diff --git a/metropolis/node/kubernetes/kubelet.go b/metropolis/node/kubernetes/kubelet.go
new file mode 100644
index 0000000..e9c6ce5
--- /dev/null
+++ b/metropolis/node/kubernetes/kubelet.go
@@ -0,0 +1,145 @@
+// Copyright 2020 The Monogon Project Authors.
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+// 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 kubernetes
+
+import (
+	"context"
+	"encoding/json"
+	"encoding/pem"
+	"fmt"
+	"io"
+	"net"
+	"os/exec"
+
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	kubeletconfig "k8s.io/kubelet/config/v1beta1"
+
+	"git.monogon.dev/source/nexantic.git/metropolis/node/common/fileargs"
+	"git.monogon.dev/source/nexantic.git/metropolis/node/common/supervisor"
+	"git.monogon.dev/source/nexantic.git/metropolis/node/core/localstorage"
+	"git.monogon.dev/source/nexantic.git/metropolis/node/core/localstorage/declarative"
+	"git.monogon.dev/source/nexantic.git/metropolis/node/kubernetes/pki"
+	"git.monogon.dev/source/nexantic.git/metropolis/node/kubernetes/reconciler"
+)
+
+type kubeletService struct {
+	NodeName           string
+	ClusterDNS         []net.IP
+	KubeletDirectory   *localstorage.DataKubernetesKubeletDirectory
+	EphemeralDirectory *localstorage.EphemeralDirectory
+	Output             io.Writer
+	KPKI               *pki.KubernetesPKI
+}
+
+func (s *kubeletService) createCertificates(ctx context.Context) error {
+	identity := fmt.Sprintf("system:node:%s", s.NodeName)
+
+	ca := s.KPKI.Certificates[pki.IdCA]
+	cacert, _, err := ca.Ensure(ctx, s.KPKI.KV)
+	if err != nil {
+		return fmt.Errorf("could not ensure ca certificate: %w", err)
+	}
+
+	kubeconfig, err := pki.New(ca, "", pki.Client(identity, []string{"system:nodes"})).Kubeconfig(ctx, s.KPKI.KV)
+	if err != nil {
+		return fmt.Errorf("could not create volatile kubelet client cert: %w", err)
+	}
+
+	cert, key, err := pki.New(ca, "", pki.Server([]string{s.NodeName}, nil)).Ensure(ctx, s.KPKI.KV)
+	if err != nil {
+		return fmt.Errorf("could not create volatile kubelet server cert: %w", err)
+	}
+
+	// TODO(q3k): this should probably become its own function //metropolis/node/kubernetes/pki.
+	for _, el := range []struct {
+		target declarative.FilePlacement
+		data   []byte
+	}{
+		{s.KubeletDirectory.Kubeconfig, kubeconfig},
+		{s.KubeletDirectory.PKI.CACertificate, pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: cacert})},
+		{s.KubeletDirectory.PKI.Certificate, pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: cert})},
+		{s.KubeletDirectory.PKI.Key, pem.EncodeToMemory(&pem.Block{Type: "PRIVATE KEY", Bytes: key})},
+	} {
+		if err := el.target.Write(el.data, 0400); err != nil {
+			return fmt.Errorf("could not write %v: %w", el.target, err)
+		}
+	}
+
+	return nil
+}
+
+func (s *kubeletService) configure() *kubeletconfig.KubeletConfiguration {
+	var clusterDNS []string
+	for _, dnsIP := range s.ClusterDNS {
+		clusterDNS = append(clusterDNS, dnsIP.String())
+	}
+
+	return &kubeletconfig.KubeletConfiguration{
+		TypeMeta: v1.TypeMeta{
+			Kind:       "KubeletConfiguration",
+			APIVersion: kubeletconfig.GroupName + "/v1beta1",
+		},
+		TLSCertFile:       s.KubeletDirectory.PKI.Certificate.FullPath(),
+		TLSPrivateKeyFile: s.KubeletDirectory.PKI.Key.FullPath(),
+		TLSMinVersion:     "VersionTLS13",
+		ClusterDNS:        clusterDNS,
+		Authentication: kubeletconfig.KubeletAuthentication{
+			X509: kubeletconfig.KubeletX509Authentication{
+				ClientCAFile: s.KubeletDirectory.PKI.CACertificate.FullPath(),
+			},
+		},
+		// TODO(q3k): move reconciler.False to a generic package, fix the following references.
+		ClusterDomain:                "cluster.local", // cluster.local is hardcoded in the certificate too currently
+		EnableControllerAttachDetach: reconciler.False(),
+		HairpinMode:                  "none",
+		MakeIPTablesUtilChains:       reconciler.False(), // We don't have iptables
+		FailSwapOn:                   reconciler.False(), // Our kernel doesn't have swap enabled which breaks Kubelet's detection
+		KubeReserved: map[string]string{
+			"cpu":    "200m",
+			"memory": "300Mi",
+		},
+
+		// We're not going to use this, but let's make it point to a known-empty directory in case anybody manages to
+		// trigger it.
+		VolumePluginDir: s.EphemeralDirectory.FlexvolumePlugins.FullPath(),
+	}
+}
+
+func (s *kubeletService) Run(ctx context.Context) error {
+	if err := s.createCertificates(ctx); err != nil {
+		return fmt.Errorf("when creating certificates: %w", err)
+	}
+
+	configRaw, err := json.Marshal(s.configure())
+	if err != nil {
+		return fmt.Errorf("when marshaling kubelet configuration: %w", err)
+	}
+
+	fargs, err := fileargs.New()
+	if err != nil {
+		return err
+	}
+	cmd := exec.CommandContext(ctx, "/kubernetes/bin/kube", "kubelet",
+		fargs.FileOpt("--config", "config.json", configRaw),
+		"--container-runtime=remote",
+		fmt.Sprintf("--container-runtime-endpoint=unix://%s", s.EphemeralDirectory.Containerd.ClientSocket.FullPath()),
+		fmt.Sprintf("--kubeconfig=%s", s.KubeletDirectory.Kubeconfig.FullPath()),
+		fmt.Sprintf("--root-dir=%s", s.KubeletDirectory.FullPath()),
+	)
+	cmd.Env = []string{"PATH=/kubernetes/bin"}
+	return supervisor.RunCommand(ctx, cmd)
+}