trusty (8) watch-multiple-mimedefangs.8.gz

NAME

       watch-multiple-mimdefangs.tcl - Keep an eye on a cluster of MIMEDefang machines

SYNOPSIS

       watch-multiple-mimdefangs.tcl [-archive] machine-1 machine-2 ... machine-N

DESCRIPTION

       watch-multiple-mimdefangs.tcl  is  a  Tk  script  that  graphically  displays  the  status of mimedefang-
       multiplexor(8) on a cluster of machines.  Note that Tcl/Tk 8.4  or  higher  is  required  to  run  watch-
       multiple-mimdefangs.tcl.

       If you supply the -archive command-line option, then watch-multiple-mimdefangs.tcl logs the output of md-
       mx-ctrl rawload for each machine.  The output for machine_name is logged in:

       $HOME/.watch-multiple-mimedefangs/machine_name/data.

PREREQUISITES

       To  use  watch-multiple-mimdefangs.tcl  to  monitor  a  cluster  of  machines,  you  need  the  following
       prerequisites:

       o      A UNIX-like machine with Tcl/Tk 8.4, the X window system and an SSH client.  You also need "xterm"
              to use some of the features.

       o      The ability to SSH as root to all of the machines you want to monitor.   Ideally,  you  should  be
              using  the  SSH agent so that you can SSH to the monitored machines as root without being prompted
              for a password or pass phrase.

       o      The program md-mx-ctrl on root's path on all the machines you want to monitor.

DISPLAY

       For each machine specified on the command line, watch-multiple-mimdefangs.tcl creates a chart  with  five
       columns.  The columns are:

       o      A  button  with  the  name  of the machine.  Clicking the button pops up a menu that lets you take
              various actions, as described later.  If all slaves on the machine  are  busy,  the  button  turns
              yellow.

       o      A  label  showing  the  number  of  busy slaves in the form "busy/total", where total is the total
              number of slaves.

       o      A label showing the average number of messages per second over the last 10 seconds.

       o      A label showing the average number of milliseconds per scan over the last 10 seconds.

       o      A chart that graphs the average number of busy slaves, the average number of messages  per  second
              and the average scan time in milliseconds, all averaged over the last 10 seconds.

MACHINE MENU

       If you click on a machine name, a menu with three options pops up:

       SSH    Open an xterm session and ssh as root to the machine.

       Busy Slaves
              Monitor  the busy slaves on the machine.  If you click on the process-ID of a slave, an xterm will
              open up and the command "strace -s 100 -t -p pid" will be executed on the remote machine.  This is
              Linux-specific,  but  you  can edit watch-multiple-mimdefangs.tcl to replace the command with your
              particular system's command for tracing system calls.

       Delete Remove the machine from the list of machines being monitored.

ADDING A MACHINE

       If you need to add a machine to the display, simply type the name of the machine in  the  "Add  Machine:"
       box and press Enter.

AUTHOR

       watch-multiple-mimdefangs.tcl was written by David F. Skoll.

SEE ALSO

       mimedefang.pl(8),  mimedefang-filter(5),  mimedefang(8),  mimedefang-protocol(7),  md-mx-ctrl(8),  watch-
       mimedefang(8)