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Digital Ocean：s​​sh_exchange_identification：读取：对等方重置连接

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Digital Ocean：s​​sh_exchange_identification：读取：对等方重置连接

我在 Digital Ocean 上有一个 droplet。它的凭据与我的一个朋友共享。我们过去通过 ssh 连接到它： ssh root@IP_Address
现在由于注意力不集中，我们在服务器上运行以下命令时犯了一个错误：
sudo chmod -R 777 /
由于该服务器不再通过任何方式（SSH/FTP/...）连接，并出现以下错误：
ssh_exchange_identification: read: Connection reset by peer

这是输出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

请尽快帮助我，因为我没有托管项目和数据库的最新备份。

先感谢您！

答案1

作为最低要求，请通过 DO 控制台登录 root 用户（请参阅这里了解说明）并执行

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

（换句话说，将 的访问权限设置为和/root/.ssh。rwx------如果其他用户可以访问该文件，SSH 将不会信任该文件。/root/.ssh/authorized_keysrw-------

您可能还必须设置对 /etc/ssh 中的文件的正确访问权限：

-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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