mirror of
https://github.com/prometheus/node_exporter.git
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168 lines
4.5 KiB
Go
168 lines
4.5 KiB
Go
// +build !noipvs
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package collector
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import (
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"flag"
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"fmt"
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"strconv"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/procfs"
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)
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var (
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ipvsProcfsMountPoint = flag.String("collector.ipvs.procfs", procfs.DefaultMountPoint, "procfs mountpoint.")
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)
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type ipvsCollector struct {
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Collector
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fs procfs.FS
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backendConnectionsActive, backendConnectionsInact, backendWeight *prometheus.GaugeVec
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connections, incomingPackets, outgoingPackets, incomingBytes, outgoingBytes prometheus.Counter
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}
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func init() {
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Factories["ipvs"] = NewIPVSCollector
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}
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// NewIPVSCollector sets up a new collector for IPVS metrics. It accepts the
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// "procfs" config parameter to override the default proc location (/proc).
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func NewIPVSCollector() (Collector, error) {
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return newIPVSCollector()
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}
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func newIPVSCollector() (*ipvsCollector, error) {
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var (
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ipvsBackendLabelNames = []string{
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"local_address",
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"local_port",
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"remote_address",
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"remote_port",
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"proto",
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}
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c ipvsCollector
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err error
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subsystem = "ipvs"
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)
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c.fs, err = procfs.NewFS(*ipvsProcfsMountPoint)
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if err != nil {
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return nil, err
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}
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c.connections = prometheus.NewCounter(
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prometheus.CounterOpts{
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Namespace: Namespace,
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Subsystem: subsystem,
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Name: "connections_total",
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Help: "The total number of connections made.",
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},
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)
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c.incomingPackets = prometheus.NewCounter(
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prometheus.CounterOpts{
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Namespace: Namespace,
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Subsystem: subsystem,
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Name: "incoming_packets_total",
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Help: "The total number of incoming packets.",
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},
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)
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c.outgoingPackets = prometheus.NewCounter(
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prometheus.CounterOpts{
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Namespace: Namespace,
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Subsystem: subsystem,
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Name: "outgoing_packets_total",
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Help: "The total number of outgoing packets.",
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},
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)
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c.incomingBytes = prometheus.NewCounter(
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prometheus.CounterOpts{
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Namespace: Namespace,
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Subsystem: subsystem,
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Name: "incoming_bytes_total",
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Help: "The total amount of incoming data.",
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},
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)
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c.outgoingBytes = prometheus.NewCounter(
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prometheus.CounterOpts{
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Namespace: Namespace,
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Subsystem: subsystem,
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Name: "outgoing_bytes_total",
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Help: "The total amount of outgoing data.",
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},
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)
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c.backendConnectionsActive = prometheus.NewGaugeVec(
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prometheus.GaugeOpts{
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Namespace: Namespace,
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Subsystem: subsystem,
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Name: "backend_connections_active",
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Help: "The current active connections by local and remote address.",
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},
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ipvsBackendLabelNames,
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)
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c.backendConnectionsInact = prometheus.NewGaugeVec(
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prometheus.GaugeOpts{
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Namespace: Namespace,
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Subsystem: subsystem,
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Name: "backend_connections_inactive",
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Help: "The current inactive connections by local and remote address.",
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},
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ipvsBackendLabelNames,
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)
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c.backendWeight = prometheus.NewGaugeVec(
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prometheus.GaugeOpts{
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Namespace: Namespace,
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Subsystem: subsystem,
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Name: "backend_weight",
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Help: "The current backend weight by local and remote address.",
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},
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ipvsBackendLabelNames,
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)
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return &c, nil
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}
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func (c *ipvsCollector) Update(ch chan<- prometheus.Metric) error {
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ipvsStats, err := c.fs.NewIPVSStats()
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if err != nil {
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return fmt.Errorf("could not get IPVS stats: %s", err)
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}
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c.connections.Set(float64(ipvsStats.Connections))
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c.incomingPackets.Set(float64(ipvsStats.IncomingPackets))
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c.outgoingPackets.Set(float64(ipvsStats.OutgoingPackets))
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c.incomingBytes.Set(float64(ipvsStats.IncomingBytes))
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c.outgoingBytes.Set(float64(ipvsStats.OutgoingBytes))
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c.connections.Collect(ch)
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c.incomingPackets.Collect(ch)
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c.outgoingPackets.Collect(ch)
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c.incomingBytes.Collect(ch)
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c.outgoingBytes.Collect(ch)
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backendStats, err := c.fs.NewIPVSBackendStatus()
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if err != nil {
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return fmt.Errorf("could not get backend status: %s", err)
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}
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for _, backend := range backendStats {
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labelValues := []string{
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backend.LocalAddress.String(),
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strconv.FormatUint(uint64(backend.LocalPort), 10),
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backend.RemoteAddress.String(),
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strconv.FormatUint(uint64(backend.RemotePort), 10),
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backend.Proto,
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}
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c.backendConnectionsActive.WithLabelValues(labelValues...).Set(float64(backend.ActiveConn))
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c.backendConnectionsInact.WithLabelValues(labelValues...).Set(float64(backend.InactConn))
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c.backendWeight.WithLabelValues(labelValues...).Set(float64(backend.Weight))
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}
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c.backendConnectionsActive.Collect(ch)
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c.backendConnectionsInact.Collect(ch)
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c.backendWeight.Collect(ch)
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return nil
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}
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