Docker compose files should set sensible ulimits for max file handles #256
Description
On some OSes/Docker versions, certain processes will try to enumerate all possible file handles when run in Docker. To prevent this causing a hang on start up if the user hasn't edited the Docker daemon config to limit the max number of file handles.
To avoid frustration, it's probably a good idea to set the max. file handle limits in the ulimits section of the relevant Docker Compose files in Munin.
In order to docker compose up the $/deploy/docker-compose.prod.yml file, I had to add ulimits to jm_proc, istore_proc, aeo_svdc_proc and zookeeper. Used a value of 65536 for both soft and hard limit.
There are many compose files though, so I think it's probably necessary to repeat this in all of them (or at least make some equivalent change take effect in all of them by whatever means)