mirror of
https://github.com/minio/minio.git
synced 2025-11-04 10:11:09 +01:00
771 lines
23 KiB
Go
771 lines
23 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"math"
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"net/http"
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"strings"
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"sync/atomic"
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"time"
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"github.com/minio/minio/internal/logger"
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iampolicy "github.com/minio/pkg/iam/policy"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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)
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var (
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httpRequestsDuration = prometheus.NewHistogramVec(
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prometheus.HistogramOpts{
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Name: "s3_ttfb_seconds",
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Help: "Time taken by requests served by current MinIO server instance",
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Buckets: []float64{.05, .1, .25, .5, 1, 2.5, 5, 10},
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},
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[]string{"api"},
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)
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minioVersionInfo = prometheus.NewGaugeVec(
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prometheus.GaugeOpts{
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Namespace: "minio",
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Name: "version_info",
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Help: "Version of current MinIO server instance",
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},
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[]string{
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// current version
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"version",
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// commit-id of the current version
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"commit",
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},
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)
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)
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const (
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healMetricsNamespace = "self_heal"
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gatewayNamespace = "gateway"
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cacheNamespace = "cache"
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s3Namespace = "s3"
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bucketNamespace = "bucket"
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minioNamespace = "minio"
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diskNamespace = "disk"
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interNodeNamespace = "internode"
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)
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func init() {
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prometheus.MustRegister(httpRequestsDuration)
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prometheus.MustRegister(newMinioCollector())
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prometheus.MustRegister(minioVersionInfo)
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}
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// newMinioCollector describes the collector
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// and returns reference of minioCollector
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// It creates the Prometheus Description which is used
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// to define metric and help string
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func newMinioCollector() *minioCollector {
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return &minioCollector{
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desc: prometheus.NewDesc("minio_stats", "Statistics exposed by MinIO server", nil, nil),
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}
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}
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// minioCollector is the Custom Collector
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type minioCollector struct {
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desc *prometheus.Desc
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}
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// Describe sends the super-set of all possible descriptors of metrics
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func (c *minioCollector) Describe(ch chan<- *prometheus.Desc) {
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ch <- c.desc
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}
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// Collect is called by the Prometheus registry when collecting metrics.
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func (c *minioCollector) Collect(ch chan<- prometheus.Metric) {
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// Expose MinIO's version information
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minioVersionInfo.WithLabelValues(Version, CommitID).Set(1.0)
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storageMetricsPrometheus(ch)
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nodeHealthMetricsPrometheus(ch)
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bucketUsageMetricsPrometheus(ch)
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networkMetricsPrometheus(ch)
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httpMetricsPrometheus(ch)
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cacheMetricsPrometheus(ch)
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gatewayMetricsPrometheus(ch)
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healingMetricsPrometheus(ch)
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}
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func nodeHealthMetricsPrometheus(ch chan<- prometheus.Metric) {
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nodesUp, nodesDown := GetPeerOnlineCount()
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(minioNamespace, "nodes", "online"),
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"Total number of MinIO nodes online",
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nil, nil),
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prometheus.GaugeValue,
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float64(nodesUp),
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)
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(minioNamespace, "nodes", "offline"),
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"Total number of MinIO nodes offline",
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nil, nil),
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prometheus.GaugeValue,
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float64(nodesDown),
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)
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}
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// collects healing specific metrics for MinIO instance in Prometheus specific format
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// and sends to given channel
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func healingMetricsPrometheus(ch chan<- prometheus.Metric) {
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if !globalIsErasure {
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return
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}
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bgSeq, exists := globalBackgroundHealState.getHealSequenceByToken(bgHealingUUID)
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if !exists {
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return
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}
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var dur time.Duration
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if !bgSeq.lastHealActivity.IsZero() {
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dur = time.Since(bgSeq.lastHealActivity)
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}
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(healMetricsNamespace, "time", "since_last_activity"),
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"Time elapsed (in nano seconds) since last self healing activity. This is set to -1 until initial self heal activity",
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nil, nil),
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prometheus.GaugeValue,
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float64(dur),
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)
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for k, v := range bgSeq.getScannedItemsMap() {
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(healMetricsNamespace, "objects", "scanned"),
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"Objects scanned in current self healing run",
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[]string{"type"}, nil),
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prometheus.GaugeValue,
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float64(v), string(k),
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)
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}
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for k, v := range bgSeq.getHealedItemsMap() {
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(healMetricsNamespace, "objects", "healed"),
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"Objects healed in current self healing run",
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[]string{"type"}, nil),
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prometheus.GaugeValue,
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float64(v), string(k),
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)
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}
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for k, v := range bgSeq.gethealFailedItemsMap() {
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// healFailedItemsMap stores the endpoint and volume state separated by comma,
