Wednesday, October 04, 2017
upgrading kubernetes - container pods stuck in state 'unknown'
I deleted an old pod that was sticking in our cluster without explanation and it turned into state 'unknown'. Getting logs from nodejs apps was impossible, in fact 'kubectl exec' hanged ssh sessions. I remember that I saw errors like these (pods reluctant to be deleted) when GKE was expecting a k8s upgrade. So I did and the issue got resolved.