示例#1
0
func TestReporter(t *testing.T) {
	want := report.MakeReport()
	pod1ID := report.MakePodNodeID("ping", "pong-a")
	pod2ID := report.MakePodNodeID("ping", "pong-b")
	serviceID := report.MakeServiceNodeID("ping", "pongservice")
	want.Pod = report.MakeTopology().AddNode(pod1ID, report.MakeNodeWith(map[string]string{
		kubernetes.PodID:           "ping/pong-a",
		kubernetes.PodName:         "pong-a",
		kubernetes.Namespace:       "ping",
		kubernetes.PodCreated:      pod1.Created(),
		kubernetes.PodContainerIDs: "container1 container2",
		kubernetes.ServiceIDs:      "ping/pongservice",
	}).WithParents(report.Sets{
		report.Service: report.MakeStringSet(serviceID),
	})).AddNode(pod2ID, report.MakeNodeWith(map[string]string{
		kubernetes.PodID:           "ping/pong-b",
		kubernetes.PodName:         "pong-b",
		kubernetes.Namespace:       "ping",
		kubernetes.PodCreated:      pod1.Created(),
		kubernetes.PodContainerIDs: "container3 container4",
		kubernetes.ServiceIDs:      "ping/pongservice",
	}).WithParents(report.Sets{
		report.Service: report.MakeStringSet(serviceID),
	}))
	want.Service = report.MakeTopology().AddNode(serviceID, report.MakeNodeWith(map[string]string{
		kubernetes.ServiceID:      "ping/pongservice",
		kubernetes.ServiceName:    "pongservice",
		kubernetes.Namespace:      "ping",
		kubernetes.ServiceCreated: pod1.Created(),
	}))
	want.Container = report.MakeTopology().AddNode(report.MakeContainerNodeID("container1"), report.MakeNodeWith(map[string]string{
		kubernetes.PodID:     "ping/pong-a",
		kubernetes.Namespace: "ping",
	}).WithParents(report.Sets{
		report.Pod: report.MakeStringSet(pod1ID),
	})).AddNode(report.MakeContainerNodeID("container2"), report.MakeNodeWith(map[string]string{
		kubernetes.PodID:     "ping/pong-a",
		kubernetes.Namespace: "ping",
	}).WithParents(report.Sets{
		report.Pod: report.MakeStringSet(pod1ID),
	})).AddNode(report.MakeContainerNodeID("container3"), report.MakeNodeWith(map[string]string{
		kubernetes.PodID:     "ping/pong-b",
		kubernetes.Namespace: "ping",
	}).WithParents(report.Sets{
		report.Pod: report.MakeStringSet(pod2ID),
	})).AddNode(report.MakeContainerNodeID("container4"), report.MakeNodeWith(map[string]string{
		kubernetes.PodID:     "ping/pong-b",
		kubernetes.Namespace: "ping",
	}).WithParents(report.Sets{
		report.Pod: report.MakeStringSet(pod2ID),
	}))

	reporter := kubernetes.NewReporter(mockClientInstance)
	have, _ := reporter.Report()
	if !reflect.DeepEqual(want, have) {
		t.Errorf("%s", test.Diff(want, have))
	}
}
示例#2
0
func TestReporter(t *testing.T) {
	pod1ID := report.MakePodNodeID("ping", "pong-a")
	pod2ID := report.MakePodNodeID("ping", "pong-b")
	serviceID := report.MakeServiceNodeID("ping", "pongservice")
	rpt, _ := kubernetes.NewReporter(mockClientInstance).Report()

	// Reporter should have added the following pods
	for _, pod := range []struct {
		id            string
		parentService string
		latest        map[string]string
	}{
		{pod1ID, serviceID, map[string]string{
			kubernetes.PodID:           "ping/pong-a",
			kubernetes.PodName:         "pong-a",
			kubernetes.Namespace:       "ping",
			kubernetes.PodCreated:      pod1.Created(),
			kubernetes.PodContainerIDs: "container1 container2",
			kubernetes.ServiceIDs:      "ping/pongservice",
		}},
		{pod2ID, serviceID, map[string]string{
			kubernetes.PodID:           "ping/pong-b",
			kubernetes.PodName:         "pong-b",
			kubernetes.Namespace:       "ping",
			kubernetes.PodCreated:      pod1.Created(),
			kubernetes.PodContainerIDs: "container3 container4",
			kubernetes.ServiceIDs:      "ping/pongservice",
		}},
	} {
		node, ok := rpt.Pod.Nodes[pod.id]
		if !ok {
			t.Errorf("Expected report to have pod %q, but not found", pod.id)
		}