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// split the fields and pass to channel at correct index
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s := strings.Split(k, ",")
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(healMetricsNamespace, "objects", "heal_failed"),
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"Objects for which healing failed in current self healing run",
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[]string{"mount_path", "volume_status"}, nil),
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prometheus.GaugeValue,
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float64(v), s[0], s[1],
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)
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}
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}
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// collects gateway specific metrics for MinIO instance in Prometheus specific format
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// and sends to given channel
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func gatewayMetricsPrometheus(ch chan<- prometheus.Metric) {
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if !globalIsGateway || (globalGatewayName != S3BackendGateway && globalGatewayName != AzureBackendGateway && globalGatewayName != GCSBackendGateway) {
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return
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}
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objLayer := newObjectLayerFn()
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// Service not initialized yet
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if objLayer == nil {
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return
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}
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m, err := objLayer.GetMetrics(GlobalContext)
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if err != nil {
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return
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}
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(gatewayNamespace, globalGatewayName, "bytes_received"),
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"Total number of bytes received by current MinIO Gateway "+globalGatewayName+" backend",
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nil, nil),
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prometheus.CounterValue,
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float64(m.GetBytesReceived()),
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)
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(gatewayNamespace, globalGatewayName, "bytes_sent"),
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"Total number of bytes sent by current MinIO Gateway to "+globalGatewayName+" backend",
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nil, nil),
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prometheus.CounterValue,
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float64(m.GetBytesSent()),
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)
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s := m.GetRequests()
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(gatewayNamespace, globalGatewayName, "requests"),
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"Total number of requests made to "+globalGatewayName+" by current MinIO Gateway",
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[]string{"method"}, nil),
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prometheus.CounterValue,
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float64(atomic.LoadUint64(&s.Get)),
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http.MethodGet,
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)
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(gatewayNamespace, globalGatewayName, "requests"),
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"Total number of requests made to "+globalGatewayName+" by current MinIO Gateway",
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[]string{"method"}, nil),
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prometheus.CounterValue,
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float64(atomic.LoadUint64(&s.Head)),
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http.MethodHead,
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)
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(gatewayNamespace, globalGatewayName, "requests"),
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"Total number of requests made to "+globalGatewayName+" by current MinIO Gateway",
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[]string{"method"}, nil),
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prometheus.CounterValue,
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float64(atomic.LoadUint64(&s.Put)),
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http.MethodPut,
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)
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(gatewayNamespace, globalGatewayName, "requests"),
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"Total number of requests made to "+globalGatewayName+" by current MinIO Gateway",
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[]string{"method"}, nil),
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prometheus.CounterValue,
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float64(atomic.LoadUint64(&s.Post)),
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http.MethodPost,
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)
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}
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// collects cache metrics for MinIO server in Prometheus specific format
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// and sends to given channel
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func cacheMetricsPrometheus(ch chan<- prometheus.Metric) {
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cacheObjLayer := newCachedObjectLayerFn()
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// Service not initialized yet
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if cacheObjLayer == nil {
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return
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}
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(cacheNamespace, "hits", "total"),
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"Total number of disk cache hits in current MinIO instance",
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nil, nil),
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prometheus.CounterValue,
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float64(cacheObjLayer.CacheStats().getHits()),
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)
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(cacheNamespace, "misses", "total"),
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"Total number of disk cache misses in current MinIO instance",
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nil, nil),
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prometheus.CounterValue,
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float64(cacheObjLayer.CacheStats().getMisses()),
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)
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(cacheNamespace, "data", "served"),
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"Total number of bytes served from cache of current MinIO instance",
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nil, nil),
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prometheus.CounterValue,
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float64(cacheObjLayer.CacheStats().getBytesServed()),
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)
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for _, cdStats := range cacheObjLayer.CacheStats().GetDiskStats() {
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// Cache disk usage percentage
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(cacheNamespace, "usage", "percent"),
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"Total percentage cache usage",
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[]string{"disk"}, nil),
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prometheus.GaugeValue,
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float64(cdStats.UsagePercent),
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cdStats.Dir,
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)
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(cacheNamespace, "usage", "high"),
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"Indicates cache usage is high or low, relative to current cache 'quota' settings",
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[]string{"disk"}, nil),
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prometheus.GaugeValue,
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float64(cdStats.UsageState),
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cdStats.Dir,
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)
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName("cache", "usage", "size"),
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"Indicates current cache usage in bytes",
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[]string{"disk"}, nil),
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prometheus.GaugeValue,
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float64(cdStats.UsageSize),
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cdStats.Dir,
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)
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName("cache", "total", "size"),
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"Indicates total size of cache disk",
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[]string{"disk"}, nil),
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prometheus.GaugeValue,
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float64(cdStats.TotalCapacity),
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cdStats.Dir,
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)
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}
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}
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// collects http metrics for MinIO server in Prometheus specific format
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// and sends to given channel
