(SSH) GitHub、GitLab、Gitee添加SSH认证

一)生成SSH-key

• 打开终端，执行如下指令：

// github ---- SSH-key
ssh-keygen -t rsa -C "aaa@xx.com" -f ~/.ssh/github_id_rsa
// gitlab ---- SSH-key
ssh-keygen -t rsa -C "bbb@xx.com" -f ~/.ssh/gitlab_id_rsa
// gitee ---- SSH-key
ssh-keygen -t rsa -C "ccc@xx.com" -f ~/.ssh/gitee_id_rsa

二)配置config文件（可选步骤）

• cd ~/.ssh
• touch ~/.ssh/config
• 添加如下配置：

# github
Host github.com
HostName github.com
PreferredAuthentications publickey
IdentityFile ~/.ssh/github_id_rsa

# gitlab
Host gitlab.com
HostName gitlab.com
PreferredAuthentications publickey
IdentityFile ~/.ssh/gitlab_id_rsa

# gitee
Host gitee.com
HostName gitee.com
PreferredAuthentications publickey
IdentityFile ~/.ssh/gitee_id_rsa

三)上传public-key(自行上传至目标网站)

• cd ~/.ssh
• cat github_id_rsa.pub
• cat gitlab_id_rsa.pub
• cat gitee_id_rsa.pub

// GitHub
复制"github_id_rsa.pub"文件内容，添加至GitHub
// GitLab
复制"gitlab_id_rsa.pub"文件内容，添加至GitLab
// Gitee
复制"gitee_id_rsa.pub"文件内容，添加至Gitee

四)验证SSH

// GitHub
ssh -T git@github.com
// GitLab 
ssh -T git@gitlab.your_gitlab_ip_address.com
// Gitee
ssh -T git@gitee.com

• 接着输入“yes”
• 若看到如下内容，则验证通过

// GitHub
"Hi xxxx! You've successfully authenticated, but GitHub does not provide shell access."
// GitLab
"Welcome to GitLab, （xxxx）!"
// Gitee
"Hi xxxx! You've successfully authenticated, but Gitee does not provide shell access."

• 若看到如下内容，则验证未通过

// GitHub
"git@github.com: Permission denied (publickey)."
// GitLab
"git@gitlab.com: Permission denied (publickey,keyboard-interactive)."
// Gitee
"git@gitee.com: Permission denied (publickey)."

• 未通过，解决方案，输入如下指令

// 由于上述通过"ssh-keygen -t rsa -C"生成的key是指定路径的，故此处需要手动执行如下指令：
ssh-agent -s
// GitHub
ssh-add ~/.ssh/github_id_rsa
// GitLab
ssh-add ~/.ssh/gitlab_id_rsa
// Gitee
ssh-add ~/.ssh/gitee_id_rsa