JVM collector for docker

docker_jvm_collector.sh

#!/bin/bash
#
# usage ./jvm_collector.sh <container name> <interval>
container_name=$1
interval=$2

# get jvm pid 
jpid=$(docker exec -ti `docker ps --filter name=$container_name --format "{{.Names}}"` ps -ef |grep java |grep -v grep |awk '{print $2}')

while true; do
	# Heap Stats
	heap_used=$(docker exec -ti `docker ps --filter name=$container_name --format "{{.Names}}"` jmap -histo $jpid |grep Total |awk '{print $3/1024/1024}')
	echo "$(date +'%m-%d-%y-%H:%M:%S') $heap_used" >> heap.log

	# Threads Stats
	docker exec -ti `docker ps --filter name=$container_name --format "{{.Names}}"` jstack $jpid > /tmp/threads.log
	b=`grep -c BLOCK /tmp/threads.log`
	ru=`grep -c RUNN /tmp/threads.log`
	w=`grep -c WAITING /tmp/threads.log`
	echo "$(date +'%m-%d-%y-%H:%M:%S') - running:$ru blocked:$b waiting:$w" >> threadstats.log
	sleep $interval
done