[Krydos] Johnny not responding to PHP

[freelio]

When I hit sites that use PHP, I get a 504 Gateway Time-out from nginx.  Started about an hour ago.

Edited 3 hours ago by freelio

[freelio]

Now it's 502 Bad Gateway.

[jchal]

Also getting 502 Bad Gateway or 504 Gateway Timeout - not necessarily PHP related - just for a regular static HTML page.

[wolstech]

Appears to be working again.

Keep in mind that these errors are normal during Apache restarts on Johnny (502) and Tommy (appears as a 504 instead of a 502), and can last  up to 10 minutes. Apache restarts occur about every 2 hours. https://wiki.helionet.org/502_Bad_Gateway

Morty users don't experience these because the restarts complete in seconds due to the server being both much faster/newer, and less crowded.

[freelio]

I have doubts that this was simply a routine restart symptom: 

1. The error was a 504 timeout (not 502 until right before it started working again) and it was on Johnny
2. It lasted for about an hour
3. Right before it started working, plain HTTP non-PHP sites briefly gave errors, as @jchal reported

I've grown accustomed to the periodic mini-outages of PHP sites on Johnny.  This was a different error and much longer, which is why I reported it.

[wolstech]

A 504 on Johnny usually means the server is overloaded or a script that is too heavy or broken (it's caused by a timeout due to something that can't finish fast enough). Could be anything from DDoS to someone else overusing resources.

Lets see if Krydos might have more information on what happened, as the load charts I can see on our side only show the past hour...