f8aa208cc0
Mmark recently became able to create manual pages. This removed the dependency on 'ronn' and just uses mmark (Go program). Re-hookup Makefile.doc to generate the correct header mmark needs to see and regenate them all. Spot checking a few pages suggest they look good and actually better than rendered with ronn, esp. lists in lists. Fixes #2757 Signed-off-by: Miek Gieben <miek@miek.nl>
138 lines
2.1 KiB
Groff
138 lines
2.1 KiB
Groff
.\" Generated by Mmark Markdown Processer - mmark.nl
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.TH "COREDNS-ERRATIC" "7" "April 2019" "CoreDNS" "CoreDNS Plugins"
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.SH ERRATIC
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.SH NAME
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.PP
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\fIerratic\fP - a plugin useful for testing client behavior.
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.SH DESCRIPTION
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.PP
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\fIerratic\fP returns a static response to all queries, but the responses can be delayed, dropped or truncated.
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The \fIerratic\fP plugin will respond to every A or AAAA query. For any other type it will return
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a SERVFAIL response. The reply for A will return 192.0.2.53 (see RFC
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5737
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\[la]https://tools.ietf.org/html/rfc5737\[ra],
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for AAAA it returns 2001:DB8::53 (see RFC 3849
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\[la]https://tools.ietf.org/html/rfc3849\[ra]) and for an
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AXFR request it will respond with a small zone transfer.
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.PP
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\fIerratic\fP can also be used in conjunction with the \fIautopath\fP plugin. This is mostly to aid in
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testing.
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.SH SYNTAX
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.PP
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.RS
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.nf
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erratic {
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drop [AMOUNT]
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truncate [AMOUNT]
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delay [AMOUNT [DURATION]]
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}
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.fi
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.RE
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.IP \(bu 4
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\fB\fCdrop\fR: drop 1 per \fBAMOUNT\fP of queries, the default is 2.
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.IP \(bu 4
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\fB\fCtruncate\fR: truncate 1 per \fBAMOUNT\fP of queries, the default is 2.
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.IP \(bu 4
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\fB\fCdelay\fR: delay 1 per \fBAMOUNT\fP of queries for \fBDURATION\fP, the default for \fBAMOUNT\fP is 2 and
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the default for \fBDURATION\fP is 100ms.
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.PP
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In case of a zone transfer and truncate the final SOA record \fIisn't\fP added to the response.
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.SH READY
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.PP
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This plugin reports readiness to the ready plugin.
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.SH EXAMPLES
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.PP
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.RS
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.nf
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\&. {
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erratic {
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drop 3
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}
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}
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.fi
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.RE
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.PP
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Or even shorter if the defaults suits you. Note this only drops queries, it does not delay them.
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.PP
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.RS
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.nf
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\&. {
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erratic
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}
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.fi
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.RE
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.PP
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Delay 1 in 3 queries for 50ms
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.PP
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.RS
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.nf
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\&. {
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erratic {
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delay 3 50ms
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}
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}
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.fi
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.RE
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.PP
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Delay 1 in 3 and truncate 1 in 5.
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.PP
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.RS
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.nf
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\&. {
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erratic {
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delay 3 5ms
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truncate 5
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}
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}
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.fi
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.RE
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.PP
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Drop every second query.
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.PP
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.RS
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.nf
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\&. {
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erratic {
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drop 2
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truncate 2
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}
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}
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.fi
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.RE
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.SH ALSO SEE
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.PP
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RFC 3849
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\[la]https://tools.ietf.org/html/rfc3849\[ra] and
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RFC 5737
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\[la]https://tools.ietf.org/html/rfc5737\[ra].
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