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#!/bin/bash
# SPDX-license-identifier: Apache-2.0
# ******************************
# Script to update the docker host configuration
# to enable Docker Remote API
# ******************************
if [ -f /etc/lsb-release ]; then
#tested on ubuntu 14.04 and 16.04
if grep -q "#DOCKER_OPTS=" "/etc/default/docker"; then
cp /etc/default/docker /etc/default/docker.bak
sed -i 's/^#DOCKER_OPTS.*$/DOCKER_OPTS=\"-H unix:\/\/\/var\/run\/docker.sock -H tcp:\/\/0.0.0.0:2375\"/g' /etc/default/docker
else
echo DOCKER_OPTS=\"-H unix:///var/run/docker.sock -H tcp://0.0.0.0:2375\" >> /etc/default/docker
fi
service docker restart
#docker start $(docker ps -aq)
elif [ -f /etc/system-release ]; then
#tested on centos 7.2
if grep -q "ExecStart=\/usr\/bin\/docker-current daemon" "/lib/systemd/system/docker.service"; then
cp /lib/systemd/system/docker.service /lib/systemd/system/docker.service.bak
sed -i 's/^ExecStart=.*$/ExecStart=\/usr\/bin\/docker daemon -H tcp:\/\/0.0.0.0:2375 -H unix:\/\/\/var\/run\/docker.sock \\/g' /lib/systemd/system/docker.service
systemctl daemon-reload
systemctl restart docker
else
echo "to be implemented"
fi
else
echo "OS is not supported"
fi
# Issue Note for Ubuntu
# 1. If the configuration of the file /etc/default/docker does not take effect after restarting docker service,
# you may try to modify /lib/systemd/system/docker.service
# commands:
# cp /lib/systemd/system/docker.service /lib/systemd/system/docker.service.bak
# sed -i '/^ExecStart/i\EnvironmentFile=-/etc/default/docker' /lib/systemd/system/docker.service
# sed -i '/ExecStart=\/usr\/bin\/dockerd/{;s/$/ \$DOCKER_OPTS/}' /lib/systemd/system/docker.service
# systemctl daemon-reload
# service docker restart
# 2. Systemd is a system and session manager for Linux, where systemctl is one tool for systemd to view and control systemd.
# If the file /lib/systemd/system/docker.service is modified, systemd has to be reloaded to scan new or changed units.
# 1) systemd and related packages are available on the PPA. To use the PPA, first add it to your software sources list as follows.
# add-apt-repository ppa:pitti/systemd
# apt-get update
# 2) system can be installed from the PPS as follows.
# apt-get install systemd libpam-systemd systemd-ui
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