Unable to start minikube with --extra-config 'apiserver.cors-allowed-origins=["http://*"]' on mac

[jwausle]

Complete cmd+output:

$ minikube --vm-driver=hyperkit --extra-config 'apiserver.cors-allowed-origins=["http://*"]' -v 10 start
* minikube v1.1.1 on darwin (amd64)
* Creating hyperkit VM (CPUs=2, Memory=2048MB, Disk=20000MB) ...
Found binary path at /usr/local/bin/docker-machine-driver-hyperkit
Launching plugin server for driver hyperkit
Plugin server listening at address 127.0.0.1:57386
...
* Configuring environment for Kubernetes v1.14.3 on Docker 18.09.6
Found binary path at /usr/local/bin/docker-machine-driver-hyperkit
Launching plugin server for driver hyperkit
Plugin server listening at address 127.0.0.1:57463
() Calling .GetVersion
Using API Version  1
() Calling .SetConfigRaw
() Calling .GetMachineName
(minikube) Calling .GetSSHHostname
(minikube) Calling .GetSSHPort
(minikube) Calling .GetSSHKeyPath
(minikube) Calling .GetSSHUsername
  - apiserver.cors-allowed-origins=["http://*"]
(minikube) Calling .GetURL
* Pulling images ...
* Unable to pull images, which may be OK: running cmd: sudo kubeadm config images pull --config /var/lib/kubeadm.yaml: command failed: sudo kubeadm config images pull --config /var/lib/kubeadm.yaml
stdout:
stderr: error converting YAML to JSON: yaml: line 4: did not find expected key
: Process exited with status 1
* Launching Kubernetes ...

X Error starting cluster: cmd failed: sudo /usr/bin/kubeadm init --config /var/lib/kubeadm.yaml  --ignore-preflight-errors=DirAvailable--etc-kubernetes-manifests,DirAvailable--data-minikube,FileAvailable--etc-kubernetes-manifests-kube-scheduler.yaml,FileAvailable--etc-kubernetes-manifests-kube-apiserver.yaml,FileAvailable--etc-kubernetes-manifests-kube-controller-manager.yaml,FileAvailable--etc-kubernetes-manifests-etcd.yaml,Port-10250,Swap
error converting YAML to JSON: yaml: line 4: did not find expected key

: Process exited with status 1

Output minikube logs:

minikube-logs.txt

The operating system version:

macos 10.14.5 (mojave)

[objectiveous]

I've seen similar issues.

minikube start --extra-config=apiserver.v=10 --vm-driver hyperkit --extra-config 'apiserver.cors-allowed-origins=["http://"]'  /default ⎈
😄 minikube v1.2.0 on darwin (amd64)
🔥 Creating hyperkit VM (CPUs=2, Memory=2048MB, Disk=20000MB) ...
🐳 Configuring environment for Kubernetes v1.15.0 on Docker 18.09.6
▪ apiserver.v=10
▪ apiserver.cors-allowed-origins=["http://"]
🚜 Pulling images ...
❌ Unable to pull images, which may be OK: running cmd: sudo kubeadm config images pull --config /var/lib/kubeadm.yaml: command failed: sudo kubeadm config images pull --config /var/lib/kubeadm.yaml
stdout:
stderr: error converting YAML to JSON: yaml: line 4: did not find expected key
: Process exited with status 1
🚀 Launching Kubernetes ...

💣 Error starting cluster: cmd failed: sudo /usr/bin/kubeadm init --config /var/lib/kubeadm.yaml --ignore-preflight-errors=DirAvailable--etc-kubernetes-manifests,DirAvailable--data-minikube,FileAvailable--etc-kubernetes-manifests-kube-scheduler.yaml,FileAvailable--etc-kubernetes-manifests-kube-apiserver.yaml,FileAvailable--etc-kubernetes-manifests-kube-controller-manager.yaml,FileAvailable--etc-kubernetes-manifests-etcd.yaml,Port-10250,Swap
error converting YAML to JSON: yaml: line 4: did not find expected key

: Process exited with status 1

😿 Sorry that minikube crashed. If this was unexpected, we would love to hear from you:
👉 https://github.com/kubernetes/minikube/issues/new

[tstromberg]

I bet this issue is due to a lack of quoting when we generate the kubeadm YAML.

The fix is likely to be adding double quotes around {{$val}} for the different kubeadm templates, such as:

minikube/pkg/minikube/bootstrapper/kubeadm/templates.go

Line 125 in 24ad1d8

{{$val}}

If you have a chance, give it a try and I'll be happy to review the PR. Help wanted!

[objectiveous]

It was indeed an issue w/ quotes. The following worked:

minikube start --extra-config=apiserver.v=10 --vm-driver hyperkit --extra-config "apiserver.cors-allowed-origins=["http://localhost:3000"]"

Unfortunately, I'm unable to open a PR to fix this (long story).

[jwausle]

One hint regarding http://* allowed redirections.

# The asterix '*' must escaped '\'on cmdline => 'http://\*'
minikube start \
   --vm-driver hyperkit \
   --extra-config "apiserver.cors-allowed-origins=["http://\*"]" 

@tstromberg

• it's possible to start minikube from kubeadm-template?
• it's possible to generate kubeadm-template from minikube command.

[tstromberg]

Closing as a workaround appears to have been found.

[tstromberg]

Related: #4806

[luchaoqi]

One hint regarding http://* allowed redirections.

# The asterix '*' must escaped '\'on cmdline => 'http://\*'
minikube start \
   --vm-driver hyperkit \
   --extra-config "apiserver.cors-allowed-origins=["http://\*"]" 

@tstromberg

• it's possible to start minikube from kubeadm-template?
• it's possible to generate kubeadm-template from minikube command.

Thanks for the hint. I have been searching for a solution to access the apiserver for days and it works like a charm!