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kubeadm_config.go
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kubeadm_config.go
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// Copyright © 2021 Alibaba Group Holding Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package types
import (
"fmt"
"github.com/imdario/mergo"
k8sruntime "k8s.io/apimachinery/pkg/runtime"
versionutil "k8s.io/apimachinery/pkg/util/version"
kubeproxyconfigv1alpha1 "k8s.io/kube-proxy/config/v1alpha1"
kubeletconfigv1beta1 "k8s.io/kubelet/config/v1beta1"
"k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm" // internal version
"k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta2"
"k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta3"
"github.com/labring/sealos/pkg/runtime/decode"
"github.com/labring/sealos/pkg/utils/file"
"github.com/labring/sealos/pkg/utils/logger"
"github.com/labring/sealos/pkg/utils/maps"
)
//nolint:all
type KubeadmConfig struct {
kubeadm.InitConfiguration
kubeadm.ClusterConfiguration
kubeadm.JoinConfiguration
kubeproxyconfigv1alpha1.KubeProxyConfiguration
kubeletconfigv1beta1.KubeletConfiguration
}
type ConvertedKubeadmConfig struct {
InitConfiguration, ClusterConfiguration, JoinConfiguration, KubeProxyConfiguration, KubeletConfiguration interface{}
}
func NewKubeadmConfig() *KubeadmConfig {
return &KubeadmConfig{}
}
func (k *KubeadmConfig) GetComponents() []any {
converted, err := k.ToConvertedKubeadmConfig()
if err != nil {
logger.Error("failed to convert kubeadmConfig: %v", err)
return nil
}
return []any{
converted.InitConfiguration,
converted.ClusterConfiguration,
converted.JoinConfiguration,
converted.KubeProxyConfiguration,
converted.KubeletConfiguration,
}
}
var defaultMergeOpts = []func(*mergo.Config){
mergo.WithOverride,
mergo.WithAppendSlice,
}
// LoadFromClusterfile :Load KubeadmConfig from Clusterfile.
// If it has `KubeadmConfig` in Clusterfile, load every field to each configuration.
// If Kubeadm raw Config in Clusterfile, just load it.
func (k *KubeadmConfig) LoadFromClusterfile(kubeadmConfig *KubeadmConfig) error {
if kubeadmConfig == nil {
return nil
}
return k.mutuallyExclusiveMerge(kubeadmConfig)
}
// mutuallyExclusiveMerge merge from kubeadmConfig, the mutually exclusive field will be droped.
func (k *KubeadmConfig) mutuallyExclusiveMerge(kubeadmConfig *KubeadmConfig) error {
for _, fn := range []func(*KubeadmConfig){
k.etcdLocalOrExternal,
} {
fn(kubeadmConfig)
}
return mergo.Merge(k, kubeadmConfig, defaultMergeOpts...)
}
func (k *KubeadmConfig) etcdLocalOrExternal(kubeadmConfig *KubeadmConfig) {
if kubeadmConfig.Etcd.External != nil {
k.Etcd.Local = nil
} else if kubeadmConfig.Etcd.Local != nil {
k.Etcd.External = nil
}
}
func (k *KubeadmConfig) FetchDefaultKubeadmConfig() string {
logger.Debug("using default kubeadm config")
return defaultKubeadmConfig
}
// Merge Using github.com/imdario/mergo to merge KubeadmConfig to the CloudImage default kubeadm Config, overwrite some field.
// if defaultKubeadmConfig file not exist, use default raw kubeadm Config to merge k.KubeConfigSpec empty value
func (k *KubeadmConfig) Merge(kubeadmYamlPath string) error {
if kubeadmYamlPath == "" {
defaultKubeadmConfig, err := LoadKubeadmConfigs(k.FetchDefaultKubeadmConfig(), false, decode.CRDFromString)
if err != nil {
return err
}
return mergo.Merge(k, defaultKubeadmConfig, defaultMergeOpts...)
} else if !file.IsExist(kubeadmYamlPath) {
logger.Debug("skip merging kubeadm configs from cause file %s not exists", kubeadmYamlPath)
return nil
}
logger.Debug("trying to merge kubeadm configs from file %s", kubeadmYamlPath)
kc, err := LoadKubeadmConfigs(kubeadmYamlPath, false, decode.CRDFromFile)
if err != nil {
return fmt.Errorf("failed to load kubeadm config from %s: %v", kubeadmYamlPath, err)
}
err = mergo.Merge(k, kc, defaultMergeOpts...)
