Hmm, ok, with help from this post <https://groups.google.com/g/google-appengine/c/kAgs8l2_bcE/m/UtXQYMkRAwAJ> I was able to find the 500 error. It was on /_ah/warmup and didn't show as an error or warning in the logs. I'm not sure why it would have returned an error (all that endpoint does is return a 200, so the instance must have just failed to boot somehow, but there's nothing useful in the logs).
Now I'm trying to figure out how I could filter out errors on warmup calls, since I don't think there's anything I could possibly do to prevent these errors. I would have thought that would count as a "loading" response if anything did, but I guess not. On Friday, April 22, 2022 at 12:53:06 PM UTC-4 Alan deLespinasse wrote: > Hi, I'm trying to debug an alert I have set up. It's a pretty low volume > service, App Engine standard environment, Python 3.x. > > It's supposed to raise an alert any time there's a 500 response or higher > on a query. I've occasionally been getting alerts, but then have been > unable to find any 5xx errors in the logs. > > The alert configuration looks like this: > [image: GAEalert1.png] > --- > [image: GAEalert2.png] > I don't remember why I set the function to "rate" instead of "count", but > as far as I can tell it shouldn't make a difference. The threshold is zero, > so it should trigger if (and, I would hope, only if) there are any 500x > errors > > I didn't have the "loading = false" filter when I first set it up > (sometime last year), but I got a few random alerts when nothing seemed > wrong, and the "loading = false" filter seemed to fix it at the time. I was > never clear on why (I assume "loading" means that the request was handled > by a new instance that was not yet done booting up when the request came > in, or something like that). > > It's only in the last couple months, I think, that I've started getting > these spurious alerts again. > > Am I doing something wrong? > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/086cb7a0-8e91-4cbd-96ed-48b6d5c598d3n%40googlegroups.com.
