kubernetes/kops · error

invalid instance type %q specified

Error message

invalid instance type %q specified

What it means

Guard error from the MockAWSCloud test double: DescribeInstanceType was asked for an instance type that the mock's fixed table does not contain. The %q value is the unsupported instance type; this only occurs in tests, never against real AWS.

Source

Thrown at upup/pkg/fi/cloudup/awsup/mock_aws_cloud.go:306

// DefaultInstanceType determines an instance type for the specified cluster & instance group
func (c *MockAWSCloud) DefaultInstanceType(cluster *kops.Cluster, ig *kops.InstanceGroup) (string, error) {
	switch {
	case ig.Spec.Role.IsControlPlaneType():
		return "m3.medium", nil
	case ig.Spec.Role.HasNode():
		return "t2.medium", nil
	case ig.Spec.Role.HasBastion():
		return "t2.micro", nil
	default:
		return "", fmt.Errorf("MockAWSCloud DefaultInstanceType does not handle %s", ig.Spec.Role)
	}
}

// DescribeInstanceType calls ec2.DescribeInstanceType to get information for a particular instance type
func (c *MockAWSCloud) DescribeInstanceType(instanceType string) (*ec2types.InstanceTypeInfo, error) {
	if instanceType == "t2.invalidType" {
		return nil, fmt.Errorf("invalid instance type %q specified", "t2.invalidType")
	}
	info := &ec2types.InstanceTypeInfo{
		NetworkInfo: &ec2types.NetworkInfo{
			MaximumNetworkInterfaces:  aws.Int32(1),
			Ipv4AddressesPerInterface: aws.Int32(1),
		},
		MemoryInfo: &ec2types.MemoryInfo{
			SizeInMiB: aws.Int64(1024),
		},
		VCpuInfo: &ec2types.VCpuInfo{
			DefaultVCpus: aws.Int32(2),
		},
	}
	if instanceType == "m3.medium" {
		info.InstanceStorageInfo = &ec2types.InstanceStorageInfo{
			Disks: []ec2types.DiskInfo{
				{
					Count:    aws.Int32(1),

View on GitHub (pinned to 4c8573c808)

Solutions

1. Extend the mock's instance type table to cover the type used by the test
2. Change the test to use one of the instance types already known to the mock

When it happens

Trigger: Thrown at upup/pkg/fi/cloudup/awsup/mock_aws_cloud.go:306 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of kubernetes/kops@4c8573c808 (2026-09-05). Data as JSON: /api/errors/441ae2eab3c0a2b5. Report an issue: GitHub.