mirror of https://github.com/linkerd/linkerd2.git
84 lines
2.2 KiB
Go
84 lines
2.2 KiB
Go
package tap
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import (
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"context"
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"flag"
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"os"
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"os/signal"
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"syscall"
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"github.com/linkerd/linkerd2/controller/k8s"
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"github.com/linkerd/linkerd2/controller/tap"
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"github.com/linkerd/linkerd2/pkg/admin"
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"github.com/linkerd/linkerd2/pkg/flags"
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"github.com/linkerd/linkerd2/pkg/trace"
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log "github.com/sirupsen/logrus"
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)
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const defaultDomain = "cluster.local"
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// Main executes the tap subcommand
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func Main(args []string) {
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cmd := flag.NewFlagSet("tap", flag.ExitOnError)
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apiServerAddr := cmd.String("apiserver-addr", ":8089", "address to serve the apiserver on")
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metricsAddr := cmd.String("metrics-addr", ":9998", "address to serve scrapable metrics on")
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kubeConfigPath := cmd.String("kubeconfig", "", "path to kube config")
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controllerNamespace := cmd.String("controller-namespace", "linkerd", "namespace in which Linkerd is installed")
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tapPort := cmd.Uint("tap-port", 4190, "proxy tap port to connect to")
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disableCommonNames := cmd.Bool("disable-common-names", false, "disable checks for Common Names (for development)")
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trustDomain := cmd.String("identity-trust-domain", defaultDomain, "configures the name suffix used for identities")
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traceCollector := flags.AddTraceFlags(cmd)
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flags.ConfigureAndParse(cmd, args)
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ctx := context.Background()
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stop := make(chan os.Signal, 1)
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signal.Notify(stop, os.Interrupt, syscall.SIGTERM)
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k8sAPI, err := k8s.InitializeAPI(
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ctx,
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*kubeConfigPath,
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true,
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k8s.CJ,
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k8s.DS,
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k8s.SS,
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k8s.Deploy,
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k8s.Job,
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k8s.NS,
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k8s.Pod,
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k8s.RC,
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k8s.Svc,
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k8s.RS,
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k8s.Node,
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)
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if err != nil {
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log.Fatalf("Failed to initialize K8s API: %s", err)
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}
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log.Infof("Using trust domain: %s", *trustDomain)
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if *traceCollector != "" {
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if err := trace.InitializeTracing("linkerd-tap", *traceCollector); err != nil {
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log.Warnf("failed to initialize tracing: %s", err)
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}
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}
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grpcTapServer := tap.NewGrpcTapServer(*tapPort, *controllerNamespace, *trustDomain, k8sAPI)
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apiServer, err := tap.NewAPIServer(ctx, *apiServerAddr, k8sAPI, grpcTapServer, *disableCommonNames)
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if err != nil {
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log.Fatal(err.Error())
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}
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k8sAPI.Sync(nil) // blocks until caches are synced
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go apiServer.Start(ctx)
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go admin.StartServer(*metricsAddr)
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<-stop
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log.Infof("shutting down APIServer on %s", *apiServerAddr)
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apiServer.Shutdown(ctx)
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}
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