Re: [GTALUG] Cache DNS issues.

On 11/25/2014 11:08 AM, William Muriithi wrote:

‎Morning,

I have cache dns running on a postfix based mail server. The bin‎d server do come up before postfix, but dns queries fail till the dns master come up.

Doesn't slave servers keep data persistent? I mean, is it normal for slave to fail resolving queries on start up if the master us down?

What's your cache time? A cache will typically hold the data for a short time, to keep stale data from propogating. It might be as short as a few minutes. A cache certainly won't survive a reboot.