Script and ansible playbook to setup K8s cluster on Ubuntu 20.04 or Debian 11

df-demo-setup.yaml

---
# ansible-playbook --connection=local -i "localhost,"  df-demo-setup.yaml
# or
# curl <IP>/df-demo-setup.yaml | ansible-playbook --connection=local -i "localhost," /dev/stdin
# With a sudo account
 -
   hosts: all
   gather_facts: no
   vars:
     k8s_type: microk8s
     k8s_version: 1.21/stable
   become: yes
   tasks:
   - name: Install packages
     apt:
       name: "{{packages}}"
     vars:
       packages:
         - curl
         - wget
         - python3-pip
         - jq
         - bash-completion
         - sudo
         - git
         - docker.io
         - snapd
         - iptables

   - name: whoami without become
     become: no
     changed_when: false
     command: whoami
     register: whoami

   - name: Set fact of no_become_user
     set_fact:
       no_become_user: "{{ whoami.stdout }}"

   - name: Get latest url for linux-amd64 release for kubectl
     uri:
       url: "https://storage.googleapis.com/kubernetes-release/release/stable.txt"
       return_content: true
       body_format: raw
     register: kubectl_response

   - name: Download and install kubectl
     get_url:
       url: "https://storage.googleapis.com/kubernetes-release/release/{{ kubectl_response.content | trim }}/bin/linux/amd64/kubectl"
       mode: 555
       dest: /usr/local/bin/kubectl
     debugger: on_failed

   - name: Get latest url for linux-amd64 release for skaffold
     uri:
       url: https://api.github.com/repos/GoogleContainerTools/skaffold/releases/latest
       return_content: true
       body_format: json
     register: skaffold_response

# Broken from skaffold, https://github.com/GoogleContainerTools/skaffold/issues/7165
#   - name: Download and install skaffold
#     get_url:
#       url: "{{ skaffold_response.json | to_json | from_json| json_query(\"assets[?ends_with(name,'linux-amd64')].browser_download_url | [0]\") }}"
#       mode: 555
#       dest: /usr/local/bin/skaffold
#     debugger: on_failed

   - name: Add autocomplete to .bashrc file
     become: no
     blockinfile:
       path: /home/{{ no_become_user }}/.bashrc
       backup: yes
       create: yes # not required. Create a new file if it doesn't exist.
       state: present # not required. choices: absent;present. Whether the block should be there or not.
       block: |
         # Souce the bash completion for kubernetes
         source <(kubectl completion bash)

         alias k=kubectl
         complete -F __start_kubectl k

         # Update microk8s config on login
         microk8s.config > ~/.kube/config

         # You can never have enough history
         export HISTSIZE=10000

         # Write every command from every bash to the history
         shopt -s histappend
         PROMPT_COMMAND="history -a;$PROMPT_COMMAND"

   - name: Install and configure microk8s
     block:

     - name: Install microk8s service
       snap:
         name: microk8s
         classic: yes
         channel: "{{ k8s_version }}"

     - name: Add user to docker and microk8s group
       user:
         name: "{{ no_become_user }}"
         append: yes
         groups:
           - docker
           - microk8s

     - name: Wait until Microk8s is running
       shell: source /etc/profile.d/apps-bin-path.sh && microk8s.status --wait-ready
       args:
         executable: /bin/bash

     - name: Enable dns
       shell: "source /etc/profile.d/apps-bin-path.sh && microk8s.enable dns"
       args:
         executable: /bin/bash

     - name: Enable storage
       shell: "source /etc/profile.d/apps-bin-path.sh && microk8s.enable storage"
       args:
         executable: /bin/bash

     - name: Enable registry
       shell: "source /etc/profile.d/apps-bin-path.sh && microk8s.enable registry"
       args:
         executable: /bin/bash

     when: k8s_type == "microk8s"

   - name: Create ~/.kube for user
     become: no
     file:
       path: /home/{{ no_become_user }}/.kube
       state: directory
       mode: '0750'

   - name: Create kubeconfig file
     shell: "source /etc/profile.d/apps-bin-path.sh && microk8s.config > /home/{{ no_become_user }}/.kube/config"
     args:
       executable: /bin/bash

   - name: Change kubeconfig file permissions
     file:
       path: /home/{{ no_become_user }}/.kube/config
       owner: "{{ no_become_user }}"
       group: microk8s
       mode: '0640'

UbuntuMicroK8sSetup.sh

#!/usr/bin/env bash

set -v
# Auto setup of microk8s in Ubuntu 20.04 or Debian 11

sudo apt-get update && sudo apt-get upgrade -y ansible

curl -sL https://gist.github.com/JohnKDay/4dee71ace86f98d6e46026bf755b0a87/raw/df-demo-setup.yaml | ansible-playbook --extra-vars="$@" --connection=local -i "localhost," /dev/stdin


set +v
echo "Logout and Login to inherit new docker and K8s GIDs"
echo "Microk8s kubeconfig is:"
echo "-----------------------"
sudo /snap/bin/microk8s config
echo "-----------------------"
echo "Logout and Login to inherit new docker and K8s GIDs and autocomplete"

Removed skaffold install due to issue, GoogleContainerTools/skaffold#7165
Also added function to set version of K8s cluster

Added iptables to apt list, Debian base does not have it installed be default and causes issues when using K3s when terminating a Pod.

command to select a microk8s version
curl -sL https://web.inafish.net/microk8s | bash -s "k8s_version=1.24/stable"

how to remove it after run the installation