Używam fuse / sshfs mount, który do tej pory działał dobrze. Teraz musiałem ponownie zainstalować system serwera i nagle otrzymałem klasyczny read: Connection reset by peer
błąd. Korzystam z uwierzytelniania za pomocą klucza publicznego i skopiowałem swój klucz do nowo zainstalowanego systemu. Normalne logowanie ssh działa dobrze. Zmieniłem dziennik na debugowanie, ale niestety nie daje to żadnych użytecznych informacji:
sshd[2077]: debug1: Forked child 2198.
sshd[2198]: Set /proc/self/oom_score_adj to 0
sshd[2198]: debug1: rexec start in 5 out 5 newsock 5 pipe 7 sock 8
sshd[2198]: debug1: inetd sockets after dupping: 3, 3
sshd[2198]: Connection from 192.168.1.6 port 47991
sshd[2198]: debug1: Client protocol version 2.0; client software version OpenSSH_6.1p1 Debian-4
sshd[2198]: debug1: match: OpenSSH_6.1p1 Debian-4 pat OpenSSH*
sshd[2198]: debug1: Enabling compatibility mode for protocol 2.0
sshd[2198]: debug1: Local version string SSH-2.0-OpenSSH_6.1p1 Debian-4
sshd[2198]: debug1: permanently_set_uid: 103/65534 [preauth]
sshd[2198]: debug1: list_hostkey_types: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256 [preauth]
sshd[2198]: debug1: SSH2_MSG_KEXINIT sent [preauth]
sshd[2198]: debug1: SSH2_MSG_KEXINIT received [preauth]
sshd[2198]: debug1: kex: client->server aes128-ctr hmac-md5 none [preauth]
sshd[2198]: debug1: kex: server->client aes128-ctr hmac-md5 none [preauth]
sshd[2198]: debug1: expecting SSH2_MSG_KEX_ECDH_INIT [preauth]
sshd[2198]: debug1: SSH2_MSG_NEWKEYS sent [preauth]
sshd[2198]: debug1: expecting SSH2_MSG_NEWKEYS [preauth]
sshd[2198]: Connection closed by 192.168.1.6 [preauth]
sshd[2198]: debug1: do_cleanup [preauth]
sshd[2198]: debug1: monitor_read_log: child log fd closed
sshd[2198]: debug1: do_cleanup
sshd[2198]: debug1: Killing privsep child 2199
Czy ktoś ma pojęcie, czego mi brakuje?
AKTUALIZACJA
Z auth.log
poziomem debugowania 3:
sshd[2455]: debug3: fd 5 is not O_NONBLOCK
sshd[2455]: debug1: Forked child 2456.
sshd[2455]: debug3: send_rexec_state: entering fd = 8 config len 751
sshd[2455]: debug3: ssh_msg_send: type 0
sshd[2455]: debug3: send_rexec_state: done
sshd[2456]: debug3: oom_adjust_restore
sshd[2456]: Set /proc/self/oom_score_adj to 0
sshd[2456]: debug1: rexec start in 5 out 5 newsock 5 pipe 7 sock 8
sshd[2456]: debug1: inetd sockets after dupping: 3, 3
sshd[2456]: Connection from 192.168.1.6 port 50037
sshd[2456]: debug1: Client protocol version 2.0; client software version OpenSSH_6.1p1 Debian-4
sshd[2456]: debug1: match: OpenSSH_6.1p1 Debian-4 pat OpenSSH*
sshd[2456]: debug1: Enabling compatibility mode for protocol 2.0
sshd[2456]: debug1: Local version string SSH-2.0-OpenSSH_6.1p1 Debian-4
sshd[2456]: debug2: fd 3 setting O_NONBLOCK
sshd[2456]: debug2: Network child is on pid 2457
sshd[2456]: debug3: preauth child monitor started
sshd[2456]: debug3: privsep user:group 103:65534 [preauth]
sshd[2456]: debug1: permanently_set_uid: 103/65534 [preauth]
sshd[2456]: debug1: list_hostkey_types: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256 [preauth]
sshd[2456]: debug1: SSH2_MSG_KEXINIT sent [preauth]
sshd[2456]: debug1: SSH2_MSG_KEXINIT received [preauth]
sshd[2456]: debug2: kex_parse_kexinit: 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 [preauth]
sshd[2456]: debug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256 [preauth]
sshd[2456]: debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se [preauth]
sshd[2456]: debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se [preauth]
sshd[2456]: debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 [preauth]
sshd[2456]: debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 [preauth]
sshd[2456]: debug2: kex_parse_kexinit: none,zlib@openssh.com [preauth]
sshd[2456]: debug2: kex_parse_kexinit: none,zlib@openssh.com [preauth]
sshd[2456]: debug2: kex_parse_kexinit: [preauth]
