對等方使用 sshfs 重置連接

我正在使用一個 fuse/sshfs 安裝，到目前為止效果很好。現在我不得不重新安裝伺服器系統並突然得到經典read: Connection reset by peer錯誤。我正在使用公鑰身份驗證並將我的密鑰複製到新安裝的系統中。正常的 ssh 登錄工作正常。我將日誌更改為調試，但遺憾的是這並沒有給我任何有用的資訊：

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

有誰知道我在這裡缺少什麼？

更新

auth.log帶有調試級別 3的：

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

更新

我嘗試了手動sshfs安裝，我也得到了read: Connection reset by peer. 然後我添加了調試選項，也得到了Permission denied (publickey).. 這很奇怪，因為公鑰已經到位並且可以正常工作。我還使用我的使用者進行 ssh 連接並手動指定私鑰文件。這可能是 root 帳戶無法在某處訪問伺服器上正確的公鑰的問題嗎？我正在執行

sudo sshfs myuser@myserver:/mnt/foo /mnt/foo -o IdentityFile=/home/myuser/.ssh/id_rsa

相關的日誌部分是

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

由於此錯誤消息是 ssh 連接失敗時的預設錯誤消息，因此最通用的答案（根據 @peterph 評論）是至少使用以下方法進行調查-odebug：

sshfs -odebug,sshfs_debug,loglevel=debug ...

例如

sshfs -odebug,sshfs_debug,loglevel=debug -o Ciphers=arcfour -o Compression=no -o allow_root -o transform_symlinks localhost:/ /mnt/your_mount_point

如其他地方所述，常見原因包括缺少或缺少組成員身份（儘管allow_other在Ubuntu 18.04 上可能不再需要？）fuse.conf``fuse

在我的情況下，這列印：

SSHFS version 2.8 FUSE library version: 2.9.7 nullpath_ok: 0 nopath: 0 utime_omit_ok: 0 executing <ssh> <-x> <-a> <-oClearAllForwardings=yes> <-ologlevel=debug> <-oIdentityFile=~/.ssh/id_rsa> <-oCiphers=arcfour> <-oCompression=no> <-2> <localhost> <-s> <sftp> command-line line 0: Bad SSH2 cipher spec 'arcfour'. read: Connection reset by peer

…指向一個不受支持的密碼選項（在 fedora 但不是 ubuntu 上工作）

我正在使用該-F /path/to/config選項。答案在我的配置文件中

IdentityFile ~/.ssh/id_rsa

這沒有用。絕對路徑是必需的：

IdentityFile /home/user/.ssh/id_rsa

引用自：https://unix.stackexchange.com/questions/94720