mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-10 07:34:09 -08:00
512 lines
19 KiB
Go
512 lines
19 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 !nosystemd
|
|
// +build !nosystemd
|
|
|
|
package collector
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"math"
|
|
"regexp"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/coreos/go-systemd/dbus"
|
|
"github.com/go-kit/log"
|
|
"github.com/go-kit/log/level"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
kingpin "gopkg.in/alecthomas/kingpin.v2"
|
|
)
|
|
|
|
const (
|
|
// minSystemdVersionSystemState is the minimum SystemD version for availability of
|
|
// the 'SystemState' manager property and the timer property 'LastTriggerUSec'
|
|
// https://github.com/prometheus/node_exporter/issues/291
|
|
minSystemdVersionSystemState = 212
|
|
)
|
|
|
|
var (
|
|
unitIncludeSet bool
|
|
unitInclude = kingpin.Flag("collector.systemd.unit-include", "Regexp of systemd units to include. Units must both match include and not match exclude to be included.").Default(".+").PreAction(func(c *kingpin.ParseContext) error {
|
|
unitIncludeSet = true
|
|
return nil
|
|
}).String()
|
|
oldUnitInclude = kingpin.Flag("collector.systemd.unit-whitelist", "DEPRECATED: Use --collector.systemd.unit-include").Hidden().String()
|
|
unitExcludeSet bool
|
|
unitExclude = kingpin.Flag("collector.systemd.unit-exclude", "Regexp of systemd units to exclude. Units must both match include and not match exclude to be included.").Default(".+\\.(automount|device|mount|scope|slice)").PreAction(func(c *kingpin.ParseContext) error {
|
|
unitExcludeSet = true
|
|
return nil
|
|
}).String()
|
|
oldUnitExclude = kingpin.Flag("collector.systemd.unit-blacklist", "DEPRECATED: Use collector.systemd.unit-exclude").Hidden().String()
|
|
systemdPrivate = kingpin.Flag("collector.systemd.private", "Establish a private, direct connection to systemd without dbus (Strongly discouraged since it requires root. For testing purposes only).").Hidden().Bool()
|
|
enableTaskMetrics = kingpin.Flag("collector.systemd.enable-task-metrics", "Enables service unit tasks metrics unit_tasks_current and unit_tasks_max").Bool()
|
|
enableRestartsMetrics = kingpin.Flag("collector.systemd.enable-restarts-metrics", "Enables service unit metric service_restart_total").Bool()
|
|
enableStartTimeMetrics = kingpin.Flag("collector.systemd.enable-start-time-metrics", "Enables service unit metric unit_start_time_seconds").Bool()
|
|
)
|
|
|
|
type systemdCollector struct {
|
|
unitDesc *prometheus.Desc
|
|
unitStartTimeDesc *prometheus.Desc
|
|
unitTasksCurrentDesc *prometheus.Desc
|
|
unitTasksMaxDesc *prometheus.Desc
|
|
systemRunningDesc *prometheus.Desc
|
|
summaryDesc *prometheus.Desc
|
|
nRestartsDesc *prometheus.Desc
|
|
timerLastTriggerDesc *prometheus.Desc
|
|
socketAcceptedConnectionsDesc *prometheus.Desc
|
|
socketCurrentConnectionsDesc *prometheus.Desc
|
|
socketRefusedConnectionsDesc *prometheus.Desc
|
|
systemdVersionDesc *prometheus.Desc
|
|
systemdVersion int
|
|
unitIncludePattern *regexp.Regexp
|
|
unitExcludePattern *regexp.Regexp
|
|
logger log.Logger
|
|
}
|
|
|
|
var unitStatesName = []string{"active", "activating", "deactivating", "inactive", "failed"}
|
|
|
|
func init() {
|
|
registerCollector("systemd", defaultDisabled, NewSystemdCollector)
|
|
}
|
|
|
|
// NewSystemdCollector returns a new Collector exposing systemd statistics.
