mirror of https://github.com/helm/helm
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
158 lines
3.9 KiB
158 lines
3.9 KiB
/*
|
|
Copyright 2016 The Kubernetes Authors All rights reserved.
|
|
|
|
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 main // import "k8s.io/helm/cmd/tiller"
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"log"
|
|
"net"
|
|
"net/http"
|
|
"os"
|
|
"strings"
|
|
|
|
"github.com/spf13/cobra"
|
|
|
|
"k8s.io/helm/pkg/kube"
|
|
"k8s.io/helm/pkg/proto/hapi/services"
|
|
"k8s.io/helm/pkg/storage"
|
|
"k8s.io/helm/pkg/storage/driver"
|
|
"k8s.io/helm/pkg/tiller"
|
|
"k8s.io/helm/pkg/tiller/environment"
|
|
"k8s.io/helm/pkg/version"
|
|
)
|
|
|
|
const (
|
|
storageMemory = "memory"
|
|
storageConfigMap = "configmap"
|
|
)
|
|
|
|
// rootServer is the root gRPC server.
|
|
//
|
|
// Each gRPC service registers itself to this server during init().
|
|
var rootServer = tiller.NewServer()
|
|
|
|
// env is the default environment.
|
|
//
|
|
// Any changes to env should be done before rootServer.Serve() is called.
|
|
var env = environment.New()
|
|
|
|
var (
|
|
grpcAddr = ":44134"
|
|
probeAddr = ":44135"
|
|
traceAddr = ":44136"
|
|
enableTracing = false
|
|
store = storageConfigMap
|
|
)
|
|
|
|
const globalUsage = `The Kubernetes Helm server.
|
|
|
|
Tiller is the server for Helm. It provides in-cluster resource management.
|
|
|
|
By default, Tiller listens for gRPC connections on port 44134.
|
|
`
|
|
|
|
var rootCommand = &cobra.Command{
|
|
Use: "tiller",
|
|
Short: "The Kubernetes Helm server.",
|
|
Long: globalUsage,
|
|
Run: start,
|
|
}
|
|
|
|
func init() {
|
|
log.SetFlags(log.Flags() | log.Lshortfile)
|
|
}
|
|
|
|
func main() {
|
|
p := rootCommand.PersistentFlags()
|
|
p.StringVarP(&grpcAddr, "listen", "l", ":44134", "address:port to listen on")
|
|
p.StringVar(&store, "storage", storageConfigMap, "storage driver to use. One of 'configmap' or 'memory'")
|
|
p.BoolVar(&enableTracing, "trace", false, "enable rpc tracing")
|
|
rootCommand.Execute()
|
|
}
|
|
|
|
func start(c *cobra.Command, args []string) {
|
|
clientset, err := kube.New(nil).ClientSet()
|
|
if err != nil {
|
|
fmt.Fprintf(os.Stderr, "Cannot initialize Kubernetes connection: %s\n", err)
|
|
os.Exit(1)
|
|
}
|
|
|
|
switch store {
|
|
case storageMemory:
|
|
env.Releases = storage.Init(driver.NewMemory())
|
|
case storageConfigMap:
|
|
env.Releases = storage.Init(driver.NewConfigMaps(clientset.Core().ConfigMaps(namespace())))
|
|
}
|
|
|
|
lstn, err := net.Listen("tcp", grpcAddr)
|
|
if err != nil {
|
|
fmt.Fprintf(os.Stderr, "Server died: %s\n", err)
|
|
os.Exit(1)
|
|
}
|
|
|
|
fmt.Printf("Starting Tiller %s\n", version.GetVersion())
|
|
fmt.Printf("GRPC listening on %s\n", grpcAddr)
|
|
fmt.Printf("Probes listening on %s\n", probeAddr)
|
|
fmt.Printf("Storage driver is %s\n", env.Releases.Name())
|
|
|
|
if enableTracing {
|
|
startTracing(traceAddr)
|
|
}
|
|
|
|
srvErrCh := make(chan error)
|
|
probeErrCh := make(chan error)
|
|
go func() {
|
|
svc := tiller.NewReleaseServer(env, clientset)
|
|
services.RegisterReleaseServiceServer(rootServer, svc)
|
|
if err := rootServer.Serve(lstn); err != nil {
|
|
srvErrCh <- err
|
|
}
|
|
}()
|
|
|
|
go func() {
|
|
mux := newProbesMux()
|
|
if err := http.ListenAndServe(probeAddr, mux); err != nil {
|
|
probeErrCh <- err
|
|
}
|
|
}()
|
|
|
|
select {
|
|
case err := <-srvErrCh:
|
|
fmt.Fprintf(os.Stderr, "Server died: %s\n", err)
|
|
os.Exit(1)
|
|
case err := <-probeErrCh:
|
|
fmt.Fprintf(os.Stderr, "Probes server died: %s\n", err)
|
|
}
|
|
}
|
|
|
|
// namespace returns the namespace of tiller
|
|
func namespace() string {
|
|
if ns := os.Getenv("TILLER_NAMESPACE"); ns != "" {
|
|
return ns
|
|
}
|
|
|
|
// Fall back to the namespace associated with the service account token, if available
|
|
if data, err := ioutil.ReadFile("/var/run/secrets/kubernetes.io/serviceaccount/namespace"); err == nil {
|
|
if ns := strings.TrimSpace(string(data)); len(ns) > 0 {
|
|
return ns
|
|
}
|
|
}
|
|
|
|
return environment.DefaultTillerNamespace
|
|
}
|