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314 lines
9.7 KiB
314 lines
9.7 KiB
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main // import "k8s.io/helm/cmd/tiller"
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import (
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"fmt"
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"io/ioutil"
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"log"
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"net"
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"net/http"
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"os"
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"strings"
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"github.com/graymeta/stow"
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"github.com/graymeta/stow/azure"
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gcs "github.com/graymeta/stow/google"
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"github.com/graymeta/stow/s3"
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"github.com/graymeta/stow/swift"
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"github.com/spf13/cobra"
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kberrs "k8s.io/kubernetes/pkg/api/errors"
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"k8s.io/kubernetes/pkg/apis/extensions"
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rapi "k8s.io/helm/api"
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rcs "k8s.io/helm/client/clientset"
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"k8s.io/helm/pkg/kube"
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"k8s.io/helm/pkg/proto/hapi/services"
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"k8s.io/helm/pkg/storage"
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"k8s.io/helm/pkg/storage/driver"
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"k8s.io/helm/pkg/tiller"
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"k8s.io/helm/pkg/tiller/environment"
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"k8s.io/helm/pkg/version"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/unversioned"
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"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
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)
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const (
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storageMemory = "memory"
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storageConfigMap = "configmap"
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storageInlineTPR = "inline-tpr"
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storageObjectStoreTPR = "object-store-tpr"
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)
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// rootServer is the root gRPC server.
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//
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// Each gRPC service registers itself to this server during init().
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var rootServer = tiller.NewServer()
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// env is the default environment.
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//
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// Any changes to env should be done before rootServer.Serve() is called.
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var env = environment.New()
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var (
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grpcAddr = ":44134"
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probeAddr = ":44135"
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traceAddr = ":44136"
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enableTracing = false
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store = storageConfigMap
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storageProvider string
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s3ConfigAccessKeyID string
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s3ConfigEndpoint string
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s3ConfigRegion string
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s3ConfigSecretKey string
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gcsConfigJSONKeyPath string
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gcsConfigProjectId string
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azureConfigAccount string
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azureConfigKey string
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swiftConfigKey string
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swiftConfigTenantAuthURL string
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swiftConfigTenantName string
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swiftConfigUsername string
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container string
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storagePrefix string
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)
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const globalUsage = `The Kubernetes Helm server.
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Tiller is the server for Helm. It provides in-cluster resource management.
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By default, Tiller listens for gRPC connections on port 44134.
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`
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var rootCommand = &cobra.Command{
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Use: "tiller",
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Short: "The Kubernetes Helm server.",
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Long: globalUsage,
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Run: start,
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}
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func init() {
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log.SetFlags(log.Flags() | log.Lshortfile)
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}
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func main() {
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p := rootCommand.PersistentFlags()
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p.StringVarP(&grpcAddr, "listen", "l", ":44134", "address:port to listen on")
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p.StringVar(&store, "storage", storageConfigMap, "storage driver to use. One of 'configmap' or 'memory'")
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p.BoolVar(&enableTracing, "trace", false, "enable rpc tracing")
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p.StringVar(&storageProvider, "storage-provider", os.Getenv("STORAGE_PROVIDER"), "Cloud storage provider")
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p.StringVar(&s3ConfigAccessKeyID, s3.Kind+"."+s3.ConfigAccessKeyID, os.Getenv("S3_ACCESS_KEY_ID"), "S3 config access key id")
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p.StringVar(&s3ConfigEndpoint, s3.Kind+"."+s3.ConfigEndpoint, os.Getenv("S3_ENDPOINT"), "S3 config endpoint")
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p.StringVar(&s3ConfigRegion, s3.Kind+"."+s3.ConfigRegion, os.Getenv("S3_REGION"), "S3 config region")
