Thursday, September 28, 2017

[google-cloud-sql-discuss] Re: Sporadic connection errors (tcp i/o timeout; cannot fetch oauth token; connection refused)

Hi David,

The fact that the issue is intermittent will make it difficult to troubleshoot.  Your issue is similar to the ones discussed here [1][2]. In one of them the issue was transient, in the other it was solved by upgrading the cluster. So make sure you are using the latest node images and Kubernetes releases.

One step to debug could be to create another cluster and see if the timeouts happens at the same time.  To isolate networking issues you could spin the cluster in the closest region where you have the SQL instance.



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