125 lines
3.6 KiB
Go
125 lines
3.6 KiB
Go
// Copyright 2014 Google Inc. 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 (
|
|
"flag"
|
|
"fmt"
|
|
"net/http"
|
|
_ "net/http/pprof"
|
|
"runtime"
|
|
|
|
"github.com/golang/glog"
|
|
"github.com/google/cadvisor/api"
|
|
"github.com/google/cadvisor/container/docker"
|
|
"github.com/google/cadvisor/container/raw"
|
|
"github.com/google/cadvisor/healthz"
|
|
"github.com/google/cadvisor/info"
|
|
"github.com/google/cadvisor/manager"
|
|
"github.com/google/cadvisor/pages"
|
|
"github.com/google/cadvisor/pages/static"
|
|
)
|
|
|
|
var argPort = flag.Int("port", 8080, "port to listen")
|
|
var maxProcs = flag.Int("max_procs", 0, "max number of CPUs that can be used simultaneously. Less than 1 for default (number of cores).")
|
|
|
|
var argDbDriver = flag.String("storage_driver", "", "storage driver to use. Empty means none. Options are: <empty> (default), bigquery, and influxdb")
|
|
|
|
func main() {
|
|
flag.Parse()
|
|
|
|
setMaxProcs()
|
|
|
|
storageDriver, err := NewStorageDriver(*argDbDriver)
|
|
if err != nil {
|
|
glog.Fatalf("Failed to connect to database: %s", err)
|
|
}
|
|
|
|
containerManager, err := manager.New(storageDriver)
|
|
if err != nil {
|
|
glog.Fatalf("Failed to create a Container Manager: %s", err)
|
|
}
|
|
|
|
// Register Docker.
|
|
if err := docker.Register(containerManager); err != nil {
|
|
glog.Errorf("Docker registration failed: %v.", err)
|
|
}
|
|
|
|
// Register the raw driver.
|
|
if err := raw.Register(containerManager); err != nil {
|
|
glog.Fatalf("raw registration failed: %v.", err)
|
|
}
|
|
|
|
// Basic health handler.
|
|
if err := healthz.RegisterHandler(); err != nil {
|
|
glog.Fatalf("failed to register healthz handler: %s", err)
|
|
}
|
|
|
|
// Handler for static content.
|
|
http.HandleFunc(static.StaticResource, func(w http.ResponseWriter, r *http.Request) {
|
|
err := static.HandleRequest(w, r.URL)
|
|
if err != nil {
|
|
fmt.Fprintf(w, "%s", err)
|
|
}
|
|
})
|
|
|
|
// Register API handler.
|
|
if err := api.RegisterHandlers(containerManager); err != nil {
|
|
glog.Fatalf("failed to register API handlers: %s", err)
|
|
}
|
|
|
|
// Redirect / to containers page.
|
|
http.Handle("/", http.RedirectHandler(pages.ContainersPage, http.StatusTemporaryRedirect))
|
|
|
|
// Register the handler for the containers page.
|
|
http.HandleFunc(pages.ContainersPage, func(w http.ResponseWriter, r *http.Request) {
|
|
err := pages.ServerContainersPage(containerManager, w, r.URL)
|
|
if err != nil {
|
|
fmt.Fprintf(w, "%s", err)
|
|
}
|
|
})
|
|
|
|
defer glog.Flush()
|
|
|
|
go func() {
|
|
glog.Fatal(containerManager.Start())
|
|
}()
|
|
|
|
glog.Infof("Starting cAdvisor version: %q", info.VERSION)
|
|
glog.Infof("About to serve on port %d", *argPort)
|
|
|
|
addr := fmt.Sprintf(":%v", *argPort)
|
|
|
|
glog.Fatal(http.ListenAndServe(addr, nil))
|
|
}
|
|
|
|
func setMaxProcs() {
|
|
// TODO(vmarmol): Consider limiting if we have a CPU mask in effect.
|
|
// Allow as many threads as we have cores unless the user specified a value.
|
|
var numProcs int
|
|
if *maxProcs < 1 {
|
|
numProcs = runtime.NumCPU()
|
|
} else {
|
|
numProcs = *maxProcs
|
|
}
|
|
runtime.GOMAXPROCS(numProcs)
|
|
|
|
// Check if the setting was successful.
|
|
actualNumProcs := runtime.GOMAXPROCS(0)
|
|
if actualNumProcs != numProcs {
|
|
glog.Warningf("Specified max procs of %v but using %v", numProcs, actualNumProcs)
|
|
}
|
|
}
|