163b848abe
Automatic merge from submit-queue (batch tested with PRs 59965, 59115, 63076, 63059). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. kubeadm: prompt for confirmation when resetting a master Signed-off-by: Alexander Brand <alexbrand09@gmail.com> **What this PR does / why we need it**: This PR implements a confirmation prompt when running `kubeadm reset` on a master node. This is to prevent users from mistakenly resetting a master node. **Which issue(s) this PR fixes**: Fixes https://github.com/kubernetes/kubeadm/issues/673 **Special notes for your reviewer**: I am somewhat torn on the approach on how to detect that kubeadm is running on a master node. I went with checking for the apiserver manfiest file on the local filesystem, as it seems like a simpler approach when compared to getting a k8s client, getting a list of nodes, finding the current node, and checking if it has the master taint. I am happy to rework if the latter is more desirable. Sample runs: ``` # ./kubeadm reset [Warning] Are you sure you want to reset this master node? Type the word "confirm" to continue: no Aborted reset operation on master node # ./kubeadm reset [Warning] Are you sure you want to reset this master node? Type the word "confirm" to continue: confirm [preflight] Running pre-flight checks. [reset] Stopping the kubelet service. [reset] WARNING: The kubelet service could not be stopped by kubeadm: [exit status 1] [reset] WARNING: Please ensure kubelet is stopped manually. [reset] Unmounting mounted directories in "/var/lib/kubelet" ........ # ./kubeadm reset [Warning] Are you sure you want to reset this master node? Type the word "confirm" to continue: Aborted reset operation on master node # ./kubeadm reset --confirm [preflight] Running pre-flight checks. [reset] Stopping the kubelet service. [reset] WARNING: The kubelet service could not be stopped by kubeadm: [exit status 1] [reset] WARNING: Please ensure kubelet is stopped manually. [reset] Unmounting mounted directories in "/var/lib/kubelet" ........ ``` **Release note**: ```release-note kubeadm: prompt the user for confirmation when resetting a master node ``` |
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Kubernetes
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