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lib/httpserver: add handler to serve /robots.txt and deny search indexing (#4143)

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This handler will instruct search engines that indexing is not allowed for the content exposed to the internet. This should help to address issues like #4128 when instances are exposed to the internet without authentication.
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Zakhar Bessarab 2023-04-18 16:47:26 +04:00 committed by Aliaksandr Valialkin
parent 1103f36c6e
commit 2ca92aaa34
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2
docs/CHANGELOG.md
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@ -15,6 +15,8 @@ The following tip changes can be tested by building VictoriaMetrics components f
## v1.79.x long-time support release (LTS)
* SECURITY: serve `/robots.txt` content to disallow indexing of the exposed instances by search engines. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4128) for details.
## [v1.79.12](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.79.12)
Released at 2023-04-06

5
lib/httpserver/httpserver.go
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@ -316,6 +316,11 @@ func handlerWrapper(s *server, w http.ResponseWriter, r *http.Request, rh Reques
// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1833
fmt.Fprintf(w, "VictoriaMetrics is Ready.\n")
return
case "/robots.txt":
// This prevents search engines from indexing contents
// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4128
fmt.Fprintf(w, "User-agent: *\nDisallow: /\n")
return
default:
if strings.HasPrefix(r.URL.Path, "/debug/pprof/") {
pprofRequests.Inc()