ubuntu18(修改root密码、设置root远程登陆、换源、设置静态ip(这里是18版本))

• 修改root密码

sudo passwd root

• 设置root可以远程登录

 默认不带ssh，所以需要安装一下ssh

sudo apt install openssh-server

 允许root用户登录，编辑sshd_config

sudo vim /etc/ssh/sshd_config
找到# Authentication项下的
PermitRootLogin prohibit-password改成PermitRootLogin yes

重启ssh搞定

sudo systemctl restart sshd

• 更换国内源

备份

sudo cp /etc/apt/sources.list /etc/apt/sources_init.list

编辑/etc/apt/sources.list 更换阿里源

阿里源
deb http://mirrors.aliyun.com/ubuntu/ xenial main
deb-src http://mirrors.aliyun.com/ubuntu/ xenial main

deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main

deb http://mirrors.aliyun.com/ubuntu/ xenial universe
deb-src http://mirrors.aliyun.com/ubuntu/ xenial universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates universe

deb http://mirrors.aliyun.com/ubuntu/ xenial-security main
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main
deb http://mirrors.aliyun.com/ubuntu/ xenial-security universe
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security universe

更新

apt-get update
apt-get -f install
apt-get upgrade

 根据网卡编号 编辑/etc/netplan/50-cloud-init.yaml 设置静态ip 我这里是ens33

network:
    ethernets:
        ens33:
            addresses: [192.168.3.244/24, ]
            dhcp4: no
            dhcp6: no
            gateway4:  192.168.3.1
            nameservers:
                addresses: [8.8.8.8, 9.9.9.9]
    version: 2

 立即生效

netplan apply