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Split native collector into it's component parts and make them enablable.

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Last login is disabled by default as it's broken on ubuntu 12.04
Interrupts is disabled by default as it's very granular and we'll have total interrupts from /proc/stat

Allow ignoring devices from diskstats, ignore ram and loop devices by default.

Use glog for logging.
This commit is contained in:
Brian Brazil 2014-06-04 12:12:34 +01:00
commit 25ea90369c
14 changed files with 747 additions and 516 deletions
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13
collector/gmond_collector.go
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@ -11,6 +11,7 @@ import (
"regexp"
"time"
"github.com/golang/glog"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/node_exporter/collector/ganglia"
)
@ -23,14 +24,13 @@ const (
)
type gmondCollector struct {
name string
Metrics map[string]prometheus.Gauge
config Config
registry prometheus.Registry
}
func init() {
Factories = append(Factories, NewGmondCollector)
Factories["gmond"] = NewGmondCollector
}
var illegalCharsRE = regexp.MustCompile(`[^a-zA-Z0-9_]`)
@ -38,7 +38,6 @@ var illegalCharsRE = regexp.MustCompile(`[^a-zA-Z0-9_]`)
// Takes a config struct and prometheus registry and returns a new Collector scraping ganglia.
func NewGmondCollector(config Config, registry prometheus.Registry) (Collector, error) {
c := gmondCollector{
name: "gmond_collector",
config: config,
Metrics: make(map[string]prometheus.Gauge),
registry: registry,
@ -47,8 +46,6 @@ func NewGmondCollector(config Config, registry prometheus.Registry) (Collector,
return &c, nil
}
func (c *gmondCollector) Name() string { return c.name }
func (c *gmondCollector) setMetric(name string, labels map[string]string, metric ganglia.Metric) {
if _, ok := c.Metrics[name]; !ok {
var desc string
@ -64,18 +61,18 @@ func (c *gmondCollector) setMetric(name string, labels map[string]string, metric
break
}
}
debug(c.Name(), "Register %s: %s", name, desc)
glog.V(1).Infof("Register %s: %s", name, desc)
gauge := prometheus.NewGauge()
c.Metrics[name] = gauge
c.registry.Register(name, desc, prometheus.NilLabels, gauge) // one gauge per metric!
}
debug(c.Name(), "Set %s{%s}: %f", name, labels, metric.Value)
glog.V(1).Infof("Set %s{%s}: %f", name, labels, metric.Value)
c.Metrics[name].Set(labels, metric.Value)
}
func (c *gmondCollector) Update() (updates int, err error) {
conn, err := net.Dial(gangliaProto, gangliaAddress)
debug(c.Name(), "gmondCollector Update")
glog.V(1).Infof("gmondCollector Update")
if err != nil {
return updates, fmt.Errorf("Can't connect to gmond: %s", err)
}