[Leaplist] 24-7 redundancy for poe folk

[tonyb at abcc.linuxceptional.com]

Ping is not a very good indicator of system health.  A ping packet  
only travels up to the network layer (layer 3 of the 7 layer OSI  
model.) and many times the kernel is running well enough to reply.  I  
can't tell you how many machines I have seen that respond to ping but  
are otherwise frozen solid.

YMMV

Tony

Richard F. Ostrow Jr. wrote:
> On Thu, July 2, 2009 2:38 pm, Randall Perry wrote:
>> So here is what I need:
>> -monitor several servers by pinging public IP
> Is this really sufficient? What if the server IP responds, but the service
> is down?