via thomas Lac

How to configure LoadBalancer (ELB) populated by k8s in aws (eks)

python3 log to file AND stdout
import logging
logging.basicConfig(handlers=[logging.FileHandler('/var/log/runner/process1.log'),logging.StreamHandler()],format='%(asctime)s %(levelname)s %(message)s',level=logging.INFO)

logging.info('foo')

Encore mieux pour supporter le logrotate sans copytruncate :
import logging.handlers
logging.basicConfig(handlers=[logging.handlers.WatchedFileHandler('/var/log/worker/worker1.log'),logging.StreamHandler()],format='%(asctime)s %(levelname)s %(message)s',level=logging.INFO)

/var/log/worker/*.log {
monthly
rotate 12
compress
delaycompress
missingok
notifempty
create 644 root root
}

Python 2:

import logging as loggingg

logging = loggingg.getLogger('simple_example')
logging.setLevel(loggingg.INFO)

formatter = loggingg.Formatter('%(asctime)s %(levelname)s %(message)s')

console_handler = loggingg.StreamHandler()
console_handler.setLevel(loggingg.INFO)
console_handler.setFormatter(formatter)

file_handler = loggingg.FileHandler('/var/log/worker/worker3.log')
file_handler.setLevel(loggingg.INFO)
file_handler.setFormatter(formatter)

logging.addHandler(console_handler)
logging.addHandler(file_handler)

Or "how to search text in git diff history"
git log -p -S "string"

TIL

Beanstalk is a little bit... magic. Dunno yet if its good or not :

Elastic Beanstalk creates log volumes on the container instance, one for each container, at /var/log/containers/containername. These volumes are named awseb-logs-containername and should be mounted to the location within the container file structure where logs are written.

For example, the following mount point maps the nginx log location in the container to the Elastic Beanstalk–generated volume for the nginx-proxy container.

{
"sourceVolume": "awseb-logs-nginx-proxy",
"containerPath": "/var/log/nginx"
}

And all this logs can be copied into s3 automagically: http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/command-options-general.html#command-options-general-elasticbeanstalkhostmanager