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       msgcache - Cache client messages for later pickup by xymonfetch


       msgcache [options]


       msgcache  implements a Xymon message cache. It is intended for use with
       clients which cannot deliver their data to  the  Xymon  server  in  the
       normal  way.  Instead  of  having the client tools connect to the Xymon
       server, msgcache runs locally and the client tools then  deliver  their
       data  to  the  msgcache  daemon.  The  msgcache  daemon  is then polled
       regularly by the  xymonfetch(8)  utility,  which  collects  the  client
       messages stored by msgcache and forwards them to the Xymon server.

       NOTE: When using msgcache, the XYMSRV setting for the clients should be
       XYMSRV= instead of pointing at the real Xymon server.


       Clients delivering their data to msgcache instead  of  the  real  Xymon
       server  will  in  general  not  notice  this.  Specifically, the client
       configuration data provided by the Xymon server when a client  delivers
       its  data  is forwarded through the xymonfetch / msgcache chain, so the
       normal centralized client configuration works.

       However, other commands which rely on  clients  communicating  directly
       with the Xymon server will not work. This includes the config and query
       commands which clients may use to fetch configuration files  and  query
       the Xymon server for a current status.

       The download command also does not work with msgcache.  This means that
       the  automatic  client  update  facility  will  not  work  for  clients
       communicating via msgcache.


              Defines the IP-address and portnumber where msgcache listens for
              incoming  connections.  By   default,   msgcache   listens   for
              connections on all network interfaces, port 1984.

              Restricts  which  servers  are  allowed  to  pick  up the cached
              messages.  By default anyone can contact  the  msgcache  utility
              and  request all of the cached messages. This option allows only
              the listed servers to request the cached messages.

              Defines how long cached messages are kept. If  the  message  has
              not  been  picked  up  with  N  seconds after being delivered to
              msgcache, it is silently discarded. Default: N=600  seconds  (10

              Run as a daemon, i.e. msgcache will detach from the terminal and
              run as a background task

              Run as a foreground task. This option must be used when msgcache
              is  started by xymonlaunch(8) which is the normal way of running

              Store the process ID of the msgcache task in FILENAME.

              Log msgcache output to FILENAME.

              Enable debugging output.


       xymonfetch(8), xymon(7)

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