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func httpMetricsPrometheus(ch chan<- prometheus.Metric) {
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httpStats := globalHTTPStats.toServerHTTPStats()
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for api, value := range httpStats.CurrentS3Requests.APIStats {
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(s3Namespace, "requests", "current"),
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"Total number of running s3 requests in current MinIO server instance",
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[]string{"api"}, nil),
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prometheus.CounterValue,
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float64(value),
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api,
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)
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}
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for api, value := range httpStats.TotalS3Requests.APIStats {
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(s3Namespace, "requests", "total"),
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"Total number of s3 requests in current MinIO server instance",
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[]string{"api"}, nil),
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prometheus.CounterValue,
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float64(value),
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api,
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)
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}
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for api, value := range httpStats.TotalS3Errors.APIStats {
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(s3Namespace, "errors", "total"),
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"Total number of s3 errors in current MinIO server instance",
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[]string{"api"}, nil),
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prometheus.CounterValue,
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float64(value),
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api,
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)
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}
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for api, value := range httpStats.TotalS3Canceled.APIStats {
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(s3Namespace, "canceled", "total"),
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"Total number of client canceled s3 request in current MinIO server instance",
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[]string{"api"}, nil),
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prometheus.CounterValue,
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float64(value),
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api,
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)
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}
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}
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// collects network metrics for MinIO server in Prometheus specific format
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// and sends to given channel
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func networkMetricsPrometheus(ch chan<- prometheus.Metric) {
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connStats := globalConnStats.toServerConnStats()
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// Network Sent/Received Bytes (internode)
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(interNodeNamespace, "tx", "bytes_total"),
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"Total number of bytes sent to the other peer nodes by current MinIO server instance",
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nil, nil),
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prometheus.CounterValue,
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float64(connStats.TotalOutputBytes),
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)
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(interNodeNamespace, "rx", "bytes_total"),
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"Total number of internode bytes received by current MinIO server instance",
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nil, nil),
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prometheus.CounterValue,
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float64(connStats.TotalInputBytes),
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)
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// Network Sent/Received Bytes (Outbound)
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(s3Namespace, "tx", "bytes_total"),
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"Total number of s3 bytes sent by current MinIO server instance",
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nil, nil),
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prometheus.CounterValue,
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float64(connStats.S3OutputBytes),
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)
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ch <- prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(s3Namespace, "rx", "bytes_total"),
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"Total number of s3 bytes received by current MinIO server instance",
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nil, nil),
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prometheus.CounterValue,
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float64(connStats.S3InputBytes),
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)
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}
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// get the most current of in-memory replication stats and data usage info from crawler.
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func getLatestReplicationStats(bucket string, u BucketUsageInfo) (s BucketReplicationStats) {
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bucketStats := globalNotificationSys.GetClusterBucketStats(GlobalContext, bucket)
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// accumulate cluster bucket stats
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stats := make(map[string]*BucketReplicationStat)
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var totReplicaSize int64
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for _, bucketStat := range bucketStats {
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totReplicaSize += bucketStat.ReplicationStats.ReplicaSize
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for arn, stat := range bucketStat.ReplicationStats.Stats {
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oldst, ok := stats[arn]
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if !ok {
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oldst = &BucketReplicationStat{}
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}
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stats[arn] = &BucketReplicationStat{
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FailedCount: stat.FailedCount + oldst.FailedCount,
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FailedSize: stat.FailedSize + oldst.FailedSize,
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ReplicatedSize: stat.ReplicatedSize + oldst.ReplicatedSize,
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}
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}
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}
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// add initial usage stat to cluster stats
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usageStat := globalReplicationStats.GetInitialUsage(bucket)
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if usageStat.Stats != nil {
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totReplicaSize += usageStat.ReplicaSize
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for arn, stat := range usageStat.Stats {
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st, ok := stats[arn]
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if !ok {
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st = &BucketReplicationStat{
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ReplicatedSize: stat.ReplicatedSize,
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FailedSize: stat.FailedSize,
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FailedCount: stat.FailedCount,
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}
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} else {
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st.ReplicatedSize += stat.ReplicatedSize
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st.FailedSize += stat.FailedSize
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st.FailedCount += stat.FailedCount
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}
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stats[arn] = st
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}
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}
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s = BucketReplicationStats{
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Stats: make(map[string]*BucketReplicationStat, len(stats)),
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}
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var latestTotReplicatedSize int64
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for _, st := range u.ReplicationInfo {
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latestTotReplicatedSize += int64(st.ReplicatedSize)
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}
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// normalize computed real time stats with latest usage stat
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for arn, tgtstat := range stats {
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st := BucketReplicationStat{}
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bu, ok := usageStat.Stats[arn]
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if !ok {
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bu = &BucketReplicationStat{}
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}
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// use in memory replication stats if it is ahead of usage info.
