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Turn an ec2 instance, ubuntu 20.04 into a kubeadm worker node. Install necessary packages and have it join the cluster.

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Convert an ec2 instance running Ubuntu 20.04 into a kubeadm worker node, install necessary packages, and have it join the cluster.
  1. 1

    Update and upgrade packages

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    Ensure all packages are up to date before proceeding with the installation of Kubernetes components.
    sudo apt update sudo apt upgrade -y
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  2. 2

    Install Docker

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    Install Docker as it is a prerequisite for running Kubernetes components.
    sudo apt install docker.io -y sudo systemctl enable docker sudo systemctl start docker
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  3. 3

    Install kubeadm, kubelet, and kubectl for worker node

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    Install the necessary Kubernetes components on the worker node.

    sudo apt update sudo apt install -y apt-transport-https curl echo "deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.28/deb/ /" | sudo tee /etc/apt/sources.list.d/kubernetes.list curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.28/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg sudo apt update sudo apt install -y kubelet kubeadm kubectl sudo apt-mark hold kubelet kubeadm kubectl
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  4. 4

    Join the cluster

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    Use kubeadm to join the worker node to the Kubernetes cluster.
    sudo kubeadm join <master_node_ip>:<port> --token <token> --discovery-token-ca-cert-hash <hash>
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