修改镜像源
修改镜像源配置文件/etc/apt/sources.list,内如如下。修改之前可以先做一个备份。
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
执行如下命令使镜像源生效
sudo apt-get update
sudo apt-get upgrade
启用root用户
- 使用
sudo passwd root设置root用户密码 su root命令测试是否可以进入root用户
启用 root用户登陆ssh
- 修改
/etc/ssh/sshd_config文件,修改内如如下
# Authentication:
LoginGraceTime 10m
PermitRootLogin yes
StrictModes yes
- 执行
sudo service ssh restart重启ssh 生效