if err != nil {
return fmt.Errorf("failed to merge kubeadm config from %s: %v", kubeadmYamlPath, err)
}
return nil
}
func (k *KubeadmConfig) ToConvertedKubeadmConfig() (*ConvertedKubeadmConfig, error) {
conversion := &ConvertedKubeadmConfig{}
var err error
switch k.InitConfiguration.APIVersion {
case KubeadmV1beta2:
var v1beta2InitConfiguration v1beta2.InitConfiguration
var v1beta2ClusterConfiguration v1beta2.ClusterConfiguration
var v1beta2JoinConfiguration v1beta2.JoinConfiguration
if err = v1beta2.Convert_kubeadm_InitConfiguration_To_v1beta2_InitConfiguration(&k.InitConfiguration, &v1beta2InitConfiguration, nil); err != nil {
return nil, err
}
if err = v1beta2.Convert_kubeadm_ClusterConfiguration_To_v1beta2_ClusterConfiguration(&k.ClusterConfiguration, &v1beta2ClusterConfiguration, nil); err != nil {
return nil, err
}
if err = v1beta2.Convert_kubeadm_JoinConfiguration_To_v1beta2_JoinConfiguration(&k.JoinConfiguration, &v1beta2JoinConfiguration, nil); err != nil {
return nil, err
}
v1beta2InitConfiguration.APIVersion = v1beta2.SchemeGroupVersion.String()
v1beta2ClusterConfiguration.APIVersion = v1beta2.SchemeGroupVersion.String()
v1beta2JoinConfiguration.APIVersion = v1beta2.SchemeGroupVersion.String()
v1beta2InitConfiguration.Kind = "InitConfiguration"
v1beta2ClusterConfiguration.Kind = "ClusterConfiguration"
v1beta2JoinConfiguration.Kind = "JoinConfiguration"
conversion.InitConfiguration = v1beta2InitConfiguration
conversion.ClusterConfiguration = v1beta2ClusterConfiguration
conversion.JoinConfiguration = v1beta2JoinConfiguration
case KubeadmV1beta3, "": // defaults to v1beta3
var v1beta3InitConfiguration v1beta3.InitConfiguration
var v1beta3ClusterConfiguration v1beta3.ClusterConfiguration
var v1beta3JoinConfiguration v1beta3.JoinConfiguration
if err = v1beta3.Convert_kubeadm_InitConfiguration_To_v1beta3_InitConfiguration(&k.InitConfiguration, &v1beta3InitConfiguration, nil); err != nil {
return nil, err
}
if err = v1beta3.Convert_kubeadm_ClusterConfiguration_To_v1beta3_ClusterConfiguration(&k.ClusterConfiguration, &v1beta3ClusterConfiguration, nil); err != nil {
return nil, err
}
if err = v1beta3.Convert_kubeadm_JoinConfiguration_To_v1beta3_JoinConfiguration(&k.JoinConfiguration, &v1beta3JoinConfiguration, nil); err != nil {
return nil, err
}
v1beta3InitConfiguration.APIVersion = v1beta3.SchemeGroupVersion.String()
v1beta3ClusterConfiguration.APIVersion = v1beta3.SchemeGroupVersion.String()
v1beta3JoinConfiguration.APIVersion = v1beta3.SchemeGroupVersion.String()
v1beta3InitConfiguration.Kind = "InitConfiguration"
v1beta3ClusterConfiguration.Kind = "ClusterConfiguration"
v1beta3JoinConfiguration.Kind = "JoinConfiguration"
conversion.InitConfiguration = v1beta3InitConfiguration
conversion.ClusterConfiguration = v1beta3ClusterConfiguration
conversion.JoinConfiguration = v1beta3JoinConfiguration
default: // unknown version
conversion.JoinConfiguration = k.JoinConfiguration
conversion.InitConfiguration = k.InitConfiguration
conversion.ClusterConfiguration = k.ClusterConfiguration
}
{
v1beta1Kubelet := k.KubeletConfiguration.DeepCopy()
v1alpha1KubeProxy := k.KubeProxyConfiguration.DeepCopy()
v1beta1Kubelet.APIVersion = kubeletconfigv1beta1.SchemeGroupVersion.String()
v1alpha1KubeProxy.APIVersion = kubeproxyconfigv1alpha1.SchemeGroupVersion.String()
v1beta1Kubelet.Kind = "KubeletConfiguration"
v1alpha1KubeProxy.Kind = "KubeProxyConfiguration"
conversion.KubeProxyConfiguration = v1alpha1KubeProxy
conversion.KubeletConfiguration = v1beta1Kubelet
}
return conversion, nil
}
func (k *KubeadmConfig) SetDefaults() {
for _, obj := range []k8sruntime.Object{
&k.ClusterConfiguration,
&k.InitConfiguration,
&k.JoinConfiguration,
&k.KubeProxyConfiguration,
&k.KubeletConfiguration,
} {
decode.Default(obj)
}
}
func (k *KubeadmConfig) SetKubeVersion(version string) {
