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cluster.go
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cluster.go
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package v1alpha1
import (
"bufio"
"bytes"
"context"
"errors"
"fmt"
"io"
"net"
"net/url"
"os"
"regexp"
"strconv"
"strings"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/validation"
utilerrors "k8s.io/apimachinery/pkg/util/errors"
"k8s.io/apimachinery/pkg/util/validation/field"
yamlutil "k8s.io/apimachinery/pkg/util/yaml"
"sigs.k8s.io/yaml"
"github.com/aws/eks-anywhere/pkg/constants"
"github.com/aws/eks-anywhere/pkg/features"
"github.com/aws/eks-anywhere/pkg/logger"
"github.com/aws/eks-anywhere/pkg/networkutils"
"github.com/aws/eks-anywhere/pkg/semver"
)
// constants defined for cluster.go.
const (
ClusterKind = "Cluster"
RegistryMirrorCAKey = "EKSA_REGISTRY_MIRROR_CA"
podSubnetNodeMaskMaxDiff = 16
)
var re = regexp.MustCompile(constants.DefaultCuratedPackagesRegistryRegex)
// +kubebuilder:object:generate=false
type ClusterGenerateOpt func(config *ClusterGenerate)
// Used for generating yaml for generate clusterconfig command.
func NewClusterGenerate(clusterName string, opts ...ClusterGenerateOpt) *ClusterGenerate {
clusterConfig := &ClusterGenerate{
TypeMeta: metav1.TypeMeta{
Kind: ClusterKind,
APIVersion: SchemeBuilder.GroupVersion.String(),
},
ObjectMeta: ObjectMeta{
Name: clusterName,
},
Spec: ClusterSpec{
KubernetesVersion: GetClusterDefaultKubernetesVersion(),
ClusterNetwork: ClusterNetwork{
Pods: Pods{
CidrBlocks: []string{"192.168.0.0/16"},
},
Services: Services{
CidrBlocks: []string{"10.96.0.0/12"},
},
CNIConfig: &CNIConfig{Cilium: &CiliumConfig{}},
},
},
}
clusterConfig.SetSelfManaged()
for _, opt := range opts {
opt(clusterConfig)
}
return clusterConfig
}
func ControlPlaneConfigCount(count int) ClusterGenerateOpt {
return func(c *ClusterGenerate) {
c.Spec.ControlPlaneConfiguration.Count = count
}
}
func ExternalETCDConfigCount(count int) ClusterGenerateOpt {
return func(c *ClusterGenerate) {
c.Spec.ExternalEtcdConfiguration = &ExternalEtcdConfiguration{
Count: count,
}
}
}
func WorkerNodeConfigCount(count int) ClusterGenerateOpt {
return func(c *ClusterGenerate) {
c.Spec.WorkerNodeGroupConfigurations = []WorkerNodeGroupConfiguration{{Count: &count}}
}
}
func WorkerNodeConfigName(name string) ClusterGenerateOpt {
return func(c *ClusterGenerate) {
c.Spec.WorkerNodeGroupConfigurations[0].Name = name
}
}
func WithClusterEndpoint() ClusterGenerateOpt {
return func(c *ClusterGenerate) {
c.Spec.ControlPlaneConfiguration.Endpoint = &Endpoint{Host: ""}
}
}
// WithCPUpgradeRolloutStrategy allows add UpgradeRolloutStrategy option to cluster config under ControlPlaneConfiguration.
func WithCPUpgradeRolloutStrategy(maxSurge int, maxUnavailable int) ClusterGenerateOpt {
return func(c *ClusterGenerate) {
c.Spec.ControlPlaneConfiguration.UpgradeRolloutStrategy = &ControlPlaneUpgradeRolloutStrategy{Type: "RollingUpdate", RollingUpdate: &ControlPlaneRollingUpdateParams{MaxSurge: maxSurge}}
}
}
func WithDatacenterRef(ref ProviderRefAccessor) ClusterGenerateOpt {
return func(c *ClusterGenerate) {
c.Spec.DatacenterRef = Ref{
Kind: ref.Kind(),
Name: ref.Name(),
}
}
}
func WithSharedMachineGroupRef(ref ProviderRefAccessor) ClusterGenerateOpt {
return func(c *ClusterGenerate) {
c.Spec.ControlPlaneConfiguration.MachineGroupRef = &Ref{
Kind: ref.Kind(),
Name: ref.Name(),
}
c.Spec.WorkerNodeGroupConfigurations[0].MachineGroupRef = &Ref{
Kind: ref.Kind(),
Name: ref.Name(),
}
}
}
func WithCPMachineGroupRef(ref ProviderRefAccessor) ClusterGenerateOpt {
return func(c *ClusterGenerate) {
c.Spec.ControlPlaneConfiguration.MachineGroupRef = &Ref{
Kind: ref.Kind(),
Name: ref.Name(),
}
}
}
func WithWorkerMachineGroupRef(ref ProviderRefAccessor) ClusterGenerateOpt {
return func(c *ClusterGenerate) {
c.Spec.WorkerNodeGroupConfigurations[0].MachineGroupRef = &Ref{
Kind: ref.Kind(),
Name: ref.Name(),
}
}
}
// WithWorkerMachineUpgradeRolloutStrategy allows add UpgradeRolloutStrategy option to cluster config under WorkerNodeGroupConfiguration.
