我可以通过无密码SSH以root身份登录我的虚拟服务器以及用户名naveed。我必须在其上运行Hadoop，为此我在远程ssh目录中创建了私钥和公钥，并且还向authorized_keys文件添加了公钥。
但当我ssh comquest时，它会要求输入密码。 Comquest是我的远程服务器的主机名。
以下是我的权限信息：
naveed@comquest:~$ stat -c "%a %n" ~/.ssh
755 /home/naveed/.ssh
naveed@comquest:~$ stat -c "%a %n" ~/.ssh/authorized_keys
644 /home/naveed/.ssh/authorized_keys
以下是naveed@comquest:$ ssh -vvv comquest
naveed@comquest:/usr/local/hadoop$ ssh -vvv comquest
OpenSSH_7.2p2 Ubuntu-4ubuntu2.2, OpenSSL 1.0.2g 1 Mar 2016
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: resolving "comquest" port 22
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to comquest [173.82.212.48] port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file /home/naveed/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/naveed/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/naveed/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/naveed/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/naveed/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/naveed/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/naveed/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/naveed/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.2
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2p2 Ubuntu-4ubuntu2.2
debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.2 pat OpenSSH* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to comquest:22 as 'naveed'
debug3: hostkeys_foreach: reading file "/home/naveed/.ssh/known_hosts"
debug3: record_hostkey: found key type RSA in file /home/naveed/.ssh/known_hosts:2
debug3: load_hostkeys: loaded 1 keys from comquest
debug3: order_hostkeyalgs: prefer hostkeyalgs: ssh-rsa-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256,ssh-rsa
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@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,ext-info-c
debug2: host key algorithms: ssh-rsa-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-256,ssh-rsa,ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519
debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc
debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc
debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,zlib@openssh.com,zlib
debug2: compression stoc: none,zlib@openssh.com,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@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1
debug2: host key algorithms: ssh-rsa,rsa-sha2-512,rsa-sha2-256
debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,zlib@openssh.com
debug2: compression stoc: none,zlib@openssh.com
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug1: kex: algorithm: curve25519-sha256@libssh.org
debug1: kex: host key algorithm: rsa-sha2-512
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com 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: ssh-rsa SHA256:jad0RkXVMVxVyKD+9eY7abnSnUEz31nn+IMCfVUk7CA
debug3: hostkeys_foreach: reading file "/home/naveed/.ssh/known_hosts"
debug3: record_hostkey: found key type RSA in file /home/naveed/.ssh/known_hosts:2
debug3: load_hostkeys: loaded 1 keys from comquest
debug3: hostkeys_foreach: reading file "/home/naveed/.ssh/known_hosts"
debug3: record_hostkey: found key type RSA in file /home/naveed/.ssh/known_hosts:3
debug3: load_hostkeys: loaded 1 keys from 173.82.212.48
debug1: Host 'comquest' is known and matches the RSA host key.
debug1: Found key in /home/naveed/.ssh/known_hosts:2
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
debug2: set_newkeys: mode 0
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS received
debug2: key: /home/naveed/.ssh/id_rsa ((nil))
debug2: key: /home/naveed/.ssh/id_dsa ((nil))
debug2: key: /home/naveed/.ssh/id_ecdsa ((nil))
debug2: key: /home/naveed/.ssh/id_ed25519 ((nil))
debug3: send packet: type 5
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
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 53
debug3: input_userauth_banner
CloudCone LLC
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KVM Cloud Server Ubuntu 16.04.3 LTS
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system without authority or in excess of their authority are subject to
having all their activities on this system monitored and recorded or
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debug3: receive packet: type 51
debug1: Authentications that can continue: publickey,password
debug3: start over, passed a different list publickey,password
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: Trying private key: /home/naveed/.ssh/id_rsa
debug3: no such identity: /home/naveed/.ssh/id_rsa: No such file or directory
debug1: Trying private key: /home/naveed/.ssh/id_dsa
debug3: no such identity: /home/naveed/.ssh/id_dsa: No such file or directory
debug1: Trying private key: /home/naveed/.ssh/id_ecdsa
debug3: no such identity: /home/naveed/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: /home/naveed/.ssh/id_ed25519
debug3: no such identity: /home/naveed/.ssh/id_ed25519: No such file or directory
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
naveed@comquest's password:
以下是我的远程〜/ .ssh文件夹的内容：
naveed@comquest:~$ ls ~/.ssh
authorized_keys known_hosts local local.pub
local和local.pub是naveed@comquest访问comquest生成的密钥。 local.pub被添加到authorized_keys。
答案 0 :(得分：0)
您的私钥位于名为local的文件中，但这不是ssh查找的名称（默认情况下）。您的ssh -vvv输出显示其仅查找默认密钥文件名，例如id_rsa和id_dsa。
重命名local和local.pub文件以匹配预期的命名约定（例如id_rsa或其他任何内容，具体取决于它的类型），或添加{{1}到你的-o IdentityFile=~/.ssh/local命令行。