mirror of https://github.com/fluxcd/flux2.git
Stefan Prodan
4 years ago
committed by
GitHub
commit
8ca6e44de7
@ -0,0 +1,201 @@
|
||||
/*
|
||||
Copyright 2020 The Flux CD contributors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"fmt"
|
||||
|
||||
"github.com/spf13/cobra"
|
||||
corev1 "k8s.io/api/core/v1"
|
||||
rbacv1 "k8s.io/api/rbac/v1"
|
||||
"k8s.io/apimachinery/pkg/api/equality"
|
||||
"k8s.io/apimachinery/pkg/api/errors"
|
||||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
||||
"k8s.io/apimachinery/pkg/types"
|
||||
"sigs.k8s.io/controller-runtime/pkg/client"
|
||||
"sigs.k8s.io/yaml"
|
||||
)
|
||||
|
||||
var createTenantCmd = &cobra.Command{
|
||||
Use: "tenant",
|
||||
Short: "Create or update a tenant",
|
||||
Long: `
|
||||
The create tenant command generates a namespace and a role binding to limit the
|
||||
reconcilers scope to the tenant namespace.`,
|
||||
RunE: createTenantCmdRun,
|
||||
}
|
||||
|
||||
func init() {
|
||||
createCmd.AddCommand(createTenantCmd)
|
||||
}
|
||||
|
||||
func createTenantCmdRun(cmd *cobra.Command, args []string) error {
|
||||
if len(args) < 1 {
|
||||
return fmt.Errorf("tenant name is required")
|
||||
}
|
||||
tenant := args[0]
|
||||
|
||||
objLabels, err := parseLabels()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
namespace := corev1.Namespace{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: tenant,
|
||||
Labels: objLabels,
|
||||
},
|
||||
}
|
||||
|
||||
roleBinding := rbacv1.RoleBinding{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "gotk-reconciler",
|
||||
Namespace: tenant,
|
||||
Labels: objLabels,
|
||||
},
|
||||
Subjects: []rbacv1.Subject{
|
||||
{
|
||||
APIGroup: "rbac.authorization.k8s.io",
|
||||
Kind: "User",
|
||||
Name: fmt.Sprintf("gotk:%s:reconciler", tenant),
|
||||
},
|
||||
},
|
||||
RoleRef: rbacv1.RoleRef{
|
||||
APIGroup: "rbac.authorization.k8s.io",
|
||||
Kind: "ClusterRole",
|
||||
Name: "cluster-admin",
|
||||
},
|
||||
}
|
||||
|
||||
if export {
|
||||
return exportTenant(namespace, roleBinding)
|
||||
}
|
||||
|
||||
ctx, cancel := context.WithTimeout(context.Background(), timeout)
|
||||
defer cancel()
|
||||
|
||||
kubeClient, err := utils.kubeClient(kubeconfig)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
logger.Actionf("applying namespace %s", namespace.Name)
|
||||
if err := upsertNamespace(ctx, kubeClient, namespace); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
logger.Actionf("applying role binding %s", roleBinding.Name)
|
||||
if err := upsertRoleBinding(ctx, kubeClient, roleBinding); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
logger.Successf("tenant setup completed")
|
||||
return nil
|
||||
}
|
||||
|
||||
func upsertNamespace(ctx context.Context, kubeClient client.Client, namespace corev1.Namespace) error {
|
||||
namespacedName := types.NamespacedName{
|
||||
Namespace: namespace.GetNamespace(),
|
||||
Name: namespace.GetName(),
|
||||
}
|
||||
|
||||
var existing corev1.Namespace
|
||||
err := kubeClient.Get(ctx, namespacedName, &existing)
|
||||
if err != nil {
|
||||
if errors.IsNotFound(err) {
|
||||
if err := kubeClient.Create(ctx, &namespace); err != nil {
|
||||
return err
|
||||
} else {
|
||||
return nil
|
||||
}
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
if !equality.Semantic.DeepDerivative(namespace.Labels, existing.Labels) {
|
||||
existing.Labels = namespace.Labels
|
||||
if err := kubeClient.Update(ctx, &existing); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func upsertRoleBinding(ctx context.Context, kubeClient client.Client, roleBinding rbacv1.RoleBinding) error {
|
||||
namespacedName := types.NamespacedName{
|
||||
Namespace: roleBinding.GetNamespace(),
|
||||
Name: roleBinding.GetName(),
|
||||
}
|
||||
|
||||
var existing rbacv1.RoleBinding
|
||||
err := kubeClient.Get(ctx, namespacedName, &existing)
|
||||
if err != nil {
|
||||
if errors.IsNotFound(err) {
|
||||
if err := kubeClient.Create(ctx, &roleBinding); err != nil {
|
||||
return err
|
||||
} else {
|
||||
return nil
|
||||
}
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
if !equality.Semantic.DeepDerivative(roleBinding.Subjects, existing.Subjects) ||
|
||||
!equality.Semantic.DeepDerivative(roleBinding.RoleRef, existing.RoleRef) ||
|
||||
!equality.Semantic.DeepDerivative(roleBinding.Labels, existing.Labels) {
|
||||
if err := kubeClient.Delete(ctx, &existing); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := kubeClient.Create(ctx, &roleBinding); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func exportTenant(namespace corev1.Namespace, roleBinding rbacv1.RoleBinding) error {
|
||||
namespace.TypeMeta = metav1.TypeMeta{
|
||||
APIVersion: "v1",
|
||||
Kind: "Namespace",
|
||||
}
|
||||
data, err := yaml.Marshal(namespace)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
fmt.Println("---")
|
||||
data = bytes.Replace(data, []byte("spec: {}\n"), []byte(""), 1)
|
||||
fmt.Println(resourceToString(data))
|
||||
|
||||
roleBinding.TypeMeta = metav1.TypeMeta{
|
||||
APIVersion: "rbac.authorization.k8s.io/v1",
|
||||
Kind: "RoleBinding",
|
||||
}
|
||||
data, err = yaml.Marshal(roleBinding)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
fmt.Println("---")
|
||||
fmt.Println(resourceToString(data))
|
||||
|
||||
return nil
|
||||
}
|
||||
@ -0,0 +1,36 @@
|
||||
## gotk create tenant
|
||||
|
||||
Create or update a tenant
|
||||
|
||||
### Synopsis
|
||||
|
||||
|
||||
The create tenant command generates a namespace and a role binding to limit the
|
||||
reconcilers scope to the tenant namespace.
|
||||
|
||||
```
|
||||
gotk create tenant [flags]
|
||||
```
|
||||
|
||||
### Options
|
||||
|
||||
```
|
||||
-h, --help help for tenant
|
||||
```
|
||||
|
||||
### Options inherited from parent commands
|
||||
|
||||
```
|
||||
--export export in YAML format to stdout
|
||||
--interval duration source sync interval (default 1m0s)
|
||||
--kubeconfig string path to the kubeconfig file (default "~/.kube/config")
|
||||
--label strings set labels on the resource (can specify multiple labels with commas: label1=value1,label2=value2)
|
||||
-n, --namespace string the namespace scope for this operation (default "gitops-system")
|
||||
--timeout duration timeout for this operation (default 5m0s)
|
||||
--verbose print generated objects
|
||||
```
|
||||
|
||||
### SEE ALSO
|
||||
|
||||
* [gotk create](gotk_create.md) - Create or update sources and resources
|
||||
|
||||
Loading…
Reference in New Issue