Kiu/Node_Exporter
Kiu/Node_Exporter
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Merge pull request #230 from prometheus/remove-lastlogin

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Remove lastlogin collector.
This commit is contained in:
Tobias Schmidt 2016-04-24 19:45:02 -04:00
commit 7c97b784d6
2 changed files with 0 additions and 113 deletions
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1
README.md
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@ -44,7 +44,6 @@ gmond | Exposes statistics from Ganglia. | _any_
interrupts | Exposes detailed interrupts statistics. | Linux, OpenBSD
ipvs | Exposes IPVS status from `/proc/net/ip_vs` and stats from `/proc/net/ip_vs_stats`. | Linux
ksmd | Exposes kernel and system statistics from `/sys/kernel/mm/ksm`. | Linux
lastlogin | Exposes the last time there was a login. | _any_
logind | Exposes session counts from [logind](http://www.freedesktop.org/wiki/Software/systemd/logind/). | Linux
megacli | Exposes RAID statistics from MegaCLI. | Linux
meminfo_numa | Exposes memory statistics from `/proc/meminfo_numa`. | Linux

112
collector/lastlogin_linux.go
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@ -1,112 +0,0 @@
// 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.
// +build !nolastlogin
package collector
import (
"bufio"
"fmt"
"io"
"os/exec"
"strings"
"time"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/common/log"
)
const lastLoginSubsystem = "last_login"
type lastLoginCollector struct {
metric prometheus.Gauge
}
func init() {
Factories["lastlogin"] = NewLastLoginCollector
}
// Takes a prometheus registry and returns a new Collector exposing
// load, seconds since last login and a list of tags as specified by config.
func NewLastLoginCollector() (Collector, error) {
return &lastLoginCollector{
metric: prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: Namespace,
Subsystem: lastLoginSubsystem,
Name: "time",
Help: "The time of the last login.",
}),
}, nil
}
func (c *lastLoginCollector) Update(ch chan<- prometheus.Metric) (err error) {
last, err := getLastLoginTime()
if err != nil {
return fmt.Errorf("couldn't get last seen: %s", err)
}
log.Debugf("Set node_last_login_time: %f", last)
c.metric.Set(last)
c.metric.Collect(ch)
return err
}
func getLastLoginTime() (float64, error) {
who := exec.Command("who", "/var/log/wtmp", "-l", "-u", "-s")
output, err := who.StdoutPipe()
if err != nil {
return 0, err
}
err = who.Start()
if err != nil {
return 0, err
}
reader := bufio.NewReader(output)
var last time.Time
for {
line, isPrefix, err := reader.ReadLine()
if err == io.EOF {
break
}
if isPrefix {
return 0, fmt.Errorf("line to long: %s(...)", line)
}
fields := strings.Fields(string(line))
lastDate := fields[2]
lastTime := fields[3]
dateParts, err := splitToInts(lastDate, "-") // 2013-04-16
if err != nil {
return 0, fmt.Errorf("couldn't parse date in line '%s': %s", fields, err)
}
timeParts, err := splitToInts(lastTime, ":") // 11:33
if err != nil {
return 0, fmt.Errorf("couldn't parse time in line '%s': %s", fields, err)
}
last_t := time.Date(dateParts[0], time.Month(dateParts[1]), dateParts[2], timeParts[0], timeParts[1], 0, 0, time.UTC)
last = last_t
}
err = who.Wait()
if err != nil {
return 0, err
}
return float64(last.Unix()), nil
}