Resolved: wkhtmltopdf: cannot connect to X server

Unfortunately the latest versions of wkhtmltopdf are not headless and as a result you will need to download wkhtmltopdf version 0.12.2 in order to get it running in a CLI environment. I haven't had any luck with any other versions - but please let me know if there are any other versions confirmed working.

The other alternative is to fake an X server - however (personally) I prefer to avoid this approach.

You can download version 0.12.2 from here:

cd /tmp
wget https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.2/wkhtmltox-0.12.2_linux-centos7-amd64.rpm
rpm -i wkhtmltox-0.12.2_linux-centos7-amd64.rpm
rpm -ql wkhtmltox

/usr/local/bin/wkhtmltoimage
/usr/local/bin/wkhtmltopdf
/usr/local/include/wkhtmltox/dllbegin.inc
/usr/local/include/wkhtmltox/dllend.inc
/usr/local/include/wkhtmltox/image.h
/usr/local/include/wkhtmltox/pdf.h
/usr/local/lib/libwkhtmltox.so
/usr/local/lib/libwkhtmltox.so.0
/usr/local/lib/libwkhtmltox.so.0.12
/usr/local/lib/libwkhtmltox.so.0.12.2
/usr/local/share/man/man1/wkhtmltoimage.1.gz
/usr/local/share/man/man1/wkhtmltopdf.1.gz