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Merge pull request #852 from prometheus/remove-gmond 

Remove gmond collector
This commit is contained in:
Ben Kochie 2018-04-27 10:02:16 +02:00 committed by GitHub
parent bab8445f8c fd66a86a30
commit 361b5bf85d
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8
README.md
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@ -75,14 +75,6 @@ supervisord | Exposes service status from [supervisord](http://supervisord.org/)
systemd | Exposes service and system status from [systemd](http://www.freedesktop.org/wiki/Software/systemd/). | Linux systemd | Exposes service and system status from [systemd](http://www.freedesktop.org/wiki/Software/systemd/). | Linux
tcpstat | Exposes TCP connection status information from `/proc/net/tcp` and `/proc/net/tcp6`. (Warning: the current version has potential performance issues in high load situations.) | Linux tcpstat | Exposes TCP connection status information from `/proc/net/tcp` and `/proc/net/tcp6`. (Warning: the current version has potential performance issues in high load situations.) | Linux
### Deprecated
*These collectors will be (re)moved in the future.*
Name | Description | OS
---------|-------------|----
gmond | Exposes statistics from Ganglia. | _any_
### Textfile Collector ### Textfile Collector
The textfile collector is similar to the [Pushgateway](https://github.com/prometheus/pushgateway), The textfile collector is similar to the [Pushgateway](https://github.com/prometheus/pushgateway),

80
collector/ganglia/format.go
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@ -1,80 +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.
// Package ganglia provides types for unmarshalling gmond's XML output.
//
// Not used elements in gmond's XML output are commented.
// In case you want to use them, please change the names so that one
// can understand without needing to know what the acronym stands for.
package ganglia
import "encoding/xml"
// ExtraElement describes EXTRA_ELEMENT elements.
type ExtraElement struct {
Name string `xml:"NAME,attr"`
Val string `xml:"VAL,attr"`
}
// ExtraData describes EXTRA_DATA elements.
type ExtraData struct {
ExtraElements []ExtraElement `xml:"EXTRA_ELEMENT"`
}
// Metric describes METRIC elements.
type Metric struct {
Name string `xml:"NAME,attr"`
Value float64 `xml:"VAL,attr"`
/*
Unit string `xml:"UNITS,attr"`
Slope string `xml:"SLOPE,attr"`
Tn int `xml:"TN,attr"`
Tmax int `xml:"TMAX,attr"`
Dmax int `xml:"DMAX,attr"`
*/
ExtraData ExtraData `xml:"EXTRA_DATA"`
}
// Host describes HOST elements.
type Host struct {
Name string `xml:"NAME,attr"`
/*
Ip string `xml:"IP,attr"`
Tags string `xml:"TAGS,attr"`
Reported int `xml:"REPORTED,attr"`
Tn int `xml:"TN,attr"`
Tmax int `xml:"TMAX,attr"`
Dmax int `xml:"DMAX,attr"`
Location string `xml:"LOCATION,attr"`
GmondStarted int `xml:"GMOND_STARTED",attr"`
*/
Metrics []Metric `xml:"METRIC"`
}
// Cluster describes CLUSTER elements.
type Cluster struct {
Name string `xml:"NAME,attr"`
/*
Owner string `xml:"OWNER,attr"`
LatLong string `xml:"LATLONG,attr"`
Url string `xml:"URL,attr"`
Localtime int `xml:"LOCALTIME,attr"`
*/
Hosts []Host `xml:"HOST"`
}
// Ganglia describes the top-level XML structure.
type Ganglia struct {
XMLNAME xml.Name `xml:"GANGLIA_XML"`
Clusters []Cluster `xml:"CLUSTER"`
}

123
collector/gmond.go
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@ -1,123 +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 !nogmond
package collector
import (
"bufio"
"encoding/xml"
"fmt"
"io"
"net"
"regexp"
"time"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/common/log"
"github.com/prometheus/node_exporter/collector/ganglia"
)
const (
gangliaAddress = "127.0.0.1:8649"
gangliaProto = "tcp"
gangliaTimeout = 30 * time.Second
gangliaNamespace = "ganglia"
)
type gmondCollector struct {
metrics map[string]*prometheus.GaugeVec
}
func init() {
registerCollector("gmond", defaultDisabled, NewGmondCollector)
}
var illegalCharsRE = regexp.MustCompile(`[^a-zA-Z0-9_]`)
// NewGmondCollector returns a new Collector scraping ganglia.
func NewGmondCollector() (Collector, error) {
warnDeprecated("gmond")
c := gmondCollector{
metrics: map[string]*prometheus.GaugeVec{},
}
return &c, nil
}
func (c *gmondCollector) Update(ch chan<- prometheus.Metric) error {
conn, err := net.Dial(gangliaProto, gangliaAddress)
log.Debugf("gmondCollector Update")
if err != nil {
return fmt.Errorf("can't connect to gmond: %s", err)
}
conn.SetDeadline(time.Now().Add(gangliaTimeout))
ganglia := ganglia.Ganglia{}
decoder := xml.NewDecoder(bufio.NewReader(conn))
decoder.CharsetReader = toUtf8
err = decoder.Decode(&ganglia)
if err != nil {
return fmt.Errorf("couldn't parse xml: %s", err)
}
for _, cluster := range ganglia.Clusters {
for _, host := range cluster.Hosts {
for _, metric := range host.Metrics {
name := illegalCharsRE.ReplaceAllString(metric.Name, "_")
c.setMetric(name, cluster.Name, metric)
}
}
}
for _, m := range c.metrics {
m.Collect(ch)
}
return err
}
func (c *gmondCollector) setMetric(name, cluster string, metric ganglia.Metric) {
if _, ok := c.metrics[name]; !ok {
var desc string
var title string
for _, element := range metric.ExtraData.ExtraElements {
switch element.Name {
case "DESC":
desc = element.Val
case "TITLE":
title = element.Val
}
if title != "" && desc != "" {
break
}
}
log.Debugf("Register %s: %s", name, desc)
c.metrics[name] = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: gangliaNamespace,
Name: name,
Help: desc,
},
[]string{"cluster"},
)
}
log.Debugf("Set %s{cluster=%q}: %f", name, cluster, metric.Value)
c.metrics[name].WithLabelValues(cluster).Set(metric.Value)
}
func toUtf8(charset string, input io.Reader) (io.Reader, error) {
return input, nil //FIXME
}