个大vps厂商root密码设置

甲骨文切换root登录

echo root:你要设置的密码sudo chpasswd root
sudo sed -i ‘s/^#\?PermitRootLogin./PermitRootLogin yes/g’ /etc/ssh/sshd_config; sudo sed -i ‘s/^#\?PasswordAuthentication./PasswordAuthentication yes/g’ /etc/ssh/sshd_config;
sudo service sshd restart

谷歌云root登录

sudo -i //切换到root用户
vi /etc/ssh/sshd_config //编辑文件

Authentication:

PermitRootLogin yes //默认为no，需要开启root用户访问改为yes

Change to no to disable tunnelled clear text passwords

PasswordAuthentication yes //默认为no，改为yes开启密码登陆
service sshd restart

Centos设置root登录密码

sudo -i
vi /root/.ssh/authorized_keys
vi /etc/ssh/sshd_config
passwd