mirror of
https://github.com/prometheus/node_exporter.git
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add network_route collector
Signed-off-by: kamijin_fanta <kamijin@live.jp>
This commit is contained in:
kamijin_fanta
parent
8b466360a3
commit
1f5898999e
172
collector/network_route_linux.go
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172
collector/network_route_linux.go
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@ -0,0 +1,172 @@
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// Copyright 2020 The Prometheus Authors
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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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// +build !nonetworkroute
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package collector
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import (
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"fmt"
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"net"
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"strconv"
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"github.com/go-kit/kit/log"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/vishvananda/netlink"
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)
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type networkRouteCollector struct {
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routeDesc *prometheus.Desc
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routesTotalDesc *prometheus.Desc
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logger log.Logger
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}
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func init() {
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registerCollector("network_route", defaultDisabled, NewNetworkRouteCollector)
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}
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// NewSystemdCollector returns a new Collector exposing systemd statistics.
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func NewNetworkRouteCollector(logger log.Logger) (Collector, error) {
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const subsystem = "network"
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routeDesc := prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "route"),
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"network routing table", []string{"if", "src", "dest", "gw", "priority", "proto", "weight"}, nil,
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)
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routeTotalDesc := prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, "routes_total"),
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"network total routes", []string{"if"}, nil,
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)
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return &networkRouteCollector{
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routeDesc: routeDesc,
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routesTotalDesc: routeTotalDesc,
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logger: logger,
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}, nil
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}
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func (n networkRouteCollector) Update(ch chan<- prometheus.Metric) error {
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deviceRoutes := make(map[string]int)
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routes, err := netlink.RouteList(nil, netlink.FAMILY_V4)
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if err != nil {
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return fmt.Errorf("couldn't get route list: %w", err)
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}
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for _, route := range routes {
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if len(route.MultiPath) != 0 { // route has multipath
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for _, nexthop := range route.MultiPath {
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link, err := netlink.LinkByIndex(nexthop.LinkIndex)
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if err != nil {
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return fmt.Errorf("couldn't get link by index: %w", err)
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}
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labels := []string{
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link.Attrs().Name, // if
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networkRouteIPToString(route.Src), // src
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networkRouteIPNetToString(route.Dst), // dest
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networkRouteIPToString(nexthop.Gw), // gw
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strconv.Itoa(route.Priority), // priority(metrics)
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networkRouteProtocolToString(route.Protocol), // proto
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strconv.Itoa(nexthop.Hops + 1), // weight
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}
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ch <- prometheus.MustNewConstMetric(n.routeDesc, prometheus.GaugeValue, 1, labels...)
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deviceRoutes[link.Attrs().Name]++
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}
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} else {
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link, err := netlink.LinkByIndex(route.LinkIndex)
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if err != nil {
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return fmt.Errorf("couldn't get link by index: %w", err)
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}
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labels := []string{
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link.Attrs().Name, // if
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networkRouteIPToString(route.Src), // src
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networkRouteIPNetToString(route.Dst), // dest
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networkRouteIPToString(route.Gw), // gw
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strconv.Itoa(route.Priority), // priority(metrics)
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networkRouteProtocolToString(route.Protocol), // proto
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"", // weight
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}
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ch <- prometheus.MustNewConstMetric(n.routeDesc, prometheus.GaugeValue, 1, labels...)
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deviceRoutes[link.Attrs().Name]++
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}
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}
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for dev, total := range deviceRoutes {
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ch <- prometheus.MustNewConstMetric(n.routesTotalDesc, prometheus.GaugeValue, float64(total), dev)
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}
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return nil
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}
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func networkRouteIPNetToString(ip *net.IPNet) string {
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if ip == nil {
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return "default"
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}
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return ip.String()
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}
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func networkRouteIPToString(ip net.IP) string {
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if len(ip) == 0 {
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return ""
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}
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return ip.String()
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}
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func networkRouteProtocolToString(protocol int) string {
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// from linux kernel 'include/uapi/linux/rtnetlink.h'
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switch protocol {
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case 0:
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return "unspec"
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case 1:
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return "redirect"
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case 2:
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return "kernel"
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case 3:
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return "boot"
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case 4:
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return "static"
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case 8:
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return "gated"
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case 9:
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return "ra"
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case 10:
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return "mrt"
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case 11:
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return "zebra"
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case 12:
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return "bird"
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case 13:
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return "dnrouted"
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case 14:
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return "xorp"
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case 15:
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return "ntk"
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case 16:
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return "dhcp"
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case 17:
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return "mrouted"
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case 42:
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return "babel"
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case 186:
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return "bgp"
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case 187:
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return "isis"
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case 188:
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return "ospf"
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case 189:
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return "rip"
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case 192:
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return "eigrp"
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}
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return "unknown"
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}
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1
go.mod
1
go.mod
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@ -19,6 +19,7 @@ require (
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github.com/prometheus/procfs v0.2.0
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github.com/siebenmann/go-kstat v0.0.0-20200303194639-4e8294f9e9d5
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github.com/soundcloud/go-runit v0.0.0-20150630195641-06ad41a06c4a
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github.com/vishvananda/netlink v1.1.0
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go.uber.org/multierr v1.5.0 // indirect
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golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a
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golang.org/x/lint v0.0.0-20200302205851-738671d3881b // indirect
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5
go.sum
5
go.sum
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@ -329,6 +329,10 @@ github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81P
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github.com/tmc/grpc-websocket-proxy v0.0.0-20170815181823-89b8d40f7ca8/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
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github.com/urfave/cli v1.20.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=
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github.com/urfave/cli v1.22.1/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
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github.com/vishvananda/netlink v1.1.0 h1:1iyaYNBLmP6L0220aDnYQpo1QEV4t4hJ+xEEhhJH8j0=
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github.com/vishvananda/netlink v1.1.0/go.mod h1:cTgwzPIzzgDAYoQrMm0EdrjRUBkTqKYppBueQtXaqoE=
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github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df h1:OviZH7qLw/7ZovXvuNyL3XQl8UFofeikI1NW1Gypu7k=
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github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df/go.mod h1:JP3t17pCcGlemwknint6hfoeCVQrEMVwxRLRjXpq+BU=
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github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
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github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
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go.etcd.io/bbolt v1.3.3/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
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@ -427,6 +431,7 @@ golang.org/x/sys v0.0.0-20190411185658-b44545bcd369/go.mod h1:h1NjWce9XRLGQEsW7w
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golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20190502145724-3ef323f4f1fd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20190606203320-7fc4e5ec1444/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20190726091711-fc99dfbffb4e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20190826190057-c7b8b68b1456/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20190902133755-9109b7679e13 h1:tdsQdquKbTNMsSZLqnLELJGzCANp9oXhu6zFBW6ODx4=
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