Read from socket failed: Connection reset by peer.，failedpeer

Read from socket failed: Connection reset by peer.，failedpeer

复制密钥另一台主机时，出现了错误：

Read from socket failed: Connection reset by peer.

到被登录主机的/var/log/auth.log查看日志：

Mar  7 12:51:59 slave01 sshd[2919]: error: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Mar  7 12:51:59 slave01 sshd[2919]: error: @         WARNING: UNPROTECTED PRIVATE KEY FILE!          @
Mar  7 12:51:59 slave01 sshd[2919]: error: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Mar  7 12:51:59 slave01 sshd[2919]: error: Permissions 0711 for '/etc/ssh/ssh_host_rsa_key' are too open.
Mar  7 12:51:59 slave01 sshd[2919]: error: It is required that your private key files are NOT accessible by others.
Mar  7 12:51:59 slave01 sshd[2919]: error: This private key will be ignored.
Mar  7 12:51:59 slave01 sshd[2919]: error: key_load_private: bad permissions
Mar  7 12:51:59 slave01 sshd[2919]: error: Could not load host key: /etc/ssh/ssh_host_rsa_key

应该是/etc/ssh文件夹的权限问题，执行下面的操作更改权限：

# cd /etc/ssh
# chmod 0644 *
# chmod 0600 ssh_host_dsa_key ssh_host_rsa_key

再重新启动sshd服务，复制成功，并且可以ssh登录。