ssh - 无法执行无密码认证 ssh

Question

创建一对 key 并通过 ssh-copy-id 将公钥发送到服务器后，我仍然无法在没有密码的情况下登录

ssh -v user@host 的输出

debug1:在/home/pumba/.ssh/known_hosts:1

中找到 key

debug1:在 134217728 个 block 后重新生成 key

debug1: SSH2_MSG_NEWKEYS 已发送

debug1:期待 SSH2_MSG_NEWKEYS

debug1:在 134217728 个 block 后重新生成 key

debug1:收到 SSH2_MSG_NEWKEYS

debug1:收到 SSH2_MSG_EXT_INFO

debug1: kex_input_ext_info: server-sig-algs=

debug1:收到 SSH2_MSG_SERVICE_ACCEPT

debug1:可以继续的身份验证:publickey,password

debug1:下一个认证方式:公钥

debug1:提供 RSA 公钥:/home/pumba/.ssh/id_rsa

debug1:可以继续的身份验证:publickey,password

debug1:尝试私钥:/home/user/.ssh/id_dsa

debug1:尝试私钥:/home/pumba/.ssh/id_ecdsa

debug1:尝试私钥:/home/pumba/.ssh/id_ed25519

debug1:下一个认证方式:密码

Answer 1

调试 SSH 无密码身份验证:
详细 Debug模式运行-vvv

ssh -vvv user@host

使用特定 key 运行

ssh -i private_key user@host

检查文件权限

~./ssh permissions should be 700

~./ssh should be owned by your account

~/.ssh/authorized_keys permissions should be 600

~/.ssh/authorized_keys should be owned by your account

客户端权限:

/.ssh/config permissions should be 600

~/.ssh/id_* permissions should be 600

检查您的私钥是否与公钥匹配

Local: ssh-keygen -y -f ~/.ssh/id_rsa

Server: cat ~/.ssh/authorized_keys