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p.StringVar(&s3ConfigSecretKey, s3.Kind+"."+s3.ConfigSecretKey, os.Getenv("S3_SECRET_KEY"), "S3 config secret key")
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p.StringVar(&gcsConfigJSONKeyPath, gcs.Kind+".json_key_path", os.Getenv("GOOGLE_JSON_KEY_PATH"), "GCS config json key path")
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p.StringVar(&gcsConfigProjectId, gcs.Kind+"."+gcs.ConfigProjectId, os.Getenv("GOOGLE_PROJECT_ID"), "GCS config project id")
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p.StringVar(&azureConfigAccount, azure.Kind+"."+azure.ConfigAccount, os.Getenv("AZURE_ACCOUNT"), "Azure config account")
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p.StringVar(&azureConfigKey, azure.Kind+"."+azure.ConfigKey, os.Getenv("AZURE_KEY"), "Azure config key")
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p.StringVar(&swiftConfigKey, swift.Kind+"."+swift.ConfigKey, os.Getenv("SWIFT_KEY"), "Swift config key")
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p.StringVar(&swiftConfigTenantAuthURL, swift.Kind+"."+swift.ConfigTenantAuthURL, os.Getenv("SWIFT_TENANT_AUTH_URL"), "Swift teanant auth url")
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p.StringVar(&swiftConfigTenantName, swift.Kind+"."+swift.ConfigTenantName, os.Getenv("SWIFT_TENANT_NAME"), "Swift tenant name")
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p.StringVar(&swiftConfigUsername, swift.Kind+"."+swift.ConfigUsername, os.Getenv("SWIFT_USERNAME"), "Swift username")
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p.StringVar(&container, "storage-container", os.Getenv("STORAGE_CONTAINER"), "Name of container")
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p.StringVar(&storagePrefix, "storage-prefix", "tiller", "Prefix to container key where release data is stored")
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if err := rootCommand.Execute(); err != nil {
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fmt.Fprint(os.Stderr, err)
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os.Exit(1)
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}
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}
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func start(c *cobra.Command, args []string) {
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kc := kube.New(nil)
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clientcfg, err := kc.ClientConfig()
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if err != nil {
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fmt.Fprintf(os.Stderr, "Cannot initialize Kubernetes connection: %s\n", err)
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os.Exit(1)
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}
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clientset, err := kc.ClientSet()
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if err != nil {
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fmt.Fprintf(os.Stderr, "Cannot initialize Kubernetes connection: %s\n", err)
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os.Exit(1)
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}
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switch store {
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case storageMemory:
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env.Releases = storage.Init(driver.NewMemory())
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case storageConfigMap:
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env.Releases = storage.Init(driver.NewConfigMaps(clientset.Core().ConfigMaps(namespace())))
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case storageInlineTPR:
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ensureResource(clientset)
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cs := rcs.NewExtensionsForConfigOrDie(clientcfg)
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env.Releases = storage.Init(driver.NewReleases(cs.Release(namespace())))
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case storageObjectStoreTPR:
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ensureResource(clientset)
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stowCfg := stow.ConfigMap{}
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switch storageProvider {
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case s3.Kind:
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if s3ConfigAccessKeyID != "" {
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stowCfg[s3.ConfigAccessKeyID] = s3ConfigAccessKeyID
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}
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if s3ConfigEndpoint != "" {
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stowCfg[s3.ConfigEndpoint] = s3ConfigEndpoint
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}
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if s3ConfigRegion != "" {
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stowCfg[s3.ConfigRegion] = s3ConfigRegion
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}
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if s3ConfigSecretKey != "" {
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stowCfg[s3.ConfigSecretKey] = s3ConfigSecretKey
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}
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case gcs.Kind:
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if gcsConfigJSONKeyPath != "" {
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jsonKey, err := ioutil.ReadFile(gcsConfigJSONKeyPath)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Cannot read json key file: %v\n", err)
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os.Exit(1)
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}
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stowCfg[gcs.ConfigJSON] = string(jsonKey)
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}
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if gcsConfigProjectId != "" {
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stowCfg[gcs.ConfigProjectId] = gcsConfigProjectId
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}
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case azure.Kind:
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if azureConfigAccount != "" {
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stowCfg[azure.ConfigAccount] = azureConfigAccount
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}
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if azureConfigKey != "" {
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stowCfg[azure.ConfigKey] = azureConfigKey
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}
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case swift.Kind:
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if swiftConfigKey != "" {
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stowCfg[swift.ConfigKey] = swiftConfigKey
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}
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if swiftConfigTenantAuthURL != "" {
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stowCfg[swift.ConfigTenantAuthURL] = swiftConfigTenantAuthURL
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}
