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app/vmagent: print brief usage info for vmagent -help

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This commit is contained in:
Aliaksandr Valialkin 2020-06-05 10:37:36 +03:00
parent 4fd3f6f991
commit 05ae1472e3
1 changed files with 13 additions and 0 deletions
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13
app/vmagent/main.go
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@ -54,6 +54,7 @@ var (
func main() { func main() {
// Write flags and help message to stdout, since it is easier to grep or pipe. // Write flags and help message to stdout, since it is easier to grep or pipe.
flag.CommandLine.SetOutput(os.Stdout) flag.CommandLine.SetOutput(os.Stdout)
flag.Usage = usage
envflag.Parse() envflag.Parse()
buildinfo.Init() buildinfo.Init()
logger.Init() logger.Init()
@ -205,3 +206,15 @@ var (
promscrapeConfigReloadRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/-/reload"}`) promscrapeConfigReloadRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/-/reload"}`)
) )
func usage() {
const s = `
vmagent collects metrics data via popular data ingestion protocols and routes it to VictoriaMetrics.
See the docs at https://github.com/VictoriaMetrics/VictoriaMetrics/blob/master/app/vmagent/README.md .
`
f := flag.CommandLine.Output()
fmt.Fprintf(f, "%s\n", s)
flag.PrintDefaults()
}