Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 1 | // Copyright 2020 The Monogon Project Authors. |
| 2 | // |
| 3 | // SPDX-License-Identifier: Apache-2.0 |
| 4 | // |
| 5 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | // you may not use this file except in compliance with the License. |
| 7 | // You may obtain a copy of the License at |
| 8 | // |
| 9 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | // |
| 11 | // Unless required by applicable law or agreed to in writing, software |
| 12 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | // See the License for the specific language governing permissions and |
| 15 | // limitations under the License. |
| 16 | |
| 17 | package node |
| 18 | |
| 19 | import ( |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 20 | "bytes" |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 21 | "context" |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 22 | "crypto/ed25519" |
| 23 | "crypto/rand" |
| 24 | "crypto/sha512" |
| 25 | "crypto/tls" |
| 26 | "crypto/x509" |
| 27 | "crypto/x509/pkix" |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 28 | "encoding/hex" |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 29 | "errors" |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 30 | "flag" |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 31 | "fmt" |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 32 | "git.monogon.dev/source/nexantic.git/core/internal/containerd" |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 33 | "io/ioutil" |
| 34 | "math/big" |
| 35 | "net" |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 36 | "os" |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 37 | "strings" |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 38 | "time" |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 39 | |
| 40 | apipb "git.monogon.dev/source/nexantic.git/core/generated/api" |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 41 | "git.monogon.dev/source/nexantic.git/core/internal/api" |
| 42 | "git.monogon.dev/source/nexantic.git/core/internal/common" |
| 43 | "git.monogon.dev/source/nexantic.git/core/internal/consensus" |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 44 | "git.monogon.dev/source/nexantic.git/core/internal/integrity/tpm2" |
Lorenz Brun | 6e8f69c | 2019-11-18 10:44:24 +0100 | [diff] [blame] | 45 | "git.monogon.dev/source/nexantic.git/core/internal/kubernetes" |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 46 | "git.monogon.dev/source/nexantic.git/core/internal/network" |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 47 | "git.monogon.dev/source/nexantic.git/core/internal/storage" |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 48 | "golang.org/x/sys/unix" |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 49 | |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 50 | "github.com/cenkalti/backoff/v4" |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 51 | "github.com/gogo/protobuf/proto" |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 52 | "go.uber.org/zap" |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 53 | "google.golang.org/grpc" |
| 54 | "google.golang.org/grpc/credentials" |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 55 | ) |
| 56 | |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 57 | var ( |
| 58 | // From RFC 5280 Section 4.1.2.5 |
| 59 | unknownNotAfter = time.Unix(253402300799, 0) |
| 60 | ) |
| 61 | |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 62 | type ( |
| 63 | SmalltownNode struct { |
Lorenz Brun | 6e8f69c | 2019-11-18 10:44:24 +0100 | [diff] [blame] | 64 | Api *api.Server |
| 65 | Consensus *consensus.Service |
| 66 | Storage *storage.Manager |
| 67 | Kubernetes *kubernetes.Service |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 68 | Containerd *containerd.Service |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 69 | Network *network.Service |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 70 | |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 71 | logger *zap.Logger |
| 72 | state common.SmalltownState |
