mirror of https://github.com/linkerd/linkerd2.git
104 lines
2.9 KiB
Go
104 lines
2.9 KiB
Go
package cmd
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import (
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"context"
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"fmt"
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"os"
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pkgCmd "github.com/linkerd/linkerd2/pkg/cmd"
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"github.com/linkerd/linkerd2/pkg/k8s"
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"github.com/linkerd/linkerd2/pkg/k8s/resource"
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"github.com/spf13/cobra"
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v1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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func newCmdUninstall() *cobra.Command {
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cmd := &cobra.Command{
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Use: "uninstall",
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Args: cobra.NoArgs,
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Short: "Output Kubernetes resources to uninstall the linkerd-viz extension",
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Long: `Output Kubernetes resources to uninstall the linkerd-viz extension.
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This command provides all Kubernetes namespace-scoped and cluster-scoped resources (e.g services, deployments, RBACs, etc.) necessary to uninstall the Linkerd-viz extension.`,
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Example: `linkerd viz uninstall | kubectl delete -f -`,
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RunE: func(cmd *cobra.Command, args []string) error {
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err := uninstallRunE(cmd.Context())
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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return nil
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},
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}
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return cmd
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}
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func uninstallRunE(ctx context.Context) error {
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k8sAPI, err := k8s.NewAPI(kubeconfigPath, kubeContext, impersonate, impersonateGroup, 0)
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if err != nil {
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return err
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}
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selector, err := pkgCmd.GetLabelSelector(k8s.LinkerdExtensionLabel, ExtensionName, LegacyExtensionName)
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if err != nil {
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return err
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}
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// / `Uninstall` deletes cluster-scoped resources created by the extension
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// (including the extension's namespace).
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if err := pkgCmd.Uninstall(ctx, k8sAPI, selector); err != nil {
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return err
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}
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// delete any HTTPRoute, AuthorizationPolicy, and Server resources created
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// by the viz extension in any namespace.
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//
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// note that these are not deleted by the `Uninstall` call above, because
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// they are namespaced resources.
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policy := k8sAPI.L5dCrdClient.PolicyV1alpha1()
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authzs, err := policy.AuthorizationPolicies(v1.NamespaceAll).List(ctx, metav1.ListOptions{LabelSelector: selector})
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if err != nil {
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return err
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}
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for _, authz := range authzs.Items {
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if err := deleteResource(authz.TypeMeta, authz.ObjectMeta); err != nil {
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return err
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}
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}
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rts, err := policy.HTTPRoutes(v1.NamespaceAll).List(ctx, metav1.ListOptions{LabelSelector: selector})
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if err != nil {
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return err
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}
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for _, rt := range rts.Items {
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if err := deleteResource(rt.TypeMeta, rt.ObjectMeta); err != nil {
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return err
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}
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}
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srvs, err := k8sAPI.L5dCrdClient.ServerV1beta1().Servers(v1.NamespaceAll).List(ctx, metav1.ListOptions{LabelSelector: selector})
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if err != nil {
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return err
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}
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for _, srv := range srvs.Items {
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if err := deleteResource(srv.TypeMeta, srv.ObjectMeta); err != nil {
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return err
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}
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}
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return nil
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}
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func deleteResource(ty metav1.TypeMeta, meta metav1.ObjectMeta) error {
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r := resource.NewNamespaced(ty.APIVersion, ty.Kind, meta.Name, meta.Namespace)
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if err := r.RenderResource(os.Stdout); err != nil {
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return fmt.Errorf("error rendering Kubernetes resource: %w", err)
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}
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return nil
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}
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