robedevops.ansible_k8s_nodes

This Role installs and configures all the packages and files required by a node in order to be part of the cluster:

• Set setenforce to zero
• Disable SELINUX
• Ensure modprobe br_netfilter
• Enable iptables forward
• Add kubernetes repositories
• Install the packages: kubelet, kubeadm, kubectl

Requirements

Python is required in order to use ansible module yum

Role Variables

N/A (working on multiple platforms and then define the variables)

Dependencies

There is not dependency with other roles by I recommend to use robedevops.ansible_docker and robedevops.ansible_docker_user with this role. (I always used in that way but that is not required)

Example Inventory

master ansible_host=host_ip_address
worker1 ansible_host=hos_ip_address
worker2 ansible_host=host_ip_address

[k8s-nodes]
master
worker1
worker2

[all:vars]
ansible_connection=ssh
ansible_user=centos
ansible_ssh_common_args='-o StrictHostKeyChecking=no'
ansible_ssh_private_key_file=/home/path/to/demo.pem

Example Playbook

Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:

- hosts: k8s-nodes
  gather_facts: yes
  become: yes
  roles:
    - { role: robedevops.ansible_docker, tags: ['docker'] }
    - { role: robedevops.ansible_docker_user, tags: ['docker-user'] }
    - { role: robedevops.ansible_k8s_nodes, tags: ['k8s-nodes'] }

License

BSD

Author Information

Roberto Cardenas Isla - email: rcardenas20@gmail.com