技術標籤：# Linux基礎linux運維系統初始化selinuxyum

1、關閉防火牆

systemctl stop firewalld.service
systemctl disable firewalld.service

2、關閉 SELinux 功能

sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config

3、關閉NetworkManager

systemctl stop NetworkManager.service
systemctl disable NetworkManager.service

4、備份並更換阿里源源

備份
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

更換阿里源
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

5、安裝常用軟體包

yum install -y bash-completion.noarch epel-release
yum install -y net-tools vim lrzsz wget tree screen lsof tcpdump

6、關閉 postfix

systemctl stop postfix.service
systemctl disable postfix.service