Confirm your hosting provider allows Cloudflare IP addresses.
action performed: I allowlisted the Cloudflare IPs
An overloaded or offline origin web server drops incoming requests.
hosting checked for me and there was no problem on the server
Keepalives are disabled at the origin web server.
action performed: verify the keep alive on both litespeed and apache, they are both enabled
The origin IP address in your Cloudflare DNS app does not match the IP address currently provisioned to your origin web server by your hosting provider.
verified that cloudflre DNS point to 89.34.17.197
Cloudflare DNS is returning both IPv4 and IPv6 A/AAAA records:
Configured IP: 89.34.17.197 A Record: 172.67.73.19 A Record: 104.26.5.211 A Record: 104.26.4.211
AAAA Record: 2606:4700:20::ac43:4913
AAAA Record: 2606:4700:20::681a:5d3
AAAA Record: 2606:4700:20::681a:4d3
The server is not configured for IPv6
traceroute
[root@elated-glue ~]# traceroute 172.67.73.19
traceroute to 172.67.73.19 (172.67.73.19), 30 hops max, 60 byte packets
1 185.67.44.50 (185.67.44.50) 0.479 ms 0.739 ms 1.011 ms
2 lw-dc5-core2.rtr.liquidweb.com (185.67.44.12) 1.230 ms lw-dc5-core1.rtr.liquidweb.com (185.67.44.6) 1.342 ms 1.374 ms
3 lw-dc5-core2-asr.rtr.liquidweb.com (185.67.44.28) 1.346 ms lw-ams-border1.rtr.liquidweb.com (185.67.44.30) 1.408 ms 1.543 ms
4 69.167.128.109 (69.167.128.109) 1.259 ms 1.253 ms 1.248 ms
5 * * *
6 141.101.65.2 (141.101.65.2) 1.369 ms 141.101.65.103 (141.101.65.103) 9.166 ms 141.101.65.113 (141.101.65.113) 1.540 ms
7 172.67.73.19 (172.67.73.19) 1.318 ms 1.334 ms 1.285 ms
What are the steps to reproduce the issue?
it happens randomly so it is not possible to list the steps to reproduce it
I have checked the error logs for your domain on Cloudflare for the last 24 hours, and I can see that 522 errors are occurring, which means we are unable to connect to your origin.
I have run repeated TCP connection tests to the location where we saw the errors.
What is interesting here is that the IPs that fail are consistent each time. For your reference, here are the top IPs of ours that experienced these errors in the last 24H:
This is a clear indication that some of the IPs in Cloudflare’s IP ranges are either being rate-limited or blocked by a network device at your hosting provider. Because Cloudflare operates as a reverse proxy, the IP address your server will see is one of a limited number of Cloudflare IPs. In that sense, many actual visitors may all come from the same IP address, which can cause firewalls or security software that is not appropriately allowlisting the Cloudflare IP ranges to block this traffic as it may see it as excessive or malicious. We publish a full list of our IP ranges here so that you can allowlist:
I would make sure that your hosting provider confirms that the Cloudflare IP ranges listed in the URL above are fully allowlisted from any security software, firewall, etc., to ensure there is no rate limiting or blocking of our edge servers.
This should ensure that Cloudflare can consistently make a connection to your origin server to retrieve content and serve it to your visitors.
Hi Dmartin1,
a few days are passed and we implemented several allowlist and ignore instructions on Cloudflare IPs.
Hosting support is requesting to ask you if you can check the recent logs and tell us what is still causing the error on your side.
Can you please help us again?
regards,
Giulio
are disabled at the origin web server.