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registry_app.go
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registry_app.go
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// Copyright (c) arkade author(s) 2022. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
package apps
import (
"fmt"
"log"
"os"
"path"
"strconv"
"golang.org/x/crypto/bcrypt"
"github.com/alexellis/arkade/pkg"
"github.com/alexellis/arkade/pkg/config"
"github.com/alexellis/arkade/pkg/env"
"github.com/alexellis/arkade/pkg/helm"
"github.com/alexellis/arkade/pkg/k8s"
"github.com/sethvargo/go-password/password"
"github.com/spf13/cobra"
)
func MakeInstallRegistry() *cobra.Command {
var registry = &cobra.Command{
Use: "docker-registry",
Short: "Install a community maintained Docker registry chart",
Long: `Install a community maintained Docker registry chart for more info
Check out the project's repo https://github.com/twuni/docker-registry.helm
Or the Open Source Docker registry https://github.com/distribution/distribution`,
Example: ` arkade install registry --namespace default`,
SilenceUsage: true,
}
registry.Flags().StringP("namespace", "n", "default", "The namespace used for installation")
registry.Flags().Bool("update-repo", true, "Update the helm repo")
registry.Flags().StringP("username", "u", "admin", "Username for the registry")
registry.Flags().StringP("password", "p", "", "Password for the registry, leave blank to generate")
registry.Flags().StringP("write-file", "w", "", "Write generated password to this file")
registry.Flags().Bool("persistence", false, "Enable persistence")
registry.Flags().StringArray("set", []string{},
"Use custom flags or override existing flags \n(example --set persistence.enabled=true)")
registry.RunE = func(command *cobra.Command, args []string) error {
kubeConfigPath, _ := command.Flags().GetString("kubeconfig")
if err := config.SetKubeconfig(kubeConfigPath); err != nil {
return err
}
wait, _ := command.Flags().GetBool("wait")
updateRepo, _ := registry.Flags().GetBool("update-repo")
userPath, err := config.InitUserDir()
if err != nil {
return err
}
namespace, _ := command.Flags().GetString("namespace")
if namespace != "default" {
return fmt.Errorf(`to override the "default", install via tiller`)
}
outputFile, _ := command.Flags().GetString("write-file")
clientArch, clientOS := env.GetClientArch()
fmt.Printf("Client: %s, %s\n", clientArch, clientOS)
log.Printf("User dir established as: %s\n", userPath)
os.Setenv("HELM_HOME", path.Join(userPath, ".helm"))
_, err = helm.TryDownloadHelm(userPath, clientArch, clientOS)
if err != nil {
return err
}
username, _ := command.Flags().GetString("username")
pass, _ := command.Flags().GetString("password")
if len(pass) == 0 {
key, err := password.Generate(20, 10, 0, false, true)
if err != nil {
return err
}
pass = key
}
val, err := bcrypt.GenerateFromPassword([]byte(pass), bcrypt.DefaultCost)
if err != nil {
return err
}
htPasswd := fmt.Sprintf("%s:%s\n", username, string(val))
err = helm.AddHelmRepo("twuni", "https://twuni.github.io/docker-registry.helm", updateRepo)
if err != nil {
return err
}
chartPath := path.Join(os.TempDir(), "charts")
err = helm.FetchChart("twuni/docker-registry", defaultVersion)
if err != nil {
return err
}
persistence, err := registry.Flags().GetBool("persistence")
if err != nil {
return err
}
overrides := map[string]string{}
overrides["persistence.enabled"] = strconv.FormatBool(persistence)
overrides["secrets.htpasswd"] = htPasswd
customFlags, err := command.Flags().GetStringArray("set")
if err != nil {
return err
}
if err = config.MergeFlags(overrides, customFlags); err != nil {
return err
}
arch := k8s.GetNodeArchitecture()
fmt.Printf("Node architecture: %q\n", arch)
fmt.Println("Chart path: ", chartPath)
ns := "default"
err = helm.Helm3Upgrade("twuni/docker-registry", ns,
"values.yaml",
defaultVersion,
overrides,
wait)
if err != nil {
return err
}
fmt.Println(registryInstallMsg)
if len(outputFile) > 0 {
err := os.WriteFile(outputFile, []byte(pass), 0600)
if err != nil {
return err
}
fmt.Printf("See %s for credentials\n", outputFile)
} else {
fmt.Printf(fmt.Sprintf("Registry credentials: %s %s\nexport PASSWORD=%s\n", username, pass, pass))
}
return nil
}
return registry
}
const RegistryInfoMsg = `# Your docker-registry has been configured
kubectl logs deploy/docker-registry
export IP="192.168.0.11" # Set to WiFI/ethernet adapter
export PASSWORD="" # See below
kubectl port-forward svc/docker-registry --address 0.0.0.0 5000 &
docker login $IP:5000 --username admin --password $PASSWORD
docker tag alpine:3.11 $IP:5000/alpine:3.11
docker push $IP:5000/alpine:3.11
# This chart is community maintained.
# Find out more at:
# https://github.com/twuni/docker-registry.helm
# https://github.com/distribution/distribution`
const registryInstallMsg = `=======================================================================
= docker-registry has been installed. =
=======================================================================` +
"\n\n" + RegistryInfoMsg + "\n\n" + pkg.SupportMessageShort