Negative flow fencing demo

by beekhof 3 years ago

macOS ◆ xterm-256color ◆ bash 139 views

Demonstration showing our ability to handle errors that are not resolved by reboot.

Flow:

Disable kubelet on worker-1
MachineHealthCheck detects the failure and places the external remediation annotation
Metal3 actuator saves the existing Node labels and annotations
Metal3 actuator requests the node be power cycled
Node does not return to a healthy state within the expected 10 minutes
Metal3 actuator deletes the Node and Machine, causing a reprovisioning cycle
Replacement Machine is added to the cluster
(Not shown) Metal3 actuator restores labels and annotations

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