kubelet: Set --config to avoid using legacy defaults

Fixes #12164

Author: BoleynSu

pkg/daemons/agent/agent_linux.go

@@ -13,6 +13,7 @@ import (
 	"github.com/k3s-io/k3s/pkg/cgroups"
 	"github.com/k3s-io/k3s/pkg/daemons/config"
 	"github.com/k3s-io/k3s/pkg/util"
+	"github.com/k3s-io/k3s/pkg/version"
 	"github.com/sirupsen/logrus"
 	"golang.org/x/sys/unix"
 	kubeletconfig "k8s.io/kubelet/config/v1beta1"
@@ -75,6 +76,7 @@ func kubeletArgsAndConfig(cfg *config.Agent) (map[string]string, *kubeletconfig.
 		return nil, nil, err
 	}
 	argsMap := map[string]string{
+		"config": filepath.Join(cfg.KubeletConfigDir, "00-"+version.Program+"-defaults.conf"),
 		"config-dir": cfg.KubeletConfigDir,
 		"kubeconfig": cfg.KubeConfigKubelet,
 	}

pkg/daemons/agent/agent_windows.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/k3s-io/k3s/pkg/daemons/config"
 	"github.com/k3s-io/k3s/pkg/util"
+	"github.com/k3s-io/k3s/pkg/version"
 	"github.com/sirupsen/logrus"
 	kubeletconfig "k8s.io/kubelet/config/v1beta1"
 	utilsnet "k8s.io/utils/net"
@@ -48,6 +49,7 @@ func kubeletArgsAndConfig(cfg *config.Agent) (map[string]string, *kubeletconfig.
 		return nil, nil, err
 	}
 	argsMap := map[string]string{
+		"config": filepath.Join(cfg.KubeletConfigDir, "00-"+version.Program+"-defaults.conf"),
 		"config-dir": cfg.KubeletConfigDir,
 		"kubeconfig": cfg.KubeConfigKubelet,
 	}