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st.ReplicatedSize = bu.ReplicatedSize
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if tgtstat.ReplicatedSize >= bu.ReplicatedSize {
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st.ReplicatedSize = tgtstat.ReplicatedSize
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}
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s.ReplicatedSize += st.ReplicatedSize
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// Reset FailedSize and FailedCount to 0 for negative overflows which can
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// happen since data usage picture can lag behind actual usage state at the time of cluster start
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st.FailedSize = int64(math.Max(float64(tgtstat.FailedSize), 0))
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st.FailedCount = int64(math.Max(float64(tgtstat.FailedCount), 0))
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s.Stats[arn] = &st
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s.FailedSize += st.FailedSize
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s.FailedCount += st.FailedCount
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}
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// normalize overall stats
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s.ReplicaSize = int64(math.Max(float64(totReplicaSize), float64(u.ReplicaSize)))
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s.ReplicatedSize = int64(math.Max(float64(s.ReplicatedSize), float64(latestTotReplicatedSize)))
|
|
return s
|
|
}
|
|
|
|
// Populates prometheus with bucket usage metrics, this metrics
|
|
// is only enabled if scanner is enabled.
|
|
func bucketUsageMetricsPrometheus(ch chan<- prometheus.Metric) {
|
|
objLayer := newObjectLayerFn()
|
|
// Service not initialized yet
|
|
if objLayer == nil {
|
|
return
|
|
}
|
|
|
|
if globalIsGateway {
|
|
return
|
|
}
|
|
|
|
dataUsageInfo, err := loadDataUsageFromBackend(GlobalContext, objLayer)
|
|
if err != nil {
|
|
return
|
|
}
|
|
// data usage has not captured any data yet.
|
|
if dataUsageInfo.LastUpdate.IsZero() {
|
|
return
|
|
}
|
|
|
|
for bucket, usageInfo := range dataUsageInfo.BucketsUsage {
|
|
stat := getLatestReplicationStats(bucket, usageInfo)
|
|
// Total space used by bucket
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(bucketNamespace, "usage", "size"),
|
|
"Total bucket size",
|
|
[]string{"bucket"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(usageInfo.Size),
|
|
bucket,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(bucketNamespace, "objects", "count"),
|
|
"Total number of objects in a bucket",
|
|
[]string{"bucket"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(usageInfo.ObjectsCount),
|
|
bucket,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName("bucket", "replication", "failed_size"),
|
|
"Total capacity failed to replicate at least once",
|
|
[]string{"bucket"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(stat.FailedSize),
|
|
bucket,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName("bucket", "replication", "successful_size"),
|
|
"Total capacity replicated to destination",
|
|
[]string{"bucket"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(stat.ReplicatedSize),
|
|
bucket,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName("bucket", "replication", "received_size"),
|
|
"Total capacity replicated to this instance",
|
|
[]string{"bucket"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(stat.ReplicaSize),
|
|
bucket,
|
|
)
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName("bucket", "replication", "failed_count"),
|
|
"Total replication operations failed",
|
|
[]string{"bucket"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(stat.FailedCount),
|
|
bucket,
|
|
)
|
|
for k, v := range usageInfo.ObjectSizesHistogram {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(bucketNamespace, "objects", "histogram"),
|
|
"Total number of objects of different sizes in a bucket",
|
|
[]string{"bucket", "object_size"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(v),
|
|
bucket,
|
|
k,
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
// collects storage metrics for MinIO server in Prometheus specific format
|
|
// and sends to given channel
|
|
func storageMetricsPrometheus(ch chan<- prometheus.Metric) {
|
|
objLayer := newObjectLayerFn()
|
|
// Service not initialized yet
|
|
if objLayer == nil {
|
|
return
|
|
}
