initial checkin

README.md

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+# Ansible Role: k3s
+
+## Introduction
+
+This role will install a k3s cluster to three or more target hosts.
+
+This role requires at least three target hosts, previously deployed. Each
+host should have at least 4GB of RAM and at least a 20GB disk.
+
+It is also assumed that the user running the playbook has SSH key access
+set up for the root user on the target hosts.
+
+
+This playbook can be run using the following command line;
+
+ansible-playbook -i <inventory file> -e "username=<username>" k3s.yml
+
+ie,
+ansible-playbook -i cluster_inventory.yml -e "username=joe" k3s.yml
+

tasks/main.yml

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+---
+# tasks file for main.yml
+
+###########################################################
+- name: Check to make sure we have at least {{ minhosts }} target hosts (if cluster)
+  fail:
+    msg: "You need to have at least {{ minhosts }} target hosts for a cluster!"
+  when: (do_cluster == true) and (minhosts > numhosts)
+
+###########################################################
+- name: Install k3s server on master
+  shell:
+    cmd: curl -sfL https://get.k3s.io | sh -
+  when: "'master' in group_names"
+
+###########################################################
+- name: create /home/{{ username }}/.kube
+  file:
+    path: "/home/{{ username }}/.kube"
+    state: directory
+    owner: "{{ username }}"
+    group: "{{ username }}"
+    mode: "0755"
+  when: (username != "root") and ('master' in group_names)
+
+###########################################################
+- name: Copy kubernetes admin conf to user .kube directory
+  copy:
+    remote_src: true
+    src: "/etc/rancher/k3s/k3s.yaml"
+    dest: "/home/{{ username }}/.kube/config"
+    owner: "{{ username }}"
+    group: "{{ username }}"
+    mode: "0600"
+  when: (username != "root") and ('master' in group_names)
+
+###########################################################
+- name: Add "KUBECONFIG" environment variables to .bashrc
+  blockinfile:
+    path: "/home/{{ username }}/.bashrc"
+    block: |
+      export KUBECONFIG=${HOME}/.kube/config
+  when: (username != "root") and ('master' in group_names)
+
+###########################################################
+- name: Retrieve nodetoken from master node
+  shell:
+    cmd: cat /var/lib/rancher/k3s/server/node-token
+  register: nodetoken
+  delegate_to: "{{ hostvars[groups['master'][0]].inventory_hostname }}"
+  when: do_cluster == true
+
+###########################################################
+- name: Run agent command on worker nodes
+  shell:
+    cmd: curl -sfL https://get.k3s.io | K3S_URL=https://{{ hostvars[groups['master'][0]].ansible_host }}:6443 K3S_TOKEN={{ nodetoken.stdout }} sh -
+  when: (do_cluster == true) and ('workers' in group_names)
+
+# EOF