func WithWorkerMachineUpgradeRolloutStrategy(maxSurge int, maxUnavailable int) ClusterGenerateOpt {
return func(c *ClusterGenerate) {
c.Spec.WorkerNodeGroupConfigurations[0].UpgradeRolloutStrategy = &WorkerNodesUpgradeRolloutStrategy{
Type: "RollingUpdate",
RollingUpdate: &WorkerNodesRollingUpdateParams{MaxSurge: maxSurge, MaxUnavailable: maxUnavailable},
}
}
}
func WithEtcdMachineGroupRef(ref ProviderRefAccessor) ClusterGenerateOpt {
return func(c *ClusterGenerate) {
if c.Spec.ExternalEtcdConfiguration != nil {
c.Spec.ExternalEtcdConfiguration.MachineGroupRef = &Ref{
Kind: ref.Kind(),
Name: ref.Name(),
}
}
}
}
var clusterConfigValidations = []func(*Cluster) error{
validateClusterConfigName,
validateControlPlaneEndpoint,
validateExternalEtcdSupport,
validateMachineGroupRefs,
validateControlPlaneReplicas,
validateWorkerNodeGroups,
validateNetworking,
validateGitOps,
validateEtcdReplicas,
validateIdentityProviderRefs,
validateProxyConfig,
validateMirrorConfig,
validatePodIAMConfig,
validateCPUpgradeRolloutStrategy,
validateControlPlaneLabels,
validatePackageControllerConfiguration,
validateEksaVersion,
validateControlPlaneCertSANs,
}
// GetClusterConfig parses a Cluster object from a multiobject yaml file in disk
// and sets defaults if necessary.
func GetClusterConfig(fileName string) (*Cluster, error) {
clusterConfig := &Cluster{}
err := ParseClusterConfig(fileName, clusterConfig)
if err != nil {
return clusterConfig, err
}
if err := setClusterDefaults(clusterConfig); err != nil {
return clusterConfig, err
}
return clusterConfig, nil
}
// GetClusterConfig parses a Cluster object from a multiobject yaml file in disk
// sets defaults if necessary and validates the Cluster.
func GetAndValidateClusterConfig(fileName string) (*Cluster, error) {
clusterConfig, err := GetClusterConfig(fileName)
if err != nil {
return nil, err
}
err = ValidateClusterConfigContent(clusterConfig)
if err != nil {
return nil, err
}
return clusterConfig, nil
}
// GetClusterDefaultKubernetesVersion returns the default kubernetes version for a Cluster.
func GetClusterDefaultKubernetesVersion() KubernetesVersion {
return Kube129
}
// ValidateClusterConfigContent validates a Cluster object without modifying it
// Some of the validations are a bit heavy and need a network connection.
func ValidateClusterConfigContent(clusterConfig *Cluster) error {
for _, v := range clusterConfigValidations {
if err := v(clusterConfig); err != nil {
return err
}
}
return nil
}
// ParseClusterConfig unmarshalls an API object implementing the KindAccessor interface
// from a multiobject yaml file in disk. It doesn't set defaults nor validates the object.
func ParseClusterConfig(fileName string, clusterConfig KindAccessor) error {
content, err := os.ReadFile(fileName)
if err != nil {
return fmt.Errorf("unable to read file due to: %v", err)
}
if err = ParseClusterConfigFromContent(content, clusterConfig); err != nil {
return fmt.Errorf("unable to parse %s file: %v", fileName, err)
}
return nil
}
type kindObject struct {
Kind string `json:"kind,omitempty"`
}
// ParseClusterConfigFromContent unmarshalls an API object implementing the KindAccessor interface
// from a multiobject yaml content. It doesn't set defaults nor validates the object.
func ParseClusterConfigFromContent(content []byte, clusterConfig KindAccessor) error {
r := yamlutil.NewYAMLReader(bufio.NewReader(bytes.NewReader(content)))
for {
d, err := r.Read()
if err == io.EOF {
break
}
if err != nil {
return err
}
k := &kindObject{}
if err := yaml.Unmarshal(d, k); err != nil {
return err
}
if k.Kind == clusterConfig.ExpectedKind() {
return yaml.UnmarshalStrict(d, clusterConfig)
}
}
return fmt.Errorf("yamlop content is invalid or does not contain kind %s", clusterConfig.ExpectedKind())
}
func (c *Cluster) PauseReconcile() {
if c.Annotations == nil {
c.Annotations = map[string]string{}
}
c.Annotations[pausedAnnotation] = "true"
}
// AllowDeleteWhilePaused adds the allow-delete-when-paused annotation to the cluster.
