Add event for remediation in MachineHealthCheck

Signed-off-by: nayuta-ai <nayuta723@gmail.com>

Author: nayuta723

internal/controllers/machinehealthcheck/machinehealthcheck_controller.go

@@ -539,6 +539,14 @@ func (r *Reconciler) patchUnhealthyTargets(ctx context.Context, logger logr.Logg
 			klog.KObj(t.Machine),
 			klog.KObj(t.MHC),
 		)
+		// Record event on MachineHealthCheck to track remediation history
+		r.recorder.Eventf(
+			m,
+			corev1.EventTypeNormal,
+			EventRemediationTriggered,
+			"Triggered remediation for unhealthy Machine %s",
+			klog.KObj(t.Machine),
+		)
 	}
 	return errList
 }

internal/controllers/machinehealthcheck/machinehealthcheck_targets.go

@@ -45,6 +45,8 @@ const (
 
 	// EventMachineMarkedUnhealthy is emitted when machine was successfully marked as unhealthy.
 	EventMachineMarkedUnhealthy string = "MachineMarkedUnhealthy"
+	// EventRemediationTriggered is emitted when MachineHealthCheck triggers remediation for an unhealthy machine.
+	EventRemediationTriggered string = "RemediationTriggered"
 )
 
 var (