| 73 | hostname string |
| 74 | enrolmentConfig *apipb.EnrolmentConfig |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 75 | |
| 76 | debugServer *grpc.Server |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 77 | } |
| 78 | ) |
| 79 | |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 80 | func NewSmalltownNode(logger *zap.Logger, ntwk *network.Service, strg *storage.Manager) (*SmalltownNode, error) { |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 81 | flag.Parse() |
| 82 | logger.Info("Creating Smalltown node") |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 83 | ctx := context.Background() |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 84 | |
Leopold Schabel | 68c5875 | 2019-11-14 21:00:59 +0100 | [diff] [blame] | 85 | hostname, err := os.Hostname() |
| 86 | if err != nil { |
| 87 | panic(err) |
| 88 | } |
| 89 | |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 90 | // Wait for IP adddress... |
| 91 | ctxT, ctxTC := context.WithTimeout(ctx, time.Second*10) |
| 92 | defer ctxTC() |
| 93 | externalIP, err := ntwk.GetIP(ctxT, true) |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 94 | if err != nil { |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 95 | logger.Panic("Could not get IP address", zap.Error(err)) |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 96 | } |
| 97 | |
| 98 | // Important to know if the GetIP above hangs |
| 99 | logger.Info("Node has IP", zap.String("ip", externalIP.String())) |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 100 | |
| 101 | consensusService, err := consensus.NewConsensusService(consensus.Config{ |
Lorenz Brun | 6e8f69c | 2019-11-18 10:44:24 +0100 | [diff] [blame] | 102 | Name: hostname, |
Lorenz Brun | 6e8f69c | 2019-11-18 10:44:24 +0100 | [diff] [blame] | 103 | ListenHost: "0.0.0.0", |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 104 | ExternalHost: externalIP.String(), |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 105 | }, logger.With(zap.String("module", "consensus"))) |
| 106 | if err != nil { |
| 107 | return nil, err |
| 108 | } |
| 109 | |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 110 | containerdService, err := containerd.New() |
| 111 | if err != nil { |
| 112 | return nil, err |
| 113 | } |
| 114 | |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 115 | s := &SmalltownNode{ |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 116 | Consensus: consensusService, |
| 117 | Containerd: containerdService, |
| 118 | Storage: strg, |
| 119 | Network: ntwk, |
| 120 | logger: logger, |
| 121 | hostname: hostname, |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 122 | } |
| 123 | |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 124 | apiService, err := api.NewApiServer(&api.Config{}, logger.With(zap.String("module", "api")), s.Consensus) |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 125 | if err != nil { |
| 126 | return nil, err |
| 127 | } |
| 128 | |
| 129 | s.Api = apiService |
| 130 | |
Lorenz Brun | 0db90ba | 2020-04-06 14:04:52 +0200 | [diff] [blame] | 131 | s.Kubernetes = kubernetes.New(logger.With(zap.String("module", "kubernetes")), consensusService, strg) |
Lorenz Brun | 6e8f69c | 2019-11-18 10:44:24 +0100 | [diff] [blame] | 132 | |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 133 | s.debugServer = grpc.NewServer() |
| 134 | apipb.RegisterNodeDebugServiceServer(s.debugServer, s) |
| 135 | |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 136 | logger.Info("Created SmalltownNode") |
| 137 | |
| 138 | return s, nil |
| 139 | } |
| 140 | |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 141 | func (s *SmalltownNode) Start(ctx context.Context) error { |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 142 | s.logger.Info("Starting Smalltown node") |
| 143 | |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 144 | s.startDebugSvc() |
| 145 | |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 146 | // TODO(lorenz): Abstracting enrolment sounds like a good idea, but ends up being painful |
| 147 | // because of things like storage access. I'm keeping it this way until the more complex |
