Minikube: writing kubeconfig: Error writing file : open : no such file or directory

[tstromberg]

@james-dc commented on Sat Apr 13 2019

This is a Bug Report

Problem:
Running minikube start as the setup guide suggests yields the following failure:

james@james-desktop:~$ cat /etc/*-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.10
DISTRIB_CODENAME=cosmic
DISTRIB_DESCRIPTION="Ubuntu 18.10"
NAME="Ubuntu"
VERSION="18.10 (Cosmic Cuttlefish)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.10"
VERSION_ID="18.10"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=cosmic
UBUNTU_CODENAME=cosmic
james@james-desktop:~$ curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 \
>   && chmod +x minikube
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 38.2M  100 38.2M    0     0  6992k      0  0:00:05  0:00:05 --:--:-- 7456k
james@james-desktop:~$ sudo cp minikube /usr/local/bin && rm minikube
james@james-desktop:~$ minikube start
😄  minikube v1.0.0 on linux (amd64)
🤹  Downloading Kubernetes v1.14.0 images in the background ...
2019/04/13 20:05:33 No matching credentials were found, falling back on anonymous
2019/04/13 20:05:33 No matching credentials were found, falling back on anonymous
2019/04/13 20:05:33 No matching credentials were found, falling back on anonymous
2019/04/13 20:05:33 No matching credentials were found, falling back on anonymous
2019/04/13 20:05:33 No matching credentials were found, falling back on anonymous
2019/04/13 20:05:33 No matching credentials were found, falling back on anonymous
2019/04/13 20:05:33 No matching credentials were found, falling back on anonymous
2019/04/13 20:05:33 No matching credentials were found, falling back on anonymous
2019/04/13 20:05:33 No matching credentials were found, falling back on anonymous
2019/04/13 20:05:33 No matching credentials were found, falling back on anonymous
🔥  Creating virtualbox VM (CPUs=2, Memory=2048MB, Disk=20000MB) ...
💿  Downloading Minikube ISO ...
2019/04/13 20:05:33 No matching credentials were found, falling back on anonymous
2019/04/13 20:05:33 No matching credentials were found, falling back on anonymous
2019/04/13 20:05:33 No matching credentials were found, falling back on anonymous
 142.88 MB / 142.88 MB [============================================] 100.00% 0s
📶  "minikube" IP address is 192.168.99.105
🐳  Configuring Docker as the container runtime ...
🐳  Version of container runtime is 18.06.2-ce
⌛  Waiting for image downloads to complete ...
✨  Preparing Kubernetes environment ...
💾  Downloading kubeadm v1.14.0
💾  Downloading kubelet v1.14.0

💣  Failed to setup kubeconfig: writing kubeconfig: Error writing file : open : no such file or directory

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

I found running sudo minikube start lets minikube start successfully:

james@james-desktop:~$ sudo minikube start
😄  minikube v1.0.0 on linux (amd64)
🤹  Downloading Kubernetes v1.14.0 images in the background ...
🔥  Creating virtualbox VM (CPUs=2, Memory=2048MB, Disk=20000MB) ...
📶  "minikube" IP address is 192.168.99.107
🐳  Configuring Docker as the container runtime ...
🐳  Version of container runtime is 18.06.2-ce
⌛  Waiting for image downloads to complete ...
✨  Preparing Kubernetes environment ...
🚜  Pulling images required by Kubernetes v1.14.0 ...
🚀  Launching Kubernetes v1.14.0 using kubeadm ... 
⌛  Waiting for pods: apiserver proxy etcd scheduler controller dns
🔑  Configuring cluster permissions ...
🤔  Verifying component health .....
💗  kubectl is now configured to use "minikube"
💡  For best results, install kubectl: https://kubernetes.io/docs/tasks/tools/install-kubectl/
🏄  Done! Thank you for using minikube!

However any further interaction with minikube / kubectl also requires the use of sudo to function properly which is not desirable.

Page to Update:
https://kubernetes.io/docs/tasks/tools/install-minikube/

[afbjorklund]

The error indicates that the filename was "":

        return errors.Wrapf(err, "Error writing file %s", filename)

[tuptaker]

I'm having the same issue. Which file is this referring to and how is it set? Is it ~/.kube/config?

[tuptaker]

So, I had KUBECONFIG set to a list of configs for various clusters I was working with. Apparently, this was prohibiting Minikube from starting. To resolve, I unset KUBECONFIG before starting minikube.

unset KUBECONFIG
minikube start

When you're done using minikube and have stopped it, you can source your .bashrc or .bash_profile (wherever KUBECONFIG is defined) or restart your terminal and resume working with the other clusters.

Hope this helps someone.

[den-is]

same here with minikube 1.3.0 on macos 10.14.6

minikube start --v=3
😄  minikube v1.3.0 on Darwin 10.14.6
💡  Tip: Use 'minikube start -p <name>' to create a new cluster, or 'minikube delete' to delete this one.
🏃  Using the running virtualbox "minikube" VM ...
⌛  Waiting for the host to be provisioned ...
Waiting for SSH to be available...
Detecting the provisioner...
Setting Docker configuration on the remote daemon...
🐳  Preparing Kubernetes v1.15.2 on Docker 18.09.8 ...

💣  Failed to setup kubeconfig: writing kubeconfig: Error writing file : open : no such file or directory

😿  Sorry that minikube crashed.

[tstromberg]

@den-is Can you share the output of env | grep KUBECONFIG?

It seems possible that you have KUBECONFIG set to an invalid location in your environment. Alternatively, please share the output of:

minikube start --alsologtostderr -v=4

Thanks!

[medyagh]

I am curious why your customse kubeconfig was not usable by minikube ! if this is the case ! minikube shouldn't have cared ! if it doest, we need to detect and let user know by a solution message.

[den-is]

@tstromberg and I think that is pointed to right location

env | grep -i kube
KUBECONFIG=:/Users/den/.kube/config:/Users/den/.kube/config

I'm not sure why there is duplicate, but imagine it doesn't exist there, and there are many other "concatenated" kubeconfigs for different clusters

[carlossg]

I had the same issue, the problem is the initial : in KUBECONFIG

KUBECONFIG=:/Users/den/.kube/config:/Users/den/.kube/config

should be

KUBECONFIG=/Users/den/.kube/config:/Users/den/.kube/config

Probably you have KUBECONFIG=$KUBECONFIG:/Users/den/.kube/config in your ~/.bash_profile

Although the error message could be clearer

[den-is]

@carlossg good point !

indeed I have export KUBECONFIG=$KUBECONFIG:$HOME/.kube/config

error message could be clearer and minikube can be smarter about empty strings too