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docker-erlang-example/advanced_examples/minikube-prom-graf/Docker-Cheat-Sheet.md
Kjell Winblad 6b805ff343 Refactoring: Copy Minikube, Erlang and Prometheus example 
This commit copies Lukas Larsson's (@garazdawi) and Siri Hansen's
(@sirihansen) example from:

https://github.com/erlang/docker-erlang-example/tree/minikube-prom-graf
2019-05-20 14:32:06 +02:00

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Docker Cheatsheet

  • Remove all containers that are not running:

      $ docker rm $(docker ps -aq -f status=exited)

  • Remove dangling images:

      $ docker rmi $(docker images -f dangling=true -q)

  • Attach to running docker:

      $ docker exec -i -t NameOrId /bin/sh

Core generation

  • /proc/sys/core_pattern is clearly persisted on the host. Taking note of its content before starting any endeavour is therefore highly encouraged.

  • dockers --privileged is necessary for a gdb session to catch the stack, without privileges, gdb just complains about No stack. Google still is hardly knowledgeable about this phenomenon...

  • setting ulimit on docker run works perfectly, for future googlers (syntax hard to find), a docker-compose example:

    ulimits: core: -1