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app/vmauth: properly pass Host header to backends

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Previously the `Host` header was remained unchanged when passing it in requests to backends.
This may improperly work if the backend uses host-based routing.

While at it, allows http/2.0 requests to backends. While VictoriaMetrics components
do not accept http/2.0 requests, other backends can require such requests.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5240
This commit is contained in:
Aliaksandr Valialkin 2023-11-13 09:02:49 +01:00
parent 78bc816220
commit b9aba7edfb
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2 changed files with 2 additions and 2 deletions
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3
app/vmauth/main.go
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@ -218,6 +218,7 @@ func tryProcessingRequest(w http.ResponseWriter, r *http.Request, targetURL *url
// This code has been copied from net/http/httputil/reverseproxy.go
req := sanitizeRequestHeaders(r)
req.URL = targetURL
req.Host = targetURL.Host
updateHeadersByConfig(req.Header, hc.RequestHeaders)
res, err := transport.RoundTrip(req)
rtb, rtbOK := req.Body.(*readTrackingBody)
@ -407,8 +408,6 @@ func newTransport(insecureSkipVerify bool, caFile string) (*http.Transport, erro
tr.ResponseHeaderTimeout = *responseTimeout
// Automatic compression must be disabled in order to fix https://github.com/VictoriaMetrics/VictoriaMetrics/issues/535
tr.DisableCompression = true
// Disable HTTP/2.0, since VictoriaMetrics components don't support HTTP/2.0 (because there is no sense in this).
tr.ForceAttemptHTTP2 = false
tr.MaxIdleConnsPerHost = *maxIdleConnsPerBackend
if tr.MaxIdleConns != 0 && tr.MaxIdleConns < tr.MaxIdleConnsPerHost {
tr.MaxIdleConns = tr.MaxIdleConnsPerHost

1
docs/CHANGELOG.md
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@ -106,6 +106,7 @@ The sandbox cluster installation is running under the constant load generated by
* BUGFIX: [vmstorage](https://docs.victoriametrics.com/Cluster-VictoriaMetrics.html): prevent deleted series to be searchable via `/api/v1/series` API if they were re-ingested with staleness markers. This situation could happen if user deletes the series from the target and from VM, and then vmagent sends stale markers for absent series. Thanks to @ilyatrefilov for the [issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5069) and [pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/5174).
* BUGFIX: [vmstorage](https://docs.victoriametrics.com/Cluster-VictoriaMetrics.html): log warning about switching to ReadOnly mode only on state change. Before, vmstorage would log this warning every 1s. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5159) for details.
* BUGFIX: [vmauth](https://docs.victoriametrics.com/vmauth.html): show browser authorization window for unauthorized requests to unsupported paths if the `unauthorized_user` section is specified. This allows properly authorizing the user. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5236) for details.
* BUGFIX: [vmauth](https://docs.victoriametrics.com/vmauth.html): properly proxy requests to HTTP/2.0 backends and properly pass `Host` header to backends.
* BUGFIX: [vmui](https://docs.victoriametrics.com/#vmui): fix the `Disable cache` toggle at `JSON` and `Table` views. Previously response caching was always enabled and couldn't be disabled at these views.
* BUGFIX: [vmui](https://docs.victoriametrics.com/#vmui): correctly display query errors on [Explore Prometheus Metrics](https://docs.victoriametrics.com/#metrics-explorer) page. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5202) for details.
* BUGFIX: [vmbackupmanager](https://docs.victoriametrics.com/vmbackupmanager.html): correctly print error in logs when copying backup fails. Previously, error was displayed in metrics but was missing in logs.