Ubuntu安装

准备Ubuntu

从Ubuntu官网下载镜像

安装ubuntu

虚拟机安装ubuntu

启用ssh登录root

修改root用户密码

sudo passwd root

切换到root用户

su -

修改配置文件, 找到PermitRootLogin，将后面的字符串修改为yes

vi /etc/ssh/sshd_config
PermitRootLogin yes

重启ssh服务

service sshd restart

Ubuntu 16.04 配置固定IP

虚拟机采用NAT模式,编辑配置文件

vi /etc/network/interfaces

文件内容如下，修改相应的IP地址、网关、子网掩码以及DNS

auto ens33
iface ens33 inet static
network 192.168.174.0
netmask 255.255.255.0
address 192.168.174.3
gateway 192.168.174.2
dns-nameservers 114.114.114.114

重启网卡,若无效果则重启系统

sudo /etc/init.d/networking restart

Ubuntu 18.04 配置固定IP

虚拟机采用NAT模式,编辑配置文件

vi /etc/netplan/50-cloud-init.yaml

文件内容如下，修改相应的IP地址、网关、子网掩码以及DNS

network:
    ethernets:
        ens32:
            addresses: [192.168.174.3/24]
            optional: true
            gateway4: 192.168.174.2
            nameservers:
              addresses: [114.114.114.114, 8.8.8.8]
    version: 2

重启网卡

netplan apply

更换阿里源

deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse