kubespray/roles/docker/templates/default-docker.j2

# Docker Upstart and SysVinit configuration file

# Customize location of Docker binary (especially for development testing).
#DOCKER="/usr/local/bin/docker"

# Use DOCKER_OPTS to modify the daemon startup options.
{% if overlay_network_plugin is defined and overlay_network_plugin == "calico" %}
DOCKER_OPTS="--bridge=cbr0 --iptables=false --ip-masq=false"
{% endif %}

# If you need Docker to use an HTTP proxy, it can also be specified here.
#export http_proxy="http://127.0.0.1:3128/"

# This is also a handy place to tweak where Docker's temporary files go.
#export TMPDIR="/mnt/bigdrive/docker-tmp"