Docker 实战之 CentOS7 系统环境配置

本文档详细介绍 Docker 实战之 CentOS7 系统环境配置，为后期安装 Docker 做准备。

0 优化环境

直接复制以下代码，优化环境，如果执行了一下代码，那么接下来的1和2步骤可以不用再操作了。

sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config &> /dev/nullsetenforce 0systemctl stop firewalldsystemctl disable firewalldiptables -Fsystemctl stop NetworkManager &> /dev/nullsystemctl disable NetworkManager &> /dev/null

1 关闭SELinux和防火墙

[root@Docker ]# vim /etc/selinux/config

SELINUX=disabled

[root@Docker ]# setenforce 0

[root@Docker ]# getenforce

Permissive

2 关闭Firewalld 和 iptables

[root@Docker ]# systemctl stop firewalld

[root@Docker ]# systemctl disable firewalld

[root@Docker ]# systemctl status firewalld

[root@Docker ]# iptables -F

3 配置 yum 源

[root@Docker ]# mv /etc/yum.repos.d/Cent* /tmp

[root@Docker ]# vim /etc/yum.repos.d/CentOS7.repo

[aliyun-os]

name=aliyun-os

baseurl=https://mirrors.aliyun.com/centos/7/os/x86_64/

enabled=1

gpgcheck=0

[aliyun-epel]

name=aliyun-epel

baseurl=https://mirrors.aliyun.com/epel/7/x86_64/

enabled=1

gpgcheck=0

[aliyun-extra]

name=aliyun-extra

baseurl=https://mirrors.aliyun.com/centos/7/extras/x86_64/

enabled=1

gpgcheck=0

[root@Docker ]# yum clean all && yum makecache

添加 epel 源

[root@Docker ]# yum install epel-release -y

添加 docker-ce 源

[root@Docker ]# yum install -y yum-utils

[root@Docker ]# yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

[root@Docker ]# cat /etc/yum.repos.d/docker-ce.repo 

[docker-ce-stable]

name=Docker CE Stable - $basearch

baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/$basearch/stable

enabled=1

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-stable-debuginfo]

name=Docker CE Stable - Debuginfo $basearch

baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/debug-$basearch/stable

enabled=0

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-stable-source]

name=Docker CE Stable - Sources

baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/source/stable

enabled=0

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-edge]

name=Docker CE Edge - $basearch

baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/$basearch/edge

enabled=0

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-edge-debuginfo]

name=Docker CE Edge - Debuginfo $basearch

baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/debug-$basearch/edge

enabled=0

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-edge-source]

name=Docker CE Edge - Sources

baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/source/edge

enabled=0

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-test]

name=Docker CE Test - $basearch

baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/$basearch/test

enabled=0

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-test-debuginfo]

name=Docker CE Test - Debuginfo $basearch

baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/debug-$basearch/test

enabled=0

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-test-source]

name=Docker CE Test - Sources

baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/source/test

enabled=0

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-nightly]

name=Docker CE Nightly - $basearch

baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/$basearch/nightly

enabled=0

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-nightly-debuginfo]

name=Docker CE Nightly - Debuginfo $basearch

baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/debug-$basearch/nightly

enabled=0

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-nightly-source]

name=Docker CE Nightly - Sources

baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/source/nightly

enabled=0

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[root@Docker ]# yum clean all && yum makecache

4 配置 hostname

[root@Docker ]# vim /etc/hostname

Docker

5 配置/etc/hosts

[root@Docker ]# vim /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhostlocaldomain4

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.10.7 Docker

[root@Docker ]# ping $HOSTNAME

6 同步时间

[root@Docker ]# find / -name Shanghai

/usr/share/zoneinfo/Asia/Shanghai

/usr/share/zoneinfo/posix/Asia/Shanghai

/usr/share/zoneinfo/right/Asia/Shanghai

[root@Docker ]# cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

cp: overwrite ‘/etc/localtime’? y

[root@Docker ]# yum install -y ntp ntpdate

[root@Docker ]# systemctl enable ntpd

[root@Docker ]# systemctl start ntpd

[root@Docker ]# ntpdate cn.pool.ntp.org

[root@Docker ]# ntpdate 0.rhel.pool.ntp.org

手动改时间： date -s "2019-09-09 19:19"

7 配置 pip 镜像源，方便快速下载python库（这一步很重要）

[root@Docker ]# mkdir /.pip

[root@Docker ]# vim  /.pip/pip.conf  #写入下以内容

[global]

index-url = http://mirrors.aliyun.com/pypi/simple/

[install]

trusted-host=mirrors.aliyun.com

8  配置网卡信息

[root@Docker ]# vim /etc/sysconfig/network-scripts/ifcfg-ens33

TYPE=Ethernet

PROXY_METHOD=none

BROWSER_ONLY=no

BOOTPROTO=static

DEFROUTE=yes

IPV4_FAILURE_FATAL=no

NAME=ens33

DEVICE=ens33

ONBOOT=yes

IPADDR=192.168.10.7

GATEWAY=192.168.10.2

NETMASK=255.255.255.0

总结

以上的操作就是 CentOS7 系统环境配置的过程，为安装 Docker 做好准备。想看怎么安装 Docker 的朋友请持续关注我的文章，希望我的文章能给大家带来帮助。