Check Nodemanager status using simple Shell script

Hi, 

Here I like to explain about, checking the node manager status using a simple shell script.

Function of this shell script:

           If you execute this shell script, it will check whether Node Manager is running or not on your machine, using WLST, we can do the same using "ps" command, but we are trying to use the WLST commands.

Shell script will call a python script (checkNM.py), it will call WLST and try to connect with Node manager and it will check the status.

You can customize this script by updating the following variables, 

1. weblogic home.

2. Nodemanager IP

3. Nodemanager Port

4. Domain name

5.Domain full path

WLST command to connect with NM:

nmConnect(CONSOLE_USER_NAME, CONSOLE_PASSWORD, NODE_MANAGER_IP, NODE_MANAGER_PORT, DOMAIN_NAME,FULL_PATH_FOR_DOMAIN,'plain') 

To call WLST and execute a python script:

sh ${WL_HOME}/common/bin/wlst.sh ${PYTHON_FILE_NAME}

shell script used to start Node manger:

startNodeManager.sh 

Solaris command used to get the last command status - $?

Shell Script to start Node Manager process:

#!/bin/sh


#***************************************************************
# This script is used to check your server status and node manager status using WLST
# It sets the following variables:
#
# WL_HOME    - The root directory of your WebLogic installation
# PYTHON_FILE_NAME - WLST file name to get server status
#****************************************************************




BEA_HOME="/opt/weblogic-10.3.3"
WL_HOME="${BEA_HOME}/weblogic103"
PYTHON_FILE_NAME="checkNM.py"
NODE_MANAGER_HOME="/ dir0/ dir1/ dir2/nodemanager"
NM_STARTUP_FILE="startNodeManager.sh"


sh ${WL_HOME}/common/bin/wlst.sh ${PYTHON_FILE_NAME}
if [ $? -eq 2 ]         # Test exit status of "cmp" command.
then
  echo "Node manager is not running"
  ls -lrt ${NODE_MANAGER_HOME}/${NM_STARTUP_FILE}
  value=$?
  if [ value -eq 2 ]
then 
echo ${NM_STARTUP_FILE} " File not found in "  ${NODE_MANAGER_HOME}  
  elif [ value -eq 0 ]
then
echo "NM  Home found and starting Node Manager "
nohup ${NODE_MANAGER_HOME}/${NM_STARTUP_FILE} &
if [ $? -eq 0 ]
then
ps -ef | grep weblogic.NodeManager | grep -v grep
if [ $? -eq 0 ]
then
echo "Node manager started properlly"
else
echo "Node manager not started"
fi


else
echo "Not able to start Node Manager"
fi
  else
echo "Some other error - " value
  fi  
else  
  echo "Process completed"
fi


-----------------------------------------------------------------

Python script - checkNM.py:

CONSOLE_USER_NAME="weblogic"

CONSOLE_PASSWORD="weblogic11"

NODE_MANAGER_IP="192.168.1.40"

NODE_MANAGER_PORT="5301"

DOMAIN_NAME=" domainName"

FULL_PATH_FOR_DOMAIN=" / dir0/ dir1/ dir2/domainName"

import sys

try:

nmConnect(CONSOLE_USER_NAME, CONSOLE_PASSWORD, NODE_MANAGER_IP, NODE_MANAGER_PORT, DOMAIN_NAME,FULL_PATH_FOR_DOMAIN,'plain')

connected = 1

except:

    print('Could not connect to the NodeManager.')

NODE_1="ManageServer1"

NODE_2=" ManageServer12"

if connected==1:

server = NODE_1

serverStatus=nmServerStatus(server)

try:

if serverStatus=='RUNNING':

server = NODE_2

serverStatus=nmServerStatus(server)

if serverStatus=='RUNNING':

print('All servers were running - '+server+' -'+serverStatus)

else:

print(server+' - '+serverStatus)

elif serverStatus=='SHUTDOWN':

print(server+' - '+serverStatus)

elif serverStatus=='STARTING':

print('Server startup has been initiated by another process.')

else:

print(server+' - '+serverStatus)

except:

print('Error restarting.')

nmDisconnect()

exit()

else:

exit(exitcode=2)

----------------------------------------------------------------- 

Please try yourself and let me know if you have any questions