| 148 | // enrolment procedures are fleshed out. This is also a bit panic()-happy, but there is really |
| 149 | // no good way out of an invalid enrolment configuration. |
| 150 | enrolmentPath, err := s.Storage.GetPathInPlace(storage.PlaceESP, "enrolment.pb") |
| 151 | if err != nil { |
| 152 | s.logger.Panic("ESP configuration partition not available", zap.Error(err)) |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 153 | } |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 154 | enrolmentConfigRaw, err := ioutil.ReadFile(enrolmentPath) |
| 155 | if err == nil { |
| 156 | // We have an enrolment file, let's check its contents |
| 157 | var enrolmentConfig apipb.EnrolmentConfig |
| 158 | if err := proto.Unmarshal(enrolmentConfigRaw, &enrolmentConfig); err != nil { |
| 159 | s.logger.Panic("Invalid enrolment configuration provided", zap.Error(err)) |
| 160 | } |
| 161 | s.enrolmentConfig = &enrolmentConfig |
| 162 | // The enrolment secret is only zeroed after |
| 163 | if len(enrolmentConfig.EnrolmentSecret) == 0 { |
| 164 | return s.startFull() |
| 165 | } |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 166 | return s.startEnrolling(ctx) |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 167 | } else if os.IsNotExist(err) { |
| 168 | // This is ok like this, once a new cluster has been set up the initial node also generates |
| 169 | // its own enrolment config |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 170 | return s.startForSetup(ctx) |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 171 | } |
| 172 | // Unknown error reading enrolment config (disk issues/invalid configuration format/...) |
| 173 | s.logger.Panic("Invalid enrolment configuration provided", zap.Error(err)) |
| 174 | panic("Unreachable") |
| 175 | } |
| 176 | |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 177 | func (s *SmalltownNode) startDebugSvc() { |
| 178 | debugListenHost := fmt.Sprintf(":%v", common.DebugServicePort) |
| 179 | debugListener, err := net.Listen("tcp", debugListenHost) |
| 180 | if err != nil { |
| 181 | s.logger.Fatal("failed to listen", zap.Error(err)) |
| 182 | } |
| 183 | |
| 184 | go func() { |
| 185 | if err := s.debugServer.Serve(debugListener); err != nil { |
| 186 | s.logger.Fatal("failed to serve", zap.Error(err)) |
| 187 | } |
| 188 | }() |
| 189 | } |
| 190 | |
| 191 | func (s *SmalltownNode) initHostname() error { |
| 192 | if err := unix.Sethostname([]byte(s.hostname)); err != nil { |
| 193 | return err |
| 194 | } |
| 195 | if err := ioutil.WriteFile("/etc/hosts", []byte(fmt.Sprintf("%v %v", "127.0.0.1", s.hostname)), 0644); err != nil { |
| 196 | return err |
| 197 | } |
| 198 | return ioutil.WriteFile("/etc/machine-id", []byte(strings.TrimPrefix(s.hostname, "smalltown-")), 0644) |
| 199 | } |
| 200 | |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 201 | func (s *SmalltownNode) startEnrolling(ctx context.Context) error { |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 202 | s.logger.Info("Initializing subsystems for enrolment") |
| 203 | s.state = common.StateEnrollMode |
| 204 | |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 205 | nodeInfo, nodeID, err := s.InitializeNode(ctx) |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 206 | if err != nil { |
| 207 | return err |
| 208 | } |
| 209 | |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 210 | s.hostname = nodeID |
| 211 | if err := s.initHostname(); err != nil { |
| 212 | return err |
| 213 | } |
| 214 | |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 215 | // We only support TPM2 at the moment, any abstractions here would be premature |
| 216 | trustAgent := tpm2.TPM2Agent{} |
| 217 | |
| 218 | initializeOp := func() error { |
| 219 | if err := trustAgent.Initialize(*nodeInfo, *s.enrolmentConfig); err != nil { |
| 220 | s.logger.Warn("Failed to initialize integrity backend", zap.Error(err)) |
| 221 | return err |
| 222 | } |
| 223 | return nil |
| 224 | } |
| 225 | |
| 226 | if err := backoff.Retry(initializeOp, getIntegrityBackoff()); err != nil { |
| 227 | panic("invariant violated: integrity initialization retry can never fail") |
