Docker

1-确认系统信息

# cat /etc/redhat-release CentOS Linux release 7.2.1511 (Core) # uname -aLinux CentOS-7 3.10.0-327.el7.x86_64 #1 SMP Thu Nov 19 22:10:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

2-安装docker

# yum -y install docker

3-关闭SELinux和启动docker服务

关闭SELinux

• 永久方法：修改/etc/selinux/config文件中设置SELINUX=disabled ，然后重启。

• 临时方法：执行setenforce 0命令设置SELinux成为permissive模式

  sudo systemctl status firewalld.servicesudo systemctl stop firewalld.service          sudo systemctl disable firewalld.service

启动docker服务
[root@CentOS-7 ~]# systemctl start docker.service

设置自启动docker服务

[root@CentOS-7 ~]# systemctl enable docker.serviceCreated symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.[root@CentOS-7 ~]# systemctl is-enabled docker.serviceenabled[root@CentOS-7 ~]# 

4-设置docker代理

# vim /etc/sysconfig/docker
添加如下内容
HTTP_PROXY=http://10.144.1.10:8080
HTTPS_PROXY=https://10.144.1.10:8080
FTP_PROXY=ftp://10.144.1.10:8080

5-重启docker

# systemctl daemon-reload
# systemctl restart docker

6-安装验证

运行官方镜像hello-world文件

# docker run hello-worldUnable to find image 'hello-world:latest' locallyTrying to pull repository docker.io/library/hello-world ... latest: Pulling from docker.io/library/hello-worldc04b14da8d14: Pull complete Digest: sha256:0256e8a36e2070f7bf2d0b0763dbabdd67798512411de4cdcf9431a1feb60fd9Status: Downloaded newer image for docker.io/hello-world:latestHello 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. 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 bashShare images, automate workflows, and more with a free Docker Hub account: https://hub.docker.comFor more examples and ideas, visit: https://docs.docker.com/engine/userguide/# # docker imagesREPOSITORY              TAG                 IMAGE ID            CREATED             SIZEdocker.io/hello-world   latest              c54a2cc56cbb        5 months ago        1.848 kB

另外一种Docker代理设置方法：

修改docker.service文件
# vim /usr/lib/systemd/system/docker.service
在[Service]部分添加如下内容
Environment="HTTP_PROXY=http://10.144.1.10:8080"
Environment="HTTPS_PROXY=https://10.144.1.10:8080"
Environment="FTP_PROXY=ftp://10.144.1.10:8080"

或者，另外创建代理文件

# mkdir /etc/systemd/system/docker.service.d# touch /etc/systemd/system/docker.service.d/proxy.conf# vim /etc/systemd/system/docker.service.d/proxy.conf

增加以下内容
[Service]
Environment="HTTP_PROXY=http://10.144.1.10:8080"
Environment="HTTPS_PROXY=https://10.144.1.10:8080"
Environment="FTP_PROXY=ftp://10.144.1.10:8080"

重启docker
# systemctl daemon-reload
# systemctl restart docker

检查docker环境变量是否加载

# systemctl show docker --property EnvironmentEnvironment=GOTRACEBACK=crash HTTP_PROXY=http://10.144.1.10:8080 HTTPS_PROXY=https://10.144.1.10:8080 FTP_PROXY=ftp://10.144.1.10:8080