Blank Screen when accessing one (out of three) clusters

[darkpixel]

I have 3 clusters on Digital Ocean under various accounts.
I have always been able to connect to them with Lens.
About a week ago, I suddenly couldn't connect to one of the clusters.
I've tried deleting and re-adding the config in kubectl, I've tried deleting and re-adding it to Lens.
I just get a blank screen. kubectl works fine, it's just Lens that isn't showing anything.
Lens has no trouble with the other clusters. They are all running the same version.

Here's a screenshot of Lens and the terminal I launched it from when I try to connect to the cluster that Lens is having issues with:

• Lens Version: 5.2.5
• OS: Linux (Mint)
• Installation method (e.g. snap or AppImage in Linux): AppImage

apiVersion: v1                                                                                                          
clusters:                                                                                                               
- cluster:                                                                                                              
    certificate-authority-data: --redacted--
    server: https://--redacted--.k8s.ondigitalocean.com                                         
  name: do-sfo2-aaronkube                                                                                               
- cluster:                                                                                                              
    certificate-authority-data: --redacted--
    server: https://--redacted--.k8s.ondigitalocean.com                                         
  name: do-sfo2-caitkube                                                                                                
- cluster:                                                                                                              
    certificate-authority-data: --redacted--
    server: https://--redacted--.k8s.ondigitalocean.com                                         
  name: do-sfo3-personalkube                                                                                            
contexts:                                                                                                               
- context:                                                                                                              
    cluster: do-sfo2-aaronkube                                                                                          
    user: do-sfo2-aaronkube-admin                                                                                       
  name: do-sfo2-aaronkube                                                                                               
- context:                                                                                                              
    cluster: do-sfo2-caitkube                                                                                           
    user: do-sfo2-caitkube-admin                                                                                        
  name: do-sfo2-caitkube                                                                                                
- context:                                                                                                              
    cluster: do-sfo3-personalkube                                                                                       
    user: do-sfo3-personalkube-admin                                                                                    
  name: do-sfo3-personalkube                                                                                            
current-context: do-sfo2-aaronkube                                                                                      
kind: Config                                                                                                            
preferences: {}                                                                                                         
users:                                                                                                                  
- name: do-sfo2-aaronkube-admin                                                                                         
  user:                                                                                                                 
    exec:                                                                                                               
      apiVersion: client.authentication.k8s.io/v1beta1                                                                  
      args:                                                                                                             
      - kubernetes                                                                                                      
      - cluster                                                                                                         
      - kubeconfig                                                                                                      
      - exec-credential                                                                                                 
      - --version=v1beta1                                                                                               
      - --context=cait                                                                                                  
      - 28472d7b-cac9-4eb7-redacted
      command: doctl                                                                                                    
      env: null                                                                                                         
      provideClusterInfo: false                                                                                         
- name: do-sfo2-caitkube-admin                                                                                          
  user:                                                                                                                 
    exec:                                                                                                               
      apiVersion: client.authentication.k8s.io/v1beta1                                                                  
      args:                                                                                                             
      - kubernetes                                                                                                      
      - cluster                                                                                                         
      - kubeconfig                                                                                                      
      - exec-credential                                                                                                 
      - --version=v1beta1                                                                                               
      - --context=cait                                                                                                  
      - 016d3b15-5806-4f83-8921-redacted
      command: doctl                                                                                                    
      env: null                                                                                                         
      provideClusterInfo: false                                                                                         
- name: do-sfo2-redactedkube-admin                                                                                        
  user:                                                                                                                 
    token: --redacted--
- name: do-sfo3-personalkube-admin                                                                                      
  user:                                                                                                                 
    exec:                                                                                                               
      apiVersion: client.authentication.k8s.io/v1beta1                                                                  
      args:                                                                                                             
      - kubernetes                                                                                                      
      - cluster                                                                                                         
      - kubeconfig                                                                                                      
      - exec-credential                                                                                                 
      - --version=v1beta1                                                                                               
      - --context=personal                                                                                              
      - 6f766a4d-2e46-4ca9-90c0-redacted
      command: doctl                                                                                                    
      env: null                                                                                                         
      provideClusterInfo: false                                                   