		if parents, ok := node.Parents.Lookup(report.Service); !ok || !parents.Contains(pod.parentService) {
			t.Errorf("Expected pod %s to have parent service %q, got %q", pod.id, pod.parentService, parents)
		}

		for k, want := range pod.latest {
			if have, ok := node.Latest.Lookup(k); !ok || have != want {
				t.Errorf("Expected pod %s latest %q: %q, got %q", pod.id, k, want, have)
			}
		}
	}

	// Reporter should have added a service
	{
		node, ok := rpt.Service.Nodes[serviceID]
		if !ok {
			t.Errorf("Expected report to have service %q, but not found", serviceID)
		}

		for k, want := range map[string]string{
			kubernetes.ServiceID:      "ping/pongservice",
			kubernetes.ServiceName:    "pongservice",
			kubernetes.Namespace:      "ping",
			kubernetes.ServiceCreated: pod1.Created(),
		} {
			if have, ok := node.Latest.Lookup(k); !ok || have != want {
				t.Errorf("Expected service %s latest %q: %q, got %q", serviceID, k, want, have)
			}
		}
	}

	// Reporter should have tagged the containers
	for _, pod := range []struct {
		id, nodeID string
		containers []string
	}{
		{"ping/pong-a", pod1ID, []string{"container1", "container2"}},
		{"ping/pong-b", pod2ID, []string{"container3", "container4"}},
	} {
		for _, containerID := range pod.containers {
			node, ok := rpt.Container.Nodes[report.MakeContainerNodeID(containerID)]
			if !ok {
				t.Errorf("Expected report to have container %q, but not found", containerID)
			}
			// container should have pod id
			if have, ok := node.Latest.Lookup(kubernetes.PodID); !ok || have != pod.id {
				t.Errorf("Expected container %s latest %q: %q, got %q", containerID, kubernetes.PodID, pod.id, have)
			}
			// container should have namespace
			if have, ok := node.Latest.Lookup(kubernetes.Namespace); !ok || have != "ping" {
				t.Errorf("Expected container %s latest %q: %q, got %q", containerID, kubernetes.Namespace, "ping", have)
			}
			// container should have pod parent
			if parents, ok := node.Parents.Lookup(report.Pod); !ok || !parents.Contains(pod.nodeID) {
				t.Errorf("Expected container %s to have parent service %q, got %q", containerID, pod.nodeID, parents)
			}
		}
	}
}
示例#3
0
文件: probe.go 项目: pauloheck/scope
// Main runs the probe
func probeMain() {
	var (
		targets         = []string{fmt.Sprintf("localhost:%d", xfer.AppPort)}
		token           = flag.String("token", "default-token", "probe token")
		httpListen      = flag.String("http.listen", "", "listen address for HTTP profiling and instrumentation server")
		publishInterval = flag.Duration("publish.interval", 3*time.Second, "publish (output) interval")
		spyInterval     = flag.Duration("spy.interval", time.Second, "spy (scan) interval")
		spyProcs        = flag.Bool("processes", true, "report processes (needs root)")
		procRoot        = flag.String("proc.root", "/proc", "location of the proc filesystem")
		useConntrack    = flag.Bool("conntrack", true, "also use conntrack to track connections")
		insecure        = flag.Bool("insecure", false, "(SSL) explicitly allow \"insecure\" SSL connections and transfers")
		logPrefix       = flag.String("log.prefix", "<probe>", "prefix for each log line")
		logLevel        = flag.String("log.level", "info", "logging threshold level: debug|info|warn|error|fatal|panic")

		dockerEnabled  = flag.Bool("docker", false, "collect Docker-related attributes for processes")
		dockerInterval = flag.Duration("docker.interval", 10*time.Second, "how often to update Docker attributes")
		dockerBridge   = flag.String("docker.bridge", "docker0", "the docker bridge name")

		kubernetesEnabled  = flag.Bool("kubernetes", false, "collect kubernetes-related attributes for containers, should only be enabled on the master node")
		kubernetesAPI      = flag.String("kubernetes.api", "", "Address of kubernetes master api")
		kubernetesInterval = flag.Duration("kubernetes.interval", 10*time.Second, "how often to do a full resync of the kubernetes data")

		weaveRouterAddr = flag.String("weave.router.addr", "127.0.0.1:6784", "IP address & port of the Weave router")
		weaveDNSTarget  = flag.String("weave.hostname", fmt.Sprintf("scope.weave.local:%d", xfer.AppPort), "Hostname to lookup in weaveDNS")
	)
	flag.Parse()

	setLogLevel(*logLevel)
	setLogFormatter(*logPrefix)

