Merge pull request #64 from prometheus/document-logging
Document logging
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commit
cb125472c5
1
Makefile
1
Makefile
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@ -13,5 +13,6 @@
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VERSION := 0.8.0
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VERSION := 0.8.0
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TARGET := node_exporter
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TARGET := node_exporter
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GOFLAGS := -ldflags "-X main.Version $(VERSION)"
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include Makefile.COMMON
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include Makefile.COMMON
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@ -10,6 +10,12 @@ collectors.
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make
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make
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./node_exporter <flags>
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./node_exporter <flags>
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The node_exporter uses the [glog][glog] library for logging. With the default
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parameters, nothing will be logged. Use `-logtostderr` to enable logging to
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stderr and `--help` to see more options about logging.
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[glog]: https://godoc.org/github.com/golang/glog
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## Running tests
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## Running tests
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make test
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make test
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@ -22,6 +22,9 @@ import (
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const subsystem = "exporter"
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const subsystem = "exporter"
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var (
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var (
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// set at build time
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Version = "0.0.0.dev"
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configFile = flag.String("config.file", "", "Path to config file.")
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configFile = flag.String("config.file", "", "Path to config file.")
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memProfile = flag.String("debug.memprofile-file", "", "Write memory profile to this file upon receipt of SIGUSR1.")
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memProfile = flag.String("debug.memprofile-file", "", "Write memory profile to this file upon receipt of SIGUSR1.")
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listenAddress = flag.String("web.listen-address", ":9100", "Address on which to expose metrics and web interface.")
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listenAddress = flag.String("web.listen-address", ":9100", "Address on which to expose metrics and web interface.")
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@ -137,6 +140,7 @@ func loadCollectors(file string) (map[string]collector.Collector, error) {
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func main() {
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func main() {
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flag.Parse()
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flag.Parse()
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if *printCollectors {
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if *printCollectors {
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fmt.Printf("Available collectors:\n")
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fmt.Printf("Available collectors:\n")
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for n, _ := range collector.Factories {
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for n, _ := range collector.Factories {
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@ -182,6 +186,8 @@ func main() {
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</body>
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</body>
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</html>`))
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</html>`))
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})
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})
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glog.Infof("Starting node_exporter v%s at %s", Version, *listenAddress)
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err = http.ListenAndServe(*listenAddress, nil)
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err = http.ListenAndServe(*listenAddress, nil)
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if err != nil {
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if err != nil {
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glog.Fatal(err)
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glog.Fatal(err)
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