Skip to content

Instantly share code, notes, and snippets.

@sampathshivakumar

sampathshivakumar/all_nodes.sh

Created September 7, 2024 11:31
Show Gist options
  • Save sampathshivakumar/199858482e98bcd429a582459b0ecb83 to your computer and use it in GitHub Desktop.
Save sampathshivakumar/199858482e98bcd429a582459b0ecb83 to your computer and use it in GitHub Desktop.
Download ZIP

Revisions

  1. sampathshivakumar created this gist Sep 7, 2024.
    54 changes: 54 additions & 0 deletions all_nodes.sh
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,54 @@
    #!/bin/bash
    sudo swapoff -a

    # Enable IPv4 packet forwarding
    # sysctl params required by setup, params persist across reboots
    cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
    net.ipv4.ip_forward = 1
    EOF

    # Apply sysctl params without reboot
    sudo sysctl --system

    # Installing Containerd runtime using Docker repository.
    # Add Docker's official GPG key:
    sudo apt-get update
    sudo apt-get install ca-certificates curl -y
    sudo install -m 0755 -d /etc/apt/keyrings
    sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
    sudo chmod a+r /etc/apt/keyrings/docker.asc

    # Add the repository to Apt sources:
    echo \
    "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
    $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
    sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
    sudo apt-get update

    sudo apt-get install containerd.io -y

    containerd config default > /etc/containerd/config.toml

    sed -i 's/SystemdCgroup = false/SystemdCgroup = true/' /etc/containerd/config.toml

    sudo systemctl restart containerd

    # Update the apt package index and install packages needed to use the Kubernetes apt repository:
    sudo apt-get update
    # apt-transport-https may be a dummy package; if so, you can skip that package
    sudo apt-get install -y apt-transport-https ca-certificates curl gpg

    # Download the public signing key for the Kubernetes package repositories. The same signing key is used for all repositories so you can disregard the version in the URL
    # If the directory `/etc/apt/keyrings` does not exist, it should be created before the curl command, read the note below.
    # sudo mkdir -p -m 755 /etc/apt/keyrings
    curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.31/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg

    # This overwrites any existing configuration in /etc/apt/sources.list.d/kubernetes.list
    echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.31/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list

    # Update the apt package index, install kubelet, kubeadm and kubectl, and pin their version
    sudo apt-get update
    sudo apt-get install -y kubelet kubeadm kubectl
    sudo apt-mark hold kubelet kubeadm kubectl