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kube-state-metrics
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don't panic when requesting help (#42)

This commit is contained in:
Frederic Branczyk 2016-10-17 15:32:29 +02:00 committed by Fabian Reinartz
parent 31e5223604
commit 67bf6b9c09
1 changed files with 18 additions and 4 deletions
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22
main.go
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@ -46,20 +46,34 @@ const (
) )
var ( var (
flags = flag.NewFlagSet("", flag.ContinueOnError) flags = flag.NewFlagSet("", flag.ExitOnError)
inCluster = flags.Bool("in-cluster", true, `If true, use the built in kubernetes inCluster = flags.Bool("in-cluster", true, `If true, use the built in kubernetes cluster for creating the client`)
cluster for creating the client`)
apiserver = flags.String("apiserver", "", `The URL of the apiserver to use as a master`) apiserver = flags.String("apiserver", "", `The URL of the apiserver to use as a master`)
kubeconfig = flags.String("kubeconfig", "./config", "absolute path to the kubeconfig file") kubeconfig = flags.String("kubeconfig", "./config", "absolute path to the kubeconfig file")
help = flags.BoolP("help", "h", false, "Print help text")
port = flags.Int("port", 80, `Port to expose metrics on.`) port = flags.Int("port", 80, `Port to expose metrics on.`)
) )
func main() { func main() {
flags.Parse(os.Args) flags.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
flags.PrintDefaults()
}
err := flags.Parse(os.Args)
if err != nil {
glog.Fatalf("Error: %s", err)
}
if *help {
flags.Usage()
os.Exit(0)
}
if *apiserver == "" && !(*inCluster) { if *apiserver == "" && !(*inCluster) {
glog.Fatalf("--apiserver not set and --in-cluster is false; apiserver must be set to a valid URL") glog.Fatalf("--apiserver not set and --in-cluster is false; apiserver must be set to a valid URL")