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https://github.com/optim-enterprises-bv/kubernetes.git
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8181fd29b2
Allow to specify a node-name instead of relaying in `os.Hostname()` This is useful where kubelet use the name given by the cloud-provider to register the node. Partially fix: kubernetes/kubeadm#64
89 lines
2.9 KiB
Go
89 lines
2.9 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cmd
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import (
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"fmt"
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"io/ioutil"
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"net"
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"k8s.io/apimachinery/pkg/runtime"
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netutil "k8s.io/apimachinery/pkg/util/net"
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kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
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kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"
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kubeadmutil "k8s.io/kubernetes/cmd/kubeadm/app/util"
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tokenutil "k8s.io/kubernetes/cmd/kubeadm/app/util/token"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/util/node"
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"k8s.io/kubernetes/pkg/util/version"
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)
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func SetInitDynamicDefaults(cfg *kubeadmapi.MasterConfiguration) error {
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// Choose the right address for the API Server to advertise. If the advertise address is localhost or 0.0.0.0, the default interface's IP address is used
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// This is the same logic as the API Server uses
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ip, err := netutil.ChooseBindAddress(net.ParseIP(cfg.API.AdvertiseAddress))
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if err != nil {
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return err
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}
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cfg.API.AdvertiseAddress = ip.String()
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// Validate version argument
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ver, err := kubeadmutil.KubernetesReleaseVersion(cfg.KubernetesVersion)
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if err != nil {
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return err
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}
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cfg.KubernetesVersion = ver
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// Parse the given kubernetes version and make sure it's higher than the lowest supported
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k8sVersion, err := version.ParseSemantic(cfg.KubernetesVersion)
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if err != nil {
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return fmt.Errorf("couldn't parse kubernetes version %q: %v", cfg.KubernetesVersion, err)
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}
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if k8sVersion.LessThan(kubeadmconstants.MinimumControlPlaneVersion) {
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return fmt.Errorf("this version of kubeadm only supports deploying clusters with the control plane version >= %s. Current version: %s", kubeadmconstants.MinimumControlPlaneVersion.String(), cfg.KubernetesVersion)
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}
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if cfg.Token == "" {
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var err error
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cfg.Token, err = tokenutil.GenerateToken()
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if err != nil {
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return fmt.Errorf("couldn't generate random token: %v", err)
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}
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}
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cfg.NodeName = node.GetHostname(cfg.NodeName)
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return nil
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}
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// TryLoadMasterConfiguration tries to loads a Master configuration from the given file (if defined)
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func TryLoadMasterConfiguration(cfgPath string, cfg *kubeadmapi.MasterConfiguration) error {
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if cfgPath != "" {
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b, err := ioutil.ReadFile(cfgPath)
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if err != nil {
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return fmt.Errorf("unable to read config from %q [%v]", cfgPath, err)
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}
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if err := runtime.DecodeInto(api.Codecs.UniversalDecoder(), b, cfg); err != nil {
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return fmt.Errorf("unable to decode config from %q [%v]", cfgPath, err)
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}
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}
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return nil
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}
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