k.ClusterConfiguration.KubernetesVersion = version
}
func (k *KubeadmConfig) SetAPIVersion(apiVersion string) {
k.InitConfiguration.APIVersion = apiVersion
k.ClusterConfiguration.APIVersion = apiVersion
k.JoinConfiguration.APIVersion = apiVersion
}
func (k *KubeadmConfig) FinalizeFeatureGatesConfiguration() {
if k.ClusterConfiguration.KubernetesVersion == "" {
panic("kubernetesVersion must not been null")
}
extraArgs := []map[string]string{k.ClusterConfiguration.ControllerManager.ExtraArgs, k.ClusterConfiguration.APIServer.ExtraArgs, k.ClusterConfiguration.Scheduler.ExtraArgs}
if versionutil.MustParseSemantic(k.ClusterConfiguration.KubernetesVersion).LessThan(versionutil.MustParseSemantic("1.19.0")) {
delete(extraArgs[0], "cluster-signing-duration")
extraArgs[0]["experimental-cluster-signing-duration"] = "87600h"
}
for i, args := range extraArgs {
if args["feature-gates"] != "" {
args["feature-gates"] = updateFeatureGatesConfiguration(args["feature-gates"], k.ClusterConfiguration.KubernetesVersion).(string)
}
extraArgs[i] = args
}
k.KubeletConfiguration.FeatureGates = updateFeatureGatesConfiguration(
k.KubeletConfiguration.FeatureGates, k.ClusterConfiguration.KubernetesVersion).(map[string]bool)
}
var featureGatesUpdate = map[string][]string{
"CSIStorageCapacity": {"LessThan", "v1.21.0"},
"TTLAfterFinished": {"AtLeast", "v1.24.0"},
"EphemeralContainers": {"AtLeast", "v1.26.0"},
}
func deleteFeatureMap[T string | bool](currentFeature map[string]T, versionStr string) map[string]T {
for k, v := range featureGatesUpdate {
if v[0] == "LessThan" &&
versionutil.MustParseSemantic(versionStr).LessThan(versionutil.MustParseSemantic(v[1])) {
delete(currentFeature, k)
}
if v[0] == "AtLeast" &&
versionutil.MustParseSemantic(versionStr).AtLeast(versionutil.MustParseSemantic(v[1])) {
delete(currentFeature, k)
}
}
return currentFeature
}
func updateFeatureGatesConfiguration(featureGates any, version string) any {
switch x := featureGates.(type) {
case string:
currentFeature := maps.FromString(x, ",")
currentFeature = deleteFeatureMap(currentFeature, version)
return maps.ToString(currentFeature, ",")
case map[string]bool:
newFeature := x
newFeature = deleteFeatureMap(newFeature, version)
return newFeature
}
return nil
}
func LoadKubeadmConfigs(arg string, setDefaults bool, decodeFunc func(arg string, kind string) (interface{}, error)) (*KubeadmConfig, error) {
if setDefaults {
decodeFunc = func(arg string, kind string) (interface{}, error) {
ret, err := decodeFunc(arg, kind)
if err != nil {
return nil, err
}
if obj, ok := ret.(k8sruntime.Object); ok {
decode.Default(obj)
}
return ret, nil
}
}
kubeadmConfig := &KubeadmConfig{}
initConfig, err := decodeFunc(arg, decode.InitConfiguration)
if err != nil {
return nil, err
} else if initConfig != nil {
kubeadmConfig.InitConfiguration = *initConfig.(*kubeadm.InitConfiguration)
}
clusterConfig, err := decodeFunc(arg, decode.ClusterConfiguration)
if err != nil {
return nil, err
} else if clusterConfig != nil {
kubeadmConfig.ClusterConfiguration = *clusterConfig.(*kubeadm.ClusterConfiguration)
}
kubeProxyConfig, err := decodeFunc(arg, decode.KubeProxyConfiguration)
if err != nil {
return nil, err
} else if kubeProxyConfig != nil {
kubeadmConfig.KubeProxyConfiguration = *kubeProxyConfig.(*kubeproxyconfigv1alpha1.KubeProxyConfiguration)
}
kubeletConfig, err := decodeFunc(arg, decode.KubeletConfiguration)
if err != nil {
return nil, err
} else if kubeletConfig != nil {
kubeadmConfig.KubeletConfiguration = *kubeletConfig.(*kubeletconfigv1beta1.KubeletConfiguration)
}
joinConfig, err := decodeFunc(arg, decode.JoinConfiguration)
if err != nil {
return nil, err
} else if joinConfig != nil {
kubeadmConfig.JoinConfiguration = *joinConfig.(*kubeadm.JoinConfiguration)
}
return kubeadmConfig, nil
}