8. kubeadm-build

8.1. build kubeadm

修改 Kubeadm 使得 /etc/kubernetes/manifests/ 下的 *.yaml 文件带有 imagePullPolicy: IfNotPresent

env

192.168.31.114 jlch

gopath

cd ~/gopath/src/github.com/kubernetes/
git clone https://github.com/kubernetes/kubernetes.git
cd kubernetes

修改吧

jlch@mon1:~/gopath/src/github.com/kubernetes/kubernetes$ git status
Not currently on any branch.
Changes not staged for commit:
(use "git add <file>..." to update what will be committed)
(use "git checkout -- <file>..." to discard changes in working directory)

    modified:   cmd/kubeadm/app/phases/controlplane/manifests.go
    modified:   cmd/kubeadm/app/phases/etcd/local.go

no changes added to commit (use "git add" and/or "git commit -a")
jlch@mon1:~/gopath/src/github.com/kubernetes/kubernetes$ git diff cmd/kubeadm/app/phases/controlplane/manifests.go
diff --git a/cmd/kubeadm/app/phases/controlplane/manifests.go b/cmd/kubeadm/app/phases/controlplane/manifests.go
index 7d2784d..5b2833f 100644
--- a/cmd/kubeadm/app/phases/controlplane/manifests.go
+++ b/cmd/kubeadm/app/phases/controlplane/manifests.go
@@ -75,6 +75,7 @@ func GetStaticPodSpecs(cfg *kubeadmapi.MasterConfiguration, k8sVersion *version.
                kubeadmconstants.KubeAPIServer: staticpodutil.ComponentPod(v1.Container{
                        Name:          kubeadmconstants.KubeAPIServer,
                        Image:         images.GetCoreImage(kubeadmconstants.KubeAPIServer, cfg.GetControlPlaneImageRepository(), cfg.KubernetesVersion, cfg.UnifiedControlPlaneImage),
+                        ImagePullPolicy: v1.PullIfNotPresent,
                        Command:       getAPIServerCommand(cfg, k8sVersion),
                        VolumeMounts:  mounts.GetVolumeMounts(kubeadmconstants.KubeAPIServer),
                        LivenessProbe: staticpodutil.ComponentProbe(int(cfg.API.BindPort), "/healthz", v1.URISchemeHTTPS),
@@ -84,6 +85,7 @@ func GetStaticPodSpecs(cfg *kubeadmapi.MasterConfiguration, k8sVersion *version.
                kubeadmconstants.KubeControllerManager: staticpodutil.ComponentPod(v1.Container{
                        Name:          kubeadmconstants.KubeControllerManager,
                        Image:         images.GetCoreImage(kubeadmconstants.KubeControllerManager, cfg.GetControlPlaneImageRepository(), cfg.KubernetesVersion, cfg.UnifiedControlPlaneImage),
+                        ImagePullPolicy: v1.PullIfNotPresent,
                        Command:       getControllerManagerCommand(cfg, k8sVersion),
                        VolumeMounts:  mounts.GetVolumeMounts(kubeadmconstants.KubeControllerManager),
                        LivenessProbe: staticpodutil.ComponentProbe(10252, "/healthz", v1.URISchemeHTTP),
@@ -93,6 +95,7 @@ func GetStaticPodSpecs(cfg *kubeadmapi.MasterConfiguration, k8sVersion *version.
                kubeadmconstants.KubeScheduler: staticpodutil.ComponentPod(v1.Container{
                        Name:          kubeadmconstants.KubeScheduler,
                        Image:         images.GetCoreImage(kubeadmconstants.KubeScheduler, cfg.GetControlPlaneImageRepository(), cfg.KubernetesVersion, cfg.UnifiedControlPlaneImage),
+                        ImagePullPolicy: v1.PullIfNotPresent,
                        Command:       getSchedulerCommand(cfg),
                        VolumeMounts:  mounts.GetVolumeMounts(kubeadmconstants.KubeScheduler),
                        LivenessProbe: staticpodutil.ComponentProbe(10251, "/healthz", v1.URISchemeHTTP),
jlch@mon1:~/gopath/src/github.com/kubernetes/kubernetes$ git diff cmd/kubeadm/app/phases/etcd/local.go
diff --git a/cmd/kubeadm/app/phases/etcd/local.go b/cmd/kubeadm/app/phases/etcd/local.go
index e947794..8cc609a 100644
--- a/cmd/kubeadm/app/phases/etcd/local.go
+++ b/cmd/kubeadm/app/phases/etcd/local.go
@@ -54,6 +54,7 @@ func GetEtcdPodSpec(cfg *kubeadmapi.MasterConfiguration) v1.Pod {
                Name:    kubeadmconstants.Etcd,
                Command: getEtcdCommand(cfg),
                Image:   images.GetCoreImage(kubeadmconstants.Etcd, cfg.ImageRepository, "", cfg.Etcd.Image),
+                ImagePullPolicy: v1.PullIfNotPresent,
                // Mount the etcd datadir path read-write so etcd can store data in a more persistent manner
                VolumeMounts:  []v1.VolumeMount{staticpodutil.NewVolumeMount(etcdVolumeName, cfg.Etcd.DataDir, false)},
                LivenessProbe: staticpodutil.ComponentProbe(2379, "/health", v1.URISchemeHTTP),
jlch@mon1:~/gopath/src/github.com/kubernetes/kubernetes$

make

jlch@mon1:~/gopath/src/github.com/kubernetes/kubernetes$ make
jlch@mon1:~/gopath/src/github.com/kubernetes/kubernetes$ cd _output/
jlch@mon1:~/gopath/src/github.com/kubernetes/kubernetes/_output$ ls
bin  local
jlch@mon1:~/gopath/src/github.com/kubernetes/kubernetes/_output$ cd bin/
jlch@mon1:~/gopath/src/github.com/kubernetes/kubernetes/_output/bin$ ls
apiextensions-apiserver   conversion-gen  defaulter-gen  e2e.test  genfeddocs   genman              genyaml  gke-certificates-controller  hyperkube  kube-aggregator  kube-controller-manager  kubefed  kubemark    kube-scheduler  openapi-gen
cloud-controller-manager  deepcopy-gen    e2e_node.test  gendocs   genkubedocs  genswaggertypedocs  ginkgo   go-bindata                   kubeadm    kube-apiserver   kubectl                  kubelet  kube-proxy  linkcheck       teststale
jlch@mon1:~/gopath/src/github.com/kubernetes/kubernetes/_output/bin$ ./kubeadm version
kubeadm version: &version.Info{Major:"1", Minor:"8+", GitVersion:"v1.8.3-dirty", GitCommit:"f0efb3cb883751c5ffdbe6d515f3cb4fbe7b7acd", GitTreeState:"dirty", BuildDate:"2017-11-20T07:05:42Z", GoVersion:"go1.9.2", Compiler:"gc", Platform:"linux/amd64"}
jlch@mon1:~/gopath/src/github.com/kubernetes/kubernetes/_output/bin$

好了，现在我们要的就是 kubeadm 文件。