Nginx – Varnish on 80, nginx on 8080, on which port to put jenkins

So I managed to fix this problem, apologies to anyone who tried to find the answer as it wasn't quite the issue I diagnosed.

Before I applied varnish I told wordpress my site url was playwithbits.com:8080 so that it would correctly serve content, so it was appending the port number to all my URLs.

I completely forgot about this setting and once I removed the port number my site started to work normally.

You should add

listen 8080 default;

And make sure that in other configuration files or virtualhosts there is no other default port 80.