どちらのサーバーも同じキーを使用します。ログに何も見つかりませんでした。
$ scp -vvv -i /home/user/myPrivateKey.key /dev [email protected]:~/home/user
Executing: program /usr/bin/ssh host 10.xxx.xxx.xxx, user user, command scp -v -t /home/user
OpenSSH_6.7p1 Debian-5+deb8u3, OpenSSL 1.0.1t 3 May 2016
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: /etc/ssh/ssh_config line 57: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to 10.xxx.xxx.xxx [10.xxx.xxx.xxx] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/myPrivateKey.key type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/myPrivateKey.key-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.7p1 Debian-5+deb8u3
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4p1 Debian-10+deb9u2
debug1: match: OpenSSH_7.4p1 Debian-10+deb9u2 pat OpenSSH* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug3: load_hostkeys: loading entries for host "10.xxx.xxx.xxx" from file "/root/.ssh/known_hosts"
debug3: load_hostkeys: found key type ECDSA in file /root/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys
debug3: order_hostkeyalgs: prefer hostkeyalgs: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa$
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: [email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,di$
debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-e$
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],[email protected],arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,a$
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],[email protected],arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,a$
debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-25$
debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-25$
debug2: kex_parse_kexinit: none,[email protected],zlib
debug2: kex_parse_kexinit: none,[email protected],zlib
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: kex_parse_kexinit: curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-gr$
debug2: kex_parse_kexinit: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
debug2: kex_parse_kexinit: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: kex_parse_kexinit: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-25$
debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-25$
debug2: kex_parse_kexinit: none,[email protected]
debug2: kex_parse_kexinit: none,[email protected]
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: mac_setup: setup [email protected]
debug1: kex: server->client aes128-ctr [email protected] none
debug2: mac_setup: setup [email protected]
debug1: kex: client->server aes128-ctr [email protected] none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ECDSA 20:53:50:b4:4f:9e:4e:86:82:7a:dc:44:82:d4:c1:8a
debug3: load_hostkeys: loading entries for host "10.xxx.xxx.xxx" from file "/root/.ssh/known_hosts"
debug3: load_hostkeys: found key type ECDSA in file /root/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys
debug1: Host '10.xxx.xxx.xxx' is known and matches the ECDSA host key.
debug1: Found key in /root/.ssh/known_hosts:1
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: /home/user/myPrivateKey.key ((nil)), explicit
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: Trying private key: /home/user/myPrivateKey.key
debug3: sign_and_send_pubkey: RSA 96:2e:35:c2:25:6a:a8:b8:21:48:43:24:a3:69:c0:df
debug2: we sent a publickey packet, wait for reply
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).
lost connection
ベストアンサー1
debug1: Trying private key: /home/user/myPrivateKey.key
debug3: sign_and_send_pubkey: RSA 96:2e:35:c2:25:6a:a8:b8:21:48:43:24:a3:69:c0:df
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey
SSHクライアントは秘密鍵を送信しましたが、古いスタイルの鍵ハッシュのため、SSHプロトコルバージョン1.xの鍵である可能性があります。リモートバージョンはDebianのOpenSSH 7.4p1です。このバージョンは廃止され、致命的なセキュリティ上の欠陥があることが判明したため、SSHプロトコルバージョン1.xのサポートを完全に削除します。
そうでない場合、これらのメッセージはサーバーがキーを受け入れないことを示します。サーバーの認証ログ（Debian）を確認する必要があります。/var/log/auth.logターゲットユーザーのホームディレクトリ、サブディレクトリ、またはファイルの権限に問題がある場合は、そのメッセージが表示されます。~/.ssh~/.ssh/authorized_keys
最も一般的な問題は、誤った所有権または書き込み権限が多すぎます。authorized_keysアカウントの所有者だけがファイルに書き込むことができるように、ファイルを保護する必要があります。それ以外の場合、sshdファイルは完全に無視されます。