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plugin/secondary: doc updates (#4686)

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Add retry behavior on startup and point to RFC 5936

Signed-off-by: Miek Gieben <miek@miek.nl>
This commit is contained in:
Miek Gieben
2021-06-11 19:54:49 +02:00
committed by GitHub
parent 09b63df9c1
commit be8958552e
1 changed files with 4 additions and 0 deletions
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plugin/secondary/README.md
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@@ -10,6 +10,9 @@ With *secondary* you can transfer (via AXFR) a zone from another server. The ret
*not committed* to disk (a violation of the RFC). This means restarting CoreDNS will cause it to *not committed* to disk (a violation of the RFC). This means restarting CoreDNS will cause it to
retrieve all secondary zones. retrieve all secondary zones.
If the primary server(s) don't respond when CoreDNS is starting up, the AXFR will be retried
indefinitely every 10s.
## Syntax ## Syntax
~~~ ~~~
@@ -67,3 +70,4 @@ Only AXFR is supported and the retrieved zone is not committed to disk.
## See Also ## See Also
See the *transfer* plugin to enable zone transfers _to_ other servers. See the *transfer* plugin to enable zone transfers _to_ other servers.
And RFC 5936 detailing the AXFR protocol.