git@e.coding.net: Permission denied (publickey). fatal: Could not read from remote repository.

今天装一台新电脑，然后重新拉了一下Git仓库代码，发现报错，很奇怪，错误如下：

git@e.coding.net: Permission denied (publickey). fatal: Could not read from remote repository.

网上搜了一下，发现应该是配置出了问题。

我个人的处理步骤如下：

1、首先，先检查自己生成的SSH公钥是否正确；

验证 SHA256 算法指纹

查看本地 .ssh/know_hosts 文件中关于 e.coding.net 的 SHA256 算法的指纹，如果返回值为 jok3FH7q5LJ6qvE7iPNehBgXRw51ErE77S0Dn+Vg/Ik，则证明您连接到了正确的 CODING 服务器。

在终端中运行命令：

copyssh-keygen -lf ~/.ssh/known_hosts

验证 MD5 算法指纹

查看本地 .ssh/know_hosts 文件中关于 e.coding.net 的 MD5 算法的指纹，如果返回值是 98:ab:2b:30:60:00:82:86:bb:85:db:87:22:c4:4f:b1，则证明您连接到了正确的 CODING 服务器。

在终端中运行命令：

ssh-keygen -E md5 -lf ~/.ssh/known_hosts

以上两种方式都可以验证你的算法指纹鉴权是否正常，当然了，我发现我的都是正常的，于是继续往下检查；

2、查看ssh_config文件里是否有配置相关属性（如果是单个仓库其实不会存在这些问题，但是如果多个仓库比如github/coding/gitee等就最好配置一下）；

查看后发现代码如下：

#	$OpenBSD: ssh_config,v 1.35 2020/07/17 03:43:42 dtucker Exp $

# This is the ssh client system-wide configuration file.  See
# ssh_config(5) for more information.  This file provides defaults for
# users, and the values can be changed in per-user configuration files
# or on the command line.

# Configuration data is parsed as follows:
#  1. command line options
#  2. user-specific file
#  3. system-wide file
# Any configuration value is only changed the first time it is set.
# Thus, host-specific definitions should be at the beginning of the
# configuration file, and defaults at the end.

# Site-wide defaults for some commonly used options.  For a comprehensive
# list of available options, their meanings and defaults, please see the
# ssh_config(5) man page.

# Host *
#   ForwardAgent no
#   ForwardX11 no
#   PasswordAuthentication yes
#   HostbasedAuthentication no
#   GSSAPIAuthentication no
#   GSSAPIDelegateCredentials no
#   BatchMode no
#   CheckHostIP yes
#   AddressFamily any
#   ConnectTimeout 0
#   StrictHostKeyChecking ask
#   IdentityFile ~/.ssh/id_rsa
#   IdentityFile ~/.ssh/id_dsa
#   IdentityFile ~/.ssh/id_ecdsa
#   IdentityFile ~/.ssh/id_ed25519
#   Port 22
#   Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc
#   MACs hmac-md5,hmac-sha1,umac-64@openssh.com
#   EscapeChar ~
#   Tunnel no
#   TunnelDevice any:any
#   PermitLocalCommand no
#   VisualHostKey no
#   ProxyCommand ssh -q -W %h:%p gateway.example.com
#   RekeyLimit 1G 1h
#   UserKnownHostsFile ~/.ssh/known_hosts.d/%k
# Added by git-extra
Host ssh.dev.azure.com
	HostkeyAlgorithms +ssh-rsa
	PubkeyAcceptedAlgorithms +ssh-rsa
# Added by git-extra
Host *.visualstudio.com
	HostkeyAlgorithms +ssh-rsa
	PubkeyAcceptedAlgorithms +ssh-rsa

这是一个标准的配置文件，可以在git安装目录下的/etc/ssh目录下找到，我们添加如下代码：

Host *.coding.net
	HostkeyAlgorithms +ssh-rsa
	PubkeyAcceptedAlgorithms +ssh-rsa
	IdentityFile ~/.ssh/coding-rsa

上面代码中要注意IdentityFile 这个地址要连接到你安装的SSH公钥地址，一般默认是~/.ssh/id-rsa，因为我个人是使用多个，所以我改了名字的。

以上问题就完美解决，如果是Mac系统，需要搜索一下目录地址。