Automate Thread Dump logging and collection on server

1. Download JDK as follows and Get Heap Memory dump and Thread dump:
   • Download JDK 
     
     • cd /opt
     • wget https://s3.amazonaws.com/qmetry-download/jdk-8u211-linux-x64.tar.gz
     • tar -xvf jdk-8u211-linux-x64.tar.gz
     • cd jdk1.8.0_211/bin/
2. Setup Auto-capturing of Thread Dump logging
   • mkdir {QMetry Installed Folder Name}/qmetry-logs/capturedlogs
     • Put attached file in below mentioned folder : {QMetry Installed Folder Name}/qmetry-dump.sh
   • Now create crontab using below command
     • crontab -e
   • After this command execution editor will open and write below details in that. After add below line save and exit editor using :wq 
     • 0 */4 * * *  sh /home/qmetry/{QMetry Installed Folder Name}/qmetry-dump.sh  /home/qmetry/{QMetry Installed Folder Name}/qmetry-logs/capturedlogs {JAVA PID}
   • Below command list crontab
     • crontab -l

Note :

• if crontab command is not working then use “yum install cronie” command to install it
• jdk1.8.0_211 must be present at /opt location.