func (c *Cluster) AllowDeleteWhilePaused() {
if c.Annotations == nil {
c.Annotations = map[string]string{}
}
c.Annotations[AllowDeleteWhenPausedAnnotation] = "true"
}
// PreventDeleteWhilePaused removes the allow-delete-when-paused annotation to the cluster.
func (c *Cluster) PreventDeleteWhilePaused() {
if c.Annotations != nil {
delete(c.Annotations, AllowDeleteWhenPausedAnnotation)
}
}
func (c *Cluster) ClearPauseAnnotation() {
if c.Annotations != nil {
delete(c.Annotations, pausedAnnotation)
}
}
// AddManagedByCLIAnnotation adds the managed-by-cli annotation to the cluster.
func (c *Cluster) AddManagedByCLIAnnotation() {
if c.Annotations == nil {
c.Annotations = map[string]string{}
}
c.Annotations[ManagedByCLIAnnotation] = "true"
}
// ClearManagedByCLIAnnotation removes the managed-by-cli annotation from the cluster.
func (c *Cluster) ClearManagedByCLIAnnotation() {
if c.Annotations != nil {
delete(c.Annotations, ManagedByCLIAnnotation)
}
}
// AddTinkerbellIPAnnotation adds the managed-by-cli annotation to the cluster.
func (c *Cluster) AddTinkerbellIPAnnotation(tinkerbellIP string) {
if c.Annotations == nil {
c.Annotations = map[string]string{}
}
c.Annotations[tinkerbellIPAnnotation] = tinkerbellIP
}
// ClearTinkerbellIPAnnotation removes the managed-by-cli annotation from the cluster.
func (c *Cluster) ClearTinkerbellIPAnnotation() {
if c.Annotations != nil {
delete(c.Annotations, tinkerbellIPAnnotation)
}
}
// HasTinkerbellIPAnnotation returns the tinkerbell IP value if the annotation exists.
func (c *Cluster) HasTinkerbellIPAnnotation() string {
if tinkerbellIP, ok := c.Annotations[tinkerbellIPAnnotation]; ok {
return tinkerbellIP
}
return ""
}
// RegistryAuth returns whether registry requires authentication or not.
func (c *Cluster) RegistryAuth() bool {
if c.Spec.RegistryMirrorConfiguration == nil {
return false
}
return c.Spec.RegistryMirrorConfiguration.Authenticate
}
func (c *Cluster) ProxyConfiguration() map[string]string {
if c.Spec.ProxyConfiguration == nil {
return nil
}
noProxyList := append(c.Spec.ProxyConfiguration.NoProxy, c.Spec.ClusterNetwork.Pods.CidrBlocks...)
noProxyList = append(noProxyList, c.Spec.ClusterNetwork.Services.CidrBlocks...)
if c.Spec.ControlPlaneConfiguration.Endpoint != nil && c.Spec.ControlPlaneConfiguration.Endpoint.Host != "" {
noProxyList = append(
noProxyList,
c.Spec.ControlPlaneConfiguration.Endpoint.Host,
)
}
return map[string]string{
"HTTP_PROXY": c.Spec.ProxyConfiguration.HttpProxy,
"HTTPS_PROXY": c.Spec.ProxyConfiguration.HttpsProxy,
"NO_PROXY": strings.Join(noProxyList[:], ","),
}
}
func (c *Cluster) IsReconcilePaused() bool {
if s, ok := c.Annotations[pausedAnnotation]; ok {
return s == "true"
}
return false
}
func ValidateClusterName(clusterName string) error {
// this regex will not work for AWS provider as CFN has restrictions with UPPERCASE chars;
// if you are using AWS provider please use only lowercase chars
allowedClusterNameRegex := regexp.MustCompile(`^[a-zA-Z][a-zA-Z0-9-]+$`)
if !allowedClusterNameRegex.MatchString(clusterName) {
return fmt.Errorf("%v is not a valid cluster name, cluster names must start with lowercase/uppercase letters and can include numbers and dashes. For instance 'testCluster-123' is a valid name but '123testCluster' is not. ", clusterName)
}
return nil
}
func ValidateClusterNameLength(clusterName string) error {
// docker container hostname can have a maximum length of 64 characters. we append "-eks-a-cluster"
// to get the KinD cluster's name and on top of this, KinD also adds a "-control-plane suffix" to
// the cluster name to arrive at the name for the control plane node (container), which makes the
// control plane node name 64 characters in length.