|
|
func NewSystemdCollector(logger log.Logger) (Collector, error) {
|
|
const subsystem = "systemd"
|
|
|
|
unitDesc := prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "unit_state"),
|
|
"Systemd unit", []string{"name", "state", "type"}, nil,
|
|
)
|
|
unitStartTimeDesc := prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "unit_start_time_seconds"),
|
|
"Start time of the unit since unix epoch in seconds.", []string{"name"}, nil,
|
|
)
|
|
unitTasksCurrentDesc := prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "unit_tasks_current"),
|
|
"Current number of tasks per Systemd unit", []string{"name"}, nil,
|
|
)
|
|
unitTasksMaxDesc := prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "unit_tasks_max"),
|
|
"Maximum number of tasks per Systemd unit", []string{"name"}, nil,
|
|
)
|
|
systemRunningDesc := prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "system_running"),
|
|
"Whether the system is operational (see 'systemctl is-system-running')",
|
|
nil, nil,
|
|
)
|
|
summaryDesc := prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "units"),
|
|
"Summary of systemd unit states", []string{"state"}, nil)
|
|
nRestartsDesc := prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "service_restart_total"),
|
|
"Service unit count of Restart triggers", []string{"name"}, nil)
|
|
timerLastTriggerDesc := prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "timer_last_trigger_seconds"),
|
|
"Seconds since epoch of last trigger.", []string{"name"}, nil)
|
|
socketAcceptedConnectionsDesc := prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "socket_accepted_connections_total"),
|
|
"Total number of accepted socket connections", []string{"name"}, nil)
|
|
socketCurrentConnectionsDesc := prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "socket_current_connections"),
|
|
"Current number of socket connections", []string{"name"}, nil)
|
|
socketRefusedConnectionsDesc := prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "socket_refused_connections_total"),
|
|
"Total number of refused socket connections", []string{"name"}, nil)
|
|
systemdVersionDesc := prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, subsystem, "version"),
|
|
"Detected systemd version", []string{}, nil)
|
|
|
|
if *oldUnitExclude != "" {
|
|
if !unitExcludeSet {
|
|
level.Warn(logger).Log("msg", "--collector.systemd.unit-blacklist is DEPRECATED and will be removed in 2.0.0, use --collector.systemd.unit-exclude")
|
|
*unitExclude = *oldUnitExclude
|
|
} else {
|
|
return nil, errors.New("--collector.systemd.unit-blacklist and --collector.systemd.unit-exclude are mutually exclusive")
|
|
}
|
|
}
|
|
if *oldUnitInclude != "" {
|
|
if !unitIncludeSet {
|
|
level.Warn(logger).Log("msg", "--collector.systemd.unit-whitelist is DEPRECATED and will be removed in 2.0.0, use --collector.systemd.unit-include")
|
|
*unitInclude = *oldUnitInclude
|
|
} else {
|
|
return nil, errors.New("--collector.systemd.unit-whitelist and --collector.systemd.unit-include are mutually exclusive")
|
|
}
|
|
}
|
|
level.Info(logger).Log("msg", "Parsed flag --collector.systemd.unit-include", "flag", *unitInclude)
|
|
unitIncludePattern := regexp.MustCompile(fmt.Sprintf("^(?:%s)$", *unitInclude))
|
|
level.Info(logger).Log("msg", "Parsed flag --collector.systemd.unit-exclude", "flag", *unitExclude)
|
|
unitExcludePattern := regexp.MustCompile(fmt.Sprintf("^(?:%s)$", *unitExclude))
|
|
|
|
systemdVersion := getSystemdVersion(logger)
|
|
if systemdVersion < minSystemdVersionSystemState {
|
|
level.Warn(logger).Log("msg", "Detected systemd version is lower than minimum", "current", systemdVersion, "minimum", minSystemdVersionSystemState)
|
|
level.Warn(logger).Log("msg", "Some systemd state and timer metrics will not be available")
|
|
}
|
|
|
|
return &systemdCollector{
|
|
unitDesc: unitDesc,
|
|
unitStartTimeDesc: unitStartTimeDesc,
|
|
unitTasksCurrentDesc: unitTasksCurrentDesc,
|
|
unitTasksMaxDesc: unitTasksMaxDesc,
|
|
systemRunningDesc: systemRunningDesc,
|
|
summaryDesc: summaryDesc,
|
|
nRestartsDesc: nRestartsDesc,
|
|
timerLastTriggerDesc: timerLastTriggerDesc,
|
|
socketAcceptedConnectionsDesc: socketAcceptedConnectionsDesc,
|
|
socketCurrentConnectionsDesc: socketCurrentConnectionsDesc,
|
|
socketRefusedConnectionsDesc: socketRefusedConnectionsDesc,
|
|
systemdVersionDesc: systemdVersionDesc,
|
|
systemdVersion: systemdVersion,
|
|
unitIncludePattern: unitIncludePattern,
|
|
unitExcludePattern: unitExcludePattern,
|
|
logger: logger,
|
|
}, nil
|
|
}
|
|
|
|
// Update gathers metrics from systemd. Dbus collection is done in parallel
|
|
// to reduce wait time for responses.
