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Commit 666db69c authored by Thomas Schneider's avatar Thomas Schneider Committed by Thomas Schneider
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Initial import

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needrestart2prom
needrestart2prom-*
*.prom
### https://github.com/github/gitignore/raw/master/Go.gitignore
# Binaries for programs and plugins
*.exe
*.exe~
*.dll
*.so
*.dylib
# Test binary, built with `go test -c`
*.test
# Output of the go coverage tool, specifically when used with LiteIDE
*.out
# Dependency directories (remove the comment below to include it)
# vendor/
LICENCE 0 → 100644
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DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
Version 2, December 2004
Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
Everyone is permitted to copy and distribute verbatim or modified
copies of this license document, and changing it is allowed as long
as the name is changed.
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. You just DO WHAT THE FUCK YOU WANT TO.
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# needrestart2prom
This converts [`needrestart`](https://fiasko.io/tag/needrestart.html) output to
Prometheus metrics. It is intended to be used alongside `node_exporter` as a
textfile writer.
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module git.fsmpi.rwth-aachen.de/thomas/needrestart2prom
go 1.16
require github.com/prometheus/client_golang v1.11.0
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google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.26.0-rc.1 h1:7QnIQpGRHE5RnLKnESfDoxm2dTapTZua5a0kS0A+VXQ=
google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
needrestart2prom.go 0 → 100644
+ 142
− 0
View file @ 666db69c
// SPDX-License-Identifier: WTFPL
package main
import (
"errors"
"flag"
"fmt"
"log"
"os/exec"
"strconv"
"strings"
"github.com/prometheus/client_golang/prometheus"
)
var (
fOut = flag.String("outfile", "needrestart.prom", "textfile output")
fNeedrestart = flag.String("needrestart", "needrestart", "needrestart executable name/path")
registry = prometheus.NewRegistry()
)
func wrap(err error, text string) error {
return fmt.Errorf("%s: %w", text, err)
}
func registerMetrics(needrestart string, registry prometheus.Registerer) (err error) {
// batch mode, returns output suitable for processing
output, err := exec.Command(needrestart, "-b").Output()
if err != nil {
err = wrap(err, "running needrestart")
return
}
services := prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: "node",
Subsystem: "needrestart",
Name: "service",
Help: "Service status",
}, []string{"name"})
version := prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: "node",
Subsystem: "needrestart",
Name: "version",
Help: "needrestart version as label",
}, []string{"version"})
kernel_status := prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: "node",
Subsystem: "needrestart",
Name: "kernel_status",
Help: "Kernel upgrade status",
})
ucode_status := prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: "node",
Subsystem: "needrestart",
Name: "microcode_status",
Help: "CPU microcode upgrade status",
})
lines := strings.Split(string(output), "\n")
for _, l := range lines {
if l == "" {
continue
}
parts := strings.Split(l, ": ")
typ := strings.Split(parts[0], "-")
if len(parts) != 2 || len(typ) != 2 {
err = errors.New("failure parsing needrestart output")
return
}
value := parts[1]
if typ[0] != "NEEDRESTART" {
continue
}
switch typ[1] {
case "VER":
// version
version.WithLabelValues(value).Set(1)
break
case "PID":
// process IDs in user mode, pretty useless for us
continue
case "KCUR":
case "KEXP":
// current and expected kernel versions, we only care
// for the status
continue
case "KSTA":
// kernel status
status, err := strconv.ParseFloat(value, 64)
if err != nil {
err = wrap(err, "parsing needrestart KSTA output")
return err
}
kernel_status.Set(status)
registry.MustRegister(kernel_status)
break
case "UCCUR":
case "UCEXP":
// current and expected microcode versions, we only care
// for the status
continue
case "UCSTA":
// microcode status
status, err := strconv.ParseFloat(value, 64)
if err != nil {
err = wrap(err, "parsing needrestart UCSTA output")
return err
}
ucode_status.Set(status)
registry.MustRegister(ucode_status)
break
case "SVC":
// service
services.WithLabelValues(value).Set(1)
break
case "CONT":
// container
}
}
registry.MustRegister(services, version)
return
}
func main() {
flag.Parse()
err := registerMetrics(*fNeedrestart, registry)
if err != nil {
log.Fatal(err)
}
err = prometheus.WriteToTextfile(*fOut, registry)
if err != nil {
log.Fatal(err)
}
}
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