if len(clusterName) > 35 {
return fmt.Errorf("number of characters in %v should be less than 36", clusterName)
}
return nil
}
func validateClusterConfigName(clusterConfig *Cluster) error {
err := ValidateClusterName(clusterConfig.ObjectMeta.Name)
if err != nil {
return fmt.Errorf("failed to validate cluster config name: %v", err)
}
err = ValidateClusterNameLength(clusterConfig.ObjectMeta.Name)
if err != nil {
return fmt.Errorf("failed to validate cluster config name: %v", err)
}
return nil
}
func validateExternalEtcdSupport(cluster *Cluster) error {
if cluster.Spec.DatacenterRef.Kind == TinkerbellDatacenterKind {
if cluster.Spec.ExternalEtcdConfiguration != nil {
return errors.New("tinkerbell external etcd configuration is unsupported")
}
}
return nil
}
func validateMachineGroupRefs(cluster *Cluster) error {
if cluster.Spec.DatacenterRef.Kind != DockerDatacenterKind {
if cluster.Spec.ControlPlaneConfiguration.MachineGroupRef == nil {
return errors.New("must specify machineGroupRef control plane machines")
}
for _, workerNodeGroupConfiguration := range cluster.Spec.WorkerNodeGroupConfigurations {
if workerNodeGroupConfiguration.MachineGroupRef == nil {
return errors.New("must specify machineGroupRef for worker nodes")
}
}
if cluster.Spec.ExternalEtcdConfiguration != nil && cluster.Spec.ExternalEtcdConfiguration.MachineGroupRef == nil {
return errors.New("must specify machineGroupRef for etcd machines")
}
}
return nil
}
func validateControlPlaneReplicas(clusterConfig *Cluster) error {
if clusterConfig.Spec.ControlPlaneConfiguration.Count <= 0 {
return errors.New("control plane node count must be positive")
}
if clusterConfig.Spec.ExternalEtcdConfiguration != nil {
// For unstacked/external etcd, controlplane replicas can be any number including even numbers.
return nil
}
if clusterConfig.Spec.ControlPlaneConfiguration.Count%2 == 0 {
return errors.New("control plane node count cannot be an even number when using stacked etcd topology")
}
if clusterConfig.Spec.ControlPlaneConfiguration.Count != 3 && clusterConfig.Spec.ControlPlaneConfiguration.Count != 5 {
if clusterConfig.Spec.DatacenterRef.Kind != DockerDatacenterKind {
logger.Info("Warning: The recommended number of control plane nodes is 3 or 5")
}
}
return nil
}
func validateControlPlaneLabels(clusterConfig *Cluster) error {
if err := validateNodeLabels(clusterConfig.Spec.ControlPlaneConfiguration.Labels, field.NewPath("spec", "controlPlaneConfiguration", "labels")); err != nil {
return fmt.Errorf("labels for control plane not valid: %v", err)
}
return nil
}
func validateControlPlaneEndpoint(clusterConfig *Cluster) error {
if (clusterConfig.Spec.ControlPlaneConfiguration.Endpoint == nil || len(clusterConfig.Spec.ControlPlaneConfiguration.Endpoint.Host) <= 0) && clusterConfig.Spec.DatacenterRef.Kind != DockerDatacenterKind {
return errors.New("cluster controlPlaneConfiguration.Endpoint.Host is not set or is empty")
}
return nil
}
var domainNameRegex = regexp.MustCompile(`(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)+[a-z0-9][a-z0-9-]{0,61}[a-z0-9]`)
func validateControlPlaneCertSANs(cfg *Cluster) error {
var invalid []string
for _, san := range cfg.Spec.ControlPlaneConfiguration.CertSANs {
isDomain := domainNameRegex.MatchString(san)
isIP := net.ParseIP(san)
if !isDomain && isIP == nil {
invalid = append(invalid, san)
}
}
if len(invalid) > 0 {
return fmt.Errorf("invalid ControlPlaneConfiguration.CertSANs; must be an IP or domain name: [%v]", strings.Join(invalid, ", "))
}
return nil
}
func validateWorkerNodeGroups(clusterConfig *Cluster) error {
workerNodeGroupConfigs := clusterConfig.Spec.WorkerNodeGroupConfigurations
if len(workerNodeGroupConfigs) <= 0 {
if clusterConfig.Spec.DatacenterRef.Kind == TinkerbellDatacenterKind {
logger.Info("Warning: No configurations provided for worker node groups, pods will be scheduled on control-plane nodes")
} else {
return fmt.Errorf("WorkerNodeGroupConfigs cannot be empty for %s", clusterConfig.Spec.DatacenterRef.Kind)
}
}
workerNodeGroupNames := make(map[string]bool, len(workerNodeGroupConfigs))
noExecuteNoScheduleTaintedNodeGroups := make(map[string]struct{})
for i, workerNodeGroupConfig := range workerNodeGroupConfigs {
if workerNodeGroupConfig.Name == "" {
return errors.New("must specify name for worker nodes")
}
if workerNodeGroupConfig.Count == nil {
// This block should never fire. If it does, it means we have a bug in how we set our defaults.
