126 lines
3.5 KiB
Go
126 lines
3.5 KiB
Go
/*
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Copyright 2020 The Kubernetes Authors All rights reserved.
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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 main
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import (
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"github.com/pkg/errors"
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"k8s.io/minikube/pkg/drivers/kic"
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"k8s.io/minikube/pkg/drivers/kic/oci"
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"k8s.io/minikube/pkg/minikube/bootstrapper/bsutil"
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"k8s.io/minikube/pkg/minikube/bootstrapper/images"
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"k8s.io/minikube/pkg/minikube/command"
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"k8s.io/minikube/pkg/minikube/config"
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"k8s.io/minikube/pkg/minikube/driver"
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"k8s.io/minikube/pkg/minikube/localpath"
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)
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func generateTarball(kubernetesVersion, tarballFilename string) error {
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defer func() {
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if err := deleteMinikube(); err != nil {
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fmt.Println(err)
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}
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}()
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driver := kic.NewDriver(kic.Config{
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KubernetesVersion: kubernetesVersion,
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ContainerRuntime: driver.Docker,
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OCIBinary: oci.Docker,
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MachineName: profile,
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ImageDigest: kic.BaseImage,
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StorePath: localpath.MiniPath(),
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CPU: 2,
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Memory: 4000,
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APIServerPort: 8080,
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})
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baseDir := filepath.Dir(driver.GetSSHKeyPath())
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defer os.Remove(baseDir)
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if err := os.MkdirAll(baseDir, 0755); err != nil {
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return errors.Wrap(err, "mkdir")
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}
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if err := driver.Create(); err != nil {
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return errors.Wrap(err, "creating kic driver")
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}
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// Now, get images to pull
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imgs, err := images.Kubeadm("", kubernetesVersion)
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if err != nil {
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return errors.Wrap(err, "kubeadm images")
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}
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for _, img := range append(imgs, kic.OverlayImage) {
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cmd := exec.Command("docker", "exec", profile, "docker", "pull", img)
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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if err := cmd.Run(); err != nil {
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return errors.Wrapf(err, "downloading %s", img)
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}
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}
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// Transfer in k8s binaries
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kcfg := config.KubernetesConfig{
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KubernetesVersion: kubernetesVersion,
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}
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runner := command.NewKICRunner(profile, driver.OCIBinary)
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if err := bsutil.TransferBinaries(kcfg, runner); err != nil {
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return errors.Wrap(err, "transferring k8s binaries")
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}
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// Create image tarball
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if err := createImageTarball(tarballFilename); err != nil {
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return errors.Wrap(err, "create tarball")
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}
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return copyTarballToHost(tarballFilename)
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}
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func createImageTarball(tarballFilename string) error {
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dirs := []string{
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fmt.Sprintf("./lib/docker/%s", dockerStorageDriver),
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"./lib/docker/image",
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"./lib/minikube/binaries",
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}
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args := []string{"exec", profile, "sudo", "tar", "-I", "lz4", "-C", "/var", "-cvf", tarballFilename}
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args = append(args, dirs...)
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cmd := exec.Command("docker", args...)
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cmd.Stdout = os.Stdout
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if err := cmd.Run(); err != nil {
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return errors.Wrapf(err, "tarball cmd: %s", cmd.Args)
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}
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return nil
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}
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func copyTarballToHost(tarballFilename string) error {
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dest := filepath.Join("out/", tarballFilename)
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cmd := exec.Command("docker", "cp", fmt.Sprintf("%s:/%s", profile, tarballFilename), dest)
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cmd.Stdout = os.Stdout
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if err := cmd.Run(); err != nil {
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return errors.Wrapf(err, "cp cmd: %s", cmd.Args)
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}
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return nil
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}
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func deleteMinikube() error {
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cmd := exec.Command(minikubePath, "delete", "-p", profile)
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cmd.Stdout = os.Stdout
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return cmd.Run()
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}
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