[Release-1.25] - [RFE] Mechanism to easily determine etcd node health/voter status

[vitorsavian]

Backport fix for [RFE] Mechanism to easily determine etcd node health/voter status

• [RFE] Mechanism to easily determine etcd node health/voter status #8033

[ShylajaDevadiga]

Validated using commit if on k3s version v1.25.16+k3s-c8165989

Display etcd node health/voter status

> kubectl get node $IP -o=jsonpath='Node Name: {.metadata.name}{"\n"}Conditions:{"\n"}{range .status.conditions[*]}- Type: {.type}{"\n"}  Status: {.status}{"\n"}  LastHeartbeatTime: {.lastHeartbeatTime}{"\n"}  LastTransitionTime: {.lastTransitionTime}{"\n"}  Reason: {.reason}{"\n"}  Message: {.message}{"\n\n"}{end}'
Node Name: ip-172-31-5-65
Conditions:
- Type: MemoryPressure
  Status: False
  LastHeartbeatTime: 2023-11-22T21:36:49Z
  LastTransitionTime: 2023-11-22T20:45:55Z
  Reason: KubeletHasSufficientMemory
  Message: kubelet has sufficient memory available

- Type: DiskPressure
  Status: False
  LastHeartbeatTime: 2023-11-22T21:36:49Z
  LastTransitionTime: 2023-11-22T20:45:55Z
  Reason: KubeletHasNoDiskPressure
  Message: kubelet has no disk pressure

- Type: PIDPressure
  Status: False
  LastHeartbeatTime: 2023-11-22T21:36:49Z
  LastTransitionTime: 2023-11-22T20:45:55Z
  Reason: KubeletHasSufficientPID
  Message: kubelet has sufficient PID available

- Type: Ready
  Status: True
  LastHeartbeatTime: 2023-11-22T21:36:49Z
  LastTransitionTime: 2023-11-22T20:45:56Z
  Reason: KubeletReady
  Message: kubelet is posting ready status. AppArmor enabled

- Type: EtcdIsVoter
  Status: True
  LastHeartbeatTime: 2023-11-22T20:46:14Z
  LastTransitionTime: 2023-11-22T20:46:14Z
  Reason: MemberNotLearner
  Message: Node is a voting member of the etcd cluster