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))
}
}
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)
}
}
}
}
// 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()
}
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())
}
// 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()
}
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())
}
