mirror of https://github.com/fluxcd/flux2.git
Concept: `encrypt init` command for SOPS bootstrap
Signed-off-by: Hidde Beydals <hello@hidde.co>pull/1620/head
Hidde Beydals
4 years ago
parent
fd364828a1
commit
4c0987a9a6
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/*
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Copyright 2021 The Flux 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 main
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import (
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"github.com/spf13/cobra"
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)
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var encryptCmd = &cobra.Command{
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Use: "encrypt",
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Short: "Encrypt secrets using SOPS",
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Long: "The encrypt sub-commands initialise and manage Secret encryption using SOPS.",
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}
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type encryptFlags struct {
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export bool
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}
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var encryptArgs encryptFlags
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func init() {
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encryptCmd.PersistentFlags().BoolVar(&encryptArgs.export, "export", false, "export in YAML format to stdout")
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rootCmd.AddCommand(encryptCmd)
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}
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@ -0,0 +1,113 @@
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/*
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Copyright 2021 The Flux 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 main
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import (
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"context"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"filippo.io/age"
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"github.com/fluxcd/flux2/internal/utils"
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"github.com/go-git/go-git/v5"
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"github.com/spf13/cobra"
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corev1 "k8s.io/api/core/v1"
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v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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var encryptInitCmd = &cobra.Command{
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Use: "init",
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Short: "Init SOPS encryption with age identity",
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Long: "The encryption init command creates a new age identity and writes a .sops.yaml file to the current working directory.",
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Example: ` # Init SOPS encryption with a new age identity
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flux encryption init`,
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RunE: encryptInitCmdRun,
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}
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func init() {
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encryptCmd.AddCommand(encryptInitCmd)
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}
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func encryptInitCmdRun(cmd *cobra.Command, args []string) error {
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// Confirm our current path is in a Git repository
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path, err := os.Getwd()
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if err != nil {
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return err
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}
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if _, err := git.PlainOpen(path); err != nil {
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if err == git.ErrRepositoryNotExists {
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err = fmt.Errorf("'%s' is not in a Git repository", path)
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}
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return err
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}
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// Abort early if .sops.yaml already exists
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sopsCfgPath := filepath.Join(path, ".sops.yaml")
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if _, err := os.Stat(sopsCfgPath); err == nil || os.IsExist(err) {
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return fmt.Errorf("'%s' already contains a .sops.yaml config", path)
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}
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// Generate a new identity
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i, err := age.GenerateX25519Identity()
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if err != nil {
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return err
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}
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logger.Successf("Generated identity %s", i.Recipient().String())
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// Attempt to configure identity in .sops.yaml
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const sopsCfg = `creation_rules:
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- path_regex: .*.yaml
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encrypted_regex: ^(data|stringData)$
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age: %s
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`
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if err := ioutil.WriteFile(sopsCfgPath, []byte(fmt.Sprintf(sopsCfg, i.Recipient().String())), 0644); err != nil {
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logger.Failuref("Failed to write recipient to .sops.yaml file")
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return err
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}
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logger.Successf("Configured recipient in .sops.yaml file")
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// Init client
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ctx, cancel := context.WithTimeout(context.Background(), rootArgs.timeout)
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defer cancel()
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kubeClient, err := utils.KubeClient(rootArgs.kubeconfig, rootArgs.kubecontext)
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if err != nil {
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return err
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}
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// Create a secret
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secret := &corev1.Secret{
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ObjectMeta: v1.ObjectMeta{
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Name: "sops-age",
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Namespace: rootArgs.namespace,
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},
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StringData: map[string]string{
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"flux-auto.age": i.String(),
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},
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}
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if err := kubeClient.Create(ctx, secret); err != nil {
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return err
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}
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logger.Successf(`Secret '%s' with private key created`, secret.Name)
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// TODO(hidde): lookup kustomize based on path ref? Do direct cluster mutation? (Preferably not!)
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// Feels something is missing in general to provide a user experience improving bridge between "die hard"
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// `--export` and "please do not do this" direct-apply-to-cluster.
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return nil
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}
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