v1.27.1 CLI Deprecation (#7311)

* Remove Flannel Wireguard
* Remove etcd-snapshot (implicit save)
* Convert ipsec and multiple backend to fatal

Signed-off-by: Derek Nola <derek.nola@suse.com>

cmd/etcdsnapshot/main.go

@@ -16,7 +16,6 @@ func main() {
 	app := cmds.NewApp()
 	app.Commands = []cli.Command{
 		cmds.NewEtcdSnapshotCommands(
-			etcdsnapshot.Run,
 			etcdsnapshot.Delete,
 			etcdsnapshot.List,
 			etcdsnapshot.Prune,

cmd/k3s/main.go

@@ -63,7 +63,6 @@ func main() {
 			etcdsnapshotCommand,
 			etcdsnapshotCommand,
 			etcdsnapshotCommand,
-			etcdsnapshotCommand,
 		),
 		cmds.NewSecretsEncryptCommands(
 			secretsencryptCommand,

cmd/server/main.go

@@ -56,7 +56,6 @@ func main() {
 			token.List,
 		),
 		cmds.NewEtcdSnapshotCommands(
-			etcdsnapshot.Run,
 			etcdsnapshot.Delete,
 			etcdsnapshot.List,
 			etcdsnapshot.Prune,

main.go

@@ -33,7 +33,6 @@ func main() {
 		cmds.NewKubectlCommand(kubectl.Run),
 		cmds.NewCRICTL(crictl.Run),
 		cmds.NewEtcdSnapshotCommands(
-			etcdsnapshot.Run,
 			etcdsnapshot.Delete,
 			etcdsnapshot.List,
 			etcdsnapshot.Prune,

pkg/agent/flannel/setup.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"fmt"
 	"net"
-	"os/exec"
 	"path/filepath"
 	"strings"
 
@@ -201,16 +200,7 @@ func createFlannelConf(nodeConfig *config.Node) error {
 	backend := parts[0]
 	backendOptions := make(map[string]string)
 	if len(parts) > 1 {
-		logrus.Warnf("The additional options through flannel-backend are deprecated and will be removed in k3s v1.27, use flannel-conf instead")
-		options := strings.Split(parts[1], ",")
-		for _, o := range options {
-			p := strings.SplitN(o, "=", 2)
-			if len(p) == 1 {
-				backendOptions[p[0]] = ""
-			} else {
-				backendOptions[p[0]] = p[1]
-			}
-		}
+		logrus.Fatalf("The additional options through flannel-backend are deprecated and were removed in k3s v1.27, use flannel-conf instead")
 	}
 
 	switch backend {
@@ -219,13 +209,7 @@ func createFlannelConf(nodeConfig *config.Node) error {
 	case config.FlannelBackendHostGW:
 		backendConf = hostGWBackend
 	case config.FlannelBackendIPSEC:
-		backendConf = strings.ReplaceAll(ipsecBackend, "%psk%", nodeConfig.AgentConfig.IPSECPSK)
-		if _, err := exec.LookPath("swanctl"); err != nil {
-			return errors.Wrap(err, "k3s no longer includes strongswan - please install strongswan's swanctl and charon packages on your host")
-		}
-		logrus.Warnf("The ipsec backend is deprecated and will be removed in k3s v1.27; please switch to wireguard-native. Check our docs for information on how to migrate.")
-	case config.FlannelBackendWireguard:
-		logrus.Fatalf("The wireguard backend was deprecated in K3s v1.26, please switch to wireguard-native. Check our docs at docs.k3s.io/installation/network-options for information about how to migrate.")
+		logrus.Fatal("The ipsec backend is deprecated and was removed in k3s v1.27; please switch to wireguard-native. Check our docs for information on how to migrate.")
 	case config.FlannelBackendWireguardNative:
 		mode, ok := backendOptions["Mode"]
 		if !ok {

pkg/cli/cmds/etcd_snapshot.go

@@ -99,14 +99,21 @@ var EtcdSnapshotFlags = []cli.Flag{
 	},
 }
 
-func NewEtcdSnapshotCommands(run, delete, list, prune, save func(ctx *cli.Context) error) cli.Command {
+func NewEtcdSnapshotCommands(delete, list, prune, save func(ctx *cli.Context) error) cli.Command {
 	return cli.Command{
 		Name:            EtcdSnapshotCommand,
 		Usage:           "Trigger an immediate etcd snapshot",
 		SkipFlagParsing: false,
 		SkipArgReorder:  true,
-		Action:          run,
 		Subcommands: []cli.Command{
+			{
+				Name:            "save",
+				Usage:           "Trigger an immediate etcd snapshot",
+				SkipFlagParsing: false,
+				SkipArgReorder:  true,
+				Action:          save,
+				Flags:           EtcdSnapshotFlags,
+			},
 			{
 				Name:            "delete",
 				Usage:           "Delete given snapshot(s)",
@@ -141,14 +148,6 @@ func NewEtcdSnapshotCommands(run, delete, list, prune, save func(ctx *cli.Contex
 					Value:       defaultSnapshotRentention,
 				}),
 			},
-			{
-				Name:            "save",
-				Usage:           "Trigger an immediate etcd snapshot",
-				SkipFlagParsing: false,
-				SkipArgReorder:  true,
-				Action:          save,
-				Flags:           EtcdSnapshotFlags,
-			},
 		},
 		Flags: EtcdSnapshotFlags,
 	}

pkg/cli/etcdsnapshot/etcd_snapshot.go

@@ -69,12 +69,6 @@ func commandSetup(app *cli.Context, cfg *cmds.Server, sc *server.Config) error {
 	return nil
 }
 
-// Run was an alias for Save
-func Run(app *cli.Context) error {
-	cli.ShowAppHelp(app)
-	return fmt.Errorf("saving with etcd-snapshot was deprecated in v1.26, use \"etcd-snapshot save\" instead")
-}
-
 // Save triggers an on-demand etcd snapshot operation
 func Save(app *cli.Context) error {
 	if err := cmds.InitLogging(); err != nil {

pkg/daemons/config/types.go

@@ -24,7 +24,6 @@ const (
 	FlannelBackendVXLAN           = "vxlan"
 	FlannelBackendHostGW          = "host-gw"
 	FlannelBackendIPSEC           = "ipsec"
-	FlannelBackendWireguard       = "wireguard"
 	FlannelBackendWireguardNative = "wireguard-native"
 	EgressSelectorModeAgent       = "agent"
 	EgressSelectorModeCluster     = "cluster"