	// Setup in memory metrics sink
	inm := metrics.NewInmemSink(time.Minute, 2*time.Minute)
	sig := metrics.DefaultInmemSignal(inm)
	defer sig.Stop()
	metrics.NewGlobal(metrics.DefaultConfig("scope-probe"), inm)

	defer log.Info("probe exiting")

	if *spyProcs && os.Getegid() != 0 {
		log.Warn("-process=true, but that requires root to find everything")
	}

	rand.Seed(time.Now().UnixNano())
	probeID := strconv.FormatInt(rand.Int63(), 16)
	var (
		hostName = hostname.Get()
		hostID   = hostName // TODO(pb): we should sanitize the hostname
	)
	log.Infof("probe starting, version %s, ID %s", version, probeID)
	go check()

	if len(flag.Args()) > 0 {
		targets = flag.Args()
	}
	log.Infof("publishing to: %s", strings.Join(targets, ", "))

	probeConfig := appclient.ProbeConfig{
		Token:    *token,
		ProbeID:  probeID,
		Insecure: *insecure,
	}
	clients := appclient.NewMultiAppClient(func(hostname, endpoint string) (appclient.AppClient, error) {
		return appclient.NewAppClient(
			probeConfig, hostname, endpoint,
			xfer.ControlHandlerFunc(controls.HandleControlRequest),
		)
	})
	defer clients.Stop()

	resolver := appclient.NewResolver(targets, net.LookupIP, clients.Set)
	defer resolver.Stop()

	processCache := process.NewCachingWalker(process.NewWalker(*procRoot))
	scanner := procspy.NewConnectionScanner(processCache)

	endpointReporter := endpoint.NewReporter(hostID, hostName, *spyProcs, *useConntrack, scanner)
	defer endpointReporter.Stop()

	p := probe.New(*spyInterval, *publishInterval, clients)
	p.AddTicker(processCache)
	p.AddReporter(
		endpointReporter,
		host.NewReporter(hostID, hostName),
		process.NewReporter(processCache, hostID, process.GetDeltaTotalJiffies),
	)
	p.AddTagger(probe.NewTopologyTagger(), host.NewTagger(hostID, probeID))

	if *dockerEnabled {
		if err := report.AddLocalBridge(*dockerBridge); err != nil {
			log.Errorf("Docker: problem with bridge %s: %v", *dockerBridge, err)
		}
		if registry, err := docker.NewRegistry(*dockerInterval, clients); err == nil {
			defer registry.Stop()
			p.AddTagger(docker.NewTagger(registry, processCache))
			p.AddReporter(docker.NewReporter(registry, hostID, p))
		} else {
			log.Errorf("Docker: failed to start registry: %v", err)
		}
	}

	if *kubernetesEnabled {
		if client, err := kubernetes.NewClient(*kubernetesAPI, *kubernetesInterval); err == nil {
			defer client.Stop()
			p.AddReporter(kubernetes.NewReporter(client))
		} else {
			log.Errorf("Kubernetes: failed to start client: %v", err)
			log.Errorf("Kubernetes: make sure to run Scope inside a POD with a service account or provide a valid kubernetes.api url")
		}
	}

	if *weaveRouterAddr != "" {
		client := weave.NewClient(sanitize.URL("http://", 6784, "")(*weaveRouterAddr))
		weave := overlay.NewWeave(hostID, client)
		defer weave.Stop()
		p.AddTagger(weave)
		p.AddReporter(weave)

		dockerBridgeIP, err := getFirstAddressOf(*dockerBridge)
		if err != nil {
			log.Println("Error getting docker bridge ip:", err)
		} else {
			weaveDNSLookup := appclient.LookupUsing(dockerBridgeIP + ":53")
			weaveResolver := appclient.NewResolver([]string{*weaveDNSTarget}, weaveDNSLookup, clients.Set)
			defer weaveResolver.Stop()
		}
	}

