ssh命令无限期挂起

分类：编程问答

如何解决ssh命令无限期挂起

我正在尝试通过SSH远程登录到ubuntu 18.04，并且在验证密码后，我的ssh命令执行挂起。我尝试了很多在网上找到的解决方案，但到目前为止没有任何效果。

通过以下命令，我得到以下输出：

ssh -vvvvv <user>@<IP> 

neha@10.151.193.90's password: 
debug3: send packet: type 50
debug2: we sent a password packet,wait for reply
debug3: receive packet: type 52
debug1: Authentication succeeded (password).
Authenticated to 10.151.193.90 ([10.151.193.90]:22).
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug3: send packet: type 90
debug1: Requesting no-more-sessions@openssh.com
debug3: send packet: type 80
debug1: Entering interactive session.
debug1: pledge: network
debug3: receive packet: type 80
debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0
debug3: receive packet: type 91
debug2: channel_input_open_confirmation: channel 0: callback start
debug2: fd 3 setting TCP_NODELAY
debug3: ssh_packet_set_tos: set IP_TOS 0x10
debug2: client_session2_setup: id 0
debug2: channel 0: request pty-req confirm 1
debug3: send packet: type 98
debug1: Sending environment.
debug3: Ignored env CLUTTER_IM_MODULE
debug3: Ignored env CONDA_SHLVL
debug3: Ignored env LS_COLORS
debug3: Ignored env CONDA_EXE
debug3: Ignored env LESSCLOSE
debug3: Ignored env XDG_MENU_PREFIX
debug1: Sending env LANG = en_US.UTF-8
debug2: channel 0: request env confirm 0
debug3: send packet: type 98
debug3: Ignored env DISPLAY
debug3: Ignored env GNOME_SHELL_SESSION_MODE
debug3: Ignored env COLORTERM
debug3: Ignored env USERNAME
debug3: Ignored env XDG_VTNR
debug3: Ignored env SSH_AUTH_SOCK
debug3: Ignored env _CE_M
debug3: Ignored env XDG_SESSION_ID
debug3: Ignored env USER
debug3: Ignored env DESKTOP_SESSION
debug3: Ignored env QT4_IM_MODULE
debug3: Ignored env TEXTDOMAINDIR
debug3: Ignored env GNOME_TERMINAL_SCREEN
debug3: Ignored env PWD
debug3: Ignored env HOME
debug3: Ignored env CONDA_PYTHON_EXE
debug3: Ignored env TEXTDOMAIN
debug3: Ignored env SSH_AGENT_PID
debug3: Ignored env QT_ACCESSIBILITY
debug3: Ignored env XDG_SESSION_TYPE
debug3: Ignored env XDG_DATA_DIRS
debug3: Ignored env _CE_CONDA
debug3: Ignored env XDG_SESSION_DESKTOP
debug3: Ignored env GJS_DEBUG_OUTPUT
debug3: Ignored env GTK_MODULES
debug3: Ignored env WINDOWPATH
debug3: Ignored env TERM
debug3: Ignored env SHELL
debug3: Ignored env VTE_VERSION
debug3: Ignored env QT_IM_MODULE
debug3: Ignored env XMODIFIERS
debug3: Ignored env IM_CONFIG_PHASE
debug3: Ignored env XDG_CURRENT_DESKTOP
debug3: Ignored env GPG_AGENT_INFO
debug3: Ignored env GNOME_TERMINAL_SERVICE
debug3: Ignored env XDG_SEAT
debug3: Ignored env SHLVL
debug3: Ignored env GDMSESSION
debug3: Ignored env GNOME_DESKTOP_SESSION_ID
debug3: Ignored env LOGNAME
debug3: Ignored env DBUS_SESSION_BUS_ADDRESS
debug3: Ignored env XDG_RUNTIME_DIR
debug3: Ignored env XAUTHORITY
debug3: Ignored env XDG_CONFIG_DIRS
debug3: Ignored env PATH
debug3: Ignored env GJS_DEBUG_TOPICS
debug3: Ignored env SESSION_MANAGER
debug3: Ignored env LESSOPEN
debug3: Ignored env GTK_IM_MODULE
debug3: Ignored env _
debug2: channel 0: request shell confirm 1
debug3: send packet: type 98
debug2: channel_input_open_confirmation: channel 0: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
debug3: receive packet: type 100
debug2: channel_input_status_confirm: type 100 id 0
PTY allocation request failed on channel 0
debug2: channel 0: rcvd adjust 2097152
debug3: receive packet: type 99
debug2: channel_input_status_confirm: type 99 id 0
debug2: shell request accepted on channel 0