This is a screenshot of the developer console in Lens when it can't connect:

[liuzqt]

having same issue in MacOS

Lens: 5.2.5-latest.20211001.2
Electron: 12.2.1
Chrome: 89.0.4389.128
Node: 14.16.0

[jbeaudoin11]

Same for me. Installed lens about 2 weeks ago. Worked well for a while and now i just can't use it. Tried to reinstall the app, remove and add the cluster, still not able to do anything with the app.

I'm on Linux, Zorin OS

Lens: 5.2.5-latest.20211001.2
Electron: 12.2.1
Chrome: 89.0.4389.128
Node: 14.16.0

[Nokel81]

If you turn off "Download kubectl binaries matching the Kubernetes cluster version" in preferences does this problem resolve itself?

[jbeaudoin11]

@Nokel81 No

[Nokel81]

You have to restart lens currently for that option to be picked up. Including the tray icon

[jbeaudoin11]

@Nokel81 Yeah, did restart, the problem doesn't look to be a the kubectl level. At least it's not between kubectl and the cluster. Might be between Lens and kubectl 🤷‍♂️.

[darkpixel]

@Nokel81 Disabled "Download kubectl binaries matching the Kubernetes cluster version" in prefs, quit out of Lens, started it again. No change.

[jbeaudoin11]

Here is more details about the error message failed to send IPC message "renderer:cluster-id-of-active-view" to view "unknown=7"

Error: Could not call remote method send. Check that the method signature is correct. Underlying error: Object has been destroyed
Underlying stack: TypeError: Object has been destroyed
    at Object.b.send (electron/js2c/browser_init.js:161:2484)
    at /opt/Lens/resources/app.asar/node_modules/@electron/remote/dist/src/main/server.js:454:71
    at IpcMainImpl.<anonymous> (/opt/Lens/resources/app.asar/node_modules/@electron/remote/dist/src/main/server.js:313:27)
    at IpcMainImpl.emit (events.js:315:20)
    at IpcMainImpl.EventEmitter.emit (domain.js:467:12)
    at Object.<anonymous> (electron/js2c/browser_init.js:161:10374)
    at Object.emit (events.js:315:20)
    at Object.EventEmitter.emit (domain.js:467:12)
    at Object.emitter.emit (/opt/Lens/resources/app.asar/node_modules/@sentry/electron/dist/main/integrations/electron.js:63:25)

[Nokel81]

Yes thanks, that is a unrelated issue, sorry about the noise.

[Doraemoe]

I have the same problem. On mac, I need to delete ~/Library/Application Support/Lens/lens-local-storage* for it to work again.

[darkpixel]

Thanks @Doraemoe--that worked for me. ~/.config/Lens on Linux.

[liuzqt]

@Doraemoe also worked for me, thanks!

[phivid]

Not here ... I needed to delete wider on my macbookpro: rm -rf ~/Library/Application\ Support/Lens/*

[Bezz242]

Hi all,

Having the same problem. @Doraemoe 's fix works for me. BUT IT IS REPETITIVE.

Cannot tell what causes it, but in many cases, I had a VPN (over which I reach out to Kubernetes with Lens) drop out. Reconnecting didn't fix the problem.

Could this be a cause?

Cheers, B.

[Nokel81]

Would you mind providing files under lens-local-storage? What OS are you on?

[Bezz242]

Hi @Nokel81,

I'm on MacOS, Big Sur 11.6.

For now, it's working and I don't have the contents anymore. Will provide them next time the problem occurs.

Cheers, B.

