vswitch not found hyperV while running minikube start - docker

Question

I had created a Virtual switch with the name "Minikube2" . Previously I had created Virtual switch with the name "minikube" ,but deleted it later as there was config issue.
Did all the required configuration -"sharing on ethernet .."
Now when I try to run
minikube start --kubernetes-version="v1.10.3" --vm-driver="hyperv" --hyperv-virtual-switch="minikube2"
it downloads the ISO , but fails to configure the switch -
it says vswitch "minikube2" not found

Answer 1

Short answer is to delete C:\Users\%USERNAME%\.minikube and try again.
Below is my investigation:
First I have created Virtual Switch "minikube", started the cluster and it worked as expected.
Then I stopped minikube, created new "Minikube2" switch and started minikube
minikube start --kubernetes-version="v1.10.3" --vm-driver="hyperv" --hyperv-virtual-switch="minikube2" --v=9
Appeared issue:
Starting local Kubernetes v1.10.3 cluster... Starting VM... [executing
==>] : C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -NoProfile -NonInteractive ( Hyper-V\Get-VM minikube ).state [stdout =====>] : Off
[stderr =====>] : [executing ==>] :
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -NoProfile
-NonInteractive Hyper-V\Start-VM minikube [stdout =====>] : [stderr =====>] : Hyper-V\Start-VM : 'minikube' failed to start. Synthetic Ethernet Port (Instance ID AF9D08DC-2625-4F24-93E5-E09BAD904899):
Error 'Insufficient system resources exist to complete the requested
service.'. Failed to allocate resources while connecting to a virtual
network. The Ethernet switch may not exist. 'minikube' failed to
start. (Virtual machine ID 863D6558-78EC-4648-B712-C1FDFC907588)
'minikube' Synthetic Ethernet Port: Failed to finish reserving
resources with Error 'Insufficient system resources exist to complete
the requested service.' (0x800705AA). (Virtual machine ID
863D6558-78EC-4648-B712-C1FDFC907588) 'minikube' failed to allocate
resources while connecting to a virtual network: Insufficient system
resources exist to complete the requested service. (0x800705AA)
(Virtual Machine ID 863D6558-78EC-4648-B712-C1FDFC907588). The
Ethernet switch may not exist. Could not find Ethernet switch
'minikube'. At line:1 char:1
+ Hyper-V\Start-VM minikube
+ ~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [Start-VM], VirtualizationException
+ FullyQualifiedErrorId : Unspecified,Microsoft.HyperV.PowerShell.Commands.StartVM
E1022 12:50:43.384867 6216 start.go:168] Error starting host: Error
starting stopped host: exit status 1.
Retrying. E1022 12:50:43.398832 6216 start.go:174] Error starting
host: Error starting stopped host: exit status 1 PS
C:\Windows\system32>
Then I deleted C:\Users\%USERNAME%\.minikube , minikube vm inside Hyper-V and started again:
C:\Windows\system32> minikube start --kubernetes-version="v1.10.3" --vm-driver="hyperv" --hyperv-virtual-switch="minikube2" --v=9
Result:
Starting local Kubernetes v1.10.3 cluster... Starting VM...
Downloading Minikube ISO
170.78 MB / 170.78 MB [============================================] 100.00% 0s
Creating CA: C:\Users\Vitalii.minikube\certs\ca.pem
Creating client certificate: C:\Users\Vitalii.minikube\certs\cert.pem
----- [stderr =====>] : Using switch "Minikube2"
----- Moving files into cluster...
Downloading kubeadm v1.10.3
Downloading kubelet v1.10.3 Finished
Downloading kubeadm v1.10.3 Finished
Finished Downloading kubelet v1.10.3
Setting up certs... Connecting to
cluster... Setting up kubeconfig...
Starting cluster components...
Kubectl is now configured to use the cluster.
PS C:\Windows\system32> kubectl get pods --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system coredns-c4cffd6dc-cjzsm 1/1 Running 0 1m
kube-system etcd-minikube 1/1 Running 0 56s
kube-system kube-addon-manager-minikube 1/1 Running 0 13s
kube-system kube-apiserver-minikube 1/1 Running 0 41s
kube-system kube-controller-manager-minikube 1/1 Running 0 1m
kube-system kube-dns-86f4d74b45-w62rv 2/3 Running 0 1m
kube-system kube-proxy-psgss 1/1 Running 0 1m
kube-system kube-scheduler-minikube 1/1 Running 0 21s
kube-system kubernetes-dashboard-6f4cfc5d87-jz266 1/1 Running 0 1m
kube-system storage-provisioner 1/1 Running 0 1m

Answer 2

It looks like HyperV driver has some problems running Minikube. For me when trying to run it on Windows it was much simpler to use the docker driver. Just run:
minikube start --driver=docker
and it works without problems. Make sure your docker daemon is running e.g. with Docker Desktop. For reference about drivers look here: https://kubernetes.io/docs/setup/learning-environment/minikube/#specifying-the-vm-driver