我尝试了以下命令，并输出为：

ssh -vvvvv <user>@<IP> "/bin/bash -i" 

neha@10.151.193.90's password: 
debug3: send packet: type 50
debug2: we sent a password packet,wait for reply
debug3: receive packet: type 52
debug1: Authentication succeeded (password).
Authenticated to 10.151.193.90 ([10.151.193.90]:22).
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug3: send packet: type 90
debug1: Requesting no-more-sessions@openssh.com
debug3: send packet: type 80
debug1: Entering interactive session.
debug1: pledge: network
debug3: receive packet: type 80
debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0
debug3: receive packet: type 91
debug2: channel_input_open_confirmation: channel 0: callback start
debug2: fd 3 setting TCP_NODELAY
debug3: ssh_packet_set_tos: set IP_TOS 0x08
debug2: client_session2_setup: id 0
debug1: Sending environment.
debug3: Ignored env CLUTTER_IM_MODULE
debug3: Ignored env CONDA_SHLVL
debug3: Ignored env LS_COLORS
debug3: Ignored env CONDA_EXE
debug3: Ignored env LESSCLOSE
debug3: Ignored env XDG_MENU_PREFIX
debug1: Sending env LANG = en_US.UTF-8
debug2: channel 0: request env confirm 0
debug3: send packet: type 98
debug3: Ignored env DISPLAY
debug3: Ignored env GNOME_SHELL_SESSION_MODE
debug3: Ignored env COLORTERM
debug3: Ignored env USERNAME
debug3: Ignored env XDG_VTNR
debug3: Ignored env SSH_AUTH_SOCK
debug3: Ignored env _CE_M
debug3: Ignored env XDG_SESSION_ID
debug3: Ignored env USER
debug3: Ignored env DESKTOP_SESSION
debug3: Ignored env QT4_IM_MODULE
debug3: Ignored env TEXTDOMAINDIR
debug3: Ignored env GNOME_TERMINAL_SCREEN
debug3: Ignored env PWD
debug3: Ignored env HOME
debug3: Ignored env CONDA_PYTHON_EXE
debug3: Ignored env TEXTDOMAIN
debug3: Ignored env SSH_AGENT_PID
debug3: Ignored env QT_ACCESSIBILITY
debug3: Ignored env XDG_SESSION_TYPE
debug3: Ignored env XDG_DATA_DIRS
debug3: Ignored env _CE_CONDA
debug3: Ignored env XDG_SESSION_DESKTOP
debug3: Ignored env GJS_DEBUG_OUTPUT
debug3: Ignored env GTK_MODULES
debug3: Ignored env WINDOWPATH
debug3: Ignored env TERM
debug3: Ignored env SHELL
debug3: Ignored env VTE_VERSION
debug3: Ignored env QT_IM_MODULE
debug3: Ignored env XMODIFIERS
debug3: Ignored env IM_CONFIG_PHASE
debug3: Ignored env XDG_CURRENT_DESKTOP
debug3: Ignored env GPG_AGENT_INFO
debug3: Ignored env GNOME_TERMINAL_SERVICE
debug3: Ignored env XDG_SEAT
debug3: Ignored env SHLVL
debug3: Ignored env GDMSESSION
debug3: Ignored env GNOME_DESKTOP_SESSION_ID
debug3: Ignored env LOGNAME
debug3: Ignored env DBUS_SESSION_BUS_ADDRESS
debug3: Ignored env XDG_RUNTIME_DIR
debug3: Ignored env XAUTHORITY
debug3: Ignored env XDG_CONFIG_DIRS
debug3: Ignored env PATH
debug3: Ignored env GJS_DEBUG_TOPICS
debug3: Ignored env SESSION_MANAGER
debug3: Ignored env LESSOPEN
debug3: Ignored env GTK_IM_MODULE
debug3: Ignored env _
debug1: Sending command: /bin/bash -i
debug2: channel 0: request exec confirm 1
debug3: send packet: type 98
debug2: channel_input_open_confirmation: channel 0: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
debug2: channel 0: rcvd adjust 2097152
debug3: receive packet: type 99
debug2: channel_input_status_confirm: type 99 id 0
debug2: exec request accepted on channel 0

我还尝试了如下所示的ssh命令，但该命令与上面的同一个地方挂起了：

ssh -vvvvv <user>@<IP> "uptime"

我也尝试卸载和挂载/ dev / pts，但是没有帮助。还尝试在sshd_config文件中添加UseDNS no，但未做任何更改。尝试在此主机上创建另一个用户以验证这是否可能是某个特定于用户的问题，但是没有运气。尝试传递选项 ssh -o IPQoS=throughput ...，但也无济于事。

任何人都可以指点我这里可能是个问题。

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