我有两台机器，一台 MacOS 和一台 Ubuntu。我在 MacOS 上工作顺利，也就是说，我可以使用我的公钥通过 SSH 连接到服务器。但是，当尝试在新的 Ubuntu 机器上使用相同的私钥和公钥连接到服务器时，它失败了。
需要注意的一点是，MacOS 使用 SSH v1，而 Ubuntu 使用 SSH v2。
1. MacOS
/home/richardm/.ssh/id_rsa
/home/richardm/.ssh/id_rsa.pub
/home/richardm/.ssh/config
/home/richardm/.ssh/known_hosts
配置
Host *
AddKeysToAgent yes
UseKeychain yes
IdentityFile ~/.ssh/id_rsa
ServerAliveInterval 240
User = richard
ForwardAgent yes
StrictHostKeyChecking=no
IdentitiesOnly yes
终端输出：
$ ssh -A -J[电子邮件保护]dev-myco-node01-vvv
debug3: preferred publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering public key: /Users/richardm/.ssh/id_rsa RSA SHA256:CKEVmfXXXXXXXXXXXXXXXXXXXXXXXXXXXFrkI explicit agent
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 60
debug1: Server accepts key: /Users/richardm/.ssh/id_rsa RSA SHA256:CKEVmfXXXXXXXXXXXXXXXXXXXXXXXXXXXFrkI explicit agent
debug3: sign_and_send_pubkey: RSA SHA256:CKEVmfXXXXXXXXXXXXXXXXXXXXXXXXXXXFrkI
debug3: sign_and_send_pubkey: signing using rsa-sha2-512 SHA256:CKEVmfXXXXXXXXXXXXXXXXXXXXXXXXXXXFrkI
debug3: send packet: type 50
debug3: receive packet: type 52
debug1: Authentication succeeded (publickey).
2. Ubuntu
/home/richardm/.ssh/id_rsa
/home/richardm/.ssh/id_rsa.pub
/home/richardm/.ssh/config
/home/richardm/.ssh/known_hosts
配置
Host *
AddKeysToAgent yes
# UseKeychain yes
IdentityFile ~/.ssh/id_rsa
ServerAliveInterval 240
User = richard
ForwardAgent yes
StrictHostKeyChecking=no
IdentitiesOnly yes
终端输出：
$ ssh -A -J[电子邮件保护]richard@dev-myco-node01-vvv
debug3: preferred publickey
debug3: authmethod_lookup publickey
debug3: remaining preferred:
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering public key: /home/richardm/.ssh/id_rsa RSA SHA256:CKEVmfXXXXXXXXXXXXXXXXXXXXXXXXXXXFrkI explicit agent
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 60
debug1: Server accepts key: /home/richardm/.ssh/id_rsa RSA SHA256:CKEVmfXXXXXXXXXXXXXXXXXXXXXXXXXXXFrkI explicit agent
debug3: sign_and_send_pubkey: using publickey with RSA SHA256:CKEVmfXXXXXXXXXXXXXXXXXXXXXXXXXXXFrkI
debug3: sign_and_send_pubkey: signing using rsa-sha2-512 SHA256:CKEVmfXXXXXXXXXXXXXXXXXXXXXXXXXXXFrkI
sign_and_send_pubkey: signing failed for RSA "/home/richardm/.ssh/id_rsa" from agent: agent refused operation
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
[email protected]: Permission denied (publickey).
kex_exchange_identification: Connection closed by remote