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if swiftConfigTenantName != "" {
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stowCfg[swift.ConfigTenantName] = swiftConfigTenantName
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}
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if swiftConfigUsername != "" {
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stowCfg[swift.ConfigUsername] = swiftConfigUsername
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}
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default:
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fmt.Fprintf(os.Stderr, "Unknown provider: %v\n", storageProvider)
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os.Exit(1)
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}
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loc, err := stow.Dial(storageProvider, stowCfg)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Cannot connect to object store: %v\n", err)
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os.Exit(1)
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}
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c, err := loc.Container(container)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Cannot find container: %v\n", err)
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os.Exit(1)
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}
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cs := rcs.NewExtensionsForConfigOrDie(clientcfg)
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env.Releases = storage.Init(driver.NewObjectStoreReleases(cs.Release(namespace()), c, storagePrefix))
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}
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lstn, err := net.Listen("tcp", grpcAddr)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Server died: %v\n", err)
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os.Exit(1)
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}
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fmt.Printf("Starting Tiller %s\n", version.GetVersion())
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fmt.Printf("GRPC listening on %s\n", grpcAddr)
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fmt.Printf("Probes listening on %s\n", probeAddr)
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fmt.Printf("Storage driver is %s\n", env.Releases.Name())
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if enableTracing {
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startTracing(traceAddr)
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}
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srvErrCh := make(chan error)
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probeErrCh := make(chan error)
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go func() {
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svc := tiller.NewReleaseServer(env, clientset)
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services.RegisterReleaseServiceServer(rootServer, svc)
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if err := rootServer.Serve(lstn); err != nil {
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srvErrCh <- err
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}
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}()
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go func() {
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mux := newProbesMux()
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if err := http.ListenAndServe(probeAddr, mux); err != nil {
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probeErrCh <- err
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}
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}()
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select {
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case err := <-srvErrCh:
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fmt.Fprintf(os.Stderr, "Server died: %s\n", err)
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os.Exit(1)
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case err := <-probeErrCh:
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fmt.Fprintf(os.Stderr, "Probes server died: %s\n", err)
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}
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}
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// namespace returns the namespace of tiller
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func namespace() string {
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if ns := os.Getenv("TILLER_NAMESPACE"); ns != "" {
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return ns
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}
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// Fall back to the namespace associated with the service account token, if available
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if data, err := ioutil.ReadFile("/var/run/secrets/kubernetes.io/serviceaccount/namespace"); err == nil {
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if ns := strings.TrimSpace(string(data)); len(ns) > 0 {
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return ns
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}
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}
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return environment.DefaultTillerNamespace
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}
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func ensureResource(clientset *internalclientset.Clientset) {
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_, err := clientset.Extensions().ThirdPartyResources().Get("release." + rapi.V1alpha1SchemeGroupVersion.Group)
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if kberrs.IsNotFound(err) {
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tpr := &extensions.ThirdPartyResource{
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TypeMeta: unversioned.TypeMeta{
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APIVersion: "extensions/v1alpha1",
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Kind: "ThirdPartyResource",
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},
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ObjectMeta: api.ObjectMeta{
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Name: "release." + rapi.V1alpha1SchemeGroupVersion.Group,
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},
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Versions: []extensions.APIVersion{
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{
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Name: rapi.V1alpha1SchemeGroupVersion.Version,
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},
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},
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}
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_, err := clientset.Extensions().ThirdPartyResources().Create(tpr)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to create third party resource: %s\n", err)
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os.Exit(1)
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}
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}
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}
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