CKS CKA ckad change terminal to remote desktop

https://wuestkamp.medium.com/cks-cka-ckad-changed-terminal-to-remote-desktop-157a26c1d5e

CKS、CKA、CKAD The exam was held in 2022 year 6 Move month to PSI Bridge, Change the terminal to remote desktop , It now provides... To the remote desktop VNC Connect .

summary

• Replace remote terminal with remote desktop
• Not Linux Users' copy and paste will be different
• VNC The speed is expected / natural , But as slow as ever

this paper

Describes my 2022 year 6 month 27 Take part in CKAD The experience of the new interface during the exam .

What has changed ？

The content has not changed , The exam still follows the current course ：

https://github.com/cncf/curriculum

But you need to use Kubernetes Browser interface , Great changes have taken place .

Before -> after

Before you access the browser terminal . It can be opened in another tab or window of the local browser K8s file ：

Now you can access the full remote XFCE desktop , Will run terminal applications and Firefox. Will open in a remote browser K8s Docs：

What is no longer possible ？

• Use any pre created personal bookmarks
• Use multiple monitors

Why change ？

The following are all guesses , For unofficial reasons ..

It is possible to maintain the safety and good reputation of examinations mainly by increasing fairness and preventing cheating .

• It is a good thing to provide every examiner with exactly the same environment . There should be no advantage in creating many browser bookmarks or installing some browser plug-ins .
• By using remote virtual machines , Using locally installed applications is more difficult to cheat . Better prevent copying content and other sources
• No longer need to share your local screen and grant your data access to invigilators . So better data privacy .
• long-range VM Medium Firefox Will automatically block access to the forbidden url, This makes it easier for invigilators .
• In the future update, the test can be transferred to a more GUI Methods . It's like being able to open it intuitively in the browser Ingress/K8s-Dashboard service , instead of curl.

Speed

From the local desktop , You will notice a lag in the remote desktop . Such as moving windows or scrolling K8s file , I will accept it in a few minutes .

Terminal applications

You will use XFCE Terminal emulator . You can open multiple terminals and arrange them together or overlap each other . Before that , Just like tmux. You can also change the font size, color, etc , This is very useful for accessibility .

Visual text editor

Text editor Mousepad Available for editing YAML Visual editor for . But you cannot access the same file system as the terminal .

file system

Virtual terminals can access different file systems , for example Mousepad Editor or File Manager. This means that you cannot easily Mousepad Edit file , then kubectl apply Apply these files to the terminal . Maybe it will change in the future . You can edit... In the visual editor YAML, Then copy and paste it .

The Notepad is missing （ From the examination interface ）

There seems to be no notepad in the exam interface , At least I didn't see it . There? , You can store, for example, comments about problems to be solved later . Now you can simply use Mousepad Applications .

Copy and paste

Use the right mouse button menu to copy 、 Paste always works .

Ctrl+Shift+c and Ctrl+Shift+v Valid under the terminal .

Ctrl+c and Ctrl+v stay Firefox And other applications .

If the question on the left has a reproducible word , Then you can click to copy , Then use the context menu or Ctrl+Shift+v Paste into the terminal .

In the terminal , You can also mark text with the mouse , Then press the middle mouse button to insert . This is only valid when staying in the terminal .

Make sure that the .vimrc Or other indents , Otherwise, it will be very messy after pasting ：

:set expandtab
:set tabstop=2
:set shitftwidth=2

You want to Firefox When the content in is copied to the terminal , It will display a warning “ Unsafe paste ”. You can confirm it . This function can also be disabled in the terminal Preferences->General->Show unsafe paste dialog.

Firefox And allowed sites

The browser in the remote desktop is Firefox, It will automatically restrict access to any site other than the allowed site . It also shows you a list of allowed sites , But for safety's sake , Please remember the official website ：

https://kubernetes.io/docs

Multiple virtual desktops

XFCE Allows you to use multiple virtual desktops and switch between them with a single mouse click . You can install large terminals on one of them , Install large on the other Bowser. Or you can use only one virtual desktop .

There may be key combinations that switch between virtual desktops . Suppose you accidentally hit it , All your windows seem to be missing . under these circumstances , Just click on the top option .

Interface technology

• XFCE 4.14
• XFCE Terminal emulator （ Black bottom white character ）
• Ubuntu 20.04
• Maximum resolution ：1900x1200（ Even if your monitor + Higher resolution ）
• Firefox

Killer Shell Simulator

Killer.sh The simulator doesn't have a new remote desktop yet .

https://killer.sh/

These changes will be considered for adoption in the coming weeks and months . But it still allows users to choose a simple remote terminal to learn content .

summary

I support all changes to maintain certification reputation by providing more security .

Towards a more intuitive direction , You can open the exam for more users . In the absence of tmux It is a great advantage to open multiple terminals in the case of . I would like to see an easy way to use a visual text editor rather than just a console to get closer to reality .

VNC The connection speed is normal , And it's consistent , So I got used to it in a few minutes . For locations with low bandwidth , I'm sure Linux The foundation did pass measurements and figures .

communication

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