|
|
|
|
if globalIsGateway {
|
|
return
|
|
}
|
|
|
|
server := getLocalServerProperty(globalEndpoints, &http.Request{
|
|
Host: globalLocalNodeName,
|
|
})
|
|
|
|
onlineDisks, offlineDisks := getOnlineOfflineDisksStats(server.Disks)
|
|
totalDisks := offlineDisks.Merge(onlineDisks)
|
|
|
|
// Report total capacity
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(minioNamespace, "capacity_raw", "total"),
|
|
"Total capacity online in the cluster",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
float64(GetTotalCapacity(server.Disks)),
|
|
)
|
|
|
|
// Report total capacity free
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(minioNamespace, "capacity_raw_free", "total"),
|
|
"Total free capacity online in the cluster",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
float64(GetTotalCapacityFree(server.Disks)),
|
|
)
|
|
|
|
s, _ := objLayer.StorageInfo(GlobalContext)
|
|
// Report total usable capacity
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(minioNamespace, "capacity_usable", "total"),
|
|
"Total usable capacity online in the cluster",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
GetTotalUsableCapacity(server.Disks, s),
|
|
)
|
|
// Report total usable capacity free
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(minioNamespace, "capacity_usable_free", "total"),
|
|
"Total free usable capacity online in the cluster",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
GetTotalUsableCapacityFree(server.Disks, s),
|
|
)
|
|
|
|
// MinIO Offline Disks per node
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(minioNamespace, "disks", "offline"),
|
|
"Total number of offline disks in current MinIO server instance",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
float64(offlineDisks.Sum()),
|
|
)
|
|
|
|
// MinIO Total Disks per node
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(minioNamespace, "disks", "total"),
|
|
"Total number of disks for current MinIO server instance",
|
|
nil, nil),
|
|
prometheus.GaugeValue,
|
|
float64(totalDisks.Sum()),
|
|
)
|
|
|
|
for _, disk := range server.Disks {
|
|
// Total disk usage by the disk
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(diskNamespace, "storage", "used"),
|
|
"Total disk storage used on the disk",
|
|
[]string{"disk"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(disk.UsedSpace),
|
|
disk.DrivePath,
|
|
)
|
|
|
|
// Total available space in the disk
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(diskNamespace, "storage", "available"),
|
|
"Total available space left on the disk",
|
|
[]string{"disk"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(disk.AvailableSpace),
|
|
disk.DrivePath,
|
|
)
|
|
|
|
// Total storage space of the disk
|
|
ch <- prometheus.MustNewConstMetric(
|
|
prometheus.NewDesc(
|
|
prometheus.BuildFQName(diskNamespace, "storage", "total"),
|
|
"Total space on the disk",
|
|
[]string{"disk"}, nil),
|
|
prometheus.GaugeValue,
|
|
float64(disk.TotalSpace),
|
|
disk.DrivePath,
|
|
)
|
|
}
|
|
}
|
|
|
|
func metricsHandler() http.Handler {
|
|
|
|
registry := prometheus.NewRegistry()
|
|
|
|
err := registry.Register(minioVersionInfo)
|
|
logger.LogIf(GlobalContext, err)
|
|
|
|
err = registry.Register(httpRequestsDuration)
|
|
logger.LogIf(GlobalContext, err)
|
|
|
|
err = registry.Register(newMinioCollector())
|
|
logger.LogIf(GlobalContext, err)
|
|
|
|
gatherers := prometheus.Gatherers{
|
|
prometheus.DefaultGatherer,
|
|
registry,
|
|
}
|
|
// Delegate http serving to Prometheus client library, which will call collector.Collect.
|
|
return promhttp.InstrumentMetricHandler(
|
|
registry,
|
|
promhttp.HandlerFor(gatherers,
|
|
promhttp.HandlerOpts{
|
|
ErrorHandling: promhttp.ContinueOnError,
|
|
}),
|
|
)
|
|
|
|
}
|
|
|
|
// AuthMiddleware checks if the bearer token is valid and authorized.
|
|
func AuthMiddleware(h http.Handler) http.Handler {
|
|
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
claims, owner, authErr := webRequestAuthenticate(r)
|
|
if authErr != nil || !claims.VerifyIssuer("prometheus", true) {
|
|
w.WriteHeader(http.StatusForbidden)
|
|
return
|
|
}
|
|
// For authenticated users apply IAM policy.
|
|
if !globalIAMSys.IsAllowed(iampolicy.Args{
|
|
AccountName: claims.AccessKey,
|
|
Action: iampolicy.PrometheusAdminAction,
|
|
ConditionValues: getConditionValues(r, "", claims.AccessKey, claims.Map()),
|
|
IsOwner: owner,
|
|
Claims: claims.Map(),
|
|
}) {
|
|
w.WriteHeader(http.StatusForbidden)
|
|
return
|
|
}
|
|
h.ServeHTTP(w, r)
|
|
})
|
|
}
|