// When Count == nil it should be set to 1 by SetDefaults method prior to reaching validation.
return errors.New("worker node count must be >= 0")
}
if err := validateAutoscalingConfig(&workerNodeGroupConfig); err != nil {
return fmt.Errorf("validating autoscaling configuration: %v", err)
}
if err := validateMDUpgradeRolloutStrategy(&workerNodeGroupConfig, clusterConfig.Spec.DatacenterRef.Kind); err != nil {
return fmt.Errorf("validating upgrade rollout strategy configuration: %v", err)
}
if workerNodeGroupNames[workerNodeGroupConfig.Name] {
return errors.New("worker node group names must be unique")
}
if len(workerNodeGroupConfig.Taints) != 0 {
for _, taint := range workerNodeGroupConfig.Taints {
if taint.Effect == "NoExecute" || taint.Effect == "NoSchedule" {
noExecuteNoScheduleTaintedNodeGroups[workerNodeGroupConfig.Name] = struct{}{}
}
}
}
workerNodeGroupField := fmt.Sprintf("workerNodeGroupConfigurations[%d]", i)
if err := validateNodeLabels(workerNodeGroupConfig.Labels, field.NewPath("spec", workerNodeGroupField, "labels")); err != nil {
return fmt.Errorf("labels for worker node group %v not valid: %v", workerNodeGroupConfig.Name, err)
}
workerNodeGroupNames[workerNodeGroupConfig.Name] = true
}
if len(workerNodeGroupConfigs) > 0 && len(noExecuteNoScheduleTaintedNodeGroups) == len(workerNodeGroupConfigs) {
if clusterConfig.IsSelfManaged() {
return errors.New("at least one WorkerNodeGroupConfiguration must not have NoExecute and/or NoSchedule taints")
}
}
if len(workerNodeGroupConfigs) == 0 && len(clusterConfig.Spec.ControlPlaneConfiguration.Taints) != 0 {
return errors.New("cannot taint control plane when there is no worker node")
}
if len(workerNodeGroupConfigs) == 0 && clusterConfig.Spec.KubernetesVersion <= Kube121 {
return errors.New("Empty workerNodeGroupConfigs is not supported for kube version <= 1.21")
}
return nil
}
func validateAutoscalingConfig(w *WorkerNodeGroupConfiguration) error {
if w == nil {
return nil
}
if w.AutoScalingConfiguration == nil && *w.Count < 0 {
return errors.New("worker node count must be zero or greater if autoscaling is not enabled")
}
if w.AutoScalingConfiguration == nil {
return nil
}
if w.AutoScalingConfiguration.MinCount < 0 {
return errors.New("min count must be non negative")
}
if w.AutoScalingConfiguration.MinCount > w.AutoScalingConfiguration.MaxCount {
return errors.New("min count must be no greater than max count")
}
if w.AutoScalingConfiguration.MinCount > *w.Count {
return errors.New("min count must be less than or equal to count")
}
if w.AutoScalingConfiguration.MaxCount < *w.Count {
return errors.New("max count must be greater than or equal to count")
}
return nil
}
func validateNodeLabels(labels map[string]string, fldPath *field.Path) error {
errList := validation.ValidateLabels(labels, fldPath)
if len(errList) != 0 {
return fmt.Errorf("found following errors with labels: %v", errList.ToAggregate().Error())
}
return nil
}
func validateEtcdReplicas(clusterConfig *Cluster) error {
if clusterConfig.Spec.ExternalEtcdConfiguration == nil {
return nil
}
if clusterConfig.Spec.ExternalEtcdConfiguration.Count == 0 {
return errors.New("no value set for etcd replicas")
}
if clusterConfig.Spec.ExternalEtcdConfiguration.Count < 0 {
return errors.New("etcd replicas cannot be a negative number")
}
if clusterConfig.Spec.ExternalEtcdConfiguration.Count%2 == 0 {
return errors.New("external etcd count cannot be an even number")
}
if clusterConfig.Spec.ExternalEtcdConfiguration.Count != 3 && clusterConfig.Spec.ExternalEtcdConfiguration.Count != 5 {
if clusterConfig.Spec.DatacenterRef.Kind != DockerDatacenterKind {
// only log warning about recommended etcd cluster size for providers other than docker
logger.Info("Warning: The recommended size of an external etcd cluster is 3 or 5")
}
}
return nil
}
func validateNetworking(clusterConfig *Cluster) error {
clusterNetwork := clusterConfig.Spec.ClusterNetwork
if clusterNetwork.CNI == Kindnetd || clusterNetwork.CNIConfig != nil && clusterNetwork.CNIConfig.Kindnetd != nil {
if clusterConfig.Spec.DatacenterRef.Kind != DockerDatacenterKind {