| 228 | } |
| 229 | |
| 230 | enrolmentPath, err := s.Storage.GetPathInPlace(storage.PlaceESP, "enrolment.pb") |
| 231 | if err != nil { |
| 232 | panic(err) |
| 233 | } |
| 234 | |
| 235 | s.enrolmentConfig.EnrolmentSecret = []byte{} |
| 236 | s.enrolmentConfig.NodeId = nodeID |
| 237 | |
| 238 | enrolmentConfigRaw, err := proto.Marshal(s.enrolmentConfig) |
| 239 | if err != nil { |
| 240 | panic(err) |
| 241 | } |
| 242 | if err := ioutil.WriteFile(enrolmentPath, enrolmentConfigRaw, 0600); err != nil { |
| 243 | return err |
| 244 | } |
| 245 | s.logger.Info("Node successfully enrolled") |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 246 | |
| 247 | return nil |
| 248 | } |
| 249 | |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 250 | func (s *SmalltownNode) startForSetup(ctx context.Context) error { |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 251 | s.logger.Info("Setting up a new cluster") |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 252 | initData, nodeID, err := s.InitializeNode(ctx) |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 253 | if err != nil { |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 254 | return err |
| 255 | } |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 256 | s.hostname = nodeID |
| 257 | if err := s.initHostname(); err != nil { |
| 258 | return err |
| 259 | } |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 260 | |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 261 | if err := s.initNodeAPI(); err != nil { |
| 262 | return err |
| 263 | } |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 264 | |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 265 | // TODO: Use supervisor.Run for this |
| 266 | go s.Containerd.Run()(context.TODO()) |
| 267 | |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 268 | dataPath, err := s.Storage.GetPathInPlace(storage.PlaceData, "etcd") |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 269 | if err != nil { |
| 270 | return err |
| 271 | } |
| 272 | |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 273 | // Spin up etcd |
| 274 | config := s.Consensus.GetConfig() |
| 275 | config.NewCluster = true |
| 276 | config.Name = s.hostname |
| 277 | config.DataDir = dataPath |
| 278 | s.Consensus.SetConfig(config) |
| 279 | |
| 280 | // Generate the cluster CA and store it to local storage. |
| 281 | if err := s.Consensus.PrecreateCA(); err != nil { |
| 282 | return err |
| 283 | } |
| 284 | |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 285 | err = s.Consensus.Start() |
| 286 | if err != nil { |
| 287 | return err |
| 288 | } |
| 289 | |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 290 | // Now that the cluster is up and running, we can persist the CA to the cluster. |
| 291 | if err := s.Consensus.InjectCA(); err != nil { |
| 292 | return err |
| 293 | } |
| 294 | |
| 295 | if err := s.Api.BootstrapNewClusterHook(initData); err != nil { |
| 296 | return err |
| 297 | } |
| 298 | |
| 299 | if err := s.Kubernetes.NewCluster(); err != nil { |
| 300 | return err |
| 301 | } |
| 302 | |
| 303 | if err := s.Kubernetes.Start(); err != nil { |
| 304 | return err |
| 305 | } |
| 306 | |
| 307 | if err := s.Api.Start(); err != nil { |
| 308 | s.logger.Error("Failed to start the API service", zap.Error(err)) |
| 309 | return err |
| 310 | } |
| 311 | |
| 312 | enrolmentPath, err := s.Storage.GetPathInPlace(storage.PlaceESP, "enrolment.pb") |
| 313 | if err != nil { |
| 314 | panic(err) |
| 315 | } |
| 316 | |
| 317 | masterCert, err := s.Api.GetMasterCert() |
| 318 | if err != nil { |
| 319 | return err |
| 320 | } |
| 321 | |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 322 | ip, err := s.Network.GetIP(ctx, true) |
| 323 | if err != nil { |
| 324 | return fmt.Errorf("could not get node IP: %v", err) |
| 325 | } |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 326 | enrolmentConfig := &apipb.EnrolmentConfig{ |
| 327 | EnrolmentSecret: []byte{}, // First node is always already enrolled |
| 328 | MastersCert: masterCert, |
