有以下几种方式：

1. 通过系统自带包安装（可能不是最新版）

$ sudo apt-get update

$ sudo apt-get install -y docker.io

$ sudo ln -sf /usr/bin/docker.io /usr/local/bin/docker

$ sudo sed -i '$acomplete -F _docker docker' /etc/bash_completion.d/docker.io

2. 通过Docker源安装最新版本

$ sudo apt-get install apt-transport-https

$ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9

$ sudo bash -c "echo deb https://get.docker.io/ubuntu docker main > /etc/apt/sources.list.d/docker.list"

$ sudo apt-get update

$ sudo apt-get install lxc-docker

配置DOCKER_OPS

修改docker.service

root@docker:/opt/software/DOCKER-FILES/elasticsearch# vim  /lib/systemd/system/docker.service

[Unit]

Description=Docker Application Container Engine

Documentation=https://docs.docker.com

After=network.target docker.socket

Requires=docker.socket

[Service]

Type=notify

# the default is not to use systemd for cgroups because the delegate issues still

# exists and systemd currently does not support the cgroup feature set required

# for containers run by docker

EnvironmentFile=/etc/default/docker

ExecStart=/usr/bin/dockerd -H fd:// $DOCKER_OPTS

ExecReload=/bin/kill -s HUP $MAINPID

# Having non-zero Limit*s causes performance problems due to accounting overhead

# in the kernel. We recommend using cgroups to do container-local accounting.

LimitNOFILE=infinity

LimitNPROC=infinity

LimitCORE=infinity

# Uncomment TasksMax if your systemd version supports it.

# Only systemd  and above support this version.

TasksMax=infinity

TimeoutStartSec=

# set delegate yes so that systemd does not reset the cgroups of docker containers

Delegate=yes

# kill only the docker process, not all processes in the cgroup

KillMode=process

[Install]

WantedBy=multi-user.target

修改/etc/default/docker。

root@docker:/opt/software/DOCKER-FILES/elasticsearch# vim /etc/default/docker

# Docker Upstart and SysVinit configuration file

#

# THIS FILE DOES NOT APPLY TO SYSTEMD

#

#   Please see the documentation for "systemd drop-ins":

#   https://docs.docker.com/engine/articles/systemd/

#

# Customize location of Docker binary (especially for development testing).

#DOCKERD="/usr/local/bin/dockerd"

# Use DOCKER_OPTS to modify the daemon startup options.

#DOCKER_OPTS="--dns 8.8.8.8 --dns 8.8.4.4"

DOCKER_OPTS="--insecure-registry 192.168.0.240"

# 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

重启docker。

root@docker:/opt/software/DOCKER-FILES/elasticsearch# /etc/init.d/docker restart

使用以下命令验证安装：

$ docker -v
Docker version 1.9.1, build a34a1d5

巴特西

Ubuntu14.04下安装docker 1.9

配置DOCKER_OPS

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