Question 98029 in Nginx Question posted in
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Kubernetes Cluster- Worker node error while using kubectl – Nginx

I have created a Kubernetes cluster with 2 nodes, one Master node and one Worker node (2 different VMs).

The worker node has joined the cluster successfully, so when I run the commanad:
kubectl get nodes in my master node it appears the 2 nodes exists in the cluster!

However, when I run the command kubectl apply -f https://k8s.io/examples/controllers/nginx-deployment.yaml from my worker node terminal, in order to create a deployment in the worker node, I have the following error:

The connection to the server localhost:8080 was refused. - did you specify the right host or port?

Any help what is going on here?

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2

Answers


  1. 0

    The easy way to do it is to copy the config from master node usually found here : /etc/kubernetes/admin.conf , to whetever node you want to configure kubectl ( even on master node) . The location to be copied is : $HOME/.kube/config

    Also, you can this command from master node by specify nodeselector or label.

    Assign POD node

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  2. 0

    It looks like you have issue with your kubeconfig file, as usually localhost:8080 is the default server to connect in absence of this file . Generally, Kubernetes uses this file to store cluster authentication information and a list of contexts to which kubectl refers when running commands – that’s why kubectl can’t work properly without this file.

    To check the presence of kubeconfig file, enter this command: kubectl config view.

    Or just check the presence of the file named config in the $HOME/.kube directory, which is the default location for kubeconfig file.

    If it is absent, you would need to copy the config file to your node, e.g.:

    sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config 
sudo chown $(id -u):$(id -g) $HOME/.kube/config
sudo service kubelet restart

    It is also possible to generate config file in a more difficult way – instead of copying – as described here.

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