Many requests from Sweden/Netherlands/Belgium fail with 502 error

[radomir]

Hi,

After user's complain, we've found that there's an issue with access to our GAE application from Sweden/Netherlands/Belgium.

Pingdom logs show that, starting yesterday, about 50% (more or less, depending on time of the day) of requests sent from their servers in Sweden and Netherlands fail with 502 error. (We test access to application which is behind CloudFlare but also directly on appspot.com and both show error 502.)

Any idea? Does anyone else see this issue?

Thanks,

Radomir

[Takashi Matsuo]

Hi Radomir, 

Can you file a production issue with more details(app-id, source ip addresses, time of the occurrence, etc)?

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[radomir]

Hi Takashi,

So far we've tracked down the issue to CloudFlare. I spoke too early about the access to appspot.com - after the first few tests failed, we didn't see any more failures accessing appid.appspot.com. However, the route that goes through CloudFlare has about 50% of failures when accessed from Sweden and Netherlands. By the logs, the problem escalated 10/3. Not sure if it's solely CF's issue or something between Google and CF.

Let me know if you need any additional details.

Thanks,

Radomir

[Takashi Matsuo]

Hi Radomir, 

I won't take any action for now then. Thanks for the updates.

Once it turns out that App Engine has an issue, please file a production issue with details at:

http://code.google.com/p/googleappengine/issues/list

Thanks,

-- Takashi

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