mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-27 02:53:02 +01:00
c23b76bfbb
* Bump exporter-toolkit to the latest release. * Use new toolkit landing page function. * Update kingpin flags. Signed-off-by: Ben Kochie <superq@gmail.com>
233 lines
7.4 KiB
Go
233 lines
7.4 KiB
Go
// Copyright 2015 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
//go:build !noipvs
|
|
// +build !noipvs
|
|
|
|
package collector
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"os"
|
|
"sort"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/alecthomas/kingpin/v2"
|
|
"github.com/go-kit/log"
|
|
"github.com/go-kit/log/level"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/procfs"
|
|
)
|
|
|
|
type ipvsCollector struct {
|
|
Collector
|
|
fs procfs.FS
|
|
backendLabels []string
|
|
backendConnectionsActive, backendConnectionsInact, backendWeight typedDesc
|
|
connections, incomingPackets, outgoingPackets, incomingBytes, outgoingBytes typedDesc
|
|
logger log.Logger
|
|
}
|
|
|
|
type ipvsBackendStatus struct {
|
|
ActiveConn uint64
|
|
InactConn uint64
|
|
Weight uint64
|
|
}
|
|
|
|
const (
|
|
ipvsLabelLocalAddress = "local_address"
|
|
ipvsLabelLocalPort = "local_port"
|
|
ipvsLabelRemoteAddress = "remote_address"
|
|
ipvsLabelRemotePort = "remote_port"
|
|
ipvsLabelProto = "proto"
|
|
ipvsLabelLocalMark = "local_mark"
|
|
)
|
|
|
|
var (
|
|
fullIpvsBackendLabels = []string{
|
|
ipvsLabelLocalAddress,
|
|
ipvsLabelLocalPort,
|
|
ipvsLabelRemoteAddress,
|
|
ipvsLabelRemotePort,
|
|
ipvsLabelProto,
|
|
ipvsLabelLocalMark,
|
|
}
|
|
ipvsLabels = kingpin.Flag("collector.ipvs.backend-labels", "Comma separated list for IPVS backend stats labels.").Default(strings.Join(fullIpvsBackendLabels, ",")).String()
|
|
)
|
|
|
|
func init() {
|
|
registerCollector("ipvs", defaultEnabled, NewIPVSCollector)
|
|
}
|
|
|
|
// NewIPVSCollector sets up a new collector for IPVS metrics. It accepts the
|
|
// "procfs" config parameter to override the default proc location (/proc).
|
|
func NewIPVSCollector(logger log.Logger) (Collector, error) {
|
|
return newIPVSCollector(logger)
|
|
}
|
|
|
|
func newIPVSCollector(logger log.Logger) (*ipvsCollector, error) {
|
|
var (
|
|
c ipvsCollector
|
|
err error
|
|
subsystem = "ipvs"
|
|
)
|
|
|
|
if c.backendLabels, err = c.parseIpvsLabels(*ipvsLabels); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
c.logger = logger
|
|
c.fs, err = procfs.NewFS(*procPath)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to open procfs: %w", err)
|
|
}
|
|
|
|
c.connections = typedDesc{prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "connections_total"),
|
|
"The total number of connections made.",
|
|
nil, nil,
|
|
), prometheus.CounterValue}
|
|
c.incomingPackets = typedDesc{prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "incoming_packets_total"),
|
|
"The total number of incoming packets.",
|
|
nil, nil,
|
|
), prometheus.CounterValue}
|
|
c.outgoingPackets = typedDesc{prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "outgoing_packets_total"),
|
|
"The total number of outgoing packets.",
|
|
nil, nil,
|
|
), prometheus.CounterValue}
|
|
c.incomingBytes = typedDesc{prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "incoming_bytes_total"),
|
|
"The total amount of incoming data.",
|
|
nil, nil,
|
|
), prometheus.CounterValue}
|
|
c.outgoingBytes = typedDesc{prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "outgoing_bytes_total"),
|
|
"The total amount of outgoing data.",
|
|
nil, nil,
|
|
), prometheus.CounterValue}
|
|
c.backendConnectionsActive = typedDesc{prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "backend_connections_active"),
|
|
"The current active connections by local and remote address.",
|
|
c.backendLabels, nil,
|
|
), prometheus.GaugeValue}
|
|
c.backendConnectionsInact = typedDesc{prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "backend_connections_inactive"),
|
|
"The current inactive connections by local and remote address.",
|
|
c.backendLabels, nil,
|
|
), prometheus.GaugeValue}
|
|
c.backendWeight = typedDesc{prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "backend_weight"),
|
|
"The current backend weight by local and remote address.",
|
|
c.backendLabels, nil,
|
|
), prometheus.GaugeValue}
|
|
|
|
return &c, nil
|
|
}
|
|
|
|
func (c *ipvsCollector) Update(ch chan<- prometheus.Metric) error {
|
|
ipvsStats, err := c.fs.IPVSStats()
|
|
if err != nil {
|
|
// Cannot access ipvs metrics, report no error.
