[hobbit] Stupid sound question - "DNS Error"

[Gary Baluha]

On 9/5/07, Henrik Stoerner <henrik at hswn.dk> wrote:
>
> On Wed, Sep 05, 2007 at 09:43:32AM -0400, Gary Baluha wrote:
> > It sounds like an obvious answer, but what does the http/https
> monitoring
> > error "DNS Error" mean, exactly?
>
> It means Hobbit could not lookup the hostname in DNS.


Okay, I thought it was pretty self explanatory, but a quick glance at the
code wasn't obvious to me.

> Specifically, I have several https checks defined in Hobbit, and a good
> > number of them get the "DNS Error" message multiple times a day; roughly
> on
> > the order of every 1-3 hours.  I have manually verified that DNS is
> working
> > for these hosts.  It might help me troubleshoot this if I know exactly
> how
> > Hobbit comes to this determination, and if anything else other than DNS
> > could cause it to appear.
>
> A local caching DNS server is usually a good idea. Hobbit has been known
> to knock out DNS servers, because it sends a lot of requests very
> quickly.


Well, two suggestions to have a local caching DNS must mean it's a pretty
good idea.  I set this up, and will see if that fixes the problem.
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