I have been fighting random 522 errors for Cloudflare for several weeks recently for the website app.sycamoreschool.com. This originally started in February. I have had the site owners check with Cloudflare and they have walked through all the steps under the 522 header in the help section. I have also done the same with my provider. The only thing we can point to is something on our network causing the issue. If we use an outside network, there is no issue
Unfortunately, I have been unable to resolve what that can be as we can get to everything else on the internet (including other Cloudflare related sites), and it is a totally random experience for my users. (ie, one person works perfectly fine all day, while another is down all day. One person experiences the issue in the morning while another experiences it in the afternoon).
I have run virus checks on the computer in question as well as the sole server we have on site. I have rebooted the network and local firewall. The only change we have made that helped for about two weeks was when we upgraded our network from a 100 meg to 200 meg connection. That required a network hardware upgrade and the site worked after this (for about 2 to 3 weeks). I think it may have been a week or two previous that it started giving me 522 errors again.
Granted, the systems we have in place have been here for more than five years and we have been using Sycamore Schools for all that time. Nothing has been changed code-wise in either the network or server before this issue began (I was in quarantine when the issue originally started, and I am the only one who has access to the network)… It is both random how often and how quickly it comes and goes. All my trace routes have shown decent times and traffic, and I never seem to have an issue pinging the server IP address even when having issues. My bandwidth is not being throttled and this happens regardless of the day or number of people on at the time. It is just completely random.
Oh yeah, and we are the only school in their entire system reporting this issue.
I am currently working with my network provider to get a network connection outside of my firewall as one last test. Has anyone experienced an issue like this in the past?