"noconn" configuration feature oddity ... 🔗 link

A colleague and I noticed a feature of xymon last week, and tested it
across a few version from 4.3.12 to 4.3.17   [ upgrading etc etc is not a
trivial matter in these environments so its meaningless to just suggest
"upgrade asap" - although see [1] for general feedback etc ].

If a new host is added to hosts.cfg with a noconn configuration in a new
group or page configuratiopn

eg


page test Test
group-compress <H3>Test</H3>
4.5.6.7 test #  noconn

that server NEVER appears in the webpage as expected, although the new
group does appear albeit then empty

If it is introduced without that noconn parementer then it does as
expected appear.  Then adding noconn to it subsequently does indeed drop
the conn column and reproting then continues as normal.


We have also found that specifying noping instead of noconn does include
the server in the webpage with a white face in the conn column - ie it does
get included, so is maybe a work round  at least)

However...

adding

4.5.6.7 test #  noconn

to an already existing group/page - that server DOES get listed but with
no subsequent tests against it - the line remains empty

This would appear to be a feature of xymon Ive not come accrioss in 9+
years of using it.

[1] Anybody found any other "fixes" to be ablwe to sepcify noconn from the
outset?

I've googled but nothing appears to match that - though that could just be
my rubbish googling skills...


UPDATE:  deeper wierdness...  if i add a eg ssh test to that hosts.cfg
line ...  then the server DOES get added...

cheers

ian

On Mon, Oct 5, 2020 at 7:44 PM Jeremy Laidman <user-0608abae5e7c@xymon.invalid> wrote:

Ian

An interesting discovery indeed. Although I'm not greatly surprised. A
host that has no tests and has never had any test results, is not a
particularly interesting one, and is rather like a tree falling in an
uninhabited forest, where nobody knows - or even cares - about the state of
the tree. I'd attribute this phenomenon to the type of "undefined
behaviour" that can occur when any process is asked to do something it
wasn't designed to do and which, in essence, makes no sense.

Unless I'm missing something.

Cheers
Jeremy


On Mon, 5 Oct 2020 at 23:33, Ian Diddams via Xymon <xymon at xymon.com>
wrote:

---------- Forwarded message ----------
From: Ian Diddams <user-7fbf34ed5219@xymon.invalid>
To: "xymon at xymon.com" <xymon at xymon.com>
Cc:
Bcc:
Date: Mon, 5 Oct 2020 11:53:01 +0000 (UTC)
Subject: "noconn" configuration feature oddity ...
A colleague and I noticed a feature of xymon last week, and tested it
across a few version from 4.3.12 to 4.3.17   [ upgrading etc etc is not a
trivial matter in these environments so its meaningless to just suggest
"upgrade asap" - although see [1] for general feedback etc ].

If a new host is added to hosts.cfg with a noconn configuration in a new
group or page configuratiopn

eg


page test Test
group-compress <H3>Test</H3>
4.5.6.7 test #  noconn

that server NEVER appears in the webpage as expected, although the new
group does appear albeit then empty

If it is introduced without that noconn parementer then it does as
expected appear.  Then adding noconn to it subsequently does indeed drop
the conn column and reproting then continues as normal.


We have also found that specifying noping instead of noconn does include
the server in the webpage with a white face in the conn column - ie it does
get included, so is maybe a work round  at least)

However...

adding

4.5.6.7 test #  noconn

to an already existing group/page - that server DOES get listed but with
no subsequent tests against it - the line remains empty

This would appear to be a feature of xymon Ive not come accrioss in 9+
years of using it.

[1] Anybody found any other "fixes" to be ablwe to sepcify noconn from
the outset?

I've googled but nothing appears to match that - though that could just
be my rubbish googling skills...


UPDATE:  deeper wierdness...  if i add a eg ssh test to that hosts.cfg
line ...  then the server DOES get added...

cheers

ian


---------- Forwarded message ----------
From: Ian Diddams via Xymon <xymon at xymon.com>
To: "xymon at xymon.com" <xymon at xymon.com>
Cc:
Bcc:
Date: Mon, 5 Oct 2020 11:53:01 +0000 (UTC)
Subject: [Xymon] "noconn" configuration feature oddity ...