return errors.New("kindnetd is only supported on Docker provider for development and testing. For all other providers please use Cilium CNI")
}
}
if len(clusterNetwork.Pods.CidrBlocks) <= 0 {
return errors.New("pods CIDR block not specified or empty")
}
if len(clusterNetwork.Services.CidrBlocks) <= 0 {
return errors.New("services CIDR block not specified or empty")
}
if len(clusterNetwork.Pods.CidrBlocks) > 1 {
return fmt.Errorf("multiple CIDR blocks for Pods are not yet supported")
}
if len(clusterNetwork.Services.CidrBlocks) > 1 {
return fmt.Errorf("multiple CIDR blocks for Services are not yet supported")
}
_, podCIDRIPNet, err := net.ParseCIDR(clusterNetwork.Pods.CidrBlocks[0])
if err != nil {
return fmt.Errorf("invalid CIDR block format for Pods: %s. Please specify a valid CIDR block for pod subnet", clusterNetwork.Pods)
}
_, serviceCIDRIPNet, err := net.ParseCIDR(clusterNetwork.Services.CidrBlocks[0])
if err != nil {
return fmt.Errorf("invalid CIDR block for Services: %s. Please specify a valid CIDR block for service subnet", clusterNetwork.Services)
}
if clusterConfig.Spec.DatacenterRef.Kind == SnowDatacenterKind {
controlPlaneEndpoint := net.ParseIP(clusterConfig.Spec.ControlPlaneConfiguration.Endpoint.Host)
if controlPlaneEndpoint == nil {
return fmt.Errorf("control plane endpoint %s is invalid", clusterConfig.Spec.ControlPlaneConfiguration.Endpoint.Host)
}
if podCIDRIPNet.Contains(controlPlaneEndpoint) {
return fmt.Errorf("control plane endpoint %s conflicts with pods CIDR block %s", clusterConfig.Spec.ControlPlaneConfiguration.Endpoint.Host, clusterNetwork.Pods.CidrBlocks[0])
}
if serviceCIDRIPNet.Contains(controlPlaneEndpoint) {
return fmt.Errorf("control plane endpoint %s conflicts with services CIDR block %s", clusterConfig.Spec.ControlPlaneConfiguration.Endpoint.Host, clusterNetwork.Services.CidrBlocks[0])
}
}
podMaskSize, _ := podCIDRIPNet.Mask.Size()
nodeCidrMaskSize := constants.DefaultNodeCidrMaskSize
if clusterNetwork.Nodes != nil && clusterNetwork.Nodes.CIDRMaskSize != nil {
nodeCidrMaskSize = *clusterNetwork.Nodes.CIDRMaskSize
}
// the pod subnet mask needs to allow one or multiple node-masks
// i.e. if it has a /24 the node mask must be between 24 and 32 for ipv4
// the below validations are run by kubeadm and we are bubbling those up here for better customer experience
if podMaskSize >= nodeCidrMaskSize {
return fmt.Errorf("the size of pod subnet with mask %d is smaller than or equal to the size of node subnet with mask %d", podMaskSize, nodeCidrMaskSize)
} else if (nodeCidrMaskSize - podMaskSize) > podSubnetNodeMaskMaxDiff {
// PodSubnetNodeMaskMaxDiff is limited to 16 due to an issue with uncompressed IP bitmap in core
// The node subnet mask size must be no more than the pod subnet mask size + 16
return fmt.Errorf("pod subnet mask (%d) and node-mask (%d) difference is greater than %d", podMaskSize, nodeCidrMaskSize, podSubnetNodeMaskMaxDiff)
}
return validateCNIPlugin(clusterNetwork)
}
func validateCNIPlugin(network ClusterNetwork) error {
if network.CNI != "" {
if network.CNIConfig != nil {
return fmt.Errorf("invalid format for cni plugin: both old and new formats used, use only the CNIConfig field")
}
logger.Info("Warning: CNI field is deprecated. Provide CNI information through CNIConfig")
if _, ok := validCNIs[network.CNI]; !ok {
return fmt.Errorf("cni %s not supported", network.CNI)
}
return nil
}
return validateCNIConfig(network.CNIConfig)
}
func validateCNIConfig(cniConfig *CNIConfig) error {
if cniConfig == nil {
return fmt.Errorf("cni not specified")
}
var cniPluginSpecified int
var allErrs []error
if cniConfig.Cilium != nil {
cniPluginSpecified++
if err := validateCiliumConfig(cniConfig.Cilium); err != nil {
allErrs = append(allErrs, err)
}
}
if cniConfig.Kindnetd != nil {
cniPluginSpecified++
}
if cniPluginSpecified == 0 {
allErrs = append(allErrs, fmt.Errorf("no cni plugin specified"))
} else if cniPluginSpecified > 1 {
allErrs = append(allErrs, fmt.Errorf("cannot specify more than one cni plugins"))
}
if len(allErrs) > 0 {
aggregate := utilerrors.NewAggregate(allErrs)
return fmt.Errorf("validating cniConfig: %v", aggregate)