[Nokel81]

Okay thanks, the path will be ~/Library/Application Support/lens/lens-local-storage/, I am also interested in ~/Library/Application Support/lens/lens-cluster-store.json

[Bezz242]

Hi @Nokel81,

I turned the VPN off and on again, but that in itself did not cause the problem. Overnight, the computer fell into stand-by modus and the VPN timed out. Now I have the problem again.
I will send you the files you mentioned. I will use the mail in your profile, as I am not sureif there is any sensitive data in them.

[Nokel81]

Thanks for the information, I will investigate. Thanks for the information about when it occurred. I will delete your information once I am done.

[Nokel81]

@Bezz242 Thanks for the files but unfortunately they don't seem to have the cause... will continue investigating.

[liuzqt]

@Nokel81 FYI this issue also occurs while I was using VPN, usually I left my laptop in stand-by mode over the night, and the next day this issue might happen, after VPN drop and reconnect (not sure it always happen everytime, I can make some observation later), the situation looks similar to what @Bezz242 was having.

And I'm running MacOS 10.15.6

I can send some file for your investigation, but is there some private channel I can share file?

[Nokel81]

My work email in smalton @ mirantis.com if that works for you

[liuzqt]

@Nokel81 sent, thanks

[damour]

The same problem. Works fine after removing /lens-local-storage/ content.

[Nokel81]

Could people please try 5.3.0-alpha.11 from one of the following:

• https://api.k8slens.dev/binaries/alpha.dmg
• https://api.k8slens.dev/binaries/alpha-arm64.dmg
• https://api.k8slens.dev/binaries/alpha.exe
• https://api.k8slens.dev/binaries/alpha.x86_64.AppImage
• https://api.k8slens.dev/binaries/alpha.x86_64.snap
• https://api.k8slens.dev/binaries/alpha.amd64.deb
• https://api.k8slens.dev/binaries/alpha.x86_64.rpm

And see if the variety of fixes we have merged resolves this issue for people.

[larrywax]

Could people please try 5.3.0-alpha.11 from one of the following:

• https://api.k8slens.dev/binaries/alpha.dmg
• https://api.k8slens.dev/binaries/alpha-arm64.dmg
• https://api.k8slens.dev/binaries/alpha.exe
• https://api.k8slens.dev/binaries/alpha.x86_64.AppImage
• https://api.k8slens.dev/binaries/alpha.x86_64.snap
• https://api.k8slens.dev/binaries/alpha.amd64.deb
• https://api.k8slens.dev/binaries/alpha.x86_64.rpm

And see if the variety of fixes we have merged resolves this issue for people.

It seems to be working now!

[darkpixel]

I only ran into the issue once. I was never able to reproduce it reliably, so I can't say that 5.3.0-alpha.11 fixed it or not.

[hugginsio]

On launch of 5.3.0-alpha.11, I still experienced the issue. However, after deleting /lens-local-storage/*, I have not been able to reproduce the issue again.

[Nokel81]

@damour So you also have the problem that you seem to be missing some data for that pod-logs tab. Which would throw an UnhandledPromiseRejectionError. That should be fixed by #4376

[DerGut]

The latest beta seems to solve the issue I had in #4408

[pablodz]

same here

[Nokel81]

I have found the cause of why this happens. It happens when we set state within a render function, thus causing react never to render anything and go into a hot loop before crashing on OOM.

#4376 should fix this for some of the cases, but I will need to do a thorough check in all of our components to make sure that we are not doing that anymore

[Nokel81]

Closing as this has been fixed in master.

[pablodz]

Thanks @Nokel81

[ramyadmz]

command + r solved my issue.

[mahmoudhossam]

I'm still having this issue, with the following warnings in devtools:

[LENS-VIEW]: not initializing view; unknown clusterId="undefined"
__webpack_modules__.1246.BrowserConsole.log @ BrowserConsole.js:41

I've already tried clearing the whole ~/Library/Application Support/lens/ folder and unchecking the "Download kubectl binaries matching the Kubernetes cluster version" checkbox in preferences.

Cmd+R does solve the problem temporarily, but it resets my namespace selection and I have to do this every time I start up Lens which is quite annoying.