522 and 523 time out errors

[gujingc]

Hi,

We are seeing a very interesting issue.

We are testing our multisite solution. Our sub sites have 2 types of URLs:

• Some will use a subdirectory. A good example is https://staging.strokefocus.net/monday
• Some will map to a custom domain, like: https://staging.wohaula.net

We found that whenever we map a subsite to a custom domain it will slow down significantly. And often we run into 522 and 523 errors.

This very seldom happens to subsites using our domain.

We have placed our main domain behind Sucuri DNS while keeping the custom domains on Cloudflare.

Any insights what might go wrong?

Sucuri DNS is not free, but their firewall is a better deal.

Thanks a lot for any insights you can provide.

Jing

[dmz]

Hi @gujingc,

Take a look at these two #CommunityTip on reported errors:

Community Tip - Fixing Error 522: Connection timed out

Error Try the suggestions in this Community Tip to help you fix Error 522 “ERR CONNECTION TIMED OUT” in Google Chrome or “The connection has timed out” in Firefox. Background A 522 error happens when a TCP connection to the web server could not be established. This typically happens when Cloudflare requests to the origin (your webserver) get blocked. When this happens, you’ll see “ERR_CONNECTION_TIMED_OUT”. Quick Fix Ideas Make sure that you’re not blocking Cloudflare IPs in .htaccess, ip…

Community Tip - Fixing Error 523: Origin is unreachable

Error Try the suggestions in this Community Tip to help you fix “Error 523: Origin is unreachable”. Background Error 523 indicates that there is an issue in the origin web server and it has become unreachable. The most common cause is that your DNS settings are incorrect. When this happens, you’ll see “Error 523: Origin is unreachable”. Cloudflare Diagnostic Center Checks: nameservers, DNSSEC, DS record configuration, if connecting to ‘domain.com’ works, if connecting to ‘www.domain.com’ wo…

Unfortunately, I won’t be able to help you with the non Cloudflare issues.

[gujingc]

Thank you so much!