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lib/promauth: properly set Host header in requests to scrape targets.

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The `Host` header must be set via net/http.Request.Host field, since net/http.Client
ignores this header if it is set via Request.Header.Set().

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5969
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/pull/5970
This commit is contained in:
Aliaksandr Valialkin 2024-03-17 20:19:23 +02:00
parent 5f9fb58dde
commit b577413d3b
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2 changed files with 8 additions and 2 deletions
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1
docs/CHANGELOG.md
View file

@ -52,6 +52,7 @@ See also [LTS releases](https://docs.victoriametrics.com/lts-releases/).
* FEATURE: [vmctl](https://docs.victoriametrics.com/vmctl.html): support client-side TLS configuration for [native protocol](https://docs.victoriametrics.com/vmctl/#migrating-data-from-victoriametrics). See [this feature request](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5748). Thanks to @khushijain21 for the [pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/5824).
* FEATURE: [vmctl](https://docs.victoriametrics.com/vmctl.html): support client-side TLS configuration for VictoriaMetrics destination specified via `--vm-*` cmd-line flags used in [InfluxDB](https://docs.victoriametrics.com/vmctl/#migrating-data-from-influxdb-1x), [Remote Read protocol](https://docs.victoriametrics.com/vmctl/#migrating-data-by-remote-read-protocol), [OpenTSDB](https://docs.victoriametrics.com/vmctl/#migrating-data-from-opentsdb), [Prometheus](https://docs.victoriametrics.com/vmctl/#migrating-data-from-prometheus) and [Promscale](https://docs.victoriametrics.com/vmctl/#migrating-data-from-promscale) migration modes.
* BUGFIX: [vmagent](https://docs.victoriametrics.com/vmagent.html): properly set `Host` header in requests to scrape targets if it is specified via [`headers` option](https://docs.victoriametrics.com/sd_configs/#http-api-client-options). Thanks to @fholzer for [the bugreport](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5969) and [the fix](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/5970).
* BUGFIX: do not drop `match[]` filter at [`/api/v1/series`](https://docs.victoriametrics.com/url-examples/#apiv1series) if `-search.ignoreExtraFiltersAtLabelsAPI` command-line flag is set, since missing `match[]` filter breaks `/api/v1/series` requests.
* BUGFIX: [stream aggregation](https://docs.victoriametrics.com/stream-aggregation/): take into account sample timestamp during [deduplication](https://docs.victoriametrics.com/stream-aggregation/#deduplication). If multiple samples have the same timestamp on the configured deduplication interval, then the sample with the biggest value is kept. The logic is aligned with [`-dedup.minScrapeInterval`](https://docs.victoriametrics.com/#deduplication).
* BUGFIX: [vmctl](https://docs.victoriametrics.com/vmctl.html): properly parse TLS key and CA files for [InfluxDB](https://docs.victoriametrics.com/vmctl/#migrating-data-from-influxdb-1x) and [OpenTSDB](https://docs.victoriametrics.com/vmctl/#migrating-data-from-opentsdb) migration modes.

9
lib/promauth/config.go
View file

@ -307,7 +307,7 @@ func parseHeaders(headers []string) ([]keyValue, error) {
return nil, fmt.Errorf(`missing ':' in header %q; expecting "key: value" format`, h)
}
kv := &kvs[i]
kv.key = strings.TrimSpace(h[:n])
kv.key = http.CanonicalHeaderKey(strings.TrimSpace(h[:n]))
kv.value = strings.TrimSpace(h[n+1:])
}
return kvs, nil
@ -335,7 +335,12 @@ func (ac *Config) SetHeaders(req *http.Request, setAuthHeader bool) error {
}
reqHeaders := req.Header
for _, h := range ac.headers {
reqHeaders.Set(h.key, h.value)
if h.key == "Host" {
// Host header must be set via req.Host - see https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5969
req.Host = h.value
} else {
reqHeaders.Set(h.key, h.value)
}
}
if setAuthHeader {
ah, err := ac.GetAuthHeader()