On 9/5/07, Henrik Stoerner <user-ce4a2c883f75@xymon.invalid> 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.