Ok, first I hope I'm in the right forum to post this.
For the last days I'm getting complaints from my customer hosting their site on my server that they're getting Error 520 from Cloudflare when loading their site, but refreshing the page loads the site normally.
So at start I thought they were imaging these. But when more clients complained, I went into one of them and simply clicking links. And after 20-30 clicks I got a 520 error myself.
Here's a screenshot of the error:
https://pasteboard.co/JpZsAZG.pngSo I've tried lowering PHP versions, rebuilding the webservers, looking at the logs (couldn't find something relevant) and more... but it didn't help. Yesterday I rebooted the server and I could swear the issue was gone.
But just a few minutes again a client complained about this again. I've went to the site an encountered it myself.
By the way, yesterday before rebooting I've simply paused the use of CF for those complaining customers (coloring the cloud Gray instead of Orange) and it seemed to have fixed the issue. BUT! Then we've found out that iOS based devices got a can't load site permanently, so that wasn't a good solution either.
Trying to search some information, I've found on CF's forums the following solution:
My host had to whitelist cloudflares IP address range in order for everything to work, after they did this everything functioned normally
Any idea if that might be the solution for CWP too and how to do it? If not, any idea what might be wrong with my CWP?
FYI, my system information is (taken from CWP Pro dashboard):
Hosted on: Hetzner
CPU Model: AMD EPYC Processor (with IBPB)
CPU Details: 4 Core (2495 MHz)
Distro Name: CentOS Linux release 7.8.2003 (Core) [updated all updates]
Kernel Version: 3.10.0-1127.19.1.el7.x86_64
Platform: x86_64
CWPpro version: 0.9.8.1006
Apache version: Apache/2.4.39
PHP version: 7.3.18
MySQL version: 10.1.46-MariaDB
Topic: Error 520 from Cloudflare (Read 8519 times)
