Po-Yi Chou

undergraduate in EECS in NCTU

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Notes-Docker

tcpdump in docker cannot open

# Error message:
#tcpdump: error while loading shared libraries: libcrypto.so.1.0.0: cannot open shared object file: Permission denied
mv /usr/sbin/tcpdump /usr/bin/tcpdump

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Python causes IOError: [Errno 28] No space left on device

Python throw exception 'IOError: [Errno 28] No space left on device' while there's still lots of space on disk.  
'joblib' might try to parallelize jobs.  
When environment variable 'JOBLIB_TEMP_FOLDER' is not set, it consume '/dev/shm' to handle inter process communication.  
'/dev/shm' is by default 64MB in docker. 'joblib' might not detect such limitation.  
Any python module depending on 'joblib' such as 'sklearn' might encounter such exception.

Solution 1

JOBLIB_TEMP_FOLDER=/tmp python [args...]

Solution 2
Add following in python code.

import os
os.environ['JOBLIB_TEMP_FOLDER'] = '/tmp'

Solution 3
Increase /dev/shm size with such command.

docker run --shm-size=512m <image-name>