centos7 开启 关闭 NetworkManager

cat <<EOF >/etc/NetworkManager/nm-system-settings.conf[main]plugins=ifupdown,keyfile[ifupdown]managed=trueEOFsystemctl start NetworkManagersystemctl enable NetworkManager

systemctl stop NetworkManager systemctl disable NetworkManager rm -rf /var/lib/NetworkManager/NetworkManager.state /etc/NetworkManager/nm-system-settings.confreboot

centos7的网卡重启方法

327051661关注0人评论276316人阅读2018-02-27 11:11:27

1、centos6的网卡重启方法：service network restart
centos7的网卡重启方法：systemctl restart network

2、DNS配置文件：cat /etc/resolv.conf
设置主机和IP绑定信息：cat /etc/hosts
设置主机名：cat /etc/hostname

3、可以使用nmtui文本框方式修改IP

4、关闭防火墙并设置开机不启动
查看防火墙状态：systemctl status firewalld.service
关闭：systemctl stop firewalld
开启：systemctl start firewalld
开机自动关闭：systemctl disable firewalld
开机自动启动：systemctl enable firewalld
查看开机是否启动：chkconfig --list|grep network(RHLE6)

5、临时和永久关闭Selinux
临时关闭：
_getenforce
Enforcing

_setenforce 0
setenforce:SELinux is disabled

永久关闭：
_vim /etc/selinux/config

配置步骤

根据官网的说明，分别有 CentOS 6、CentOS 7、CentOS 8等配置操作步骤。

（1）、备份，将 CentOS-Base.repo 为CentOS-Base.repo.backup

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup1

（2）、下载新的 http://mirrors.aliyun.com/repo/Centos-7.repo,并命名为CentOS-Base.repo

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
或者curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo123

（3）、清除缓存

yum clean all     # 清除系统所有的yum缓存yum makecache     # 生成yum缓存12