sshd[2456]: debug2: kex_parse_kexinit: [preauth]
sshd[2456]: debug2: kex_parse_kexinit: first_kex_follows 0 [preauth]
sshd[2456]: debug2: kex_parse_kexinit: reserved 0 [preauth]
sshd[2456]: debug2: kex_parse_kexinit: 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 [preauth]
sshd[2456]: debug2: kex_parse_kexinit: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ssh-rsa-cert-v00@openssh.com,ssh-dss-cert-v00@openssh.com,ssh-rsa,ssh-dss [preauth]
sshd[2456]: debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se [preauth]
sshd[2456]: debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se [preauth]
sshd[2456]: debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 [preauth]
sshd[2456]: debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 [preauth]
sshd[2456]: debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib [preauth]
sshd[2456]: debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib [preauth]
sshd[2456]: debug2: kex_parse_kexinit: [preauth]
sshd[2456]: debug2: kex_parse_kexinit: [preauth]
sshd[2456]: debug2: kex_parse_kexinit: first_kex_follows 0 [preauth]
sshd[2456]: debug2: kex_parse_kexinit: reserved 0 [preauth]
sshd[2456]: debug2: mac_setup: found hmac-md5 [preauth]
sshd[2456]: debug1: kex: client->server aes128-ctr hmac-md5 none [preauth]
sshd[2456]: debug2: mac_setup: found hmac-md5 [preauth]
sshd[2456]: debug1: kex: server->client aes128-ctr hmac-md5 none [preauth]
sshd[2456]: debug1: expecting SSH2_MSG_KEX_ECDH_INIT [preauth]
sshd[2456]: debug3: mm_key_sign entering [preauth]
sshd[2456]: debug3: mm_request_send entering: type 5 [preauth]
sshd[2456]: debug3: mm_key_sign: waiting for MONITOR_ANS_SIGN [preauth]
sshd[2456]: debug3: mm_request_receive_expect entering: type 6 [preauth]
sshd[2456]: debug3: mm_request_receive entering [preauth]
sshd[2456]: debug3: mm_request_receive entering
sshd[2456]: debug3: monitor_read: checking request 5
sshd[2456]: debug3: mm_answer_sign
sshd[2456]: debug3: mm_answer_sign: signature 0x7f9b687c7680(100)
sshd[2456]: debug3: mm_request_send entering: type 6
sshd[2456]: debug2: monitor_read: 5 used once, disabling now
sshd[2456]: debug2: kex_derive_keys [preauth]
sshd[2456]: debug2: set_newkeys: mode 1 [preauth]
sshd[2456]: debug1: SSH2_MSG_NEWKEYS sent [preauth]
sshd[2456]: debug1: expecting SSH2_MSG_NEWKEYS [preauth]
sshd[2456]: Connection closed by 192.168.1.6 [preauth]
sshd[2456]: debug1: do_cleanup [preauth]
sshd[2456]: debug3: PAM: sshpam_thread_cleanup entering [preauth]
sshd[2456]: debug1: monitor_read_log: child log fd closed
sshd[2456]: debug3: mm_request_receive entering
sshd[2456]: debug1: do_cleanup
sshd[2456]: debug3: PAM: sshpam_thread_cleanup entering
sshd[2456]: debug1: Killing privsep child 2457
AKTUALIZACJA
Próbowałem sshfs
montażu ręcznego, a także dostaję read: Connection reset by peer
. Następnie dodałem opcje debugowania, a także dostałem Permission denied (publickey).
. Jest to dziwne, ponieważ klucz publiczny jest na swoim miejscu i działa inaczej. Używam również mojego użytkownika do połączenia ssh i ręcznie określam plik klucza prywatnego. Czy może to być problem z tym, że konto root nie może uzyskać dostępu do poprawnego klucza publicznego gdzieś na serwerze? Wykonuję
sudo sshfs myuser@myserver:/mnt/foo /mnt/foo -o IdentityFile=/home/myuser/.ssh/id_rsa
a odpowiednią częścią dziennika jest
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/myuser/.ssh/id_rsa
debug1: Authentications that can continue: publickey
debug1: No more authentication methods to try.
Permission denied (publickey).
read: Connection reset by peer
Connect to Server...
opcja), jak i Filezilla. To działa dobrze. Chociaż Filezilla zapytał mnie o nieznany klucz hosta.
sftp
bezpośrednio - tego używa SSHFS.
sshfs -odebug,sshfs_debug,loglevel=debug ...
może zrobić lewę (wzięte z sourceforge.net/apps/mediawiki/fuse/index.php?title=SshfsFaq ).
sftp
serwer działa poprawnie?