我正在尝试使用 SSH 连接到远程 AWS（Ubuntu）服务器并不断收到此错误消息：
Permission denied (publickey).
在我的本地机器上，~/.ssh/config我有以下设置：
Host someserver
User potatouser
HostName serverone.mysite.com
Port 22
Host dashboard
User potatouser
HostName ec2-66-66-66-666.compute666.amazonaws.com
IdentityFile ~/.ssh/dashboard
Port 22
在终端中运行：ssh someserver工作正常，要求输入密码并连接我。
尝试使用私钥连接到第二台服务器。
-rwx------ 1 potatouser potatouser 955 2月13日 16:49 仪表板
-rwx------ 1 potatouser potatouser 398 2月 13日 17:13 dashaboo.pub
在我的 AWS 服务器上，在我的用户下，~/.ssh/有一个名为的文件：authorized_keys其中有一些看起来像公钥的东西，看起来像这样：
ssh-rsa asdasfagdsasfafsafadsfafs.....
....
...
- 我尝试在我的服务器上创建一个名为
dashboard.pub（具有相同内容）的新公共文件，以防它跟随文件名（？）。 - 我尝试将设置添加到我的配置文件中：
IdentitiesOnly yes因为我有多个密钥文件（id_rsa，git 存储库密钥）。 - 我尝试编辑文件
/etc/ssh/ssh_config并/etc/ssh/sshd_config设置PasswordAuthentication为yes（+sudo service ssh restart）。 - 我尝试将
HostName配置文件中的更改为 IP。
ssh -v 仪表板：
OpenSSH_7.5p1 Ubuntu-10ubuntu0.1, OpenSSL 1.0.2g 1 Mar 2016
debug1: Reading configuration data /home/potato/.ssh/config
debug1: /home/potato/.ssh/config line 25: Applying options for dashboard
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: resolving "66.666.666.666" port 22
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to 66.666.666.666 [66.666.666.666] port 22.
debug1: Connection established.
debug1: identity file /home/potato/.ssh/dashboard type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/potato/.ssh/dashboard-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.5p1 Ubuntu-10ubuntu0.1
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.6p1 Ubuntu-4ubuntu0.2
debug1: match: OpenSSH_7.6p1 Ubuntu-4ubuntu0.2 pat OpenSSH* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to 66.666.666.666:22 as 'potato'
debug3: hostkeys_foreach: reading file "/home/potato/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /home/potato/.ssh/known_hosts:25
debug3: load_hostkeys: loaded 1 keys from 66.666.666.666
debug3: order_hostkeyalgs: prefer hostkeyalgs: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
debug3: send packet: type 20
debug1: SSH2_MSG_KEXINIT sent
debug3: receive packet: type 20
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,ext-info-c
debug2: host key algorithms: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],[email protected],ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa
debug2: ciphers ctos: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc
debug2: MACs ctos: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,[email protected],zlib
debug2: compression stoc: none,[email protected],zlib
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug2: peer server KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1
debug2: host key algorithms: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
debug2: ciphers ctos: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: MACs ctos: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,[email protected]
debug2: compression stoc: none,[email protected]
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: [email protected] MAC: <implicit> compression: none
debug1: kex: client->server cipher: [email protected] MAC: <implicit> compression: none
debug3: send packet: type 30
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug3: receive packet: type 31
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:asdsadasd
debug3: hostkeys_foreach: reading file "/home/potato/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /home/potato/.ssh/known_hosts:25
debug3: load_hostkeys: loaded 1 keys from 66.666.666.666
debug1: Host '66.666.666.666' is known and matches the ECDSA host key.
debug1: Found key in /home/potato/.ssh/known_hosts:25
debug3: send packet: type 21
debug2: set_newkeys: mode 1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug3: receive packet: type 21
debug1: SSH2_MSG_NEWKEYS received
debug2: set_newkeys: mode 0
debug1: rekey after 134217728 blocks
debug2: key: /home/potato/.ssh/dashboard (0x560d7aa11fd0), explicit
debug3: send packet: type 5
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521>
debug3: receive packet: type 6
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug3: send packet: type 50
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey
debug3: start over, passed a different list publickey
debug3: preferred gssapi-keyex,gssapi-with-mic,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 RSA public key: /home/potato/.ssh/dashboard
debug3: send_pubkey_test
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
Permission denied (publickey).
我注意到了这一点：
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/potatouser/.ssh/dashboard
这可能是因为它正在寻找文件dashboard而不是dashboard.pub？
答案1
您尝试使用的公钥必须位于目标系统的 authorized_keys 文件中，否则它将不会被授权。
将您的公钥 (.pub) 内容复制到其中的新行上，您应该有一个正确的身份验证方法。如果这是您使用的唯一公钥，您可以删除 authorized_keys 文件并将新密钥文件重命名（移动）为“authorized_keys”。
仅将您的公钥文件“按原样”复制到目标系统的 .ssh 目录是不够的。