SSH 在“进入交互式会话”阶段挂起答案

【问题标题】：SSH Hangs on "Entering interactive session" stageSSH 在“进入交互式会话”阶段挂起
【发布时间】：2016-04-26 16:37:52
【问题描述】：

我使用 yocto 项目为 Banana Pro 板构建了一个图像。我正在尝试通过ssh root@10.1.80.x 连接端口，但我不能。

Ssh 总是挂在Entering interactive session 阶段。当我运行ssh -v 参数时，我捕获了以下日志：

OpenSSH_6.9p1 Ubuntu-2ubuntu0.1, OpenSSL 1.0.2d 9 Jul 2015 
debug1: Reading configuration data /etc/ssh/ssh_config 
debug1: /etc/ssh/ssh_config line 19: Applying options for * 
debug1: Connecting to 10.1.80.41 [10.1.80.41] port 22. 
debug1: Connection established.
debug1: key_load_public: No such file or directory 
debug1: identity file /home/yusuf/.ssh/id_rsa type -1 
debug1: key_load_public: No such file or directory 
debug1: identity file /home/yusuf/.ssh/id_rsa-cert type -1 
debug1: key_load_public: No such file or directory 
debug1: identity file /home/yusuf/.ssh/id_dsa type -1 
debug1: key_load_public: No such file or directory 
debug1: identity file /home/yusuf/.ssh/id_dsa-cert type -1 
debug1: key_load_public: No such file or directory 
debug1: identity file /home/yusuf/.ssh/id_ecdsa type -1 
debug1: key_load_public: No such file or directory 
debug1: identity file /home/yusuf/.ssh/id_ecdsa-cert type -1 
debug1: key_load_public: No such file or directory 
debug1: identity file /home/yusuf/.ssh/id_ed25519 type -1 
debug1: key_load_public: No such file or directory 
debug1: identity file /home/yusuf/.ssh/id_ed25519-cert type -1 
debug1: Enabling compatibility mode for protocol 2.0 
debug1: Local version string SSH-2.0-OpenSSH_6.9p1 Ubuntu-2ubuntu0.1 
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.1
debug1: match: OpenSSH_7.1 pat OpenSSH* compat 0x04000000 
debug1: Authenticating to 10.1.80.41:22 as 'root' 
debug1: SSH2_MSG_KEXINIT sent              
debug1: SSH2_MSG_KEXINIT received 
debug1: kex: server->client chacha20-poly1305@openssh.com none 
debug1: kex: client->server chacha20-poly1305@openssh.com none 
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY 
debug1: Server host key: ecdsa-sha2-nistp256
 SHA256:XpqS0ZXhoF/OsBmiD8bkpWaZ6Fbk5T3a2Xdq2E8127w 
The authenticity of    host '10.1.80.41 (10.1.80.41)' can't be established. ECDSA key
 fingerprint is SHA256:XpqS0ZXhoF/OsBmiD8bkpWaZ6Fbk5T3a2Xdq2E8127w. Are
 you sure you want to continue connecting (yes/no)? yes 
Warning:
Permanently added '10.1.80.41' (ECDSA) to the list of known hosts.
 debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS
 debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST
 sent 
debug1: SSH2_MSG_SERVICE_ACCEPT received 
debug1: Authentication succeeded (none). Authenticated to 10.1.80.41 ([10.1.80.41]:22).
debug1: channel 0: new [client-session] 
debug1: Requesting no-more-sessions@openssh.com 
debug1: Entering interactive session.

我尝试更改 MTU，但没有成功。

我该如何解决这个问题？

【问题讨论】：

请编辑您的问题，以包含您正在运行的产生此结果的实际 ssh 命令。
拜托，除了提供实际命令之外，您能否确保日志中有换行符？目前，它非常难以阅读。
我编辑了我的问题。我运行“ssh root@10.1.80.x”命令
请注意，您发送的复制和粘贴的日志非常难以阅读，并且需要在中间有换行符。请在以后的问题中努力解决这些问题。谢谢
服务器的ssh版本是OpenSsh 7.1，客户端是OpenSSH 6.9，有问题吗？双方的版本必须相同吗？

标签： ssh openssh yocto

【解决方案1】：

问题完全是偶然解决的。我不知道为什么。

通常，在连接以太网电缆后，我一直在手动运行modprobe sunxi-gmac 和/etc/init.d/networking restart 命令。但是这一次，不小心忘记了事先插线，而是在/etc/init.d/networking restart命令运行期间插上（发送发现阶段）。令我惊讶的是，已经实现了ssh连接！这种行为是确定性的（尝试过）。

谁能解释一下这种奇怪的情况？为什么要在网络重新启动期间而不是在此之前插入以太网电缆？

【讨论】：