|
|
func (c *systemdCollector) Update(ch chan<- prometheus.Metric) error {
|
|
begin := time.Now()
|
|
conn, err := newSystemdDbusConn()
|
|
if err != nil {
|
|
return fmt.Errorf("couldn't get dbus connection: %w", err)
|
|
}
|
|
defer conn.Close()
|
|
|
|
allUnits, err := c.getAllUnits(conn)
|
|
if err != nil {
|
|
return fmt.Errorf("couldn't get units: %w", err)
|
|
}
|
|
level.Debug(c.logger).Log("msg", "getAllUnits took", "duration_seconds", time.Since(begin).Seconds())
|
|
|
|
begin = time.Now()
|
|
summary := summarizeUnits(allUnits)
|
|
c.collectSummaryMetrics(ch, summary)
|
|
level.Debug(c.logger).Log("msg", "collectSummaryMetrics took", "duration_seconds", time.Since(begin).Seconds())
|
|
|
|
begin = time.Now()
|
|
units := filterUnits(allUnits, c.unitIncludePattern, c.unitExcludePattern, c.logger)
|
|
level.Debug(c.logger).Log("msg", "filterUnits took", "duration_seconds", time.Since(begin).Seconds())
|
|
|
|
var wg sync.WaitGroup
|
|
defer wg.Wait()
|
|
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
begin = time.Now()
|
|
c.collectUnitStatusMetrics(conn, ch, units)
|
|
level.Debug(c.logger).Log("msg", "collectUnitStatusMetrics took", "duration_seconds", time.Since(begin).Seconds())
|
|
}()
|
|
|
|
if *enableStartTimeMetrics {
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
begin = time.Now()
|
|
c.collectUnitStartTimeMetrics(conn, ch, units)
|
|
level.Debug(c.logger).Log("msg", "collectUnitStartTimeMetrics took", "duration_seconds", time.Since(begin).Seconds())
|
|
}()
|
|
}
|
|
|
|
if *enableTaskMetrics {
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
begin = time.Now()
|
|
c.collectUnitTasksMetrics(conn, ch, units)
|
|
level.Debug(c.logger).Log("msg", "collectUnitTasksMetrics took", "duration_seconds", time.Since(begin).Seconds())
|
|
}()
|
|
}
|
|
|
|
if c.systemdVersion >= minSystemdVersionSystemState {
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
begin = time.Now()
|
|
c.collectTimers(conn, ch, units)
|
|
level.Debug(c.logger).Log("msg", "collectTimers took", "duration_seconds", time.Since(begin).Seconds())
|
|
}()
|
|
}
|
|
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
begin = time.Now()
|
|
c.collectSockets(conn, ch, units)
|
|
level.Debug(c.logger).Log("msg", "collectSockets took", "duration_seconds", time.Since(begin).Seconds())
|
|
}()
|
|
|
|
if c.systemdVersion >= minSystemdVersionSystemState {
|
|
begin = time.Now()
|
|
err = c.collectSystemState(conn, ch)
|
|
level.Debug(c.logger).Log("msg", "collectSystemState took", "duration_seconds", time.Since(begin).Seconds())
|
|
}
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.systemdVersionDesc, prometheus.GaugeValue, float64(c.systemdVersion))
|
|
|
|
return err
|
|
}
|
|
|
|
func (c *systemdCollector) collectUnitStatusMetrics(conn *dbus.Conn, ch chan<- prometheus.Metric, units []unit) {
|
|
for _, unit := range units {
|
|
serviceType := ""
|
|
if strings.HasSuffix(unit.Name, ".service") {
|
|
serviceTypeProperty, err := conn.GetUnitTypeProperty(unit.Name, "Service", "Type")
|
|
if err != nil {
|
|
level.Debug(c.logger).Log("msg", "couldn't get unit type", "unit", unit.Name, "err", err)
|
|
} else {
|
|
serviceType = serviceTypeProperty.Value.Value().(string)
|
|
}
|
|
} else if strings.HasSuffix(unit.Name, ".mount") {
|
|
serviceTypeProperty, err := conn.GetUnitTypeProperty(unit.Name, "Mount", "Type")
|
|
if err != nil {
|
|
level.Debug(c.logger).Log("msg", "couldn't get unit type", "unit", unit.Name, "err", err)
|
|
} else {
|
|
serviceType = serviceTypeProperty.Value.Value().(string)
|
|
}
|
|
}
|
|
for _, stateName := range unitStatesName {
|
|
isActive := 0.0
|
|
if stateName == unit.ActiveState {
|
|
isActive = 1.0
|
|
}
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.unitDesc, prometheus.GaugeValue, isActive,
|
|
unit.Name, stateName, serviceType)
|
|
}
|
|
if *enableRestartsMetrics && strings.HasSuffix(unit.Name, ".service") {
|
|
// NRestarts wasn't added until systemd 235.
