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This commit enhances the node removal playbook's reliability and safety by implementing the following changes: 1. **Node Validation**: Added a validation step using assert to ensure the `node` variable is defined and contains nodes. If the list is empty or undefined, the playbook fails early, preventing accidental operations on the entire cluster. 2. **Removed Defaulting for Hosts**: Updated tasks to enforce explicit `node` variable input without defaulting to critical groups (e.g., `etcd:k8s_cluster:calico_rr`). By validating `node` beforehand, tasks now solely rely on user-provided input and safely avoid unintended targeting. 3. **Explicit User Confirmation**: Enhanced the confirmation prompt to clarify the scope of the operation. The admin is now required to explicitly confirm node state deletion, ensuring a deliberate decision before proceeding. These improvements strengthen the reliability and safety of the `remove-node.yml` playbook by eliminating ambiguous behavior, preventing misconfigurations, and ensuring clear interaction during node removal tasks.pull/12088/head
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