我为“ansible”用户生成了一个 ssh 密钥，它适用于所有客户端，但其中一个客户端安装了 SuSE（SLES）11.4 操作系统。
主机端~/.ssh目录内容：
-rw-------. 1 ansible ansible 1675 May 14 2018 id_rsa
-rw-r--r--. 1 ansible ansible 401 May 14 2018 id_rsa.pub
主机端主目录（~/.ssh）：
drwxr-----. 2 ansible ansible 4096 Oct 14 15:25 .ssh
获取强制：
Disabled
客户端 sshd_config：
RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile %h/.ssh/authorized_keys
客户端~/.ssh目录内容：
-rw------- 1 ansible users 802 Oct 14 15:25 authorized_keys
-rw-r--r-- 1 ansible users 173 Oct 14 15:40 known_hosts
客户端 ~/.ssh 目录：
drwx------ 2 ansible users 4096 Oct 14 15:40 .ssh
调试：
OpenSSH_7.4p1, OpenSSL 1.0.2k-fips 26 Jan 2017
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 58: Applying options for *
debug2: resolving "ClientSide" port 22
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to ClientSide [clientIP] port 22.
debug1: Connection established.
debug1: identity file /home/ansible/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/ansible/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/ansible/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/ansible/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/ansible/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/ansible/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/ansible/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/ansible/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.4
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1
debug1: match: OpenSSH_6.6.1 pat OpenSSH_6.6.1* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to ClientSide:22 as 'ansible'
debug3: hostkeys_foreach: reading file "/home/ansible/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /home/ansible/.ssh/known_hosts:203
debug3: load_hostkeys: loaded 1 keys from ClientSide
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,diffie-hellman-group1-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],[email protected],ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa,ssh-dss
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: [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,diffie-hellman-group1-sha1
debug2: host key algorithms: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ssh-ed25519
debug2: ciphers ctos: aes128-ctr,aes192-ctr,aes256-ctr,[email protected],aes128-cbc,3des-cbc,aes192-cbc,aes256-cbc,[email protected]
debug2: ciphers stoc: aes128-ctr,aes192-ctr,aes256-ctr,[email protected],aes128-cbc,3des-cbc,aes192-cbc,aes256-cbc,[email protected]
debug2: MACs ctos: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-sha1,[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-sha1,[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96
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
debug1: kex: [email protected] need=64 dh_need=64
debug1: kex: [email protected] need=64 dh_need=64
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:zQKgaQwXjAFWT0EHm57K9xl9cJ87fh671pmqExf7h6w
debug3: hostkeys_foreach: reading file "/home/ansible/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /home/ansible/.ssh/known_hosts:203
debug3: load_hostkeys: loaded 1 keys from ClientSide
debug3: hostkeys_foreach: reading file "/home/ansible/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /home/ansible/.ssh/known_hosts:150
debug3: load_hostkeys: loaded 1 keys from clientIP
debug1: Host 'ClientSide' is known and matches the ECDSA host key.
debug1: Found key in /home/ansible/.ssh/known_hosts:203
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/ansible/.ssh/id_rsa (0x56394e960730)
debug2: key: /home/ansible/.ssh/id_dsa ((nil))
debug2: key: /home/ansible/.ssh/id_ecdsa ((nil))
debug2: key: /home/ansible/.ssh/id_ed25519 ((nil))
debug3: send packet: type 5
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,keyboard-interactive
debug3: start over, passed a different list publickey,password,keyboard-interactive
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/ansible/.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,keyboard-interactive
debug1: Trying private key: /home/ansible/.ssh/id_dsa
debug3: no such identity: /home/ansible/.ssh/id_dsa: No such file or directory
debug1: Trying private key: /home/ansible/.ssh/id_ecdsa
debug3: no such identity: /home/ansible/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: /home/ansible/.ssh/id_ed25519
debug3: no such identity: /home/ansible/.ssh/id_ed25519: No such file or directory
debug2: we did not send a packet, disable method
debug3: authmethod_lookup keyboard-interactive
debug3: remaining preferred: password
debug3: authmethod_is_enabled keyboard-interactive
debug1: Next authentication method: keyboard-interactive
debug2: userauth_kbdint
debug3: send packet: type 50
debug2: we sent a keyboard-interactive packet, wait for reply
debug3: receive packet: type 60
debug2: input_userauth_info_req
debug2: input_userauth_info_req: num_prompts 1
答案1
我找到了问题。它与客户端主目录权限有关。我的 ansible 主目录 (/home/ansible) 权限为 777，我将其更改为 755，问题就解决了。