Getting a lot of errors currently

[jedidia]

About 2 days ago, I started having issues with loading the forum. Specifically, I would sometimes get held up by cloudflare, telling be there's been a "host error". The error apparently being status 521 (webserver is down).
I can usually refresh and get the forum loaded, and the whole thing would barely be worth mentioning, if it wouldn't occur with increasing frequency. Today I'm getting that error I'd estimate about 80 of the time. So whatever it is, it seems to be getting worse.

 

[DaveS]

I can confirm this problem. I have also alerted Xyon to it in official O-F Discord server.

 

[Lucy]

Yeah, I'm doing my best to track it down, but it's proving difficult - especially since I'm not seeing the errors myself, for whatever reason.

 

[Lucy]

This seems to have been resolved by... paying cloudflare some money. Which suggests the errors were perhaps due to cloudflare quietly deciding we'd outstayed our welcome on their free plan.

 

[nbcfrosty]

An intermittent 521 from cloudflare suggests the forum web servers are struggling, potentially due to too many inbound simultaneous requests. Could be worth it to check web server resource usage and to scale up.

 

[DaveS]

They're back:

 

[kuddel]

Jepp! Here too (Germany that is)

 

[Eddie C.]

Same here. A refresh usually gets it resolved, for a moment. Then stuck again while trying any action in the forum (like/edit/reply)

 

[nbcfrosty]

Site is unusable today.

 

[Lucy]

Yeah, it's being looked at. Nothing changed on our side; we don't, equally, appear to be under attack and the server is not load shedding. It seems more insidious than that.

 

[nbcfrosty]

The issue is most likely the digitalocean web servers serving xenforo or the database. You can check cpu load averages on the web servers+mysql server. The fact that it gets worse during certain times is smoking gun pointing towards either web servers or the database.

 

[Lucy]

The issue is most likely the digitalocean web servers serving xenforo or the database. You can check cpu load averages on the web servers+mysql server. The fact that it gets worse during certain times is smoking gun pointing towards either web servers or the database.

Yeah, was the first series of things I checked, the load on the server is well within its resource headroom. It's intermittent communication between cloudflare and the origin.

 

[Lucy]

I just made a change to the origin connectivity for IPv6 - something I must've overlooked when originally configuring this, somehow, and every time I've looked since. I haven't seen a 521 on my end since I did that, but do let me know if you catch another.

In some ways, I'd be obliged if my inability to read a config file wasn't the root cause here, but I'll take what I can get if it comes up fixed.

 

[Fabri91]

So far so good, haven't had a single error since yesterday.