ssh与OpenSSH

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服务端安装并启动Openssh服务

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sudo apt-get update
sudo apt-get install openssh-server
sudo service ssh start

服务端授权客户端访问

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# 修改授权访问文件，若无此文件则新建
vim ~/.ssh/authorized_keys
# 按行输入须授权的客户端ssh公钥即可

客户端配置公私钥对

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sudo ssh-keygen -t rsa -f ~/.ssh/id_rsa_xxx -C "..."
sudo service ssh restart

添加客户端ssh公钥到服务器授权访问列表

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sudo ssh-copy-id -i ~/.ssh/id_rsa.pub user@server_ip

使用ssh进行免密登录

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sudo ssh user@server_ip

客户端配置n个Key访问n个服务

https://appkfz.com/2015/06/18/git-ssh-key/

多站点使用不同的ssh key

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Host company
  HostName company.com
  User git
  IdentityFile ~/.ssh/user1
Host github
  HostName github.com
  User git
  IdentityFile ~/.ssh/user2

同一站点使用不同的ssh key

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Host gitcafe-site1
  HostName gitcafe.com
  User git
  IdentityFile ~/.ssh/user1
Host gitcafe-site2
  HostName gitcafe.com
  User git
  IdentityFile ~/.ssh/user2

Q&A

ssh-add报错

case1

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Error connecting to agent: Connection refused

重启ssh-agent

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exec ssh-agent zsh
eval `ssh-agent -s`

case2

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No user exists for uid 501

重启终端即可

多客户端SSH KEY

配置了多个KEY，但是jenkins验证失败，尝试重启jenkins所在的web服务器