Kubelet command stops responding for some time intervals

Hi
I have created a cluster and deployed nginx in 3 pods.
i am facing issue with my kubelet service.
Sometime it returns an output and sometimes it returns a message
The connection to the server k8scp:6443 was refused - did you specify the right host or port?
It works normally for sometime when I restart the kubelet service.
The swapoff is disabled.
What could be causing this and how to resolve this ?
Answers
-
Hi @aditya03,
So far I am concerned about the Kubernetes version mismatch between the two nodes - cp and worker. The lab guide in chapter 3 specifically calls for v1.27.1 for both nodes.
What is the version of your kubectl CLI? You can retrieve it with
kubectl version -o yaml
Are the two EC2 instances provisioned according to the video guide from the introductory chapter?
Please provide the outputs of the following commands:
kubectl get nodes -o wide
kubectl get pods -A -o wide
journalctl -u kubelet
#may require 'sudo'Regards,
-Chris0 -
Hi Chris
I think there is a minor difference in the kubectl versions.
I also followed the video guide to create instances.
PFA the screenshots for all the commands mentioned above.Thanks
0 -
0
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Hi @aditya03,
It seems you deviated from the installation instructions.
Please fix the following according to the latest lab guide release:
1 - the guest OS should be Ubuntu 20.04 LTS (yours is 22.04 LTS - not yet recommended for the lab environment)
2 - the installed Kubernetes version should be 1.27.1 for all three components: kubeadm, kubelet, and kubectlAlso, while provisioning the EC2 instances make sure to closely follow the demo video on AWS from the introductory chapter, for VPC, SG, and instance size details.
Regards,
-Chris0 -
I will go through the installation guide once again.
Thanks for resolving the query.Regards,
- Aditya
0
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