系統環境
阿里雲ECS
# uname -r
4.4.162-1.el7.elrepo.x86_64
# cat /etc/centos-release
CentOS Linux release 7.5.1804 (Core)
# rpm -qa |grep kernel
kernel-lt-tools-libs-4.4.162-1.el7.elrepo.x86_64
kernel-lt-4.4.162-1.el7.elrepo.x86_64
kernel-lt-headers-4.4.162-1.el7.elrepo.x86_64
kernel-lt-devel-4.4.162-1.el7.elrepo.x86_64
kernel-lt-tools-4.4.162-1.el7.elrepo.x86_64
安裝Docker ce
官方文檔有詳細操作，可以參考
https://docs.docker.com/install/linux/docker-ce/centos/通過yum安裝
卸載舊版本(按需)
如果有舊版本docker,請使用以下指令卸載
# yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-selinux \
docker-engine-selinux \
docker-engine安裝依賴
# yum install yum-utils device-mapper-persistent-data lvm2docker 版本說明
Docker CE有兩種版本：
edge 版本每月發佈一次，主要面向那些喜歡嘗試新功能的用戶。
stable 版本每3個月發佈一次，維護期4個月。適用於希望更加容易維護的用戶（穩定版）。
edge版本 只能在當前月份獲得安全和錯誤修復。
stable版 在初始發佈後4個月內接收關鍵錯誤修復和安全問題的修補程序。
Docker EE和stable版本的版本號保持一致。CE版並非閹割版，而是改了個名稱；EE版則提供了一些收費的高級特性。添加docker ce的yum源(按需選擇其一)
stable 版本
# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
edge 版本
如果需要edge版本的docker,在上一條指令成功後啓用下面一行命令
# yum-config-manager --enable docker-ce-edge方式一： 直接安裝最新版本版本
# yum install docker-ce方式二： 安裝指定版本
列出版本
# yum list docker-ce --showduplicates | sort -r
* elrepo: mirrors.tuna.tsinghua.edu.cn
docker-ce.x86_64 18.06.1.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.0.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.03.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 18.03.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.12.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.12.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.09.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.09.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.2.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.3.ce-1.el7 docker-ce-stable
docker-ce.x86_64 17.03.2.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.0.ce-1.el7.centos docker-ce-stable
Available Packages
語法 yum install docker-ce-<版本號>
示例：
# yum install docker-ce-17.12.0.ce-1.el7.centos
# yum install docker-ce-18.06.1.ce-3.el7添加國內鏡像源
在國內下載比較快
Docker 官方中國區
https://registry.docker-cn.com
網易
http://hub-mirror.c.163.com
中國科學技術大學
https://docker.mirrors.ustc.edu.cn
阿里雲
https://dev.aliyun.com/
註冊登陸賬號後，左邊菜單選 > 鏡像加速器 > 獲取到以下累似地址(當然，你也可以直接使用我的)
https://314lfirc.mirror.aliyuncs.com最新版本的docker官方建議使用json格式修改
# vim /etc/docker/daemon.json
{
"registry-mirrors": ["https://314lfirc.mirror.aliyuncs.com"],
"live-restore": true,
"default-shm-size": "128M",
"max-concurrent-downloads": 10,
"oom-score-adjust": -1000,
"debug": false
}
啓動Docker與設置開機啓動docker
# systemctl start docker
# systemctl enable docker驗證
方法一：
# docker version
Client:
Version: 18.06.1-ce
API version: 1.38
Go version: go1.10.3
Git commit: e68fc7a
Built: Tue Aug 21 17:23:03 2018
OS/Arch: linux/amd64
Experimental: false
Server:
Engine:
Version: 18.06.1-ce
API version: 1.38 (minimum version 1.12)
Go version: go1.10.3
Git commit: e68fc7a
Built: Tue Aug 21 17:25:29 2018
OS/Arch: linux/amd64
Experimental: false