|
|
restartsCount, err := conn.GetUnitTypeProperty(unit.Name, "Service", "NRestarts")
|
|
if err != nil {
|
|
level.Debug(c.logger).Log("msg", "couldn't get unit NRestarts", "unit", unit.Name, "err", err)
|
|
} else {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.nRestartsDesc, prometheus.CounterValue,
|
|
float64(restartsCount.Value.Value().(uint32)), unit.Name)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func (c *systemdCollector) collectSockets(conn *dbus.Conn, ch chan<- prometheus.Metric, units []unit) {
|
|
for _, unit := range units {
|
|
if !strings.HasSuffix(unit.Name, ".socket") {
|
|
continue
|
|
}
|
|
|
|
acceptedConnectionCount, err := conn.GetUnitTypeProperty(unit.Name, "Socket", "NAccepted")
|
|
if err != nil {
|
|
level.Debug(c.logger).Log("msg", "couldn't get unit NAccepted", "unit", unit.Name, "err", err)
|
|
continue
|
|
}
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.socketAcceptedConnectionsDesc, prometheus.CounterValue,
|
|
float64(acceptedConnectionCount.Value.Value().(uint32)), unit.Name)
|
|
|
|
currentConnectionCount, err := conn.GetUnitTypeProperty(unit.Name, "Socket", "NConnections")
|
|
if err != nil {
|
|
level.Debug(c.logger).Log("msg", "couldn't get unit NConnections", "unit", unit.Name, "err", err)
|
|
continue
|
|
}
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.socketCurrentConnectionsDesc, prometheus.GaugeValue,
|
|
float64(currentConnectionCount.Value.Value().(uint32)), unit.Name)
|
|
|
|
// NRefused wasn't added until systemd 239.
|
|
refusedConnectionCount, err := conn.GetUnitTypeProperty(unit.Name, "Socket", "NRefused")
|
|
if err != nil {
|
|
//log.Debugf("couldn't get unit '%s' NRefused: %s", unit.Name, err)
|
|
} else {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.socketRefusedConnectionsDesc, prometheus.GaugeValue,
|
|
float64(refusedConnectionCount.Value.Value().(uint32)), unit.Name)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (c *systemdCollector) collectUnitStartTimeMetrics(conn *dbus.Conn, ch chan<- prometheus.Metric, units []unit) {
|
|
var startTimeUsec uint64
|
|
|
|
for _, unit := range units {
|
|
if unit.ActiveState != "active" {
|
|
startTimeUsec = 0
|
|
} else {
|
|
timestampValue, err := conn.GetUnitProperty(unit.Name, "ActiveEnterTimestamp")
|
|
if err != nil {
|
|
level.Debug(c.logger).Log("msg", "couldn't get unit StartTimeUsec", "unit", unit.Name, "err", err)
|
|
continue
|
|
}
|
|
startTimeUsec = timestampValue.Value.Value().(uint64)
|
|
}
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.unitStartTimeDesc, prometheus.GaugeValue,
|
|
float64(startTimeUsec)/1e6, unit.Name)
|
|
}
|
|
}
|
|
|
|
func (c *systemdCollector) collectUnitTasksMetrics(conn *dbus.Conn, ch chan<- prometheus.Metric, units []unit) {
|
|
var val uint64
|
|
for _, unit := range units {
|
|
if strings.HasSuffix(unit.Name, ".service") {
|
|
tasksCurrentCount, err := conn.GetUnitTypeProperty(unit.Name, "Service", "TasksCurrent")
|
|
if err != nil {
|
|
level.Debug(c.logger).Log("msg", "couldn't get unit TasksCurrent", "unit", unit.Name, "err", err)
|
|
} else {
|
|
val = tasksCurrentCount.Value.Value().(uint64)
|
|
// Don't set if tasksCurrent if dbus reports MaxUint64.
|
|
if val != math.MaxUint64 {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.unitTasksCurrentDesc, prometheus.GaugeValue,
|
|
float64(val), unit.Name)
|
|
}
|
|
}
|
|
tasksMaxCount, err := conn.GetUnitTypeProperty(unit.Name, "Service", "TasksMax")
|
|
if err != nil {
|
|
level.Debug(c.logger).Log("msg", "couldn't get unit TasksMax", "unit", unit.Name, "err", err)
|
|
} else {
|
|
val = tasksMaxCount.Value.Value().(uint64)
|
|
// Don't set if tasksMax if dbus reports MaxUint64.
