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Digital Ocean：s​​h_exchange_identification：讀取：連線被對等方重置

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Digital Ocean：s​​h_exchange_identification：讀取：連線被對等方重置

我在數位海洋上有一個水滴。它的憑證與我的一位朋友分享。我們過去透過 ssh 連接到它： ssh root@IP_Address
現在，由於注意力不集中，我們在伺服器上運行以下命令時犯了一個錯誤：
sudo chmod -R 777 /
由於該伺服器不再透過任何東西連接（SSH/FTP/...）並且給出以下錯誤：
ssh_exchange_identification: read: Connection reset by peer

這是的輸出ssh root@IP_Address -vv

OpenSSH_7.2p2 Ubuntu-4ubuntu2.2, OpenSSL 1.0.2g 1 Mar 2016 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug2: resolving "IP_Address" port 22 debug2: ssh_connect_direct: needpriv 0 debug1: Connecting to IP_Address [IP_Address] port 22. debug1: Connection established. debug1: key_load_public: No such file or directory debug1: identity file /home/talha/.ssh/id_rsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/talha/.ssh/id_rsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/talha/.ssh/id_dsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/talha/.ssh/id_dsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/talha/.ssh/id_ecdsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/talha/.ssh/id_ecdsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/talha/.ssh/id_ed25519 type -1 debug1: key_load_public: No such file or directory debug1: identity file /home/talha/.ssh/id_ed25519-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.2 ssh_exchange_identification: read: Connection reset by peer

請盡快幫助我，因為我沒有託管專案和資料庫的最新備份。

先感謝您！

答案1

作為嚴格的最低要求，請透過 DO 控制台登入 root（請參閱這裡以獲得說明）並執行

chmod 700 /root/.ssh
chmod 600 /root/.ssh/authorized_keys

（換句話說，將/root/.sshtorwx------和 of/root/.ssh/authorized_keys的存取權​​限rw-------設為 。如果其他使用者可以存取該文件，SSH 將不會信任該文件。

您可能還需要為 /etc/ssh 中的檔案設定正確的存取權限：

-rw-r--r--   1 root root 300261 Aug 11  2016 moduli
-rw-r--r--   1 root root   1830 Sep 19  2016 ssh_config
-rw-------   1 root root    672 Oct  2  2016 ssh_host_dsa_key
-rw-r--r--   1 root root    605 Oct  2  2016 ssh_host_dsa_key.pub
-rw-------   1 root root    227 Oct  2  2016 ssh_host_ecdsa_key
-rw-r--r--   1 root root    177 Oct  2  2016 ssh_host_ecdsa_key.pub
-rw-------   1 root root    411 Oct  2  2016 ssh_host_ed25519_key
-rw-r--r--   1 root root     97 Oct  2  2016 ssh_host_ed25519_key.pub
-rw-------   1 root root   1675 Oct  2  2016 ssh_host_rsa_key
-rw-r--r--   1 root root    397 Oct  2  2016 ssh_host_rsa_key.pub
-rw-r--r--   1 root root    338 Sep 19  2016 ssh_import_id
-rw-r--r--   1 root root   2598 Sep 19  2016 sshd_config

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