	if *httpListen != "" {
		go func() {
			log.Infof("Profiling data being exported to %s", *httpListen)
			log.Infof("go tool pprof http://%s/debug/pprof/{profile,heap,block}", *httpListen)
			log.Infof("Profiling endpoint %s terminated: %v", *httpListen, http.ListenAndServe(*httpListen, nil))
		}()
	}

	p.Start()
	defer p.Stop()

	common.SignalHandlerLoop()
}
示例#4
0
文件: main.go 项目: hrhelena/scope
func main() {
	var (
		targets            = []string{fmt.Sprintf("localhost:%d", xfer.AppPort), fmt.Sprintf("scope.weave.local:%d", xfer.AppPort)}
		token              = flag.String("token", "default-token", "probe token")
		httpListen         = flag.String("http.listen", "", "listen address for HTTP profiling and instrumentation server")
		publishInterval    = flag.Duration("publish.interval", 3*time.Second, "publish (output) interval")
		spyInterval        = flag.Duration("spy.interval", time.Second, "spy (scan) interval")
		spyProcs           = flag.Bool("processes", true, "report processes (needs root)")
		dockerEnabled      = flag.Bool("docker", false, "collect Docker-related attributes for processes")
		dockerInterval     = flag.Duration("docker.interval", 10*time.Second, "how often to update Docker attributes")
		dockerBridge       = flag.String("docker.bridge", "docker0", "the docker bridge name")
		kubernetesEnabled  = flag.Bool("kubernetes", false, "collect kubernetes-related attributes for containers, should only be enabled on the master node")
		kubernetesAPI      = flag.String("kubernetes.api", "http://localhost:8080", "Address of kubernetes master api")
		kubernetesInterval = flag.Duration("kubernetes.interval", 10*time.Second, "how often to do a full resync of the kubernetes data")
		weaveRouterAddr    = flag.String("weave.router.addr", "", "IP address or FQDN of the Weave router")
		procRoot           = flag.String("proc.root", "/proc", "location of the proc filesystem")
		printVersion       = flag.Bool("version", false, "print version number and exit")
		useConntrack       = flag.Bool("conntrack", true, "also use conntrack to track connections")
		insecure           = flag.Bool("insecure", false, "(SSL) explicitly allow \"insecure\" SSL connections and transfers")
		logPrefix          = flag.String("log.prefix", "<probe>", "prefix for each log line")
	)
	flag.Parse()

	if *printVersion {
		fmt.Println(version)
		return
	}

	// Setup in memory metrics sink
	inm := metrics.NewInmemSink(time.Minute, 2*time.Minute)
	sig := metrics.DefaultInmemSignal(inm)
	defer sig.Stop()
	metrics.NewGlobal(metrics.DefaultConfig("scope-probe"), inm)

	if !strings.HasSuffix(*logPrefix, " ") {
		*logPrefix += " "
	}
	log.SetPrefix(*logPrefix)

	defer log.Print("probe exiting")

	if *spyProcs && os.Getegid() != 0 {
		log.Printf("warning: -process=true, but that requires root to find everything")
	}

	rand.Seed(time.Now().UnixNano())
	probeID := strconv.FormatInt(rand.Int63(), 16)
	var (
		hostName = probe.Hostname()
		hostID   = hostName // TODO(pb): we should sanitize the hostname
	)
	log.Printf("probe starting, version %s, ID %s", version, probeID)

	addrs, err := net.InterfaceAddrs()
	if err != nil {
		log.Fatal(err)
	}
	localNets := report.Networks{}
	for _, addr := range addrs {
		// Not all addrs are IPNets.
		if ipNet, ok := addr.(*net.IPNet); ok {
			localNets = append(localNets, ipNet)
		}
	}

	if len(flag.Args()) > 0 {
		targets = flag.Args()
	}
	log.Printf("publishing to: %s", strings.Join(targets, ", "))

	factory := func(hostname, endpoint string) (string, xfer.Publisher, error) {
		id, publisher, err := xfer.NewHTTPPublisher(hostname, endpoint, *token, probeID, *insecure)
		if err != nil {
			return "", nil, err
		}
		return id, xfer.NewBackgroundPublisher(publisher), nil
	}

