Ansible.K3sCluster/playbook.yml

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- name: Provision VM's
hosts: localhost
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gather_facts: false
vars_files:
- hypervisor.vcenter.yml
- cluster.k3s.yml
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tasks:
- name: Download OVF-template
ansible.builtin.get_url:
url: "https://{{ repo_username }}:{{ repo_password }}@{{ image.ova_url }}"
dest: /scratch/image.ova
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- name: Deploy VM's from OVF-template
community.vmware.vmware_deploy_ovf:
hostname: "{{ hv.hostname }}"
username: "{{ hv.username }}"
password: "{{ hv_password }}"
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validate_certs: no
datacenter: "{{ hv.datacenter }}"
folder: "{{ hv.folder }}"
cluster: "{{ hv.cluster }}"
name: "{{ cluster.name | upper }}-{{ (item.ip | checksum)[-5:] | upper }}"
datastore: "{{ hv.datastore }}"
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disk_provisioning: thin
networks:
"LAN": "{{ hv.network }}"
power_on: yes
ovf: /scratch/image.ova
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deployment_option: "{{ image.deployment_option }}"
properties:
guestinfo.hostname: "{{ cluster.name | upper }}-{{ (item.ip | checksum)[-5:] | upper }}"
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guestinfo.rootpw: "{{ root_password }}"
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guestinfo.rootsshkey: "{{ public_key }}"
guestinfo.ntpserver: "{{ network.ntpserver }}"
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guestinfo.ipaddress: "{{ item.ip | ansible.utils.ipaddr('address') }}"
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guestinfo.prefixlength: "{{ item.ip | ansible.utils.ipaddr('prefix') }}"
guestinfo.dnsserver: "{{ network.dnsserver }}"
guestinfo.gateway: "{{ network.gateway }}"
delegate_to: localhost
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with_items: "{{ servers }}"
register: job_init
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async: 300
poll: 0
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- name: Pause to allow initial calls to complete
ansible.builtin.pause:
seconds: 10
- name: Poll for completion
ansible.builtin.async_status:
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jid: "{{ item.ansible_job_id }}"
with_items: "{{ job_init.results }}"
register: job_poll
retries: 5
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delay: 100
until: job_poll.finished
- name: Parse results into dictionary
ansible.builtin.set_fact:
nodes: "{{ nodes | default([]) + [ {'name': item.instance.hw_name, 'ip': item.item.item.ip | ansible.utils.ipaddr('address')} ] }}"
with_items: "{{ job_poll | json_query('results[*]') }}"
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# Purely to avoid large amount of spam; no sensitive data here.
no_log: true
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- name: Register new VM's in inventory
ansible.builtin.add_host:
name: "{{ item.name }}"
ansible_host: "{{ item.ip }}"
groups: k3s_ha
with_items: "{{ nodes }}"
- name: Wait for systems to become reachable over SSH
ansible.builtin.wait_for:
host: "{{ item.ip }}"
port: 22
timeout: 300
with_items: "{{ nodes }}"
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- name: Scan public keys
ansible.builtin.shell:
cmd: "ssh-keyscan -t rsa {{ item.ip }}"
register: publickeys
with_items: "{{ nodes }}"
- name: Store public keys
ansible.builtin.known_hosts:
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name: "{{ item.item.name | lower }}"
key: "{{ item.item.name | lower }},{{ item.stdout }}"
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state: present
path: ~/.ssh/known_hosts
with_items: "{{ publickeys.results }}"
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# Purely to avoid large amount of spam; no sensitive data here.
no_log: true
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- name: Provision Kubernetes
hosts: k3s_ha
gather_facts: false
vars_files:
- cluster.k3s.yml
tasks:
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- name: Install K3s binary (initial node)
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ansible.builtin.shell:
cmd: "curl -sfL https://get.k3s.io | sh -s - server --cluster-init --disable local-storage,traefik --tls-san {{ cluster.virtualip | ansible.utils.ipaddr('address') }}"
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when: inventory_hostname == k3s_ha[0]
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- name: Retrieve token (from initial node)
ansible.builtin.slurp:
src: /var/lib/rancher/k3s/server/token
register: k3s_token
run_once: true
delegate_to: k3s_ha[0]
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- name: Install K3s binary (additional nodes)
ansible.builtin.shell:
cmd: "curl -sfL https://get.k3s.io | sh -s - server --cluster-init --disable local-storage,traefik --tls-san {{ cluster.virtualip | ansible.utils.ipaddr('address') }}"
environment:
K3S_TOKEN: "{{ k3s_token.content | b64decode | trim }}"
K3S_URL: "{{ 'https://' + ( cluster.virtualip | ansible.utils.ipaddr('address') ) + ':6443' }}"
when: inventory_hostname != k3s_ha[0]