| 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/null setenforce 0 systemctl stop firewalld systemctl disable firewalld iptables -F systemctl stop NetworkManager &> /dev/null systemctl 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。