Hey guys, I run a website called http://www.rapwave.net and have been dealing with a frustrating error.
I am on a VPS with the hosting company Green Geeks and have been through a ton of support requests with them already to no avail.
What's happening with my site is that is it running normally 98% of the time at around 0.3 server load. My site runs very quickly and can have around 1500 people or more on it at one time.
Unfortunately my server is crashing when there is nobody on it randomly, every morning and admin-ajax.php causing a CPU spike to 5.0 with no web traffic. It has as been crashing my site once every 24 hours.
I took a look at my cron jobs through WP Crontrol and found nothing aside from a repeating disqus module, removed and updated as many plugins as I could and it seems I'm getting a large number of POST and GET requests that are somehow knocking down my page.
It happens usually only once per day and I thought installing Heartbeat Control would resolve the issue but it has not.
Any advice on troubleshooting this issue would be greatly appreciated. I have a hard time reproducing the issue with scans and have no idea where to start. The CPU spike usually happens in the morning and the GET and POST and EDIT requests that are flooding the server are coming from one of my users (who does not have permissions to edit posts via User Role Editor) according to my web host.
Anyone who can help me with this issue it would be greatly appreciated to the point where I'd even be willing to tip them for their advice.
Just want this resolved as soon as possible instead of having to deal with it every single day.