i'm trying to set up a rke cluster, the connection to the nodes goes well but when it starts to check etcd health returns: failed to check etcd health: failed to get /health for host [xx.xxx.x.xxx]: Get "https://xx.xxx.x.xxx:2379/health": remote error: tls: bad certificate
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If you are trying to upgrade the RKE and facing this issue then it could be due to the missing of kube_config_<file>.yml
file from the local directory when you perform rke up.
This similar kind of issue was reported and reproduced in this git link . Can you refer to the work around and reproduce it by using the steps provided in the link and let me know if this works.

Hemanth Kumar
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