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Exposing pprof and expvars interfaces on default containerd socket

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Signed-off-by: Kunal Kushwaha <kushwaha_kunal_v7@lab.ntt.co.jp>
This commit is contained in:
Kunal Kushwaha 2017-01-30 15:00:57 +09:00
parent 78b55a1301
commit 6af4f5fee8
1 changed files with 28 additions and 0 deletions
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28
cmd/containerd/main.go
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@ -1,9 +1,11 @@
package main
import (
_ "expvar"
"fmt"
"net"
"net/http"
_ "net/http/pprof"
"net/url"
"os"
"os/signal"
@ -66,6 +68,11 @@ func main() {
Usage: "socket path for containerd's GRPC server",
Value: "/run/containerd/containerd.sock",
},
cli.StringFlag{
Name: "debug-socket, d",
Usage: "socket path for containerd's debug server",
Value: "/run/containerd/containerd-debug.sock",
},
cli.StringFlag{
Name: "metrics-address, m",
Usage: "tcp address to serve metrics on",
@ -101,6 +108,21 @@ func main() {
}
defer s.Shutdown()
debugPath := context.GlobalString("debug-socket")
if debugPath == "" {
return fmt.Errorf("--debug-socket path cannot be empty")
}
d, err := utils.CreateUnixSocket(debugPath)
if err != nil {
return err
}
//publish profiling and debug socket.
log.G(ctx).WithField("socket", debugPath).Info("starting profiler handlers")
log.G(ctx).WithFields(logrus.Fields{"expvars": "/debug/vars", "socket": debugPath}).Debug("serving expvars requests")
log.G(ctx).WithFields(logrus.Fields{"pprof": "/debug/pprof", "socket": debugPath}).Debug("serving pprof requests")
go serveProfiler(ctx, d)
path := context.GlobalString("socket")
if path == "" {
return fmt.Errorf("--socket path cannot be empty")
@ -194,6 +216,12 @@ func serveGRPC(ctx gocontext.Context, server *grpc.Server, l net.Listener) {
}
}
func serveProfiler(ctx gocontext.Context, l net.Listener) {
if err := http.Serve(l, nil); err != nil {
log.G(ctx).WithError(err).Fatal("profiler server failure")
}
}
// DumpStacks dumps the runtime stack.
func dumpStacks(ctx gocontext.Context) {
var (