}
return nil
}
func validateCiliumConfig(cilium *CiliumConfig) error {
if cilium == nil {
return nil
}
if !cilium.IsManaged() {
if cilium.PolicyEnforcementMode != "" {
return errors.New("when using skipUpgrades for cilium all other fields must be empty")
}
}
if cilium.PolicyEnforcementMode == "" {
return nil
}
if !validCiliumPolicyEnforcementModes[cilium.PolicyEnforcementMode] {
return fmt.Errorf("cilium policyEnforcementMode \"%s\" not supported", cilium.PolicyEnforcementMode)
}
return nil
}
func validateProxyConfig(clusterConfig *Cluster) error {
if clusterConfig.Spec.ProxyConfiguration == nil {
return nil
}
if clusterConfig.Spec.ProxyConfiguration.HttpProxy == "" {
return errors.New("no value set for httpProxy")
}
if clusterConfig.Spec.ProxyConfiguration.HttpsProxy == "" {
return errors.New("no value set for httpsProxy")
}
if err := validateProxyData(clusterConfig.Spec.ProxyConfiguration.HttpProxy); err != nil {
return err
}
if err := validateProxyData(clusterConfig.Spec.ProxyConfiguration.HttpsProxy); err != nil {
return err
}
return nil
}
func validateProxyData(proxy string) error {
var proxyHost string
if strings.HasPrefix(proxy, "http") {
u, err := url.ParseRequestURI(proxy)
if err != nil {
return fmt.Errorf("proxy %s is invalid, please provide a valid URI", proxy)
}
proxyHost = u.Host
} else {
proxyHost = proxy
}
host, port, err := net.SplitHostPort(proxyHost)
if err != nil {
return fmt.Errorf("proxy endpoint %s is invalid (%s), please provide a valid proxy address", proxy, err)
}
_, err = net.DefaultResolver.LookupIPAddr(context.Background(), host)
if err != nil && net.ParseIP(host) == nil {
return fmt.Errorf("proxy endpoint %s is invalid, please provide a valid proxy domain name or ip: %v", host, err)
}
if p, err := strconv.Atoi(port); err != nil || p < 1 || p > 65535 {
return fmt.Errorf("proxy port %s is invalid, please provide a valid proxy port", port)
}
return nil
}
func validateMirrorConfig(clusterConfig *Cluster) error {
if clusterConfig.Spec.RegistryMirrorConfiguration == nil {
return nil
}
if clusterConfig.Spec.RegistryMirrorConfiguration.Endpoint == "" {
return errors.New("no value set for RegistryMirrorConfiguration.Endpoint")
}
if !networkutils.IsPortValid(clusterConfig.Spec.RegistryMirrorConfiguration.Port) {
return fmt.Errorf("registry mirror port %s is invalid, please provide a valid port", clusterConfig.Spec.RegistryMirrorConfiguration.Port)
}
mirrorCount := 0
ociNamespaces := clusterConfig.Spec.RegistryMirrorConfiguration.OCINamespaces
for _, ociNamespace := range ociNamespaces {
if ociNamespace.Registry == "" {
return errors.New("registry can't be set to empty in OCINamespaces")
}
if re.MatchString(ociNamespace.Registry) {
mirrorCount++
// More than one mirror for curated package would introduce ambiguity in the package controller
if mirrorCount > 1 {
return errors.New("only one registry mirror for curated packages is suppported")
}
}
}
return nil
}
func validateIdentityProviderRefs(clusterConfig *Cluster) error {
refs := clusterConfig.Spec.IdentityProviderRefs
if len(refs) == 0 {
return nil
}
for _, ref := range refs {
if ref.Kind != OIDCConfigKind && ref.Kind != AWSIamConfigKind {
return fmt.Errorf("kind: %s for identityProviderRef is not supported", ref.Kind)
}
if ref.Name == "" {
return errors.New("specify a valid name for identityProviderRef")
}
}
return nil
}
func validateGitOps(clusterConfig *Cluster) error {
gitOpsRef := clusterConfig.Spec.GitOpsRef
if gitOpsRef == nil {
return nil
}
gitOpsRefKind := gitOpsRef.Kind
if gitOpsRefKind != GitOpsConfigKind && gitOpsRefKind != FluxConfigKind {
return errors.New("only GitOpsConfig or FluxConfig Kind are supported at this time")
}
if gitOpsRef.Name == "" {
return errors.New("GitOpsRef name can't be empty; specify a valid GitOpsConfig name")
}
return nil
}
func validatePodIAMConfig(clusterConfig *Cluster) error {
if clusterConfig.Spec.PodIAMConfig == nil {
return nil
}
if clusterConfig.Spec.PodIAMConfig.ServiceAccountIssuer == "" {
return errors.New("ServiceAccount Issuer can't be empty while configuring IAM roles for pods")
}
return nil
}
