Rancher_prereq_setup.yml

---
- name: satisfy Rancher prereq for K8s cluster install
  # per https://computingforgeeks.com/install-kubernetes-production-cluster-using-rancher-rke/
  hosts: ubuntu-rke
  tasks:
    - include_vars: external_vars.yml    # where "rke_user: ubuntu"

# ======= How to run w non-root Ansible user: 
# [boburciu@r220 Rancher_K8s_prereq]$ cd /home/boburciu/Rancher_K8s_prereq
# [boburciu@r220 Rancher_K8s_prereq]$ ansible-playbook Rancher_prereq_setup.yml -v --become --ask-become-pass 

# following https://computingforgeeks.com/install-kubernetes-production-cluster-using-rancher-rke/
- name: 1st, create the passwordless user ubuntu to target host Ubuntu KVM
  import_playbook: create_passwordless_user.yml

- name: 2nd, download and enable docker
  import_playbook: setup_docker.yml

- name: 3rd, add the new user to docker group
  import_playbook: add_user_docker_group.yml

- name: 4th, disable swap memory 
  import_playbook: disable_swap.yml

- name: 5th, load RKE kernel modules
  import_playbook: add_kernel_modules.yml

- name: 6th, change sysctl bridging settings
  import_playbook: sysctl_settings.yml

- name: 7th, enable AllowTCPForwarding
  import_playbook: allow_tcp_fwd.yml

- name: 8th, enable DNS server for resolving Rancher Server URL
  import_playbook: set_dns_Rancher_server.yml