	publishers := xfer.NewMultiPublisher(factory)
	defer publishers.Stop()

	clients := xfer.NewMultiAppClient(xfer.ProbeConfig{
		Token:    *token,
		ProbeID:  probeID,
		Insecure: *insecure,
	}, xfer.ControlHandlerFunc(controls.HandleControlRequest), xfer.NewAppClient)
	defer clients.Stop()

	resolver := xfer.NewStaticResolver(targets, publishers.Set, clients.Set)
	defer resolver.Stop()

	endpointReporter := endpoint.NewReporter(hostID, hostName, *spyProcs, *useConntrack)
	defer endpointReporter.Stop()

	processCache := process.NewCachingWalker(process.NewWalker(*procRoot))
	p := probe.New(*spyInterval, *publishInterval, publishers)
	p.AddTicker(processCache)
	p.AddReporter(
		endpointReporter,
		host.NewReporter(hostID, hostName, localNets),
		process.NewReporter(processCache, hostID),
	)
	p.AddTagger(probe.NewTopologyTagger(), host.NewTagger(hostID, probeID))

	if *dockerEnabled {
		if err := report.AddLocalBridge(*dockerBridge); err != nil {
			log.Printf("Docker: problem with bridge %s: %v", *dockerBridge, err)
		}
		if registry, err := docker.NewRegistry(*dockerInterval); err == nil {
			defer registry.Stop()
			p.AddTagger(docker.NewTagger(registry, processCache))
			p.AddReporter(docker.NewReporter(registry, hostID, p))
		} else {
			log.Printf("Docker: failed to start registry: %v", err)
		}
	}

	if *kubernetesEnabled {
		if client, err := kubernetes.NewClient(*kubernetesAPI, *kubernetesInterval); err == nil {
			defer client.Stop()
			p.AddReporter(kubernetes.NewReporter(client))
		} else {
			log.Printf("Kubernetes: failed to start client: %v", err)
		}
	}

	if *weaveRouterAddr != "" {
		weave := overlay.NewWeave(hostID, *weaveRouterAddr)
		defer weave.Stop()
		p.AddTicker(weave)
		p.AddTagger(weave)
		p.AddReporter(weave)
	}

	if *httpListen != "" {
		go func() {
			log.Printf("Profiling data being exported to %s", *httpListen)
			log.Printf("go tool pprof http://%s/debug/pprof/{profile,heap,block}", *httpListen)
			log.Printf("Profiling endpoint %s terminated: %v", *httpListen, http.ListenAndServe(*httpListen, nil))
		}()
	}

	p.Start()
	defer p.Stop()

	log.Printf("%s", <-interrupt())
}
示例#5
0
文件: probe.go 项目: jmartign/scope
// Main runs the probe
func probeMain(flags probeFlags) {
	setLogLevel(flags.logLevel)
	setLogFormatter(flags.logPrefix)

	// Setup in memory metrics sink
	inm := metrics.NewInmemSink(time.Minute, 2*time.Minute)
	sig := metrics.DefaultInmemSignal(inm)
	defer sig.Stop()
	metrics.NewGlobal(metrics.DefaultConfig("scope-probe"), inm)

	defer log.Info("probe exiting")

	if flags.spyProcs && os.Getegid() != 0 {
		log.Warn("--probe.process=true, but that requires root to find everything")
	}

	rand.Seed(time.Now().UnixNano())
	var (
		probeID  = strconv.FormatInt(rand.Int63(), 16)
		hostName = hostname.Get()
		hostID   = hostName // TODO(pb): we should sanitize the hostname
	)
	log.Infof("probe starting, version %s, ID %s", version, probeID)
	log.Infof("command line: %v", os.Args)
	checkpointFlags := map[string]string{}
	if flags.kubernetesEnabled {
		checkpointFlags["kubernetes_enabled"] = "true"
	}
	go check(checkpointFlags)

	var targets = []string{}
	if flags.token != "" {
		// service mode
		if len(flag.Args()) == 0 {
			targets = append(targets, defaultServiceHost)
		}
	} else if !flags.noApp {
		targets = append(targets, fmt.Sprintf("localhost:%d", xfer.AppPort))
	}
	targets = append(targets, flag.Args()...)
	log.Infof("publishing to: %s", strings.Join(targets, ", "))

