ubuntu安装docker环境

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安装docker
    各个操作系统的安装可以访问：
5 O7 k" u, \2 V& Q1 l     https://docs.docker.com/engine/installation
docker分为开源的免费的CE版本和收费的EE版本：
( h( {( s, w# S: ?以下实验环境，采用在ubuntu16.04操作系统上安装，使用docker版本为Docker CE版本：
          配置docker的apt源
              安装包：允许apt命令https访问docker源：
4 H4 t4 M# }8 ?) V$sudo apt-get install \ apt-transport-https \ ca-certificates \ curl \ software-properties-common
   $sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common
添加docker官方的GPG key
   
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

admin

将docker的源添加到/etc/apt/sources.list
    sudo add-apt-repository  "deb [arch=amd64] https://download.docker.com/linux/ubuntu \ $(lsb_release -cs) stable"
安装docker
7 b! G  D9 K, H( O      更新源：
, d, o1 |# f& U2 U     sudo apt-get update
) q1 G, b0 @3 t, r     安装docker-ce包
: \4 M( P9 j7 I$ S        apt-get install -y docker-ce

4 u  A3 T8 Z' P" u) X    安装更新了，安装失败：


# @8 v( u) j" L; S. y     sudo grep device-mapper /proc/devices
252 device-mapper


+ Y5 s. N0 |8 }* b9 b$ p/ W: E如果没有出现就需要执行下面命令
    root@dockerserver:~# modprobe dm_mod
root@dockerserver:~# sudo grep device-mapper /proc/devices
% O. ~% L7 W8 X6 G& ^. d  [/ a252 device-mapper

安装docker

这一步很关键，如果不是在天朝一个命令即可搞定：  $ sudo apt-get install -y docker.io，但是我们最好使用国内的镜像源安装docker，不然那个安装速度真是比乌龟都慢。

这里我们使用 DaoCloud 镜像站点(国内的一家公司)，高速安装Docker，这里附上DaoCloud 官方安装文档：http://guide.daocloud.io/dcs/docker-9152677.html
: j7 r  I! O8 l$ curl -sSL https://get.daocloud.io/docker | sh

安装完docker以后，可以使用docker info命令来确认docker是否已经正常安装并运行。
# W/ i+ X2 f( U: b

admin

docker info
7 L/ M2 Z$ ?) L0 SContainers: 0
Running: 0
Paused: 0
Stopped: 0
( {( Y% X" h. K" D6 LImages: 0
( e3 Q8 E7 t2 E4 l( {Server Version: 1.13.1
Storage Driver: aufs
Root Dir: /var/lib/docker/aufs
' ~" @# V1 o; o Backing Filesystem: extfs
Dirs: 0
Dirperm1 Supported: true
Logging Driver: json-file
" S; `' Q  {2 ^; CCgroup Driver: cgroupfs
% R8 C5 o% Y' I! D! mPlugins:
Volume: local
Network: bridge host macvlan null overlay
Swarm: inactive
' E# U- h2 D2 X+ FRuntimes: runc
9 `  h7 Y" f3 }1 |Default Runtime: runc
5 {4 M% q8 {. H# t6 ^. U0 t0 `* bInit Binary: docker-init
containerd version:  (expected: aa8187dbd3b7ad67d8e5e3a15115d3eef43a7ed1)
& m* e0 B, S# k& orunc version: N/A (expected: 9df8b306d01f59d3a8029be411de015b7304dd8f)
8 d+ Q1 q% F* N5 H% l! }init version: N/A (expected: 949e6facb77383876aeff8a6944dde66b3089574)
Security Options:
apparmor
seccomp
  Profile: default
Kernel Version: 4.4.0-21-generic
' }  H; _" A& t; JOperating System: Ubuntu 16.04 LTS
OSType: linux
Architecture: x86_64
& X* j4 C. q& y( {5 CCPUs: 1
# b  K9 ~7 x* V# aTotal Memory: 1.937 GiB
2 P% `4 a6 n* E4 IName: dockerserver
ID: GIRM:EVPM:YTKL:DEVT:L2HM:ELGM:EYXU:3PDE:CHJB:D63L:KXWY:HSOD
) l" V2 N& S- V6 iDocker Root Dir: /var/lib/docker
$ U/ v' E) M- Y8 x3 {$ [% i2 lDebug Mode (client): false
& r! ~! f7 v2 _" tDebug Mode (server): false
Registry: https://index.docker.io/v1/
WARNING: No swap limit support
0 ^5 d0 @/ E; @' Q& XExperimental: false
* r0 q0 W6 s! d  |/ S9 \- S6 MInsecure Registries:
127.0.0.0/8
% Y! }' \1 U$ V! a: ULive Restore Enabled: false

