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Full Discussion: How to Monitor Tomcat App Server?
Special Forums UNIX and Linux Applications How to Monitor Tomcat App Server? Post 302990352 by RavinderSingh13 on Wednesday 25th of January 2017 07:06:02 AM
Old 01-25-2017
Quote:
Originally Posted by mohtashims
It certainly stops logging. This may be because of the requests not reaching Tomcat so its obvious it does not have to log anything or the Tomcat is Hung or Restarts due to which we see the missing logging.
Can you please suggest how can we monitor the server health to understand if the missing logging is desired or problematic ?
Hello mohtashims,

You could take following as a starting point to try to solve this problem.
  1. First do a ps -ef | grep tomcat and see if process is running or not.
  2. If process is running then you could try to STOP tomcat service then, if it is not running then try to kill it only tomcat process.
  3. Now make sure nothing is running for tomcat process. Then navigate to path of your tomcat logs and check for .pid file there, check if .pid file is empty or not if it is not then do it empty(so what it will hold is the pid of current running tomcat process).
  4. Try to start tomcat process again now and monitor the logs.
  5. If nothing works then let's think like a troubleshooter and try to put logging(DEBUG) to your tomcat logs by putting DEBUG in logging.properties of tomcat 6/7.

NOTE: These steps shouldn't be taken in a LIVE environment, without doing analysis(as it is one of the scenario).

Thanks,
R. Singh
Last edited by rbatte1; 01-25-2017 at 09:56 AM.. Reason: Converted textual list to formatted roman numeral list
 

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LEARN ABOUT REDHAT

postlog

POSTLOG(1)						      General Commands Manual							POSTLOG(1)

NAME

       postlog - Postfix-compatible logging utility

SYNOPSIS

       postlog [-iv] [-c config_dir] [-p priority] [-t tag] [text...]

DESCRIPTION

       The postlog command implements a Postfix-compatible logging interface for use in, for example, shell scripts.

       By  default, postlog logs the text given on the command line as one record. If no text is specified on the command line, postlog reads from
       standard input and logs each input line as one record.

       Logging is sent to syslogd(8); when the standard error stream is connected to a terminal, logging is sent there as well.

       The following options are implemented:

       -c config_dir
	      Read the main.cf configuration file in the named directory instead of the default configuration directory.

       -i     Include the process ID in the logging tag.

       -p priority
	      Specifies the logging severity: info (default), warn, error, fatal, or panic.

       -t tag Specifies the logging tag, that is, the identifying name that appears at the beginning of each logging record.

       -v     Enable verbose logging for debugging purposes. Multiple -v options make the software increasingly verbose.

SEE ALSO

       syslogd(8) syslog daemon.

LICENSE

       The Secure Mailer license must be distributed with this software.

AUTHOR(S)
       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA

																	POSTLOG(1)
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