Bash Script to Trigger JVM Heap Dump Using JMX

cq_trigger_heapdump.sh

#!/bin/bash

# Bash script to trigger CQ/AEM heap dump using curl via JMX

# Author : Jayan Kandathil
# Version : 0.1
# Last updated : January 27, 2015

# Instructions : Copy to CQ/AEM Linux instance's /tmp folder, make necessary changes, enable the execute bit and run

# Echo on (for debugging purposes)
# set -x verbose

# Host that CQ runs on
HOST=localhost

# TCP port CQ listens on
PORT=4502

# CQ Admin user ID
CQ_USER=admin

# CQ Admin user password
CQ_USER_PASSWORD=admin

# Source Folder where CQ is backed up (no trailing forward slash)
CQ_HEAPDUMP_FOLDER=/tmp

DATE_TIME=$(date "+%Y.%m.%d-%H.%M.%S")

# CQ Backup in progress file (CQ creates it automatically on Backup start, and deletes it when Backup finishes)
HEAPDUMP_FILE=$CQ_HEAPDUMP_FOLDER/$DATE_TIME-heap.dump.hprof

# rsync log file
LOG_FILE=$CQ_HEAPDUMP_FOLDER/heapdump.log

# ------------------------------------------------
# Do not configure below this point
# ------------------------------------------------

# Log timestamp
date | tee -a $LOG_FILE

# Initiate CQ heap dump using curl, p1=true means only live objects will be dumped
curl -u $CQ_USER:$CQ_USER_PASSWORD -X POST --data "p0=$HEAPDUMP_FILE&p1=true" http://$HOST:$PORT/system/console/jmx/com.sun.management%3Atype%3DHotSpotDiagnostic/op/dumpHeap/java.lang.String%2Cboolean | tee -a $LOG_FILE
			
echo "Finished dumping the CQ/AEM JVM's heap to "$HEAPDUMP_FILE | tee -a $LOG_FILE

# Log timestamp
date | tee -a $LOG_FILE
echo $'\n'