Script to take a memory dump every 4 hours

gistfile1.txt

#!/bin/bash

# Set variables
JAVA_PID=$1                   # Java process ID (pass as an argument to the script)
TASK_NAME=$2
DUMP_DIR="/tmp/TASK_NAME" # Directory to store dumps temporarily
S3_BUCKET="s3://com.myvipre.tcpdump.myvpv3"

# Ensure the dump directory exists
mkdir -p "$DUMP_DIR"

# Function to take memory dump and upload to S3
take_memory_dump() {
    TIMESTAMP=$(date +"%Y%m%d%H%M%S")
    DUMP_FILE="heapdump_${JAVA_PID}_${TIMESTAMP}.hprof"
    DUMP_PATH="$DUMP_DIR/$DUMP_FILE"

    echo "Taking memory dump of PID $JAVA_PID at $TIMESTAMP..."
    jmap -dump:live,format=b,file="$DUMP_PATH" "$JAVA_PID"

    if [ $? -eq 0 ]; then
        echo "Memory dump successful. Uploading $DUMP_FILE to S3..."
        aws s3 cp "$DUMP_PATH" "$S3_BUCKET/"

        if [ $? -eq 0 ]; then
            echo "Upload successful. Deleting local dump file."
            rm -f "$DUMP_PATH"
        else
            echo "Failed to upload $DUMP_FILE to S3. Keeping local file."
        fi
    else
        echo "Failed to take memory dump for PID $JAVA_PID."
    fi
}

# Run the function
take_memory_dump