Expose administrative state of network interfaces as 'adminstate'. (prometheus#2515)

Signed-off-by: Maximilian Wilhelm <[email protected]>

Author: BarbarossaTM

collector/fixtures/e2e-64k-page-output.txt

@@ -2411,8 +2411,8 @@ node_network_iface_link_mode{device="bond0"} 1
 node_network_iface_link_mode{device="eth0"} 1
 # HELP node_network_info Non-numeric data from /sys/class/net/<iface>, value is always 1.
 # TYPE node_network_info gauge
-node_network_info{address="01:01:01:01:01:01",broadcast="ff:ff:ff:ff:ff:ff",device="bond0",duplex="full",ifalias="",operstate="up"} 1
-node_network_info{address="01:01:01:01:01:01",broadcast="ff:ff:ff:ff:ff:ff",device="eth0",duplex="full",ifalias="",operstate="up"} 1
+node_network_info{address="01:01:01:01:01:01",adminstate="up",broadcast="ff:ff:ff:ff:ff:ff",device="bond0",duplex="full",ifalias="",operstate="up"} 1
+node_network_info{address="01:01:01:01:01:01",adminstate="up",broadcast="ff:ff:ff:ff:ff:ff",device="eth0",duplex="full",ifalias="",operstate="up"} 1
 # HELP node_network_mtu_bytes Network device property: mtu_bytes
 # TYPE node_network_mtu_bytes gauge
 node_network_mtu_bytes{device="bond0"} 1500

collector/fixtures/e2e-output.txt

@@ -2702,8 +2702,8 @@ node_network_iface_link_mode{device="bond0"} 1
 node_network_iface_link_mode{device="eth0"} 1
 # HELP node_network_info Non-numeric data from /sys/class/net/<iface>, value is always 1.
 # TYPE node_network_info gauge
-node_network_info{address="01:01:01:01:01:01",broadcast="ff:ff:ff:ff:ff:ff",device="bond0",duplex="full",ifalias="",operstate="up"} 1
-node_network_info{address="01:01:01:01:01:01",broadcast="ff:ff:ff:ff:ff:ff",device="eth0",duplex="full",ifalias="",operstate="up"} 1
+node_network_info{address="01:01:01:01:01:01",adminstate="up",broadcast="ff:ff:ff:ff:ff:ff",device="bond0",duplex="full",ifalias="",operstate="up"} 1
+node_network_info{address="01:01:01:01:01:01",adminstate="up",broadcast="ff:ff:ff:ff:ff:ff",device="eth0",duplex="full",ifalias="",operstate="up"} 1
 # HELP node_network_mtu_bytes Network device property: mtu_bytes
 # TYPE node_network_mtu_bytes gauge
 node_network_mtu_bytes{device="bond0"} 1500

collector/netclass_linux.go

@@ -19,6 +19,7 @@ package collector
 import (
 	"errors"
 	"fmt"
+	"net"
 	"os"
 	"regexp"
 
@@ -96,12 +97,12 @@ func (c *netClassCollector) netClassSysfsUpdate(ch chan<- prometheus.Metric) err
 		infoDesc := prometheus.NewDesc(
 			prometheus.BuildFQName(namespace, c.subsystem, "info"),
 			"Non-numeric data from /sys/class/net/<iface>, value is always 1.",
-			[]string{"device", "address", "broadcast", "duplex", "operstate", "ifalias"},
+			[]string{"device", "address", "broadcast", "duplex", "operstate", "adminstate", "ifalias"},
 			nil,
 		)
 		infoValue := 1.0
 
-		ch <- prometheus.MustNewConstMetric(infoDesc, prometheus.GaugeValue, infoValue, ifaceInfo.Name, ifaceInfo.Address, ifaceInfo.Broadcast, ifaceInfo.Duplex, ifaceInfo.OperState, ifaceInfo.IfAlias)
+		ch <- prometheus.MustNewConstMetric(infoDesc, prometheus.GaugeValue, infoValue, ifaceInfo.Name, ifaceInfo.Address, ifaceInfo.Broadcast, ifaceInfo.Duplex, ifaceInfo.OperState, getAdminState(ifaceInfo.Flags), ifaceInfo.IfAlias)
 
 		pushMetric(ch, c.getFieldDesc("address_assign_type"), "address_assign_type", ifaceInfo.AddrAssignType, prometheus.GaugeValue, ifaceInfo.Name)
 		pushMetric(ch, c.getFieldDesc("carrier"), "carrier", ifaceInfo.Carrier, prometheus.GaugeValue, ifaceInfo.Name)
@@ -170,3 +171,15 @@ func (c *netClassCollector) getNetClassInfo() (sysfs.NetClass, error) {
 
 	return netClass, nil
 }
+
+func getAdminState(flags *int64) string {
+	if flags == nil {
+		return "unknown"
+	}
+
+	if *flags&int64(net.FlagUp) == 1 {
+		return "up"
+	}
+
+	return "down"
+}