	probeConfig := appclient.ProbeConfig{
		Token:        flags.token,
		ProbeVersion: version,
		ProbeID:      probeID,
		Insecure:     flags.insecure,
	}
	clients := appclient.NewMultiAppClient(func(hostname, endpoint string) (appclient.AppClient, error) {
		return appclient.NewAppClient(
			probeConfig, hostname, endpoint,
			xfer.ControlHandlerFunc(controls.HandleControlRequest),
		)
	})
	defer clients.Stop()

	dnsLookupFn := net.LookupIP
	if flags.resolver != "" {
		dnsLookupFn = appclient.LookupUsing(flags.resolver)
	}
	resolver := appclient.NewResolver(targets, dnsLookupFn, clients.Set)
	defer resolver.Stop()

	p := probe.New(flags.spyInterval, flags.publishInterval, clients)

	hostReporter := host.NewReporter(hostID, hostName, probeID, version, clients)
	defer hostReporter.Stop()
	p.AddReporter(hostReporter)
	p.AddTagger(probe.NewTopologyTagger(), host.NewTagger(hostID))

	var processCache *process.CachingWalker
	var scanner procspy.ConnectionScanner
	if flags.procEnabled {
		processCache = process.NewCachingWalker(process.NewWalker(flags.procRoot))
		scanner = procspy.NewConnectionScanner(processCache)
		p.AddTicker(processCache)
		p.AddReporter(process.NewReporter(processCache, hostID, process.GetDeltaTotalJiffies))
	}

	endpointReporter := endpoint.NewReporter(hostID, hostName, flags.spyProcs, flags.useConntrack, flags.procEnabled, scanner)
	defer endpointReporter.Stop()
	p.AddReporter(endpointReporter)

	if flags.dockerEnabled {
		// Don't add the bridge in Kubernetes since container IPs are global and
		// shouldn't be scoped
		if !flags.kubernetesEnabled {
			if err := report.AddLocalBridge(flags.dockerBridge); err != nil {
				log.Errorf("Docker: problem with bridge %s: %v", flags.dockerBridge, err)
			}
		}
		if registry, err := docker.NewRegistry(flags.dockerInterval, clients, true, hostID); err == nil {
			defer registry.Stop()
			if flags.procEnabled {
				p.AddTagger(docker.NewTagger(registry, processCache))
			}
			p.AddReporter(docker.NewReporter(registry, hostID, probeID, p))
		} else {
			log.Errorf("Docker: failed to start registry: %v", err)
		}
	}

	if flags.kubernetesEnabled {
		if client, err := kubernetes.NewClient(flags.kubernetesAPI, flags.kubernetesInterval); err == nil {
			defer client.Stop()
			reporter := kubernetes.NewReporter(client, clients, probeID, hostID, p)
			defer reporter.Stop()
			p.AddReporter(reporter)
			p.AddTagger(reporter)
		} else {
			log.Errorf("Kubernetes: failed to start client: %v", err)
			log.Errorf("Kubernetes: make sure to run Scope inside a POD with a service account or provide a valid kubernetes.api url")
		}
	}

	if flags.weaveAddr != "" {
		client := weave.NewClient(sanitize.URL("http://", 6784, "")(flags.weaveAddr))
		weave := overlay.NewWeave(hostID, client)
		defer weave.Stop()
		p.AddTagger(weave)
		p.AddReporter(weave)

		dockerBridgeIP, err := network.GetFirstAddressOf(flags.dockerBridge)
		if err != nil {
			log.Println("Error getting docker bridge ip:", err)
		} else {
			weaveDNSLookup := appclient.LookupUsing(dockerBridgeIP + ":53")
			weaveResolver := appclient.NewResolver([]string{flags.weaveHostname}, weaveDNSLookup, clients.Set)
			defer weaveResolver.Stop()
		}
	}

	pluginRegistry, err := plugins.NewRegistry(
		flags.pluginsRoot,
		pluginAPIVersion,
		map[string]string{
			"probe_id":    probeID,
			"api_version": pluginAPIVersion,
		},
	)
	if err != nil {
		log.Errorf("plugins: problem loading: %v", err)
	} else {
		defer pluginRegistry.Close()
		p.AddReporter(pluginRegistry)
	}

