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sastorsl
Asked: 2020-09-16 04:39:57 +0800 CST

HAProxy add HTTP response headers to the stats pages

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Is it possible to somehow add arbitrary HTTP response headers to the "stats" pages in HAProxy? haproxy version 1.7.x.

Regular stats setup:

listen view
    bind *:10002
    stats enable
    stats uri /
    stats hide-version

Customizing and trying to add headers makes no difference.

This does not work, i.e. no X-Frame-Options header is added to the response:

listen view
    bind *:10002
    rspadd X-Frame-Options:\ SAMEORIGIN
    stats enable
    stats uri /
    stats hide-version

Nor does this work:

listen view
    bind *:10002
    http-response set-header X-Frame-Options SAMEORIGIN
    stats enable
    stats uri /
    stats hide-version

The exact same parameters in a "regular" listen block works like a charm.

haproxy

1 Answers

  1. Best Answer

    stats apparently aren't processed by http code, so http-request don't work. It even has its own stats http-request with very limited functionality (https://cbonte.github.io/haproxy-dconv/1.7/configuration.html#4.2-stats%20http-request).

    Putting proxy in front of it should work:

    frontend stats
        bind *:1936
        http-response set-header test test
        use_backend stats

backend stats
        server foobar 127.0.0.1:1937

listen realstats
        bind 127.0.0.1:1937
        stats enable
        stats uri /
        stats hide-version

    Tested on haproxy 2.1, by it should work for 1.7 as well.

    • 2