Web-N00b

If you need http/2 enabled at your CPanel server, you need to do few things:

1. Install nghttp2


cd /usr/src/
wget https://github.com/nghttp2/nghttp2/releases/download/v1.15.0/nghttp2-1.15.0.tar.gz
tar -xvzf nghttp2-1.15.0.tar.gz
cd nghttp2-1.15.0
./configure --prefix=/opt/nghttp2
make
make install
echo "/opt/nghttp2/lib" >> /etc/ld.so.conf.d/custom-libs.conf
ldconfig


2. Install openssl


cd /usr/src/
wget https://www.openssl.org/source/openssl-1.0.2j.tar.gz
tar -xvzf openssl-1.0.2j.tar.gz
cd openssl-1.0.2j
./config shared -fPIC --prefix=/opt/openssl
make
make install


3. Install curl


mv /opt/curlssl /opt/curlssl_orig
cd /usr/src/
wget https://curl.haxx.se/download/curl-7.50.3.tar.gz
tar -xvzf curl-7.50.3.tar.gz
env LDFLAGS=-R/opt/openssl/lib CPPFLAGS=-I/opt/openssl/include ./configure --prefix=/opt/curlssl --with-ssl=/opt/openssl --enable-http --enable-ftp --with-nghttp2=/opt/nghttp2
make
make install


4. Add following lines into /var/cpanel/easy/apache/rawopts/Apache2_4


--enable-http2=static
--enable-ssl=static
--with-nghttp2=/opt/nghttp2
--with-crypto=/opt/openssl/lib
--with-ssl=/opt/openssl


5. Rebuild or update Apache to version 2.4 via EasyApache

/scripts/easyapache


6. Enable HTTP2 in Apache config:

echo "Protocols h2 h2c http/1.1" >> /usr/local/apache/conf/includes/pre_main_global.conf


7. Restart Apache

service httpd restart


Finaly, you can find http2 module via

httpd -M | grep http2


or check your website via https://tools.keycdn.com/http2-test