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.
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)