Serge Bazanski | cdb8c78 | 2020-02-17 12:34:02 +0100 | [diff] [blame] | 329 | MasterIps: [][]byte{[]byte(*ip)}, |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 330 | NodeId: nodeID, |
| 331 | } |
| 332 | enrolmentConfigRaw, err := proto.Marshal(enrolmentConfig) |
| 333 | if err != nil { |
| 334 | panic(err) |
| 335 | } |
| 336 | if err := ioutil.WriteFile(enrolmentPath, enrolmentConfigRaw, 0600); err != nil { |
| 337 | return err |
| 338 | } |
| 339 | masterCertFingerprint := sha512.Sum512_256(masterCert) |
| 340 | s.logger.Info("New Smalltown cluster successfully bootstrapped", zap.Binary("fingerprint", masterCertFingerprint[:])) |
| 341 | |
| 342 | return nil |
| 343 | } |
| 344 | |
| 345 | func (s *SmalltownNode) generateNodeID() ([]byte, string, error) { |
| 346 | serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 127) |
| 347 | serialNumber, err := rand.Int(rand.Reader, serialNumberLimit) |
| 348 | if err != nil { |
| 349 | return []byte{}, "", fmt.Errorf("Failed to generate serial number: %w", err) |
| 350 | } |
| 351 | |
| 352 | pubKey, privKeyRaw, err := ed25519.GenerateKey(rand.Reader) |
| 353 | if err != nil { |
| 354 | return []byte{}, "", err |
| 355 | } |
| 356 | privkey, err := x509.MarshalPKCS8PrivateKey(privKeyRaw) |
| 357 | if err != nil { |
| 358 | return []byte{}, "", err |
| 359 | } |
| 360 | |
| 361 | nodeKeyPath, err := s.Storage.GetPathInPlace(storage.PlaceData, "node-key.der") |
| 362 | if err != nil { |
| 363 | return []byte{}, "", err |
| 364 | } |
| 365 | |
| 366 | if err := ioutil.WriteFile(nodeKeyPath, privkey, 0600); err != nil { |
| 367 | return []byte{}, "", fmt.Errorf("failed to write node key: %w", err) |
| 368 | } |
| 369 | |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 370 | name := "smalltown-" + hex.EncodeToString([]byte(pubKey[:16])) |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 371 | |
| 372 | // This has no SANs because it authenticates by public key, not by name |
| 373 | nodeCert := &x509.Certificate{ |
| 374 | SerialNumber: serialNumber, |
| 375 | Subject: pkix.Name{ |
| 376 | // We identify nodes by their ID public keys (not hashed since a strong hash is longer and serves no benefit) |
| 377 | CommonName: name, |
| 378 | }, |
| 379 | IsCA: false, |
| 380 | BasicConstraintsValid: true, |
| 381 | NotBefore: time.Now(), |
| 382 | NotAfter: unknownNotAfter, |
| 383 | // Certificate is used both as server & client |
| 384 | ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth, x509.ExtKeyUsageServerAuth}, |
| 385 | } |
| 386 | cert, err := x509.CreateCertificate(rand.Reader, nodeCert, nodeCert, pubKey, privKeyRaw) |
| 387 | if err != nil { |
| 388 | return []byte{}, "", err |
| 389 | } |
| 390 | |
| 391 | nodeCertPath, err := s.Storage.GetPathInPlace(storage.PlaceData, "node.der") |
| 392 | if err != nil { |
| 393 | return []byte{}, "", err |
| 394 | } |
| 395 | |
| 396 | if err := ioutil.WriteFile(nodeCertPath, cert, 0600); err != nil { |
| 397 | return []byte{}, "", fmt.Errorf("failed to write node cert: %w", err) |
| 398 | } |
| 399 | return cert, name, nil |
| 400 | } |
| 401 | |
| 402 | func (s *SmalltownNode) initNodeAPI() error { |
| 403 | certPath, err := s.Storage.GetPathInPlace(storage.PlaceData, "node.der") |
| 404 | if err != nil { |
| 405 | s.logger.Panic("Invariant violated: Data is available once this is called") |
| 406 | } |
| 407 | keyPath, err := s.Storage.GetPathInPlace(storage.PlaceData, "node-key.der") |
| 408 | if err != nil { |
| 409 | s.logger.Panic("Invariant violated: Data is available once this is called") |
| 410 | } |
| 411 | |
| 412 | certRaw, err := ioutil.ReadFile(certPath) |
| 413 | if err != nil { |
| 414 | return err |
| 415 | } |
| 416 | privKeyRaw, err := ioutil.ReadFile(keyPath) |
| 417 | if err != nil { |
| 418 | return err |
| 419 | } |
| 420 | |
| 421 | var nodeID tls.Certificate |
| 422 | |
| 423 | cert, err := x509.ParseCertificate(certRaw) |
| 424 | if err != nil { |
| 425 | return err |
| 426 | } |
| 427 | |
| 428 | privKey, err := x509.ParsePKCS8PrivateKey(privKeyRaw) |
| 429 | if err != nil { |
| 430 | return err |
| 431 | } |
| 432 | |
| 433 | nodeID.Certificate = [][]byte{certRaw} |
