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garethahealy/jcmd.sh

Created January 5, 2017 18:03
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java heapdump for docker
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jcmd.sh
#!/bin/bash
docker exec $1 ps -deaf
echo -n "PID for Java: "
read pid
docker exec $1 jcmd $pid GC.heap_dump /tmp/docker.hprof
docker cp $1:/tmp/docker.hprof .
docker exec $1 rm /tmp/docker.hprof
@charybr
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charybr commented Apr 9, 2019

Hi,

Thanks, for sharing this!.

jcmd throws error complaining about /tmp/docker.hprof. So line 8 should be like below:

docker exec $1 sh -c 'jcmd $pid GC.class_histogram > /tmp/docker.hprof'

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