etcdserver: add leaseExpired debugging metrics

Fix #8050. Signed-off-by: Gyu-Ho Lee <[email protected]>
etcd-io · Jun 8, 2017 · 12bc2bb · 12bc2bb
1 parent 3a43afc
commit 12bc2bb
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diff --git a/etcdserver/metrics.go b/etcdserver/metrics.go
@@ -58,6 +58,12 @@ var (
 		Name:      "proposals_failed_total",
 		Help:      "The total number of failed proposals seen.",
 	})
+	leaseExpired = prometheus.NewCounter(prometheus.CounterOpts{
+		Namespace: "etcd_debugging",
+		Subsystem: "server",
+		Name:      "lease_expired_total",
+		Help:      "The total number of expired leases.",
+	})
 )
 
 func init() {
@@ -67,6 +73,7 @@ func init() {
 	prometheus.MustRegister(proposalsApplied)
 	prometheus.MustRegister(proposalsPending)
 	prometheus.MustRegister(proposalsFailed)
+	prometheus.MustRegister(leaseExpired)
 }
 
 func monitorFileDescriptor(done <-chan struct{}) {

diff --git a/etcdserver/server.go b/etcdserver/server.go
@@ -739,6 +739,7 @@ func (s *EtcdServer) run() {
 					lid := lease.ID
 					s.goAttach(func() {
 						s.LeaseRevoke(s.ctx, &pb.LeaseRevokeRequest{ID: int64(lid)})
+						leaseExpired.Inc()
 						<-c
 					})
 				}