kind: [connection]: Unable to access kind cluster inside a custom Github Action

What is happening?

I’m Using a KinD cluster in Github Action the flow of workflow yaml is:
- Creating KinD cluster (Created successfully)
- Getting Nodes via kubectl get nodes

NAME                 STATUS   ROLES    AGE   VERSION
kind-control-plane   Ready    master   68s   v1.17.0

Now I’m trying to use the cluster inside my personal Github action bypassing kubeconfig. It is showing connection error:

exit status 1: The connection to the server 127.0.0.1:32768 was refused - did you specify the right host or port?

Did I need to do anything else?

Workflow-yaml

name: Push
on:
  push:
    branches: [ master ]
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2

    - name: Creating KinD cluster
      run: |
        GO111MODULE=on 
        curl -Lo ./kind https://github.com/kubernetes sigs/kind/releases/download/v0.7.0/kind-$(uname)-amd64
        chmod +x ./kind
        sudo mv ./kind /usr/local/bin/kind
        kind version
        kind create cluster --loglevel debug
        sleep 60

    - name: Getting Nodes
      run: |
        kubectl get nodes

    - name: Set config
      run: echo ::set-env name=KUBE_CONFIG_DATA::$(base64 -w 0 ~/.kube/config)
  
      #This is the custom Github Action inside which the kubectl command is not running.
    - name: Running Litmus pod delete chaos experiment
      uses: uditgaurav/kubernetes-chaos@v0.1.0

About this issue

Original URL
State: closed
Created 4 years ago
Comments: 19 (12 by maintainers)

Most upvoted comments

Taking a second look: does this last action run in a container?

Localhost / the loopback interface is unique to each container. 127.0.0.1 is local to each container…

You can use kind export kubeconfig --internal on 0.7, on 0.8+ you’d either need this step to run on the kind network somehow (not sure if this is possible with GitHub actions), or else maybe https://github.com/kubernetes-sigs/kind/issues/1558

BenTheElder on May 27, 2020

Github Actions Ubuntu images come pre-installed with kind. You can find it out here or send a pr if you want to update it. https://github.com/actions/virtual-environments/search?q=kind&unscoped_q=kind

If you want a specific version of kind, use https://github.com/engineerd/setup-kind wihtout any issues. This works flawlessly.

tamalsaha on May 26, 2020

like, basically this is just docker networking, kind can’t do anything here. if you run containers on a different network and don’t connect them docker intentionally isolates them. you can connect them either by changing the container network when creating it or using docker network connect ...

the loopback address is only reachable from host networking because linux.

BenTheElder on Jul 8, 2021

awesome thanks!

I’d like to figure out 0.8+, but we can revisit that later 😃

BenTheElder on May 27, 2020

I forgot we only have “kind get kubeconfig --internal >$HOME/.kube/config”

This may be an issue on 0.8+ … I’m not sure if github exposes what docker network they use for actions or any way to configure it. it looks like no and no.

On Wed, May 27, 2020 at 1:53 PM UDIT GAURAV notifications@github.com wrote:

My kind version is 0.7 kind export kubeconfig --internal gives ERROR: unknown flag: --internal maybe I’m missing some parameter? So, I passed this to action and now it seems to be running fine for me.
- name: Export kubeconfig
  run: |
    kind get kubeconfig --name "kind" --internal | sed "s/kind-control-plane/$(docker inspect "kind-control-plane" --format "{{ .NetworkSettings.Networks.kind.IPAddress }}")/g" > config
— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/kubernetes-sigs/kind/issues/1619#issuecomment-634933009, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAHADK3BS4Q5BGCH4YRHVODRTV4SRANCNFSM4NISAQSQ .

BenTheElder on May 27, 2020