Add metrics for conntrack and ebpf errors

probe/endpoint/conntrack.go

@@ -9,6 +9,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/armon/go-metrics"
 	log "github.com/sirupsen/logrus"
 	"github.com/typetypetype/conntrack"
 )
@@ -148,6 +149,7 @@ func (c *conntrackWalker) run() {
 				return
 			}
 			if f.Err != nil {
+				metrics.IncrCounter([]string{"conntrack", "errors"}, 1)
 				log.Errorf("conntrack event error: %v", f.Err)
 				stop()
 				return

probe/endpoint/ebpf.go

@@ -13,6 +13,7 @@ import (
 	"sync"
 	"syscall"
 
+	"github.com/armon/go-metrics"
 	log "github.com/sirupsen/logrus"
 	"github.com/weaveworks/common/fs"
 	"github.com/weaveworks/scope/probe/endpoint/procspy"
@@ -159,6 +160,9 @@ func (t *EbpfTracker) TCPEventV4(e tracer.TcpV4) {
 		// https://github.com/weaveworks/scope/issues/2334
 		log.Errorf("tcp tracer received event with timestamp %v even though the last timestamp was %v. Stopping the eBPF tracker.", e.Timestamp, t.lastTimestampV4)
 		t.stop()
+		metrics.IncrCounterWithLabels([]string{"ebpf", "errors"}, 1, []metrics.Label{
+			{Name: "kind", Value: "timestamp-out-of-order"},
+		})
 		return
 	}
 
@@ -181,6 +185,9 @@ func (t *EbpfTracker) TCPEventV6(e tracer.TcpV6) {
 // LostV4 handles IPv4 TCP event misses from the eBPF tracer.
 func (t *EbpfTracker) LostV4(count uint64) {
 	log.Errorf("tcp tracer lost %d events. Stopping the eBPF tracker", count)
+	metrics.IncrCounterWithLabels([]string{"ebpf", "errors"}, 1, []metrics.Label{
+		{Name: "kind", Value: "lost-events"},
+	})
 	t.stop()
 }