Minikube: Error setting up kubeconfig: failed to encode config: converting to : type names don't match

[adityardesai]

Is this a BUG REPORT or FEATURE REQUEST? (choose one):
BUG REPORT

Minikube version (use minikube version):
minikube version: v0.19.1

Environment:

• OS (e.g. from /etc/os-release): Mac OS Sierra 10.12.5
• VM Driver (e.g. cat ~/.minikube/machines/minikube/config.json | grep DriverName):"DriverName": "virtualbox"
• ISO version (e.g. cat ~/.minikube/machines/minikube/config.json | grep -i ISO or minikube ssh cat /etc/VERSION): "Boot2DockerURL": "file:///Users/addesai/.minikube/cache/iso/minikube-v0.18.0.iso"
• Install tools:
• Others:

What happened:
When I run the command minikube start --vm-driver=virtualbox, I see the following error

Error setting up kubeconfig:  could not write to '/Users/adityardesai/.kube/config': failed to encode config: converting  to : type names don't match (Unknown, RawExtension), and no conversion 'func (runtime.Unknown, runtime.RawExtension) error' registered.
================================================================================
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To opt out of these messages, run the command:
    minikube config set WantReportErrorPrompt false
================================================================================
Please enter your response [Y/n]: 

What you expected to happen:
I expect the kubernetes to start working without this error.

How to reproduce it (as minimally and precisely as possible):
Start installing kubernetes from scratch on Mac OS and try to start it

Anything else do we need to know:

[darkowlzz]

@adityardesai is this still happening with minikube version: v0.20.0 ?
I am not able to reproduce it.

[hotcoder]

$ minikube start
Starting local Kubernetes v1.7.5 cluster...
Starting VM...

after this nothing is coming

[ColdHeat]

I have a similar issue.

I deleted ~/.minikube and redownloaded the ISO but still seems stuck.

❯ minikube start --vm-driver=vmwarefusion
Starting local Kubernetes v1.8.0 cluster...
Starting VM...
Downloading Minikube ISO
 140.01 MB / 140.01 MB [============================================] 100.00% 0s

I do not see a VM in the Fusion library either.

[ColdHeat]

For me the issue was Fusion was being blocked from loading.

https://superuser.com/questions/1256489/how-to-fix-vmware-fusion-pro-10-cannot-find-a-valid-peer-process-to-connect-to

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[blind3dd]

answered to the post out here (more detailed)
https://superuser.com/questions/1295452/how-to-run-docker-in-virtualbox-mac-os-sierra/1317221#1317221

This is how you solve it:
basically minikube stop and delete $HOME/.minikube content, then kext disable, then firewall privacy change, which is allowing from anywhere click button in system preferences firewall that shall appear, then VirtualBox reinstall process (update/reinstall, if fails don't worry), then
unload and load back again the Virtualbox plugins from "/Library/Application Support/VirtualBox" folder.
Having selected "allow from anywhere" from after kext disable step you'd be able to allow again, but this time it'll be from Oracle America specifically during loading these plugins from VirtualBox folder. Click on it.

Now, you're good to go
minikube start --vm-driver=virtualbox
🥁

[chorwitt]

I found that simply running "rm -rf $HOME/.minikube" and then running "minikube start --vm-driver=virtualbox" fixed minikube not running for me.

[blind3dd]

For me obviously, it wouldn’t - spent like half of the day doing a loot of stuff about it the other day - found out that really lot of people have encountered similar issues about that minikube, virtual box or both. All answers would indicate on sth with only part of the issue context in them or sometimes sb would be pointing the security out . It’s worth adding, that Virtualbox driver would actually log that It was well known issue (during minikube start) and that updating to certain version should help / for many it Haven’t.

[zgramana]

I had this issue on macOS 10.14 (Mojave) and resolved it by switching to HyperKit (virtualbox is the default) by running the following commands:

rm -Rf ~/.minikube
brew install docker-machine-driver-hyperkit
sudo chown root:wheel /usr/local/opt/docker-machine-driver-hyperkit/bin/docker-machine-driver-hyperkit
sudo chmod u+s /usr/local/opt/docker-machine-driver-hyperkit/bin/docker-machine-driver-hyperkit
minikube start --vm-driver=hyperkit

[tstromberg]

If you do run into this - look at ~/.kube/config, because something in there is corrupt, or at least not parseable by minikube.

If you want to be destructive:

rm ~/.kube/config && minikube delete

[zgramana]

I did quite a bit of digging, and it boiled down to Start never actually started and eventually found an error at -v9 saying the OS could not be identified. AFAICT .kube/config looked normal, but that was just by eyeball so I could easily have missed something small (or invisible chars).