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I finally found a comprehensive guide by SUSE on this. https://www.suse.com/support/kb/doc/?id=000020031#:~:text=Shutting%20down%20the%20etcd%20nodes&te[…]cker%20stop,the%20system%20sudo%20shutdown%20now I was able to shutdown all VM in an orderly manner, with downstream clusters VMs first and then Rancher and it worked following the guidelines may be a safer option