1.配置多個ssh key

以兩個賬號為例：

[email protected]對應gitee的遠端倉庫

[email protected]對應github的遠端倉庫

1.1.在~/.ssh目錄下分別生成兩個賬號的ssh key

使用ssh-keygen -t rsa -C "[email protected]"不要一直回車，

在第一個提示出輸入key檔案的名字，剩下兩個提示直接回車，最後提示公匙和私匙儲存在你命名的key檔案中

[email protected]:~/.ssh$ ssh-keygen -t rsa -C "[email protected]"
Generating public/private rsa key pair.
Enter file in which to save the key (/home/ming/.ssh/id_rsa): id_rsa_gitee_user1            
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in id_rsa_gitee_user1.
Your public key has been saved in id_rsa_gitee_user1.pub.
The key fingerprint is:
SHA256:aaaaaaaaaaaaaaaaaaaaaaaaa 
 
[email protected]
The key's randomart image is:
+---[RSA 2048]----+
...
+----[SHA256]-----+
[email protected]:~/.ssh$ ls
id_rsa_gitee_user1  id_rsa_gitee_user1.pub  known_hosts 

使用同樣的步驟在.ssh資料夾中生成[email protected].com的key

[email protected]:~/.ssh$ ls
id_rsa_gitee_user1  id_rsa_gitee_user1.pub  id_rsa_github_user2  id_rsa_github_user2.pub  known_hosts
 

1.2.將密匙新增到ssh agent中

預設只讀取id_rsa，為了讓ssh識別新的私鑰，需將其新增到ssh agent中：

[email protected]:~/.ssh$ ssh-add id_rsa_gitee_user1
Identity added: id_rsa_gitee_user1 (id_rsa_gitee_user1)
[email protected]:~/.ssh$ ssh-add id_rsa_github_user2
Identity added: id_rsa_github_user2 (id_rsa_github_user2)

1.3.建立配置檔案

在.ssh檔案中建立檔名為config，無後綴

在config中分別配置兩個ssh key的資訊

#github配置
Host github-user2
    HostName github.com
    PreferredAuthentications publickey
    IdentityFile ~/.ssh/id_rsa_github_user2
    User ming
#gitee配置
Host gitee-user1
    HostName gitee.com
    PreferredAuthentications publickey
    IdentityFile ~/.ssh/id_rsa_gitee_user1
    User ming

1.4.測試

如下則表示配置成功

[email protected]:~/.ssh$ ssh -T [email protected]
Welcome to Gitee.com, user1!
[email protected]:~/.ssh$ ssh -T [email protected]
Warning: Permanently added the RSA host key for IP address '52.74.223.119' to the list of known hosts.
Hi RidingACodeToStray! You've successfully authenticated, but GitHub does not provide shell access.

注：取消全域性使用者和郵箱配置

git config --global --unset user.name
git config --global --unset user.email

在不同倉庫配置使用者和郵箱

git config user.name "yourname" 
git config user.email "youremail"

2.關於配置ssh key拉取或更新程式碼仍要輸入郵箱密碼的問題

可能由於之前拉取程式碼使用的url是https方式，該方式會要求使用者認證，ssh地址的時候才會採用ssh認證

進入倉庫的.git資料夾，開啟裡面的config檔案編輯，將

[remote "origin"]
	url = https://gitee.com/xx/xxxx.git
	fetch = +refs/heads/*:refs/remotes/origin/*

改為

[remote "origin"]
	url = [email protected]:xx/xxxx.git
	fetch = +refs/heads/*:refs/remotes/origin/*