mirror of
https://github.com/etcd-io/etcd.git
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ea1d0f3e0d
The _total suffix is by convention for counters, don't use it on a gauge. Clarify help string. Tweak metric name so it'll sort with related metrics, and be a little more understandable. Remove open file descriptor metric, as Prometheus client_golang provides that out of the box as process_open_fds which is also more up to date. Both only support Linux, so there's no loss of platform support. Fixes #5229
79 lines
2.2 KiB
Go
79 lines
2.2 KiB
Go
// Copyright 2015 CoreOS, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package etcdserver
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import (
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"time"
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"github.com/coreos/etcd/pkg/runtime"
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"github.com/prometheus/client_golang/prometheus"
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)
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var (
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// TODO: with label in v3?
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proposeDurations = prometheus.NewHistogram(prometheus.HistogramOpts{
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Namespace: "etcd_debugging",
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Subsystem: "server",
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Name: "proposal_durations_seconds",
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Help: "The latency distributions of committing proposal.",
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Buckets: prometheus.ExponentialBuckets(0.001, 2, 14),
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})
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proposePending = prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "etcd_debugging",
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Subsystem: "server",
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Name: "proposals_pending",
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Help: "The current number of pending proposals.",
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})
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// This is number of proposal failed in client's view.
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// The proposal might be later got committed in raft.
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proposeFailed = prometheus.NewCounter(prometheus.CounterOpts{
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Namespace: "etcd_debugging",
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Subsystem: "server",
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Name: "proposal_failed_total",
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Help: "The total number of failed proposals.",
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})
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)
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func init() {
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prometheus.MustRegister(proposeDurations)
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prometheus.MustRegister(proposePending)
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prometheus.MustRegister(proposeFailed)
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}
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func monitorFileDescriptor(done <-chan struct{}) {
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ticker := time.NewTicker(5 * time.Second)
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defer ticker.Stop()
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for {
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used, err := runtime.FDUsage()
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if err != nil {
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plog.Errorf("cannot monitor file descriptor usage (%v)", err)
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return
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}
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limit, err := runtime.FDLimit()
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if err != nil {
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plog.Errorf("cannot monitor file descriptor usage (%v)", err)
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return
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}
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if used >= limit/5*4 {
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plog.Warningf("80%% of the file descriptor limit is used [used = %d, limit = %d]", used, limit)
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}
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select {
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case <-ticker.C:
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case <-done:
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return
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}
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}
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}
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