| 434 | nodeID.PrivateKey = privKey |
| 435 | nodeID.Leaf = cert |
| 436 | |
| 437 | secureTransport := &tls.Config{ |
| 438 | Certificates: []tls.Certificate{nodeID}, |
| 439 | ClientAuth: tls.RequireAndVerifyClientCert, |
| 440 | InsecureSkipVerify: true, |
| 441 | // Critical function, please review any changes with care |
| 442 | // TODO(lorenz): Actively check that this actually provides the security guarantees that we need |
| 443 | VerifyPeerCertificate: func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error { |
| 444 | for _, cert := range rawCerts { |
| 445 | // X.509 certificates in DER can be compared like this since DER has a unique representation |
| 446 | // for each certificate. |
| 447 | if bytes.Equal(cert, s.enrolmentConfig.MastersCert) { |
| 448 | return nil |
| 449 | } |
| 450 | } |
| 451 | return errors.New("failed to find authorized NMS certificate") |
| 452 | }, |
| 453 | MinVersion: tls.VersionTLS13, |
| 454 | } |
| 455 | secureTransportCreds := credentials.NewTLS(secureTransport) |
| 456 | |
| 457 | masterListenHost := fmt.Sprintf(":%d", common.NodeServicePort) |
| 458 | lis, err := net.Listen("tcp", masterListenHost) |
| 459 | if err != nil { |
| 460 | s.logger.Fatal("failed to listen", zap.Error(err)) |
| 461 | } |
| 462 | |
| 463 | nodeGRPCServer := grpc.NewServer(grpc.Creds(secureTransportCreds)) |
| 464 | apipb.RegisterNodeServiceServer(nodeGRPCServer, s) |
| 465 | go func() { |
| 466 | if err := nodeGRPCServer.Serve(lis); err != nil { |
| 467 | panic(err) // Can only happen during initialization and is always fatal |
| 468 | } |
| 469 | }() |
| 470 | return nil |
| 471 | } |
| 472 | |
| 473 | func getIntegrityBackoff() *backoff.ExponentialBackOff { |
| 474 | unlockBackoff := backoff.NewExponentialBackOff() |
| 475 | unlockBackoff.MaxElapsedTime = time.Duration(0) |
| 476 | unlockBackoff.InitialInterval = 5 * time.Second |
| 477 | unlockBackoff.MaxInterval = 5 * time.Minute |
| 478 | return unlockBackoff |
| 479 | } |
| 480 | |
| 481 | func (s *SmalltownNode) startFull() error { |
| 482 | s.logger.Info("Initializing subsystems for production") |
| 483 | s.state = common.StateJoined |
| 484 | |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 485 | s.hostname = s.enrolmentConfig.NodeId |
| 486 | if err := s.initHostname(); err != nil { |
| 487 | return err |
| 488 | } |
| 489 | |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 490 | trustAgent := tpm2.TPM2Agent{} |
| 491 | unlockOp := func() error { |
| 492 | unlockKey, err := trustAgent.Unlock(*s.enrolmentConfig) |
| 493 | if err != nil { |
| 494 | s.logger.Warn("Failed to unlock", zap.Error(err)) |
| 495 | return err |
| 496 | } |
| 497 | if err := s.Storage.MountData(unlockKey); err != nil { |
| 498 | s.logger.Panic("Failed to mount storage", zap.Error(err)) |
| 499 | return err |
| 500 | } |
| 501 | return nil |
| 502 | } |
| 503 | |
| 504 | if err := backoff.Retry(unlockOp, getIntegrityBackoff()); err != nil { |
| 505 | s.logger.Panic("Invariant violated: Unlock retry can never fail") |
| 506 | } |
| 507 | |
| 508 | s.initNodeAPI() |
| 509 | |
Lorenz Brun | 878f5f9 | 2020-05-12 16:15:39 +0200 | [diff] [blame] | 510 | // TODO: Use supervisor.Run for this |
| 511 | go s.Containerd.Run()(context.TODO()) |
| 512 | |
Lorenz Brun | aa6b734 | 2019-12-12 02:55:02 +0100 | [diff] [blame] | 513 | err := s.Consensus.Start() |
| 514 | if err != nil { |
| 515 | return err |
| 516 | } |
| 517 | |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 518 | err = s.Api.Start() |
| 519 | if err != nil { |
| 520 | s.logger.Error("Failed to start the API service", zap.Error(err)) |
| 521 | return err |
| 522 | } |
| 523 | |
Lorenz Brun | 6e8f69c | 2019-11-18 10:44:24 +0100 | [diff] [blame] | 524 | err = s.Kubernetes.Start() |
| 525 | if err != nil { |
| 526 | s.logger.Error("Failed to start the Kubernetes Service", zap.Error(err)) |
| 527 | } |
| 528 | |
Hendrik Hofstadt | 0d7c91e | 2019-10-23 21:44:47 +0200 | [diff] [blame] | 529 | return nil |
| 530 | } |
| 531 | |
| 532 | func (s *SmalltownNode) Stop() error { |
| 533 | s.logger.Info("Stopping Smalltown node") |
| 534 | return nil |
| 535 | } |