Azure Functions
An Azure service that provides an event-driven serverless compute platform.
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Same here. Issues in North Europe but moving instance to West Europe helped
How to fix getaddrinfo ENOTFOUND DNS issue on Node.js Azure Functions App?
Tommi Laukkanen
115
Reputation points
We are trying to call external Azure App Service from our Node.js Azure Functions app. We have these ENOTFOUND errors in couple of environments in North Europe where it can't resolve the address for given URL eventhough it is available and can be used without issues from local laptops or other environments. Are there some known DNS issues with Node.js Azure Functions Apps? Any ideas how to troubleshoot this better if this is caused by App Plan server that is hosting the functions app?
Exception while executing function: Functions.OurFunction Result: Failure
Exception: getaddrinfo ENOTFOUND our-other-site.azurewebsites.net
Stack: Error: getaddrinfo ENOTFOUND our-other-site.azurewebsites.net
at GetAddrInfoReqWrap.onlookup [as oncomplete] (node:dns:108:26)
Note: we have real site in place of "our-other-site" that actually exists.
If I login to the Function App server with Development Tools > SSH and try e.g. nslookup it does return the IP address etc. without issues.
Azure Functions
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Anonymous2023-10-18T14:46:31.48+00:00 We have the same problems in 4 of our apps. It all started today, and approximately 30% of our requests to our other app-services fail with the same error. Have been in contact with Azure support which first told us there was a data-center issue
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Anton Malmberg 5 Reputation points2023-10-18T15:39:03.23+00:00 We experience the same problem in the same data center (EUN).
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Holmes, Stephen 5 Reputation points2023-10-18T15:47:23.3033333+00:00 We've been having a similar problem with some of our app services running in EUN for about 12 hours
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Keith 5 Reputation points2023-10-18T16:06:18.6833333+00:00 We are having the same issue on multiple app services running in north Europe. I tried running some test requests under different versions of node, but got the same intermittant error on each node version. This is a critical issue for us. Is it possible to by-pass azure dns and use an alternate service?
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Neil 5 Reputation points2023-10-18T22:04:06.8966667+00:00 I'm seeing something similar in WUS2 (started at 2am central us time). Is everyone else in north Europe Azure Region?
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Anonymous
2023-10-19T08:59:40.3433333+00:00 Everything self-healed for us during the night. So I guess they found and solved the underlying issue
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Neil 5 Reputation points
2023-10-19T17:47:08.0566667+00:00 In case anyone else is following the issue is not resolved for my service hosted in WUS2.
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Christian Roy 5 Reputation points2023-10-23T15:33:25.15+00:00 For us, the issue seem to have been resolved on it's own on Sunday around noon in America. Anyone else?
Did Azure acknowledge any issues that you are aware of? I do not see anything in the "Azure status history" (from https://azure.status.microsoft/en-us/status)If azure was having issues and they fixed it but never reported it or never acknowledged it, that's concerning.
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Neil 5 Reputation points
2023-10-23T19:55:28.6366667+00:00 This issue resolved itself on the 21st at 10:30 am central time. I'm told that Azure has claimed responsibility and they will share RCA with us when they can.
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Tom Frenzel 0 Reputation points2023-11-16T14:47:56.27+00:00 For us, the issue still persists. But it is kind of flaky since sometimes our function runs through, but sometimes it fails with the ENOTFOUND error.
I also noticed that using HTTP triggers, the error occurs very rarely but when using a timed trigger, the error occurs almost always
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Accepted answer
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Mirosław Jedynak 80 Reputation points2023-10-18T18:13:02.7933333+00:00 -
Tommi Laukkanen 115 Reputation points
2023-10-19T05:58:40.81+00:00 I think your answer is kinda valid and would fix the issue - marking that as accepted answer. Also "contact Microsoft support" might be the other as it does seem to be internal Azure issue in North Europe :)
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MuthuKumaranMurugaachari-MSFT 22,441 Reputation points Moderator2023-10-20T13:54:51.5666667+00:00 Tommi Laukkanen Sorry for the delay in response. This issue was impacted in North Europe, West US regions and our product team has mitigated the issue (as of 10/19 21:10 Eastern). If you face any issues, please let us know.
Sorry for the inconvenience caused by this issue.
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Tommi Laukkanen 115 Reputation points
2023-10-20T15:27:50.0133333+00:00 No worries @MuthuKumaranMurugaachari-MSFT - Thanks for official update on this!
Thanks for community members for responding quickly to realise that this wasn't something in our services alone 🙏
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Anonymous
2023-10-30T14:25:55.3633333+00:00 We're facing the some issue starting about 10/19 also in North Europe. And similarly we tried setting up the app service in West Europe, which worked fine.
Is this issue still ongoing in North Europe? @MuthuKumaranMurugaachari-MSFT
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MuthuKumaranMurugaachari-MSFT 22,441 Reputation points Moderator
2023-10-30T19:39:35.34+00:00 Jan-Hendrik Schmid This issue was mitigated and let us know if you still face the issue.
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