Provided by: xymon_4.3.30-1build2_amd64 bug


       combo.cfg - Configuration of combostatus tool




       combostatus(1)  uses  it's  own  configuration file, $XYMONHOME/etc/combo.cfg Each line in
       this file defines a combined test.


       Each line of the file defines a new combined test. Blank lines and lines starting  with  a
       hash mark (#) are treated as comments and ignored.

       The  configuration  file  uses  the  hostnames and testnames that are already used in your
       Xymon hosts.cfg file. These are then combined using normal logical operators  -  "||"  for
       "or", "&&" for "and" etc.

       A  simple test - e.g. "Web1.http" - results in the value "1" if the "http" test for server
       "Web1" is green, yellow or clear. It yields the value "0" if it is red, purple or blue.

       Apart from the logical operations, you can also do  integer  arithmetic  and  comparisons.
       E.g. the following is valid:

       WebCluster.http = (Web1.http + Web2.http + Web3.http) >= 2

       This test is green if two or more of the http tests for Web1, Web2 and Web3 are green.

       The full range of operators are:

               +      Add
               -      Subtract
               *      Multiply
               /      Divide
               %      Modulo
               |      Bit-wise "or"
               &      Bit-wise "and"
               ||     Logical "or"
               &&     Logical "and"
               >      Greater than
               <      Less than
               >=     Greater than or equal
               <=     Less than or equal
               ==     Equal

       There  is currently no support for a "not" operator. If you need it, use the transcription
       "(host.test == 0)" instead of "!host.test".

       NB: All operators have EQUAL PRECEDENCE. If you need something  evaluated  in  a  specific
       order, use parentheses to group the expressions together.

       If  the  expression  comes out as "0", the combined test goes red. If it comes out as non-
       zero, the combined test is green.

       Note: If the expression involves hostnames with a character that is  also  an  operator  -
       e.g. if you have a host "" with a dash in the hostname - then the
       operator-character must be escaped with a backslash '\' in the expression, or it  will  be
       interpreted as an operator.  E.g. like this:

        nyc.conn = (t1\-router\-nyc.conn || backup\-router\-nyc.conn)


       WebCluster.http = (Web1.http || Web2.http)
       AppSrvCluster.procs = (AppSrv1.conn && AppSrv1.procs) || (AppSrv2.conn && AppSrv2.procs)
       Customer.cluster = WebCluster.http && AppSrvCluster.procs

       The  first  line defines a new test, with hostname "WebCluster" and the columnname "http".
       It will be green if the http test on either the "Web1" or the "Web2" server is green.

       The second line defines a "procs" test for the "AppSrvCluster" host.  Each of the  AppSrv1
       and  AppSrv2 hosts is checked for "conn" (ping) and their "procs" test. On each host, both
       of these must be green, but the combined test is green if that condition is  fulfilled  on
       just one of the hosts.

       The third line uses the two first tests to build a "double combined" test, defining a test
       that shows the overall health of the system.