Setup cluster kubernetes 3 node with kubeadm using ansible

Environment

hostname	ip	os	nginx version	virtualization	note
ops-master	10.10.10.60	20.04.6 LTS (Focal Fossa)	nginx version: nginx/1.18.0 (Ubuntu)	kvm	Loadbalancer & client servers
ops-worker-1	10.10.10.61	20.04.6 LTS (Focal Fossa)	nginx version: nginx/1.18.0 (Ubuntu)	kvm	client servers
ops-worker-2	10.10.10.62	20.04.6 LTS (Focal Fossa)	nginx version: nginx/1.18.0 (Ubuntu)	kvm	client servers

Setup ssh for all node for ssh passwordless to user

execute from master-1

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ssh-keygen -t rsa

copy /.ssh/id.rsa.pub to all node

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cat ~/.ssh/id_rsa.pub

insert id_rsa.pub master to all worker node

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nano ~/.ssh/authorized_keys

after insert idrsa.pub , test ssh to all worker node to user root , make sure the ssh passwordless

Install ansible on master node

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sudo apt install software-properties-common -y

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sudo add-apt-repository --yes --update ppa:ansible/ansible

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sudo apt install ansible -y

makesure ansible has been installed

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ansible --version