{"id":3167,"date":"2022-11-08T00:31:15","date_gmt":"2025-10-05T10:27:53","guid":{"rendered":""},"modified":"2025-02-02T00:46:19","modified_gmt":"2025-02-01T23:46:19","slug":"how-to-install-a-kubernetes-cluster-with-kubeadm-on-rocky-linux","status":"publish","type":"post","link":"https:\/\/netcloud24.com\/knowledgebase\/how-to-install-a-kubernetes-cluster-with-kubeadm-on-rocky-linux\/","title":{"rendered":"Linux VPS & VPS Windows Setup Guide | NetCloud24 a Kubernetes Cluster with Kubeadm on Rocky Linux"},"content":{"rendered":"

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Kubernetes is a powerful container orchestration tool that helps manage containerized applications in a clustered environment. In this guide, we will walk you through the installation of a Kubernetes cluster using Kubeadm on Rocky Linux. Whether you are deploying it on a local server or using a Windows VPS <\/a>, this tutorial provides all the necessary steps.<\/p>\n

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Step 1: Update Your System<\/h2>\n

Before installing Kubernetes, ensure your system is up to date. Run the following commands:<\/p>\n

sudo dnf update -y<\/code><\/pre>\n
Keeping your system updated is crucial for security and performance, whether you’re setting it up locally or on a VPS Windows VPS Servers<\/a> platform.<\/p>\n<\/section>\n
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Step 2: Install Required Packages<\/h2>\n
Install required packages and dependencies for Kubernetes:<\/p>\n
\r\nsudo dnf install -y curl wget vim net-tools\r\n            <\/code><\/pre>\n<\/section>\n
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Step 3: Disable Swap<\/h2>\n
Kubernetes requires swap to be disabled. Disable it using the following command:<\/p>\n
sudo swapoff -a<\/code><\/pre>\n
To make this change permanent, edit the \/etc\/fstab<\/code> file and comment out any swap entries:<\/p>\n
\r\nsudo vim \/etc\/fstab\r\n            <\/code><\/pre>\n<\/section>\n
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Step 4: Add Kubernetes Repository<\/h2>\n
Add the Kubernetes YUM repository to your system:<\/p>\n
\r\ncat <<\/code><\/pre>\n<\/section>\n
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Step 5: Install Kubeadm, Kubelet, and Kubectl<\/h2>\n
Install Kubeadm, Kubelet, and Kubectl using the following command:<\/p>\n
\r\nsudo dnf install -y kubelet kubeadm kubectl\r\n            <\/code><\/pre>\n
Enable and start the Kubelet service:<\/p>\n
\r\nsudo systemctl enable kubelet\r\nsudo systemctl start kubelet\r\n            <\/code><\/pre>\n<\/section>\n
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Step 6: Initialize the Kubernetes Cluster<\/h2>\n
To initialize the Kubernetes master node, run the following command:<\/p>\n
\r\nsudo kubeadm init --pod-network-cidr=192.168.0.0\/16\r\n            <\/code><\/pre>\n
After the initialization is complete, you will see instructions to set up your kubeconfig file. Run the following command to set up your configuration:<\/p>\n
\r\nmkdir -p $HOME\/.kube\r\nsudo cp -i \/etc\/kubernetes\/admin.conf $HOME\/.kube\/config\r\nsudo chown $(id -u):$(id -g) $HOME\/.kube\/config\r\n            <\/code><\/pre>\n<\/section>\n
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Step 7: Install a Pod Network Add-on<\/h2>\n
You need to install a network add-on to allow communication between the pods. For example, to install Calico, run the following command:<\/p>\n
\r\nkubectl apply -f https:\/\/docs.projectcalico.org\/manifests\/calico.yaml\r\n            <\/code><\/pre>\n<\/section>\n
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Step 8: Join Worker Nodes to the Cluster<\/h2>\n
If you have additional nodes to join to the cluster, you will need to run the command provided at the end of the `kubeadm init` output on each worker node. It will look something like this:<\/p>\n
\r\nkubeadm join :6443 --token  --discovery-token-ca-cert-hash sha256:\r\n            <\/code><\/pre>\n<\/section>\n
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Step 9: Verify the Cluster<\/h2>\n
To check the status of your Kubernetes cluster, use the following command:<\/p>\n
kubectl get nodes<\/code><\/pre>\n
You should see your master and any joined worker nodes listed as “Ready.”<\/p>\n<\/section>\n