Ravish Mody

This post is written considering to send an email alert message to Admin’s which would alert them about the Thread Pool Health State. All of us know if in Weblogic Health State is as WARNING state then it means something is not going correct in the server and we have to check it. Thus this WLST script would surely help all the Weblogic Administrators who are working in Production Environment.

In below  script has a properties file in which you can give all the details about the domain as well as time interval and the number of times the ratio has to be checked.

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Steps to Create an Email Alert for Threads Pool Health

Step1) Create a Directory somewhere in your file system like : “C:WLST”

Step2) Write a Properties file “domains.properties” inside “C:WLST” like following:

admin.url=t3://localhost:8001
admin.username=weblogic
admin.password=weblogic

# Number of times the RATIO has to be checked
checkTimes_Number=25

# TIME INTERVAL between number of times the RATIO has to be checked (30000 milliseconds = 30 seconds)
checkInterval_in_Milliseconds=30000

############ Accouding to the above values the checker will run for total 25 times in an interval of 30 seconds each. #############

Step-3) Create a WLST Script somewhere in your file system with some name like “Alert_ThreadPoolHealth.py” inside “C:WLST” contents will be something like following:

#############################################################################
#
# @author Copyright (c) 2010 - 2011 by Middleware Magic, All Rights Reserved.
#
#############################################################################

from java.io import FileInputStream
import java.lang
import os
import string

propInputStream = FileInputStream("domains.properties")
configProps = Properties()
configProps.load(propInputStream)

serverurl = configProps.get("server.url")
adminUser = configProps.get("admin.username")
adminPassword = configProps.get("admin.password")
checkTimes_Number = configProps.get("checkTimes_Number")
checkInterval_in_Milliseconds = configProps.get("checkInterval_in_Milliseconds")

i = 0
y = int(checkTimes_Number)

#############  This method would send the Alert Email  #################
def sendMailString():
	os.system('/bin/mailx -s  "ALERT: Thread Pool Health is in WARNING !!! " ABCD@COMPANY.com < rw_file')
	print '*********  ALERT MAIL HAS BEEN SENT  ***********'
	print ''

#############  This method is checking the Thread Pool Health   #################
def alertThreadPoolHealth(healthState):
	state ="Checking HealthState: " + healthState
	check = string.find(state,"HEALTH_WARN")
	if check != -1:
		print '!!!! ALERT !!!! Thread Pool Health is in WARNING State'
		print ''
		message =  'Please Check the Thread Pool is in WARNING State.'
		cmd = "echo " + message +" > rw_file"
		os.system(cmd)
		sendMailString()
	else:
		print 'Everything is working fine till now'

connect(adminUser,adminPassword,serverurl)
serverRuntime()
cd('ThreadPoolRuntime/ThreadPoolRuntime')

while (i < y):
	ls()
	healthState=cmo.getHealthState();
	alertThreadPoolHealth(str(healthState));
	Thread.sleep(int(checkInterval_in_Milliseconds))
	i = i + 1

Step-4) Open a command prompt and then run the “setWLSEnv.cmd” or “setWLSEnv.sh” to set the CLASSPATH and PATH variables. Better you do echo %CLASSPATH% or echo $CLASSPATH to see whether the CLASSPATH is set properly or not. If you see an Empty Classpath even after running the “setWLSEnv.sh” then please refer to the Note mentioned at Step3) in the Following post: http://middlewaremagic.com/weblogic/?page_id=1492

Step-5) Now run the WLST Script in the same command prompt like following:

java   weblogic.WLST  Alert_ThreadPoolHealth.py

You will see the following kind of results in the command prompt

java weblogic.WLST Alert_ThreadPoolHealth.py

Initializing WebLogic Scripting Tool (WLST) ...
Welcome to WebLogic Server Administration Scripting Shell
Type help() for help on available commands

Connecting to t3://localhost:8001 with userid weblogic ...
Successfully connected to Admin Server 'AdminServer' that belongs to domain 'Domain_8001'.

Warning: An insecure protocol was used to connect to the
server. To ensure on-the-wire security, the SSL port or
Admin port should be used instead.

Location changed to serverRuntime tree. This is a read-only tree with ServerRuntimeMBean as the root.
For more help, use help(serverRuntime)
-r--   CompletedRequestCount                        3714
-r--   ExecuteThreadIdleCount                       0
-r--   ExecuteThreadTotalCount                      6
-r--   ExecuteThreads                               weblogic.work.ExecuteThreadRuntime[weblogic.work.ExecuteThreadRuntime@39c4e135, weblogic.work.ExecuteThreadRuntime@2c9d7c34, weblogic.work.ExecuteThreadRuntime@174550ce, weblogic.work.ExecuteThreadRuntime@47bc1051, weblogic.work.ExecuteThreadRuntime@bd35aa2, weblogic.work.ExecuteThreadRuntime@60e347be]
-r--   HealthState                                  Component:threadpool,State:HEALTH_WARN,MBean:ThreadPoolRuntime,ReasonCode:[ThreadPool has stuck threads]
-r--   HoggingThreadCount                           2
-r--   MinThreadsConstraintsCompleted               94
-r--   MinThreadsConstraintsPending                 0
-r--   Name                                         ThreadPoolRuntime
-r--   PendingUserRequestCount                      0
-r--   QueueLength                                  0
-r--   SharedCapacityForWorkManagers                65536
-r--   StandbyThreadCount                           3
-r--   Suspended                                    false
-r--   Throughput                                   9.495252373813093
-r--   Type                                         ThreadPoolRuntime
-r-x   preDeregister                                Void :

!!!! ALERT !!!! Thread Pool Health is in WARNING State

*********  ALERT MAIL HAS BEEN SENT  ***********

NOTE: This script is using mailx (i.e. but Windows box does not have mailx utility) so please do check if your mailx is configured properly or else script would run properly but the mail would not be sent.

Alert Email

Regards,

Ravish Mody