Improve MachineHealthCheck event messages

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

Author: nayuta723

internal/controllers/machinehealthcheck/machinehealthcheck_controller.go

@@ -535,16 +535,15 @@ func (r *Reconciler) patchUnhealthyTargets(ctx context.Context, logger logr.Logg
 			t.Machine,
 			corev1.EventTypeNormal,
 			EventMachineMarkedUnhealthy,
-			"Machine %s has been marked as unhealthy by %s",
-			klog.KObj(t.Machine),
+			"Marked as unhealthy by MachineHealthCheck %s",
 			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",
+			EventMachineMarkedUnhealthy,
+			"Observed machine %s is now marked as unhealthy",
 			klog.KObj(t.Machine),
 		)
 	}

internal/controllers/machinehealthcheck/machinehealthcheck_targets.go

@@ -45,8 +45,6 @@ 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 (