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62317c3c14
Update all documentation in the tree to use example.org as an example configuration (in so far possible). As to get out of the just use "." and fallthrough and things would be fine. Signed-off-by: Miek Gieben <miek@miek.nl>
93 lines
1.8 KiB
Markdown
93 lines
1.8 KiB
Markdown
# erratic
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## Name
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*erratic* - a plugin useful for testing client behavior.
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## Description
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*erratic* returns a static response to all queries, but the responses can be delayed, dropped or truncated.
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The *erratic* 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](https://tools.ietf.org/html/rfc5737),
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for AAAA it returns 2001:DB8::53 (see [RFC 3849](https://tools.ietf.org/html/rfc3849)) and for an
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AXFR request it will respond with a small zone transfer.
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*erratic* can also be used in conjunction with the *autopath* plugin. This is mostly to aid in
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testing.
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## Syntax
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~~~ txt
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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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~~~
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* `drop`: drop 1 per **AMOUNT** of queries, the default is 2.
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* `truncate`: truncate 1 per **AMOUNT** of queries, the default is 2.
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* `delay`: delay 1 per **AMOUNT** of queries for **DURATION**, the default for **AMOUNT** is 2 and
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the default for **DURATION** is 100ms.
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In case of a zone transfer and truncate the final SOA record *isn't* added to the response.
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## Ready
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This plugin reports readiness to the ready plugin.
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## Examples
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~~~ corefile
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example.org {
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erratic {
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drop 3
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}
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}
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~~~
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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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~~~ corefile
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example.org {
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erratic
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}
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~~~
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Delay 1 in 3 queries for 50ms
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~~~ corefile
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example.org {
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erratic {
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delay 3 50ms
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}
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}
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~~~
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Delay 1 in 3 and truncate 1 in 5.
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~~~ corefile
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example.org {
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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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~~~
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Drop every second query.
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~~~ corefile
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example.org {
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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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~~~
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## Also See
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[RFC 3849](https://tools.ietf.org/html/rfc3849) and [RFC 5737](https://tools.ietf.org/html/rfc5737).
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