Can I monitor how many connections are in TIME_WAIT for a specific port

As I said before, this isn't sufficient.

HP NA is so flakey, that this port test would show whether the port answers in the simple case, but it doesn't test that the port actually works for what we need it to do.

I have to have my script test the functionality of the port, not just that it answers.

Thanks for everyone's help. I have what I need to get done what I need.

Paul Root    - Senior Engineer
Managed Services Systems - CenturyLink

-----Original Message-----
From: Buchan Milne [mailto:user-9b139aff4dec@xymon.invalid]
Sent: Wednesday, January 25, 2012 9:02 AM
To: xymon at xymon.com
Cc: Root, Paul
Subject: Re: [Xymon] Can I monitor how many connections are in
TIME_WAIT for a specific port

On Tuesday, 24 January 2012 18:13:41 Root, Paul wrote:

Hi,
        We are monitoring a particular port that we are having issues
with.
8022, it's a proxy port for HP NA.

        Anyway, I have an expect script that goes in and tests the
functionality of the port. But when it starts to go bad, this script
get
stuck in TIME_WAIT, along with the users connecting to the port.

        So, can I look at the port data before I try connecting, and
if
there are a bunch of TIME_WAIT connections, just skip the test
entirely?

Why don't you just (in hobbit-clients.cfg or analysis.cfg) use
something like
this

        PORT LOCAL=%([.:]389) STATE=TIME_WAIT MIN=0 MAX=750 COL=yellow
        PORT LOCAL=%([.:]389) STATE=TIME_WAIT TRACK=ldap-wait MIN=0
MAX=1500
COL=red

(example taken directly from a similar requirement for monitoring
highly
utilised LDAP servers with badly behaving clients - regex could
probably be
improved but works fine for my purposes)

        I'm running the test from the xymon server, so I was thinking
of
pulling the data out of xymon directly. Would that by xymoncmd?

Why script around it when built-in features can detect and alert on the
error
condition (and provide graphs as well in case you want to correlate the
exact
number of connections in a specific state to other events)?

Regards,
Buchan

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