ssh秘钥登录

输入命令后提示都按回车

su -

root@k8s-master:~# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:EVbXZXIDFoozyv3vCBvpUHHDr0RvXBklcybPr+CnO5o root@k8s-master
The key's randomart image is:
+---[RSA 2048]----+
|        o.. .=B+O|
|       . .o.o .%+|
|        .= *   oo|
|      . o.* = . .|
|       oSo ..=  .|
|        . +.o. . |
|       . + o. o  |
|        o +.+o   |
|         oEo+=   |
+----[SHA256]-----+

查看生成的秘钥

root@k8s-master:~# ls -l .ssh/
total 8
-rw------- 1 root root 1823 Feb 26 00:58 id_rsa
-rw-r--r-- 1 root root  397 Feb 26 00:58 id_rsa.pub

ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.56.201

允许root远程登录

debian@debian:~# sudo vi /etc/ssh/sshd_config

找到

#PermitRootLogin prohibit-password

在下面一行添加

PermitRootLogin yes

root@debian:~# systemctl restart sshd

Examples

ssh debian@127.0.0.1 -p6000 -L 3399:127.0.0.1:3389
ssh -p2200 -R 9200:127.0.0.1:9200 root@192.168.0.1
ssh root@192.168.0.1 "cd /data/deploy/; ./start.sh"