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app/vmagent: follow-up after 6788704152

Browse source 
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4884
Signed-off-by: hagen1778 <roman@victoriametrics.com>
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hagen1778 2023-08-24 11:36:42 +02:00 committed by Aliaksandr Valialkin
parent 3f33f9ce6f
commit 6489dc387c
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GPG key ID: A72BEC6CD3D0DED1
2 changed files with 7 additions and 4 deletions
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1
docs/CHANGELOG.md
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@ -26,6 +26,7 @@ The following `tip` changes can be tested by building VictoriaMetrics components
* BUGFIX: [vmalert](https://docs.victoriametrics.com/vmalert.html): correctly re-use HTTP request object on `EOF` retries when querying the configured datasource. Previously, there was a small chance that query retry wouldn't succeed.
* BUGFIX: [vmagent](https://docs.victoriametrics.com/vmagent.html): consistently set UserAgent header to `vm_promscrape` during scraping with enabled or disabled `promscrape.streamParse`. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4884) for details.
## [v1.93.1](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.93.1)

10
lib/promscrape/client.go
View file

@ -79,6 +79,8 @@ func concatTwoStrings(x, y string) string {
return s
}
const scrapeUserAgent = "vm_promscrape"
func newClient(ctx context.Context, sw *ScrapeWork) *client {
var u fasthttp.URI
u.Update(sw.ScrapeURL)
@ -120,8 +122,9 @@ func newClient(ctx context.Context, sw *ScrapeWork) *client {
logger.Fatalf("cannot create dial func: %s", err)
}
hc := &fasthttp.HostClient{
Addr: dialAddr,
Name: "vm_promscrape",
Addr: dialAddr,
// Name used in User-Agent request header
Name: scrapeUserAgent,
Dial: dialFunc,
IsTLS: isTLS,
TLSConfig: tlsCfg,
@ -201,8 +204,7 @@ func (c *client) GetStreamReader() (*streamReader, error) {
// Set X-Prometheus-Scrape-Timeout-Seconds like Prometheus does, since it is used by some exporters such as PushProx.
// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1179#issuecomment-813117162
req.Header.Set("X-Prometheus-Scrape-Timeout-Seconds", c.scrapeTimeoutSecondsStr)
// Set same useragent as fasthttp.HostClient at c.hc uses for scraping
req.Header.Set("User-Agent", "vm_promscrape")
req.Header.Set("User-Agent", scrapeUserAgent)
c.setHeaders(req)
c.setProxyHeaders(req)
scrapeRequests.Inc()