If you cannot connect to a server using Workbench or a third-party remote connection tool such as PuTTY, Xshell, or SecureCRT, use a rescue connection (VNC) to access the server and troubleshoot issues.
Rescue connections do not support file uploads or downloads. In low-bandwidth network environments, you may experience delays, stuttering, or poor image quality. For regular access, we recommend connecting to your Simple Application Server using Workbench or a third-party client. For more information, see Connect to a Linux server and Connect to a Windows server.
Use cases
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Troubleshooting
If you cannot connect to a server using Workbench or a third-party remote connection tool due to high vCPU usage or SSH configuration changes, you can use a VNC connection to troubleshoot the server.
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Log on to a graphical user interface (GUI)
After setting up a graphical user interface (GUI) on an operating system like Ubuntu, you can use a VNC connection to access the server.
Prerequisites
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You have set a password for the Simple Application Server. For more information, see Set or reset server passwords.
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The Simple Application Server is in the Running state.
Procedure
A rescue connection session automatically disconnects after about 300 seconds of inactivity. If your session disconnects, you must reconnect.
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Go to the Servers page in the Simple Application Server console.
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On the server card, click Connect.
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In the Connect dialog box, in the Rescue Logon section, click Log on Now.
The system automatically redirects you to the rescue logon page. If the page does not open, check whether your browser is blocking pop-up windows.
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Connect to the server using the rescue connection.
Linux server
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Enter a username, such as
root, and pressEnter. -
Enter the server password and press
Enter.Note-
For security, the password is not displayed as you type. Ensure that you enter the correct password.
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To copy a long string of text, such as a file download URL, from your local device to the server, click copy command in the upper-right corner of the rescue page and paste the command into the dialog box that appears.
The following output shows a successful logon.
Alibaba Cloud Linux 3 (Soaring Falcon) Kernel 5.10.134-16.3.al8.x86_64 on an x86_64 iZbp1eixuzhxxxuf j7Z login: root Password: Last login: Mon Aug 26 17:01:39 from 100.xxx.2 Welcome to Alibaba Cloud Elastic Compute Service ! Updates Information Summary: available 33 Security notice(s) 7 Important Security notice(s) 20 Moderate Security notice(s) 6 Low Security notice(s) Run "dnf upgrade-minimal --security" to apply all updates.More details please refer to: https://help.aliyun.com/document_detail/416274.html [root@iZbp1exxxuf j7Z ~]#You can press CTRL+ALT+F1 through CTRL+ALT+F10 to switch between different VNC terminals. Each terminal can run a different program. The default terminal is CTRL+ALT+F1. For example, in the upper-left corner of the rescue connection page, select to switch to CTRL+ALT+F2.
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Windows server
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(Conditionally required) If the Windows server desktop is locked, in the upper-left corner of the page, select .
In the shortcut key dropdown menu, click CTRL+ALT+DELETE to send the key combination to unlock the desktop.
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On the Windows logon screen, enter the server password and press
Enter.Enter the Administrator account password, and click the submit button next to the password box to log in.
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FAQ
References
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Troubleshoot issues:
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Set up an Ubuntu graphical user interface (GUI):