Stuck kubelet on the Cluster release 5.x.x series¶
Occasionally, kubelet may get stuck on the Cluster release 5.x.x series
with different errors in the ucp-kubelet
containers leading to the nodes
failures. The following error occurs every time when accessing
the Kubernetes API server:
an error on the server ("") has prevented the request from succeeding
To apply the issue resolution, restart ucp-kubelet
on the failed node:
ctr -n com.docker.ucp snapshot rm ucp-kubelet
docker rm -f ucp-kubelet