|
|
if val != math.MaxUint64 {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.unitTasksMaxDesc, prometheus.GaugeValue,
|
|
float64(val), unit.Name)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func (c *systemdCollector) collectTimers(conn *dbus.Conn, ch chan<- prometheus.Metric, units []unit) {
|
|
for _, unit := range units {
|
|
if !strings.HasSuffix(unit.Name, ".timer") {
|
|
continue
|
|
}
|
|
|
|
lastTriggerValue, err := conn.GetUnitTypeProperty(unit.Name, "Timer", "LastTriggerUSec")
|
|
if err != nil {
|
|
level.Debug(c.logger).Log("msg", "couldn't get unit LastTriggerUSec", "unit", unit.Name, "err", err)
|
|
continue
|
|
}
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.timerLastTriggerDesc, prometheus.GaugeValue,
|
|
float64(lastTriggerValue.Value.Value().(uint64))/1e6, unit.Name)
|
|
}
|
|
}
|
|
|
|
func (c *systemdCollector) collectSummaryMetrics(ch chan<- prometheus.Metric, summary map[string]float64) {
|
|
for stateName, count := range summary {
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.summaryDesc, prometheus.GaugeValue, count, stateName)
|
|
}
|
|
}
|
|
|
|
func (c *systemdCollector) collectSystemState(conn *dbus.Conn, ch chan<- prometheus.Metric) error {
|
|
systemState, err := conn.GetManagerProperty("SystemState")
|
|
if err != nil {
|
|
return fmt.Errorf("couldn't get system state: %w", err)
|
|
}
|
|
isSystemRunning := 0.0
|
|
if systemState == `"running"` {
|
|
isSystemRunning = 1.0
|
|
}
|
|
ch <- prometheus.MustNewConstMetric(c.systemRunningDesc, prometheus.GaugeValue, isSystemRunning)
|
|
return nil
|
|
}
|
|
|
|
func newSystemdDbusConn() (*dbus.Conn, error) {
|
|
if *systemdPrivate {
|
|
return dbus.NewSystemdConnection()
|
|
}
|
|
return dbus.New()
|
|
}
|
|
|
|
type unit struct {
|
|
dbus.UnitStatus
|
|
}
|
|
|
|
func (c *systemdCollector) getAllUnits(conn *dbus.Conn) ([]unit, error) {
|
|
allUnits, err := conn.ListUnits()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
result := make([]unit, 0, len(allUnits))
|
|
for _, status := range allUnits {
|
|
unit := unit{
|
|
UnitStatus: status,
|
|
}
|
|
result = append(result, unit)
|
|
}
|
|
|
|
return result, nil
|
|
}
|
|
|
|
func summarizeUnits(units []unit) map[string]float64 {
|
|
summarized := make(map[string]float64)
|
|
|
|
for _, unitStateName := range unitStatesName {
|
|
summarized[unitStateName] = 0.0
|
|
}
|
|
|
|
for _, unit := range units {
|
|
summarized[unit.ActiveState] += 1.0
|
|
}
|
|
|
|
return summarized
|
|
}
|
|
|
|
func filterUnits(units []unit, includePattern, excludePattern *regexp.Regexp, logger log.Logger) []unit {
|
|
filtered := make([]unit, 0, len(units))
|
|
for _, unit := range units {
|
|
if includePattern.MatchString(unit.Name) && !excludePattern.MatchString(unit.Name) && unit.LoadState == "loaded" {
|
|
level.Debug(logger).Log("msg", "Adding unit", "unit", unit.Name)
|
|
filtered = append(filtered, unit)
|
|
} else {
|
|
level.Debug(logger).Log("msg", "Ignoring unit", "unit", unit.Name)
|
|
}
|
|
}
|
|
|
|
return filtered
|
|
}
|
|
|
|
func getSystemdVersion(logger log.Logger) int {
|
|
conn, err := newSystemdDbusConn()
|
|
if err != nil {
|
|
level.Warn(logger).Log("msg", "Unable to get systemd dbus connection, defaulting systemd version to 0", "err", err)
|
|
return 0
|
|
}
|
|
defer conn.Close()
|
|
version, err := conn.GetManagerProperty("Version")
|
|
if err != nil {
|
|
level.Warn(logger).Log("msg", "Unable to get systemd version property, defaulting to 0")
|
|
return 0
|
|
}
|
|
re := regexp.MustCompile(`[0-9][0-9][0-9]`)
|
|
version = re.FindString(version)
|
|
v, err := strconv.Atoi(version)
|
|
if err != nil {
|
|
level.Warn(logger).Log("msg", "Got invalid systemd version", "version", version)
|
|
return 0
|
|
}
|
|
return v
|
|
}
|