妙音 -

起因

最近升级了自己的linux后, 更新gogs代码时，发现用不了了

反复测试原因，发现是最新版本openssh8.6关闭了公钥登录

错误提示

尝试了各种办法，会发现始终提示ssh登录失败

username@ip: Permission denied (publickey).

查看ssh详细信息

输出ssh调试信息，查看失败的具体原因

ssh -Tv username@ip

#发现了一条提示，这就是登录失败的原因
...
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering public key: /home/xxx/.ssh/id_rsa RSA SHA256:0IxiHWniJDBbsM8x0zx+zliWrl7PINcALzFFqVgKX/M agent
debug1: send_pubkey_test: no mutual signature algorithm
...

解决办法

sudo vim /etc/ssh/ssh_config

#增加一条PubKeyAcceptedKeyTypes

 Host *
    PubKeyAcceptedKeyTypes +ssh-rsa
#   ForwardAgent no
#   ForwardX11 no
#   PasswordAuthentication yes
#   HostbasedAuthentication no
#   GSSAPIAuthentication no
#   GSSAPIDelegateCredentials no
#   GSSAPIKeyExchange no
#   GSSAPITrustDNS no
#   BatchMode no