|
|
if errors.Is(err, os.ErrNotExist) {
|
|
level.Debug(c.logger).Log("msg", "ipvs collector metrics are not available for this system")
|
|
return ErrNoData
|
|
}
|
|
return fmt.Errorf("could not get IPVS stats: %w", err)
|
|
}
|
|
ch <- c.connections.mustNewConstMetric(float64(ipvsStats.Connections))
|
|
ch <- c.incomingPackets.mustNewConstMetric(float64(ipvsStats.IncomingPackets))
|
|
ch <- c.outgoingPackets.mustNewConstMetric(float64(ipvsStats.OutgoingPackets))
|
|
ch <- c.incomingBytes.mustNewConstMetric(float64(ipvsStats.IncomingBytes))
|
|
ch <- c.outgoingBytes.mustNewConstMetric(float64(ipvsStats.OutgoingBytes))
|
|
|
|
backendStats, err := c.fs.IPVSBackendStatus()
|
|
if err != nil {
|
|
return fmt.Errorf("could not get backend status: %w", err)
|
|
}
|
|
|
|
sums := map[string]ipvsBackendStatus{}
|
|
labelValues := map[string][]string{}
|
|
for _, backend := range backendStats {
|
|
localAddress := ""
|
|
if backend.LocalAddress.String() != "<nil>" {
|
|
localAddress = backend.LocalAddress.String()
|
|
}
|
|
kv := make([]string, len(c.backendLabels))
|
|
for i, label := range c.backendLabels {
|
|
var labelValue string
|
|
switch label {
|
|
case ipvsLabelLocalAddress:
|
|
labelValue = localAddress
|
|
case ipvsLabelLocalPort:
|
|
labelValue = strconv.FormatUint(uint64(backend.LocalPort), 10)
|
|
case ipvsLabelRemoteAddress:
|
|
labelValue = backend.RemoteAddress.String()
|
|
case ipvsLabelRemotePort:
|
|
labelValue = strconv.FormatUint(uint64(backend.RemotePort), 10)
|
|
case ipvsLabelProto:
|
|
labelValue = backend.Proto
|
|
case ipvsLabelLocalMark:
|
|
labelValue = backend.LocalMark
|
|
}
|
|
kv[i] = labelValue
|
|
}
|
|
key := strings.Join(kv, "-")
|
|
status := sums[key]
|
|
status.ActiveConn += backend.ActiveConn
|
|
status.InactConn += backend.InactConn
|
|
status.Weight += backend.Weight
|
|
sums[key] = status
|
|
labelValues[key] = kv
|
|
}
|
|
for key, status := range sums {
|
|
kv := labelValues[key]
|
|
ch <- c.backendConnectionsActive.mustNewConstMetric(float64(status.ActiveConn), kv...)
|
|
ch <- c.backendConnectionsInact.mustNewConstMetric(float64(status.InactConn), kv...)
|
|
ch <- c.backendWeight.mustNewConstMetric(float64(status.Weight), kv...)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (c *ipvsCollector) parseIpvsLabels(labelString string) ([]string, error) {
|
|
labels := strings.Split(labelString, ",")
|
|
labelSet := make(map[string]bool, len(labels))
|
|
results := make([]string, 0, len(labels))
|
|
for _, label := range labels {
|
|
if label != "" {
|
|
labelSet[label] = true
|
|
}
|
|
}
|
|
|
|
for _, label := range fullIpvsBackendLabels {
|
|
if labelSet[label] {
|
|
results = append(results, label)
|
|
}
|
|
delete(labelSet, label)
|
|
}
|
|
|
|
if len(labelSet) > 0 {
|
|
keys := make([]string, 0, len(labelSet))
|
|
for label := range labelSet {
|
|
keys = append(keys, label)
|
|
}
|
|
sort.Strings(keys)
|
|
return nil, fmt.Errorf("unknown IPVS backend labels: %q", strings.Join(keys, ", "))
|
|
}
|
|
|
|
return results, nil
|
|
}
|