.0.2k and you must rebuild httpd with http/2 support.
- http/2 requires a threaded multi processing module, so prefork won't work. However, if running worker you'll run into problems with various PHP libraries (php-imap comes to mind) which aren't thread safe and will experience random crashes.
- No NPN support, just ALPN, so certain older browsers will still use 1.1
For Plesk I'd stick with sw-nginx as proxy for Apache for the time being.