Master and slave servers
Daniel Graf
root at 127.0.0.1
Thu May 11 17:00:36 UTC 2000
On 11 May 2000 09:38:14 -0700, "mike at snix"
<mmullins at infinitycomputer.com> wrote:
>I have two DNS servers running on RedHat 6.1. I have one acting as the
>primary and one as the secondary. I have the secondary pointing to the
>primary as a slave. If the primary goes down, will the slave serve the DNS?
>Or do I need to have the files located on the secondary and set ip up as a
>master as well?
>
>Thanks for any help.
Maybe I don't understand you. This is the whole point of a secondary
server.
The secondary server should attempt to contact the primary every
REFRESH seconds to update it's (the secondary's) records. If a
refresh fails, it (the secondary) attempts every RETRY seconds. The
secondary will continue to privide the information until EXPIRE
seconds have passed. Expire is usually rather large. Say, a week or
month or so. So you're primary can be down for a month and the
secondary will still be serving the last known good zone info.
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