main.go

Documentation: github.com/chaos-mesh/chaos-mesh/cmd/chaos-daemon

     1  // Copyright 2021 Chaos Mesh Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  // http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  //
    15  
    16  package main
    17  
    18  import (
    19  	"flag"
    20  	stdlog "log"
    21  	"os"
    22  	"os/signal"
    23  	"syscall"
    24  
    25  	"github.com/prometheus/client_golang/prometheus"
    26  	"github.com/prometheus/client_golang/prometheus/collectors"
    27  	ctrl "sigs.k8s.io/controller-runtime"
    28  
    29  	"github.com/chaos-mesh/chaos-mesh/pkg/chaosdaemon"
    30  	"github.com/chaos-mesh/chaos-mesh/pkg/chaosdaemon/crclients"
    31  	"github.com/chaos-mesh/chaos-mesh/pkg/fusedev"
    32  	"github.com/chaos-mesh/chaos-mesh/pkg/log"
    33  	"github.com/chaos-mesh/chaos-mesh/pkg/sysfs"
    34  	"github.com/chaos-mesh/chaos-mesh/pkg/version"
    35  )
    36  
    37  var (
    38  	conf = &chaosdaemon.Config{Host: "0.0.0.0", CrClientConfig: &crclients.CrClientConfig{}}
    39  
    40  	printVersion bool
    41  )
    42  
    43  func init() {
    44  	flag.BoolVar(&printVersion, "version", false, "print version information and exit")
    45  	flag.IntVar(&conf.GRPCPort, "grpc-port", 31767, "the port which grpc server listens on")
    46  	flag.IntVar(&conf.HTTPPort, "http-port", 31766, "the port which http server listens on")
    47  	flag.StringVar(&conf.CrClientConfig.Runtime, "runtime", "docker", "current container runtime")
    48  	flag.StringVar(&conf.CrClientConfig.SocketPath, "runtime-socket-path", "", "current container runtime socket path")
    49  	flag.StringVar(&conf.CrClientConfig.ContainerdNS, "containerd-ns", "k8s.io", "namespace used for containerd")
    50  	flag.StringVar(&conf.CaCert, "ca", "", "ca certificate of grpc server")
    51  	flag.StringVar(&conf.Cert, "cert", "", "certificate of grpc server")
    52  	flag.StringVar(&conf.Key, "key", "", "key of grpc server")
    53  	flag.BoolVar(&conf.Profiling, "pprof", false, "enable pprof")
    54  
    55  	flag.Parse()
    56  }
    57  
    58  func main() {
    59  	version.PrintVersionInfo("Chaos-daemon")
    60  
    61  	if printVersion {
    62  		os.Exit(0)
    63  	}
    64  
    65  	rootLogger, err := log.NewDefaultZapLogger()
    66  	if err != nil {
    67  		stdlog.Fatal("failed to create root logger", err)
    68  	}
    69  	rootLogger = rootLogger.WithName("chaos-daemon.daemon-server")
    70  	log.ReplaceGlobals(rootLogger)
    71  	ctrl.SetLogger(rootLogger)
    72  
    73  	reg := prometheus.NewRegistry()
    74  	reg.MustRegister(
    75  		// Use collectors as prometheus functions deprecated
    76  		collectors.NewGoCollector(),
    77  		collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}),
    78  	)
    79  
    80  	rootLogger.Info("grant access to /dev/fuse")
    81  	err = fusedev.GrantAccess()
    82  	if err != nil {
    83  		rootLogger.Error(err, "grant access to /dev/fuse")
    84  	}
    85  
    86  	rootLogger.Info("remount /sys with read-write permission")
    87  	err = sysfs.RemountWithOption()
    88  	if err != nil {
    89  		rootLogger.Error(err, "remount /sys with read-write permission")
    90  	}
    91  
    92  	server, err := chaosdaemon.BuildServer(conf, reg, rootLogger)
    93  	if err != nil {
    94  		rootLogger.Error(err, "build chaos-daemon server")
    95  		os.Exit(1)
    96  	}
    97  
    98  	errs := make(chan error)
    99  	go func() {
   100  		errs <- server.Start()
   101  	}()
   102  
   103  	sigc := make(chan os.Signal, 1)
   104  	signal.Notify(sigc,
   105  		syscall.SIGINT,
   106  		syscall.SIGTERM)
   107  
   108  	select {
   109  	case sig := <-sigc:
   110  		rootLogger.Info("received signal", "signal", sig)
   111  	case err = <-errs:
   112  		if err != nil {
   113  			rootLogger.Error(err, "chaos-daemon runtime")
   114  		}
   115  	}
   116  	if err = server.Shutdown(); err != nil {
   117  		rootLogger.Error(err, "chaos-daemon shutdown")
   118  	}
   119  }
   120