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Add troubleshooting item for kubeadm cluster upgrade

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ZhiFeng1993 2020-07-27 15:08:35 -07:00
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commit 876e66a45a
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content/en/docs/setup/production-environment/tools/kubeadm/troubleshooting-kubeadm.md
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@ -403,4 +403,8 @@ nodeRegistration:
Alternatively, you can modify `/etc/fstab` to make the `/usr` mount writeable, but please
be advised that this is modifying a design principle of the Linux distribution.
## `kubeadm upgrade plan` prints out `context deadline exceeded` error message
This error message is shown when upgrading a Kubernetes cluster with `kubeadm` in the case of running an external etcd. This is not a critical bug and happens because older versions of kubeadm perform a version check on the external etcd cluster. You can proceed with `kubeadm upgrade apply ...`.
This issue is fixed as of version 1.19.