	if flags.httpListen != "" {
		go func() {
			log.Infof("Profiling data being exported to %s", flags.httpListen)
			log.Infof("go tool pprof http://%s/debug/pprof/{profile,heap,block}", flags.httpListen)
			log.Infof("Profiling endpoint %s terminated: %v", flags.httpListen, http.ListenAndServe(flags.httpListen, nil))
		}()
	}

	p.Start()
	defer p.Stop()

	common.SignalHandlerLoop()
}
示例#6
0
文件: main.go 项目: faddat/scope
func main() {
	var (
		targets            = []string{fmt.Sprintf("localhost:%d", xfer.AppPort), fmt.Sprintf("scope.weave.local:%d", xfer.AppPort)}
		token              = flag.String("token", "default-token", "probe token")
		httpListen         = flag.String("http.listen", "", "listen address for HTTP profiling and instrumentation server")
		publishInterval    = flag.Duration("publish.interval", 3*time.Second, "publish (output) interval")
		spyInterval        = flag.Duration("spy.interval", time.Second, "spy (scan) interval")
		prometheusEndpoint = flag.String("prometheus.endpoint", "/metrics", "Prometheus metrics exposition endpoint (requires -http.listen)")
		spyProcs           = flag.Bool("processes", true, "report processes (needs root)")
		dockerEnabled      = flag.Bool("docker", false, "collect Docker-related attributes for processes")
		dockerInterval     = flag.Duration("docker.interval", 10*time.Second, "how often to update Docker attributes")
		dockerBridge       = flag.String("docker.bridge", "docker0", "the docker bridge name")
		kubernetesEnabled  = flag.Bool("kubernetes", false, "collect kubernetes-related attributes for containers, should only be enabled on the master node")
		kubernetesAPI      = flag.String("kubernetes.api", "http://localhost:8080", "Address of kubernetes master api")
		kubernetesInterval = flag.Duration("kubernetes.interval", 10*time.Second, "how often to do a full resync of the kubernetes data")
		weaveRouterAddr    = flag.String("weave.router.addr", "", "IP address or FQDN of the Weave router")
		procRoot           = flag.String("proc.root", "/proc", "location of the proc filesystem")
		printVersion       = flag.Bool("version", false, "print version number and exit")
		useConntrack       = flag.Bool("conntrack", true, "also use conntrack to track connections")
		insecure           = flag.Bool("insecure", false, "(SSL) explicitly allow \"insecure\" SSL connections and transfers")
		logPrefix          = flag.String("log.prefix", "<probe>", "prefix for each log line")
	)
	flag.Parse()

	if *printVersion {
		fmt.Println(version)
		return
	}

	if !strings.HasSuffix(*logPrefix, " ") {
		*logPrefix += " "
	}
	log.SetPrefix(*logPrefix)

	defer log.Print("probe exiting")

	if *spyProcs && os.Getegid() != 0 {
		log.Printf("warning: -process=true, but that requires root to find everything")
	}

	rand.Seed(time.Now().UnixNano())
	probeID := strconv.FormatInt(rand.Int63(), 16)
	var (
		hostName = hostname()
		hostID   = hostName // TODO(pb): we should sanitize the hostname
	)
	log.Printf("probe starting, version %s, ID %s", version, probeID)

	addrs, err := net.InterfaceAddrs()
	if err != nil {
		log.Fatal(err)
	}
	localNets := report.Networks{}
	for _, addr := range addrs {
		// Not all addrs are IPNets.
		if ipNet, ok := addr.(*net.IPNet); ok {
			localNets = append(localNets, ipNet)
		}
	}

	if len(flag.Args()) > 0 {
		targets = flag.Args()
	}
	log.Printf("publishing to: %s", strings.Join(targets, ", "))

	factory := func(hostname, endpoint string) (string, xfer.Publisher, error) {
		id, publisher, err := xfer.NewHTTPPublisher(hostname, endpoint, *token, probeID, *insecure)
		if err != nil {
			return "", nil, err
		}
		return id, xfer.NewBackgroundPublisher(publisher), nil
	}

	publishers := xfer.NewMultiPublisher(factory)
	defer publishers.Stop()

	clients := xfer.NewMultiAppClient(xfer.ProbeConfig{
		Token:    *token,
		ProbeID:  probeID,
		Insecure: *insecure,
	}, xfer.ControlHandlerFunc(controls.HandleControlRequest), xfer.NewAppClient)
	defer clients.Stop()

