one of my docker container seems to grow and docker is not tracking the size. It will go up in size 20gigs in a few days and docker container ls --size still shows 1gb in size including virtual. I know it's 20gb because if I remove the container I get 20 gb freed. Is there a way to get an accurate measurement?
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user12341234
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Did you try using `-a` flag? – Alexander Santos Dec 18 '19 at 18:53
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do you use a Volume in your docker container ? – leachim742 Dec 18 '19 at 21:14
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there's no volume, it's the official elasticsearch image – user12341234 Dec 19 '19 at 17:27
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In my case, the container log was growing over a few months, and now reaching a tipping point.
My solution is to truncate the logs file (:facepalm:) as described here: How to clear the logs properly for a Docker container?
Verify logs size
check docker container sizes:
root@example:/var/lib/docker/containers# docker ps --size -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES SIZE
0117e099a9b0 ix "/docker-entrypoin..." 8 months ago Up 2 minutes px cx 2B (virtual 132MB)
...
check actual disk usage:
root@example:/var/lib/docker/containers# find . -type d -maxdepth 1 -exec du -hs {} 2>/dev/null \;
45G .
37G ./0117e099a9b04a36817c9a51f20f89571baeb3fe1b2a011695929d9bf381600f
...
Dive into the culprit (0117e099a9b0) to see that the log file which is not measured:
root@example:/var/lib/docker/containers/0117e099a9b04a36817c9a51f20f89571baeb3fe1b2a011695929d9bf381600f# ls -lssh
total 37G
37G -rw-r----- 1 root root 37G May 27 08:44 0117e099a9b04a36817c9a51f20f89571baeb3fe1b2a011695929d9bf381600f-json.log
...
helt
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