ssh command

1 Create the key¶

https://blog.csdn.net/a753255157/article/details/49156029 https://blog.csdn.net/gulingfengze/article/details/69665223 https://help.github.com/articles/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent/

https://blog.csdn.net/xiaoluoshan/article/details/78177217?locationNum=8&fps=1

https://help.github.com/cn/github/authenticating-to-github/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent

Bash

ssh-keygen -t rsa -b 4096 -C "your_email@example.com"

2 linux实现免密码登陆¶

Bash

https://www.cnblogs.com/yixue2017/p/7559970.html

本质是：将本地id_rsa.pub文件的内容拷贝至远程服务器的~/.ssh/authorized_keys文件中

1. 将本地id_rsa.pub文件的内容拷贝至远程服务器的~/.ssh/authorized_keys文件中: 手工增加¶

2. scp -p ~/.ssh/id_rsa.pub root@:/root/.ssh/authorized_keys¶

3. ssh-copy-id -i ~/.ssh/id_rsa.put ¶

Method 1 && 3 is recommended.

3 对于新机器，可以使用下面简单的方法¶

在本地复制文件后，将整个.ssh文件夹全部复制到远程机器。假如新机器是recycler：

.ssh/config中加入如下内容：

加入下面四行测试成功，使用ssh remote_login_name进行登陆。

Bash

Host remote_login_name(随便取)
HostName 服务器地址/ip
User zhangkang
IdentityFile ~/.ssh/id_rsa

以下7行加入后没反应，应该是有错误

Bash

Host remote_login_name(随便取)
HostName 服务器地址/ip
User zhangkang
PubkeyAuthentication yes
PreferredAuthentications publickey
IdentitiesOnly yes
IdentityFile ~/.ssh/id_rsa

Bash

cp id_rsa.pub authorized_keys
scp -r .ssh shkzhang@recycler.torolab.ibm.com:~

Bash

Permissions 0644 for 'id_rsa' are too open.

$ chmod 0600 id_rsa

3. 指定key位置，可选¶

Bash

ssh -i .ssh/id_rsa 240vip@23.254.166.215