hot fix: remove NodeUninitializedTaint from worker nodes once node is initialized by CAPI

Author: Kun483

internal/controllers/machine/machine_controller_noderef.go

@@ -24,6 +24,7 @@ import (
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/klog/v2"
+	"sigs.k8s.io/cluster-api/internal/util/taints"
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 
@@ -116,6 +117,11 @@ func (r *Reconciler) reconcileNode(ctx context.Context, cluster *clusterv1.Clust
 		}
 	}
 
+	// Reconcile node taints
+	if err := r.reconcileNodeTaints(ctx, remoteClient, node); err != nil {
+		return ctrl.Result{}, errors.Wrapf(err, "failed to reconcile taints on Node %s", klog.KObj(node))
+	}
+
 	// Do the remaining node health checks, then set the node health to true if all checks pass.
 	status, message := summarizeNodeConditions(node)
 	if status == corev1.ConditionFalse {
@@ -212,3 +218,17 @@ func (r *Reconciler) getNode(ctx context.Context, c client.Reader, providerID *n
 
 	return &nodeList.Items[0], nil
 }
+
+func (r *Reconciler) reconcileNodeTaints(ctx context.Context, remoteClient client.Client, node *corev1.Node) error {
+	patchHelper, err := patch.NewHelper(node, remoteClient)
+	if err != nil {
+		return errors.Wrapf(err, "failed to create patch helper for Node %s", klog.KObj(node))
+	}
+	// Drop the NodeUninitializedTaint taint on the node.
+	if taints.RemoveNodeTaint(node, clusterv1.NodeUninitializedTaint) {
+		if err := patchHelper.Patch(ctx, node); err != nil {
+			return errors.Wrapf(err, "failed to patch Node %s to modify taints", klog.KObj(node))
+		}
+	}
+	return nil
+}