admin

使用sudo systemctl status docker命令可以查看docker运行状态
sudo systemctl status docker
● docker.service - Docker Application Container Engine
) j7 N2 F- D) [2 S$ O0 a6 a. d   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
   Active: active (running) since Thu 2018-02-15 23:51:11 CST; 2min 31s ago
     Docs: https://docs.docker.com
: D! Q* O6 w, k* `9 G* w" h' W& ^ Main PID: 9615 (dockerd)
   CGroup: /system.slice/docker.service
           ├─9615 /usr/bin/dockerd -H fd://
( |& b5 y, P. R- }+ r( u% A           └─9620 containerd -l unix:///var/run/docker/libcontainerd/docker-containerd.sock --metrics-interval=0 --start-timeout 2m --state-dir /var/run/docker/libcontainerd/contai
* t8 l  R( z! p0 g# i2 f2 V; C
Feb 15 23:51:11 dockerserver dockerd[9615]: time="2018-02-15T23:51:11.836995993+08:00" level=info msg="Loading containers: done."
# I. b5 k0 p' N2 ^" sFeb 15 23:51:11 dockerserver dockerd[9615]: time="2018-02-15T23:51:11.841195945+08:00" level=warning msg="Couldn't run auplink before unmount /var/lib/docker/tmp/docker-aufs-union3
* X  q% I3 [# `Feb 15 23:51:11 dockerserver dockerd[9615]: time="2018-02-15T23:51:11.850940606+08:00" level=warning msg="failed to retrieve runc version: unknown output format: runc version spec:
+ ~4 D. D! h0 C" L# E, oFeb 15 23:51:11 dockerserver dockerd[9615]: time="2018-02-15T23:51:11.852341493+08:00" level=warning msg="failed to retrieve docker-init version: unknown output format: tini versio
! H0 ^) d! T: E" {Feb 15 23:51:11 dockerserver dockerd[9615]: time="2018-02-15T23:51:11.852810750+08:00" level=info msg="Daemon has completed initialization"
Feb 15 23:51:11 dockerserver dockerd[9615]: time="2018-02-15T23:51:11.853033183+08:00" level=info msg="Docker daemon" commit=092cba3 graphdriver=aufs version=1.13.1
" u/ I2 c3 H! X) K& zFeb 15 23:51:11 dockerserver systemd[1]: Started Docker Application Container Engine.
: U; v8 q7 f0 RFeb 15 23:51:11 dockerserver dockerd[9615]: time="2018-02-15T23:51:11.867400168+08:00" level=info msg="API listen on /var/run/docker.sock"
Feb 15 23:52:41 dockerserver dockerd[9615]: time="2018-02-15T23:52:41.318996443+08:00" level=warning msg="failed to retrieve runc version: unknown output format: runc version spec:
Feb 15 23:52:41 dockerserver dockerd[9615]: time="2018-02-15T23:52:41.322871285+08:00" level=warning msg="failed to retrieve docker-init version: unknown output format: tini versio
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8 U1 M3 C" S" l  [* S8 V同样可以使用sudo systemctl stop/start/restart docker 来停止/启动/重启docker服务。

admin

使用sudo systemctl stop/start/restart docker 来停止/启动/重启docker服务。

admin

root@dockerserver:~# service docker status
  e4 u4 M5 }- X6 L) {. N● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
: U! [) D8 w. d: ?   Active: active (running) since Wed 2018-06-20 21:23:55 CST; 6min ago
     Docs: https://docs.docker.com
Main PID: 12816 (dockerd)
( T7 v3 p) D( ~9 p+ V% }. U9 \   CGroup: /system.slice/docker.service
) ^, J$ D5 d' V+ A( a           ├─12816 /usr/bin/dockerd -H fd://
4 |* |; W) \. x  A! Q# f' C  Q: j7 m           └─12821 containerd -l unix:///var/run/docker/libcontainerd/docker-containerd.so
3 `# K4 L( K; ~
Jun 20 21:23:55 dockerserver dockerd[12816]: time="2018-06-20T21:23:55.068545836+08:00" le
Jun 20 21:23:55 dockerserver dockerd[12816]: time="2018-06-20T21:23:55.180055748+08:00" le
5 W# Q, n) |7 q; g1 p$ y: GJun 20 21:23:55 dockerserver dockerd[12816]: time="2018-06-20T21:23:55.252103969+08:00" le
Jun 20 21:23:55 dockerserver dockerd[12816]: time="2018-06-20T21:23:55.257639954+08:00" le
( c6 F  v- c) |1 gJun 20 21:23:55 dockerserver dockerd[12816]: time="2018-06-20T21:23:55.265876607+08:00" le
Jun 20 21:23:55 dockerserver dockerd[12816]: time="2018-06-20T21:23:55.267256613+08:00" le
Jun 20 21:23:55 dockerserver dockerd[12816]: time="2018-06-20T21:23:55.267785022+08:00" le
: B/ U* C8 b$ ?- ~- d- W9 D+ TJun 20 21:23:55 dockerserver dockerd[12816]: time="2018-06-20T21:23:55.268014925+08:00" le
9 W! [/ H* g% z# t0 Z& i0 c  ~Jun 20 21:23:55 dockerserver systemd[1]: Started Docker Application Container Engine.
* T( C0 P6 i6 M9 o( h7 |9 V( L$ W/ VJun 20 21:23:55 dockerserver dockerd[12816]: time="2018-06-20T21:23:55.284974707+08:00" le
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