sshはキーを受け入れませんが、id_rsaという名前の場合のみです
Sshdでキーを受け入れるという奇妙な問題が発生しましたが、名前が「id_rsa」でない場合のみです。
[root@login01 .ssh]# cp id_rsa idrsa
[root@login01 .ssh]# md5sum id_rsa idrsa
e45bc86220892d9212819704cdf116fb id_rsa
e45bc86220892d9212819704cdf116fb idrsa
[root@login01 .ssh]# ssh -i id_rsa mgmt01
Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
[root@login01 .ssh]# ssh -i idrsa mgmt01
Last login: Wed Apr 10 16:46:49 2019 from login01-ib
[root@mgmt01 ~]#
誰かが以前にこの問題に遭遇しましたか？すべての権限を確認しましたが、問題はありません。これに頭をかいて。
冗長性の場合：
私たちが得る悪い鍵
[root@login01 .ssh]# ssh -i id_rsa mgmt01 -vvv
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 "mgmt01" port 22
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to mgmt01 [10.1.1.252] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file id_rsa-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_7.4
debug1: match: OpenSSH_7.4 pat OpenSSH* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to mgmt01:22 as 'root'
debug3: hostkeys_foreach: reading file "/root/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /root/.ssh/known_hosts:5
debug3: load_hostkeys: loaded 1 keys from mgmt01
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: 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
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],aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-cbc,3des-cbc
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-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]
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
debug1: kex: curve25519-sha256 need=64 dh_need=64
debug1: kex: curve25519-sha256 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:iN76ArdjVn/wZlIOL66artv0q+xOcTInSyG+29JKd7w
debug3: hostkeys_foreach: reading file "/root/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /root/.ssh/known_hosts:5
debug3: load_hostkeys: loaded 1 keys from mgmt01
debug3: hostkeys_foreach: reading file "/root/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /root/.ssh/known_hosts:4
debug3: load_hostkeys: loaded 1 keys from 10.1.1.252
debug1: Host 'mgmt01' is known and matches the ECDSA Host key.
debug1: Found key in /root/.ssh/known_hosts:5
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: id_rsa (0x560301c1b190), 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=<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,gssapi-keyex,gssapi-with-mic
debug3: start over, passed a different list publickey,gssapi-keyex,gssapi-with-mic
debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_lookup gssapi-keyex
debug3: remaining preferred: gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_is_enabled gssapi-keyex
debug1: Next authentication method: gssapi-keyex
debug1: No valid Key exchange context
debug2: we did not send a packet, disable method
debug3: authmethod_lookup gssapi-with-mic
debug3: remaining preferred: publickey,keyboard-interactive,password
debug3: authmethod_is_enabled gssapi-with-mic
debug1: Next authentication method: gssapi-with-mic
debug1: Unspecified GSS failure. Minor code may provide more information
No Kerberos credentials available (default cache: KEYRING:persistent:0)
debug1: Unspecified GSS failure. Minor code may provide more information
No Kerberos credentials available (default cache: KEYRING:persistent:0)
debug2: we did not send a packet, disable method
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: 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,gssapi-keyex,gssapi-with-mic
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
私たちが得る良い鍵：
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key: idrsa
debug3: sign_and_send_pubkey: RSA SHA256:dnizM1DopxxMTYUZzfQFx+ZKSuESOuT1ob1xaJicQI0
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 52
debug1: Authentication succeeded (publickey).
Authenticated to mgmt01 ([10.1.1.252]:22).
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug3: send packet: type 90
debug1: Requesting [email protected]
debug3: send packet: type 80
debug1: Entering interactive session.
debug1: pledge: network
debug3: receive packet: type 80
debug1: client_input_global_request: rtype [email protected] want_reply 0
debug3: receive packet: type 91
debug2: callback start
debug2: fd 3 setting TCP_NODELAY
debug3: ssh_packet_set_tos: set IP_TOS 0x10
debug2: client_session2_setup: id 0
debug2: channel 0: request pty-req confirm 1
debug3: send packet: type 98
debug1: Sending environment.
