Hi Christian

TL;DR: Xymon will use the first line for the test in the analysis.cfg file that matches either hostname or class.

As far as I can tell, it's the first matching line that wins. For instance, the MEMACT line that will match a Linux host called LINUX-1 will be the line in CLASS=linux, setting MEMACT=80/85. If you moved the HOST=LINUX-1 above CLASS=linux then that would match instead, so MEMACT=85/90. And if you moved the DEFAULT entry above that, then you would have MEMACT=90/95. This is why the example analysis.cfg says that the DEFAULT section "must be placed at the end of the file". It's also why you can have two lines for the same test in the same section, and only the first one will be used.

Internally, Xymon converts every rule line into a certain structure. You can dump this structure using "xymond_client --dump-config", with the format being "<TESTNAME> <alert parameters> [HOST|CLASS]=<section>". You can then check each line to see if it is the test you're interested in, and if it matches either class or hostname then those are the parameters it will use for colour selection.

Also note that the class defaults to the OS name, but can be different. So in essence the flow is effectively like this:

Repeat for each line: Is the line for the test we're interested in? (eg MEMACT)? If so, does the section name match the OS or the class or the hostname? If so, this is the line for you -> exit

Cheers Jeremy

On Fri, 11 Dec 2020 at 22:26, Becker Christian < christian.becker at rhein-zeitung.net> wrote:

Hello to the list,

this is probably the 50st question about this?..

Can anybody guide me to understand, how individual machine thresholds, default thresholds and class thresholds are interpreted in analysis.cfg for different servers and in which order?

Let me say this is my analysis.cfg (*this is not my working analysis.cfg, it?s shown here just to ask my question*):

Drop windows servers below here

CLASS=win32

        MEMACT  85 90

        MEMACT  85 90

        MEMSWAP 85 90



HOST=WINDOWS-1

        MEMACT  97 98

Drop powershell configured servers below here

CLASS=powershell

        MEMACT  90 95

        MEMACT  90 95

        MEMSWAP 90 95



HOST=WINDOWS-2

        MEMACT  90 92

Drop linux servers below here

CLASS=linux

       PROC    %(syslogd|syslog-ng|rsyslogd)

        PROC   sshd

        MEMACT  80 85

        MEMACT  80 85

        MEMSWAP 80 85



HOST=LINUX-1

        MEMACT  85 90

Default values

DEFAULT

        DISK    * 90 95

        MEMSWAP 80 90

        MEMACT  90 95

I have difficulties to understand, how the values would be applied. Is it that way, that it looks to the class of a host and applies the values of the class first, then the rule per hostname, and then the default? Or does it stop at the first match?

Regards, greetings from Germany

Christian

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