Ansible Collection: k3sup

This repository contains sample code for automating k3sup installation and management using Ansible.

Ansible is a radically simple IT automation engine that automates cloud provisioning, configuration management, application deployment, intra-service orchestration, and many other IT needs. k3sup is a light-weight utility to get from zero to KUBECONFIG with k3s on any local or remote VM. All you need is ssh access and the k3sup binary to get kubectl access immediately.

Installation

ansible-galaxy collection install vandot.k3sup

Example

Start three nodes cluster on DO

---
- hosts: localhost
  gather_facts: true
  connection: local
  roles:
    - role: vandot.k3sup.k3sup
  tasks:
    - name: Create ssh key
      community.digitalocean.digital_ocean_sshkey:
        oauth_token: "{{ oauth_token }}"
        name: mykey
        ssh_pub_key: "{{ lookup('file', '~/.ssh/id_ed25519.pub') }}"
        state: present
      register: ssh_key

    - name: Create server
      community.digitalocean.digital_ocean_droplet:
        state: present
        name: k3s-server
        oauth_token: "{{ oauth_token }}"
        size: 2gb
        region: fra1
        image: ubuntu-20-04-x64
        wait_timeout: 500
        ssh_keys:
          - "{{ ssh_key.data.ssh_key.fingerprint }}"
        tags:
          - "server"
          - "k3sup"
      register: k3s_server

    - name: Create agents
      community.digitalocean.digital_ocean_droplet:
        state: present
        name: "{{ item }}"
        oauth_token: "{{ oauth_token }}"
        size: 2gb
        region: fra1
        image: ubuntu-20-04-x64
        wait_timeout: 500
        ssh_keys:
          - "{{ ssh_key.data.ssh_key.fingerprint }}"
        tags:
          - "agent"
          - "k3sup"
      register: k3s_agent
      with_items:
        - k3s-agent1
        - k3s-agent2

    - name: Install k3s server on k3s-server
      vandot.k3sup.k3sup:
        action: server
        ip: "{{ k3s_server.data.ip_address }}"
        ssh_key: "~/.ssh/id_ed25519"

    - name: Install k3s agent on k3s-agents
      vandot.k3sup.k3sup:
        action: agent
        ip: "{{ item.data.ip_address }}"
        server_ip: "{{ k3s_server.data.ip_address }}"
        ssh_key: "~/.ssh/id_ed25519"
      with_items:
        - "{{k3s_agent.results}}"