Add logs for instance type filtering

pkg/cloudprovider/cloudprovider.go

@@ -87,6 +87,7 @@ func (c *CloudProvider) Create(ctx context.Context, nodeClaim *corev1beta1.NodeC
 		return nil, cloudprovider.NewInsufficientCapacityError(fmt.Errorf("resolving node class, %w", err))
 	}
 	instanceTypes, err := c.resolveInstanceTypes(ctx, nodeClaim, nodeClass)
+	logging.FromContext(ctx).With("instanceTypes", utils.PrettySlice(utils.GetInstanceNameFromInstanceType(instanceTypes), 5)).Debugf("resolved instance types from nodeclass")
 	if err != nil {
 		return nil, fmt.Errorf("resolving instance types, %w", err)
 	}

pkg/providers/instance/instance.go

@@ -86,6 +86,7 @@ func (p *Provider) Create(ctx context.Context, nodeClass *v1beta1.EC2NodeClass,
 	// Only filter the instances if there are no minValues in the requirement.
 	if !schedulingRequirements.HasMinValues() {
 		instanceTypes = p.filterInstanceTypes(nodeClaim, instanceTypes)
+		logging.FromContext(ctx).With("instanceTypes", utils.PrettySlice(utils.GetInstanceNameFromInstanceType(instanceTypes), 5)).Debugf("filtered instance types after removing exotic types and spot instance types costlier than cheapest on-demand")
 	}
 	tags := getTags(ctx, nodeClass, nodeClaim)
 	fleetInstance, err := p.launchInstance(ctx, nodeClass, nodeClaim, instanceTypes, tags)

pkg/utils/utils.go

@@ -19,6 +19,8 @@ import (
 	"regexp"
 	"strings"
 
+	"sigs.k8s.io/karpenter/pkg/cloudprovider"
+
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/service/ec2"
 	"github.com/samber/lo"
@@ -66,3 +68,11 @@ func PrettySlice[T any](s []T, maxItems int) string {
 	}
 	return sb.String()
 }
+
+func GetInstanceNameFromInstanceType(instanceTypes []*cloudprovider.InstanceType) []string {
+	var names []string
+	for _, val := range instanceTypes {
+		names = append(names, val.Name)
+	}
+	return names
+}