我尝试为正在处理的 MPI 集群设置无密码 ssh。我在主节点上生成 RSA 密钥并将公钥发送到我的客户端节点。它发送但拒绝通过公钥/私钥连接，当我尝试通过无密码 ssh 连接时，它又回到通过密码连接。这是调试和日志文件的输出，任何帮助都将不胜感激！
客户端 /var/log/auth.log
Oct 14 16:08:08 mpiuser1 sshd[7249]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=192.168.1.100 user=mpiuser
掌握 .ssh 权限
drwx------ 2 mpiuser mpiuser 4096 Oct 14 15:08 .ssh
inside ssh dir
drwx------ 2 mpiuser mpiuser 4096 Oct 14 15:08 .
drwx------ 19 mpiuser mpiuser 4096 Oct 14 16:04 ..
-rw------- 1 mpiuser mpiuser 1679 Oct 14 15:07 id_rsa
-rw-r--r-- 1 mpiuser mpiuser 399 Oct 14 15:07 id_rsa.pub
-rw-r--r-- 1 mpiuser mpiuser 444 Oct 14 15:05 known_hosts
客户端 ssh 权限
drwx------ 2 mpiuser mpiuser 4096 Oct 14 15:09 .ssh
inside ssh dir
drwx------ 2 mpiuser mpiuser 4096 Oct 14 16:27 .
drwx------ 5 mpiuser mpiuser 4096 Oct 9 15:14 ..
-rw------- 1 mpiuser mpiuser 615 Oct 14 15:09 authorized_keys
-rw------- 1 mpiuser mpiuser 1675 Oct 14 16:27 id_rsa
-rw-r--r-- 1 mpiuser mpiuser 398 Oct 14 16:27 id_rsa.pub
-rw-r--r-- 1 mpiuser mpiuser 444 Oct 14 15:06 known_hosts
从主机连接到客户端时读取 ssh 调试信息
mpiuser@mpiMaster:~$ ssh -vvv mpiuser@mpiuser1
OpenSSH_7.2p2 Ubuntu-4ubuntu2.8, 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 "mpiuser1" port 22
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to mpiuser1 [192.168.1.101] port 22.
debug1: Connection established.
debug1: identity file /home/mpiuser/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/mpiuser/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/mpiuser/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/mpiuser/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/mpiuser/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/mpiuser/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/mpiuser/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/mpiuser/.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-4ubuntu2.8
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2p2 Ubuntu-4ubuntu2.8
debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.8 pat OpenSSH* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to mpiuser1:22 as 'mpiuser'
debug3: hostkeys_foreach: reading file "/home/mpiuser/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /home/mpiuser/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys from mpiuser1
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: [email protected],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: [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,3des-cbc
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc,3des-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: [email protected],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,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: [email protected]
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:iNrg1vpxjB7F4kJhdcqTwx983ivFKhXTDjqyQocnuKk
debug3: hostkeys_foreach: reading file "/home/mpiuser/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /home/mpiuser/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys from mpiuser1
debug3: hostkeys_foreach: reading file "/home/mpiuser/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /home/mpiuser/.ssh/known_hosts:2
debug3: load_hostkeys: loaded 1 keys from 192.168.1.101
debug1: Host 'mpiuser1' is known and matches the ECDSA host key.
debug1: Found key in /home/mpiuser/.ssh/known_hosts:1
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
debug1: Skipping ssh-dss key /home/mpiuser/.ssh/id_dsa - not in PubkeyAcceptedKeyTypes
debug2: key: /home/mpiuser/.ssh/id_rsa (0x55f66d882150)
debug2: key: /home/mpiuser/.ssh/id_dsa ((nil))
debug2: key: /home/mpiuser/.ssh/id_ecdsa ((nil))
debug2: key: /home/mpiuser/.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 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: Offering RSA public key: /home/mpiuser/.ssh/id_rsa
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,password
debug1: Trying private key: /home/mpiuser/.ssh/id_dsa
debug3: no such identity: /home/mpiuser/.ssh/id_dsa: No such file or directory
debug1: Trying private key: /home/mpiuser/.ssh/id_ecdsa
debug3: no such identity: /home/mpiuser/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: /home/mpiuser/.ssh/id_ed25519
debug3: no such identity: /home/mpiuser/.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
mpiuser@mpiuser1's password:
答案1
更新-事实证明，ssh-copy-id 从天知道的地方获取了一些伪造的 dsa 密钥，但手动强制它复制我的 id_rsa.pub 密钥，现在通过密钥连接 ssh 就可以完美运行。