	resolver := newStaticResolver(targets, publishers.Set, clients.Set)
	defer resolver.Stop()

	endpointReporter := endpoint.NewReporter(hostID, hostName, *spyProcs, *useConntrack)
	defer endpointReporter.Stop()

	processCache := process.NewCachingWalker(process.NewWalker(*procRoot))

	var (
		tickers   = []Ticker{processCache}
		reporters = []Reporter{endpointReporter, host.NewReporter(hostID, hostName, localNets), process.NewReporter(processCache, hostID)}
		taggers   = []Tagger{newTopologyTagger(), host.NewTagger(hostID, probeID)}
	)

	dockerTagger, dockerReporter, dockerRegistry := func() (*docker.Tagger, *docker.Reporter, docker.Registry) {
		if !*dockerEnabled {
			return nil, nil, nil
		}
		if err := report.AddLocalBridge(*dockerBridge); err != nil {
			log.Printf("Docker: problem with bridge %s: %v", *dockerBridge, err)
			return nil, nil, nil
		}
		registry, err := docker.NewRegistry(*dockerInterval)
		if err != nil {
			log.Printf("Docker: failed to start registry: %v", err)
			return nil, nil, nil
		}
		return docker.NewTagger(registry, processCache), docker.NewReporter(registry, hostID), registry
	}()
	if dockerTagger != nil {
		taggers = append(taggers, dockerTagger)
	}
	if dockerReporter != nil {
		reporters = append(reporters, dockerReporter)
	}
	if dockerRegistry != nil {
		defer dockerRegistry.Stop()
	}

	if *kubernetesEnabled {
		if client, err := kubernetes.NewClient(*kubernetesAPI, *kubernetesInterval); err == nil {
			defer client.Stop()
			reporters = append(reporters, kubernetes.NewReporter(client))
		} else {
			log.Printf("Kubernetes: failed to start client: %v", err)
		}
	}

	if *weaveRouterAddr != "" {
		weave := overlay.NewWeave(hostID, *weaveRouterAddr)
		tickers = append(tickers, weave)
		taggers = append(taggers, weave)
		reporters = append(reporters, weave)
	}

	if *httpListen != "" {
		go func() {
			log.Printf("Profiling data being exported to %s", *httpListen)
			log.Printf("go tool pprof http://%s/debug/pprof/{profile,heap,block}", *httpListen)
			if *prometheusEndpoint != "" {
				log.Printf("exposing Prometheus endpoint at %s%s", *httpListen, *prometheusEndpoint)
				http.Handle(*prometheusEndpoint, makePrometheusHandler())
			}
			log.Printf("Profiling endpoint %s terminated: %v", *httpListen, http.ListenAndServe(*httpListen, nil))
		}()
	}

	quit, done := make(chan struct{}), sync.WaitGroup{}
	done.Add(2)
	defer func() { done.Wait() }() // second, wait for the main loops to be killed
	defer close(quit)              // first, kill the main loops

	var rpt syncReport
	rpt.swap(report.MakeReport())

	go func() {
		defer done.Done()
		spyTick := time.Tick(*spyInterval)

		for {
			select {
			case <-spyTick:
				start := time.Now()
				for _, ticker := range tickers {
					if err := ticker.Tick(); err != nil {
						log.Printf("error doing ticker: %v", err)
					}
				}

				localReport := rpt.copy()
				localReport = localReport.Merge(doReport(reporters))
				localReport = Apply(localReport, taggers)
				rpt.swap(localReport)

				if took := time.Since(start); took > *spyInterval {
					log.Printf("report generation took too long (%s)", took)
				}

			case <-quit:
				return
			}
		}
	}()

	go func() {
		defer done.Done()
		var (
			pubTick = time.Tick(*publishInterval)
			p       = xfer.NewReportPublisher(publishers)
		)

		for {
			select {
			case <-pubTick:
				publishTicks.WithLabelValues().Add(1)
				localReport := rpt.swap(report.MakeReport())
				localReport.Window = *publishInterval
				if err := p.Publish(localReport); err != nil {
					log.Printf("publish: %v", err)
				}

			case <-quit:
				return
			}
		}
	}()

	log.Printf("%s", <-interrupt())
}