debug3: Ignored env XDG_SESSION_ID
debug3: Ignored env HOSTNAME
debug3: Ignored env TERM
debug3: Ignored env Shell
debug3: Ignored env HISTSIZE
debug3: Ignored env SSH_CLIENT
debug3: Ignored env Perl5LIB
debug3: Ignored env QTDIR
debug3: Ignored env QTINC
debug3: Ignored env Perl_MB_OPT
debug3: Ignored env SSH_TTY
debug3: Ignored env QT_GRAPHICSSYSTEM_CHECKED
debug3: Ignored env USER
debug3: Ignored env LS_COLORS
debug3: Ignored env MAIL
debug3: Ignored env PATH
debug3: Ignored env PWD
debug1: Sending env LANG = en_US.UTF-8
debug2: channel 0: request env confirm 0
debug3: send packet: type 98
debug3: Ignored env MODULEPATH
debug3: Ignored env LOADEDMODULES
debug3: Ignored env KDEDIRS
debug3: Ignored env HISTCONTROL
debug3: Ignored env SHLVL
debug3: Ignored env HOME
debug3: Ignored env Perl_LOCAL_LIB_ROOT
debug3: Ignored env LOGNAME
debug3: Ignored env QTLIB
debug3: Ignored env CVS_RSH
debug3: Ignored env XDG_DATA_DIRS
debug3: Ignored env SSH_CONNECTION
debug3: Ignored env MODULESHOME
debug3: Ignored env LESSOPEN
debug3: Ignored env XDG_RUNTIME_DIR
debug3: Ignored env QT_PLUGIN_PATH
debug3: Ignored env Perl_MM_OPT
debug3: Ignored env BASH_FUNC_module()
debug3: Ignored env _
debug3: Ignored env OLDPWD
debug2: channel 0: request Shell confirm 1
debug3: send packet: type 98
debug2: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
debug3: receive packet: type 99
debug2: channel_input_status_confirm: type 99 id 0
debug2: PTY allocation request accepted on channel 0
debug2: channel 0: rcvd adjust 2097152
debug3: receive packet: type 99
debug2: channel_input_status_confirm: type 99 id 0
debug2: Shell request accepted on channel 0
証明書の場合、configおよび/ etc/ssh内に次のものが表示されません。
HostKey /etc/ssh/ssh_Host_rsa_key
HostKey /etc/ssh/ssh_Host_ecdsa_key
HostKey /etc/ssh/ssh_Host_ed25519_key
AuthorizedKeysFile .ssh/authorized_keys
[root@mgmt01 ssh]# ll
total 608
-rw-r--r--. 1 root root 581843 Apr 10 2018 moduli
-rw-r--r--. 1 root root 2304 Apr 10 16:19 ssh_config
-rw-------. 1 root root 4431 Apr 10 16:24 sshd_config
-rw-r----- 1 root ssh_keys 227 Mar 29 12:41 ssh_Host_ecdsa_key
-rw-r--r-- 1 root root 162 Mar 29 12:41 ssh_Host_ecdsa_key.pub
-rw-r----- 1 root ssh_keys 387 Mar 29 12:41 ssh_Host_ed25519_key
-rw-r--r-- 1 root root 82 Mar 29 12:41 ssh_Host_ed25519_key.pub
-rw-r----- 1 root ssh_keys 1675 Mar 29 12:41 ssh_Host_rsa_key
-rw-r--r-- 1 root root 382 Mar 29 12:41 ssh_Host_rsa_key.pub
後者があなたの質問に特に関連しているかどうかはわかりませんが。
メインキーファイルと一致しないid_rsa.pubファイルがある可能性があります（つまり、別の時間に生成されました）。
OpenSSH秘密鍵ファイルの形式は「オールオアナッシング」です。暗号化されている場合は、公開パラメーターも暗号化されるため、クライアントがサーバーに鍵を提供する前にパスフレーズプロンプトが必要になります。
OpenSSHは、キーペアが受け入れ可能かどうかを確認したいのでbeforeパスフレーズプロンプトで時間を無駄にしているため、公開キーのロック解除されたコピーを*.pubファイルに保持し、初期認証ステップ。サーバーが最初にid_rsa.pubから公開鍵を受け入れない限り、id_rsaで秘密鍵を探すことすらありません。
ssh-keygen -y -f id_rsa > id_rsa.pubを使用して、このファイルを再作成します。