Matches ctl version to upstream

clitools/pkg/node/crio.go

@@ -2,21 +2,61 @@ package node
 
 import (
 	"context"
+	"fmt"
+	"os"
+	"strings"
 
 	"k8s.io/klog/v2"
+	system "undecided.project/monok8s/pkg/system"
 )
 
-func InstallCNIIfRequested(context.Context, *NodeContext) error {
-	klog.Info("install_cni_if_requested: TODO implement bridge/none CNI toggling")
+func ConfigureDefaultCNI(ctx context.Context, n *NodeContext) error {
+	_ = ctx
+
+	const (
+		cniDir       = "/etc/cni/net.d"
+		enabledPath  = cniDir + "/10-crio-bridge.conflist"
+		disabledPath = cniDir + "/10-crio-bridge.conflist.disabled"
+	)
+
+	plugin := strings.TrimSpace(n.Config.Spec.CNIPlugin)
+
+	switch plugin {
+	case "none":
+		// Fail hard if we cannot ensure the default bridge CNI is disabled.
+		if _, err := os.Stat(enabledPath); err == nil {
+			if err := os.Rename(enabledPath, disabledPath); err != nil {
+				return fmt.Errorf("disable default CRI-O bridge CNI: %w", err)
+			}
+		} else if !os.IsNotExist(err) {
+			return fmt.Errorf("stat %s: %w", enabledPath, err)
+		}
+
+		klog.Infof("Default CRI-O bridge CNI disabled")
+		return nil
+
+	case "bridge":
+		fallthrough
+	case "default":
+		// Fail soft. User can still install or provide their own CNI.
+		if _, err := os.Stat(disabledPath); err == nil {
+			if err := os.Rename(disabledPath, enabledPath); err != nil {
+				klog.Warningf("failed enabling default CRI-O bridge CNI: %v", err)
+				return nil
+			}
+		} else if !os.IsNotExist(err) {
+			klog.Warningf("failed stating %s while enabling default CRI-O bridge CNI: %v", disabledPath, err)
+			return nil
+		}
+
+		klog.Infof("Default CRI-O bridge CNI enabled")
+		return nil
+
+	}
+	klog.Infof("unsupported CNIPlugin: %q", plugin)
 	return nil
 }
 
-func StartCRIO(context.Context, *NodeContext) error {
-	klog.Info("start_crio: TODO implement rc-service crio start")
-	return nil
-}
-
-func CheckCRIORunning(context.Context, *NodeContext) error {
-	klog.Info("check_crio_running: TODO implement crictl readiness checks")
-	return nil
+func StartCRIO(ctx context.Context, n *NodeContext) error {
+	return system.EnsureServiceRunning(ctx, n.SystemRunner, "crio")
 }