In xymon-4.3.12 it sends the client-local block for the hostname, if it is defined OR the block for the OS, correct?? Not a blend of the two, with host-specific entries overriding the generic entries, right??
Does that change in a later release? I need a better way to manage it...
Ralph Mitchell On Oct 27, 2014 9:11 PM, "Jeremy Laidman" <jlaidman at rebel-it.com.au> wrote:
On 28 October 2014 08:45, Gregory J. DeCecco <turranx at hotmail.com> wrote:
Is this the expected behavior?
Yes - if you know what to expect! ;-)
One of the major performance improvements that Xymon has over its predecessor BigBrother, is that it keeps state in memory, and doesn't have to re-read its configuration files every 5 minutes. In some cases, this means that changes are not visible immediately, and require either a bit of time to pass, or an action to take place. This is the case for many configuration files used by Xymon.
I can see how this behavior would get in the way of architecting and
rapid testing of a client-local.cfg file with multiple OSType, HostClass, and Hostname entries.
The contents of the file client-local.cfg is held in memory by xymond, and is not updated unless xymond detects a change. The xymond process can be given a HUP signal to tell it to re-check all of its configuration files for changes, and reload details as required.
You might find this sequence useful:
On the Xymon server:
Create a new entry for server01 in hosts.cfg
Send xymond a HUP signal:
sudo -u xymon pkill -HUP xymond$
- Run: xymon 127.0.0.1 "hostinfo host=server01 fields=XMH_CLASS,XMH_OS"
This shows the in-memory values for class and OS that xymond uses. As there has never been a client message, the values will be empty.
- Run: a) xymon 127.0.0.1 "client server01.bogos bogos" b) xymon 127.0.0.1 "hostinfo host=server01 fields=XMH_CLASS,XMH_OS"
This will show "bogos|bogos". Note that the "client" message gets nothing from client-local.cfg.
- Run: a) xymon 127.0.0.1 "client server01.win128 win128" b) xymon 127.0.0.1 "hostinfo host=server01 fields=XMH_CLASS,XMH_OS"
This will show "bogos|win128". Also, no output from client-local.cfg, but if there were an entry for [bogos] or [win128] it would have shown something, with preference given to [bogos].
- Run: a) touch hosts.cfg b) sudo -u xymon pkill -HUP xymond$ c) xymon 127.0.0.1 "hostinfo host=server01 fields=XMH_CLASS,XMH_OS"
This will show "|" - that is, no values.
- Run: a) xymon 127.0.0.1 "client server01.win16 win16" b) xymon 127.0.0.1 "hostinfo host=server01 fields=XMH_CLASS,XMH_OS"
This will show "win16|win16".
- Run: a) xymon 127.0.0.1 "client server01.aix bogos"
This should give the [aix] section of client-local.cfg.
HTH
J
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