func validateCPUpgradeRolloutStrategy(clusterConfig *Cluster) error {
cpUpgradeRolloutStrategy := clusterConfig.Spec.ControlPlaneConfiguration.UpgradeRolloutStrategy
if cpUpgradeRolloutStrategy == nil {
return nil
}
switch cpUpgradeRolloutStrategy.Type {
case RollingUpdateStrategyType:
if cpUpgradeRolloutStrategy.RollingUpdate != nil {
if cpUpgradeRolloutStrategy.RollingUpdate.MaxSurge < 0 {
return fmt.Errorf("ControlPlaneConfiguration: maxSurge for control plane cannot be a negative value")
}
if cpUpgradeRolloutStrategy.RollingUpdate.MaxSurge > 1 {
return fmt.Errorf("ControlPlaneConfiguration: maxSurge for control plane must be 0 or 1")
}
}
case InPlaceStrategyType:
if cpUpgradeRolloutStrategy.RollingUpdate != nil {
return fmt.Errorf("ControlPlaneConfiguration: RollingUpdate field must be empty for 'InPlace' upgrade rollout strategy type")
}
if clusterConfig.Spec.DatacenterRef.Kind == VSphereDatacenterKind {
if !features.IsActive(features.VSphereInPlaceUpgradeEnabled()) {
return errors.New("in place upgrades are not supported on vSphere")
}
if clusterConfig.Spec.ExternalEtcdConfiguration != nil {
return errors.New("stacked etcd must be configured when performing in place upgrades")
}
return nil
}
if clusterConfig.Spec.DatacenterRef.Kind != TinkerbellDatacenterKind {
return fmt.Errorf("ControlPlaneConfiguration: 'InPlace' upgrade rollout strategy type is only supported on Bare Metal")
}
default:
return fmt.Errorf("ControlPlaneConfiguration: only 'RollingUpdate' and 'InPlace' are supported for upgrade rollout strategy type")
}
return nil
}
func validateMDUpgradeRolloutStrategy(w *WorkerNodeGroupConfiguration, datacenterRefKind string) error {
if w.UpgradeRolloutStrategy == nil {
return nil
}
switch w.UpgradeRolloutStrategy.Type {
case RollingUpdateStrategyType:
if w.UpgradeRolloutStrategy.RollingUpdate == nil {
return fmt.Errorf("WorkerNodeGroupConfiguration: upgradeRolloutStrategy.rollingUpdate field is required for upgradeRolloutStrategy.type RollingUpdate")
}
if w.UpgradeRolloutStrategy.RollingUpdate.MaxSurge < 0 || w.UpgradeRolloutStrategy.RollingUpdate.MaxUnavailable < 0 {
return fmt.Errorf("WorkerNodeGroupConfiguration: maxSurge and maxUnavailable values cannot be negative")
}
if w.UpgradeRolloutStrategy.RollingUpdate.MaxSurge == 0 && w.UpgradeRolloutStrategy.RollingUpdate.MaxUnavailable == 0 {
return fmt.Errorf("WorkerNodeGroupConfiguration: maxSurge and maxUnavailable not specified or are 0. maxSurge and maxUnavailable cannot both be 0")
}
case InPlaceStrategyType:
if w.UpgradeRolloutStrategy.RollingUpdate != nil {
return fmt.Errorf("WorkerNodeGroupConfiguration: RollingUpdate field must be empty for 'InPlace' upgrade rollout strategy type")
}
if datacenterRefKind == VSphereDatacenterKind {
if features.IsActive(features.VSphereInPlaceUpgradeEnabled()) {
return nil
}
return errors.New("in place upgrades are not supported on vSphere")
}
if datacenterRefKind != TinkerbellDatacenterKind {
return fmt.Errorf("WorkerNodeGroupConfiguration: 'InPlace' upgrade rollout strategy type is only supported on Bare Metal")
}
default:
return fmt.Errorf("WorkerNodeGroupConfiguration: only 'RollingUpdate' and 'InPlace' are supported for upgrade rollout strategy type")
}
return nil
}
func validatePackageControllerConfiguration(clusterConfig *Cluster) error {
if clusterConfig.IsManaged() {
if clusterConfig.Spec.Packages != nil {
if clusterConfig.Spec.Packages.Controller != nil {
return fmt.Errorf("packages: controller should not be specified for a workload cluster")
}
if clusterConfig.Spec.Packages.CronJob != nil {
return fmt.Errorf("packages: cronjob should not be specified for a workload cluster")
}
}
}
return nil
}
func validateEksaVersion(clusterConfig *Cluster) error {
if clusterConfig.Spec.BundlesRef != nil && clusterConfig.Spec.EksaVersion != nil {
return fmt.Errorf("cannot pass both bundlesRef and eksaVersion. New clusters should use eksaVersion instead of bundlesRef")
}
if clusterConfig.Spec.EksaVersion != nil {
_, err := semver.New(string(*clusterConfig.Spec.EksaVersion))
if err != nil {
return fmt.Errorf("eksaVersion is not a valid semver")
}
}
return nil
}