方法二：
# docker info
會出現類似下面的相關信息
#docker info
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 18.06.1-ce
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 468a545b9edcd5932818eb9de8e72413e616e86e
runc version: 69663f0bd4b60df09991c08812a60108003fa340
init version: fec3683
Security Options:
seccomp
Profile: default
Kernel Version: 4.4.162-1.el7.elrepo.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 3.859GiB
Name: jumpserver01
ID: 7V2P:3XOE:7IZD:V5FH:5IME:WMQ6:CGJH:7A3Y:7SUM:RKPJ:27C6:34GY
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Registry Mirrors:
https://314lfirc.mirror.aliyuncs.com/ > 這裏是添加的加速器
Live Restore Enabled: true
方法三：
通過運行hello-world 映像驗證是否已正確安裝，
# docker run hello-world
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
docker-compose 命令補全
1. 安裝docker-compose
# pip install docker-compose
# pip install --upgrade pip 這一行指令是升級pip版本的，按需。
2.找到對應當前compose版本號的命令補全
# docker-compose version
/usr/lib/python2.7/site-packages/requests/__init__.py:80: RequestsDependencyWarning: urllib3 (1.22) or chardet (2.2.1) doesn't match a supported version!
RequestsDependencyWarning)
docker-compose version 1.23.1, build b02f130 這次安裝的版本號是1.23.1
docker-py version: 3.5.1
CPython version: 2.7.5
OpenSSL version: OpenSSL 1.0.2k-fips 26 Jan 2017
有留意到吧，查看 docker-compose 的version時報不兼容的問題
解決它：
# pip uninstall urllib3 chardet
Uninstalling chardet-3.0.4:
Would remove:
/usr/bin/chardetect
/usr/lib/python2.7/site-packages/chardet-3.0.4.dist-info/*
/usr/lib/python2.7/site-packages/chardet/*
Would not remove (might be manually added):
/usr/lib/python2.7/site-packages/chardet/chardetect.py
/usr/lib/python2.7/site-packages/chardet/chardetect.pyo
/usr/lib/python2.7/site-packages/chardet/constants.py
/usr/lib/python2.7/site-packages/chardet/constants.pyo
Proceed (y/n)? y
Successfully uninstalled chardet-3.0.4
Uninstalling urllib3-1.22:
Would remove:
/usr/lib/python2.7/site-packages/urllib3-1.22.dist-info/*
/usr/lib/python2.7/site-packages/urllib3/*
Proceed (y/n)? y
Successfully uninstalled urllib3-1.22
重新安裝
# pip install requests
Successfully installed chardet-3.0.4 urllib3-1.22
再執行就沒問題了
# docker-compose version
docker-compose version 1.23.1, build b02f130
docker-py version: 3.5.1
CPython version: 2.7.5
OpenSSL version: OpenSSL 1.0.2k-fips 26 Jan 2017
3. 去https://github.com/docker/compose/
找到對應docker-compose版本的命令補全包
點開 Branch:master 邊上的小倒三角，選Tags ,點中你的版本號
進入以下目錄
compose/contrib/completion/這裏是你喜歡的shell類型/docker-compose
點開這個文件，對着Raw複製下載地址(否則不對)
下載到系統中,
wget -O/etc/bash_completion.d/docker-compose \
https://raw.githubusercontent.com/docker/compose/1.23.1/contrib/completion/bash/docker-compose
生效當前shell
# exec bash以非root用戶身份管理Docker
在安裝docker時，默認已經創建了docker用戶組，該docker組授予與root 用戶等效的權限。
# useradd -g docker docker
# passwd docker
設置這個普通用戶密碼
註銷並重新登錄，以便重新評估您的組成員身份。
如果在虛擬機上進行測試，則可能需要重新啓動虛擬機才能使更改生效。
$ docker run hello-world
此命令下載測試映像並在容器中運行它。當容器運行時，它會打印一條信息性消息並退出
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.