Date:  Tue, 17 Mar 2009 07:28:55 -0500
From:  Chris Gebhardt - VIRTBIZ Internet <cobaltfacts (at mark) virtbiz.com>
Subject:  [coba-e:15344] Re  Broken FTP
To:  coba-e (at mark) bluequartz.org
Message-Id:  <49BF9787.5030804 (at mark) virtbiz.com>
In-Reply-To:  <45DACA7BE1DEA245AF6C95E5B94E531B0D07A62D72 (at mark) datastore.mainline.local>
References:  <45DACA7BE1DEA245AF6C95E5B94E531B0D07A62D72 (at mark) datastore.mainline.local>
X-Mail-Count: 15344

Colin Jack wrote:
> The broken FTP issue seems to have spread to all our BQ and BO servers!
> Even though we had updated all servers we had only been seeing the SMTP/FTP problems on one.
> We now have it on all 7 servers.
> 
> It is not only in the panel - we are getting complaints from users that the FTP sometimes works and sometimes doesn't - which ties in with our Active Monitor reports:
> 
> * The FTP server is not running and could not be restarted.
> 
> 15 mins later:
> 
> * The FTP server is operating normally.
> 
> Seeing this about four or five times in 24 hours.

We have yet to witness this on any server and we run service-level 
monitoring on every one of our hosting boxes at 5 minute intervals.

This sort of smells DNS'y to me with the off/on-again nature that you're 
describing.  You're not running DNS lookups on your FTP, are you?   How 
is your DNS recursion doing?   Does /var/log/messages show anything odd 
w/ regard to proftpd?

-- 
Chris Gebhardt
VIRTBIZ Internet Services
Access, Web Hosting, Colocation, Dedicated
www.virtbiz.com | toll-free (866) 4 VIRTBIZ