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Full Discussion: Montioring Script Tomcat catalina.out
Top Forums Shell Programming and Scripting Montioring Script Tomcat catalina.out Post 302981693 by stomp on Saturday 17th of September 2016 03:54:27 PM
Old 09-17-2016
One of the more important things of Tomcat Monitoring is to keep an eye on the memory usage. The solution for most Tomcat/Java Server Problems is...

More Memory!

Some say there's only one better thing than more memory for a Tomcat Server:

Even more Memory!

And for the monitoring part: I suggest you to have a more broader look at your problem. When you have a certain message "...bla...broken pipe...", then you may know it already "Ah this one again" or you dig into your system until you figure out the root cause of the problem. What helps a lot in discovering the reasons are system performance data.
  • Tomcat Java Memory Usage over time
  • System RAM Usage over time
  • IO-Usage and Filesystem growth over time
  • CPU-Usage
  • Load
  • Network(Bandwidth+Errors)
  • Clock-synchronisation and drift(Very important!)
If you have those data, you'll discover from a look at those graphs what is normal for your system at what is not and above all: you'll discover all sort of changes before a critical state is reached. You'll learn what the impact of certain technical changes is, when you see the data coming in after that.

I suggest you to have a look at some monitoring system. As I assume you work in some type of company, there's probably already a monitoring system installed. I would expect most monitoring systems to be flexible enough to add your specific own checks there or use the features already available there. If no monitoring system is available to use, I recommend monit as an easy one ore check_mk as a more powerful approach - the latter needs to be on a separate best dedicated system(vps is enough). (Maybe there's a better solution for solaris available, but I do not know that).

There are some checks available for Tomcat/Java and check_mk. The client(=your tomcat server) part consists of a bash script most of the times. Sometimes, so chances are good that they just work at your server. Look here: Catalog of check plugins

And of course that one you're after(log file pattern matching) may be an import issue too. Most monitoring applications do have such features available.
Last edited by stomp; 09-17-2016 at 05:08 PM..
 

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LEARN ABOUT X11R4

dbus-monitor

dbus-monitor(1) 					      General Commands Manual						   dbus-monitor(1)

NAME

       dbus-monitor - debug probe to print message bus messages

SYNOPSIS

       dbus-monitor [--system | --session] [--profile | --monitor] [watch expressions]

DESCRIPTION

       The  dbus-monitor command is used to monitor messages going through a D-Bus message bus.  See http://www.freedesktop.org/software/dbus/ for
       more information about the big picture.

       There are two well-known message buses: the systemwide message bus (installed on many systems as the "messagebus"  service)  and  the  per-
       user-login-session  message  bus (started each time a user logs in).  The --system and --session options direct dbus-monitor to monitor the
       system or session buses respectively.  If neither is specified, dbus-monitor monitors the session bus.

       dbus-monitor has two different output modes, the 'classic'-style monitoring mode and profiling mode. The profiling format is a compact for-
       mat  with a single line per message and microsecond-resolution timing information. The --profile and --monitor options select the profiling
       and monitoring output format respectively. If neither is specified, dbus-monitor uses the monitoring output format.

       In order to get dbus-monitor to see the messages you are interested in, you should specify a set of watch expressions as you  would  expect
       to be passed to the dbus_bus_add_watch function.

       The message bus configuration may keep dbus-monitor from seeing all messages, especially if you run the monitor as a non-root user.

OPTIONS

       --system
	      Monitor the system message bus.

       --session
	      Monitor the session message bus.	(This is the default.)

       --profile
	      Use the profiling output format.

       --monitor
	      Use the monitoring output format.  (This is the default.)

EXAMPLE

       Here is an example of using dbus-monitor to watch for the gnome typing monitor to say things

	 dbus-monitor "type='signal',sender='org.gnome.TypingMonitor',interface='org.gnome.TypingMonitor'"

AUTHOR

       dbus-monitor was written by Philip Blundell.  The profiling output mode was added by Olli Salli.

BUGS

       Please send bug reports to the D-Bus mailing list or bug tracker, see http://www.freedesktop.org/software/dbus/

																   dbus-monitor(1)
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