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feat(vmagent): add promscrap config reload suppport via http (#450)

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* feat(vmagent): add promscrap config reload suppport via http endpoint `/-/reload`

* fix: typo fix
This commit is contained in:
DexterZhang 2020-04-30 07:00:32 +08:00 committed by Aliaksandr Valialkin
parent d99f48aa48
commit ae215e5538
1 changed files with 13 additions and 0 deletions
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13
app/vmagent/main.go
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@ -5,6 +5,7 @@ import (
"fmt"
"net/http"
"strings"
"syscall"
"time"
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/csvimport"
@ -157,6 +158,15 @@ func requestHandler(w http.ResponseWriter, r *http.Request) bool {
w.Header().Set("Content-Type", "text/plain")
promscrape.WriteHumanReadableTargetsStatus(w)
return true
case "/-/reload":
promscrapeConfigReloadRequests.Inc()
if err := syscall.Kill(syscall.Getpid(), syscall.SIGHUP); err != nil {
promscrapeConfigReloadErrors.Inc()
httpserver.Errorf(w, "Fail to reload config file, %s", err)
return true
}
w.WriteHeader(http.StatusNoContent)
return true
}
return false
}
@ -177,4 +187,7 @@ var (
influxQueryRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/query", protocol="influx"}`)
promscrapeTargetsRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/targets"}`)
promscrapeConfigReloadRequests = metrics.NewCounter(`vmagent_http_requests_total{path="/-/reload"}`)
promscrapeConfigReloadErrors = metrics.NewCounter(`vmagent_http_request_errors_total{path="/-/reload"}`)
)