School-district VMs were cloned with duplicate hostnames and overlapping machine-ids before join. What should admins fix first?
Select an answer to reveal the explanation.
Short Explanation
Cloned VMs with the same nametag confuse the attendance sheet. Give each node a unique hostname and machine identity before kubeadm join. Duplicate IDs cause messy node objects—not something you paper over by turning off TLS.
Full Explanation
Each Kubernetes node needs a distinct identity; cloned images often reuse hostnames and /etc/machine-id, which leads to join conflicts or flapping Node objects. Correct uniqueness on the OS before joining. Changing apiserver rate limits or disabling TLS does not fix identity collisions, and forcing identical hostname labels worsens the problem.