Deploy K8s Using Kubespray

Kubespray is a composition of Ansible playbooks, inventory, provisioning tools, and domain knowledge for generic OS/Kubernetes clusters configuration management tasks. (kubernetes.io)
I deployed kube cluster on my kvm. Using 4 servers which 2 servers as masters and 2 workers.

Clone Repo and Install Packages

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git clone https://github.com/kubernetes-sigs/kubespray  
cd kubespray/  
sudo apt-get install python3-netaddr python3-pip -y 
sudo pip3 install -r requirements.txt
sudo echo "net.ipv4.ip_forward=1" >> /etc/sysctl.conf  

Setup Inventory file

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cp -rfp inventory/sample inventory/cluster01  
vi inventory/cluster01/inventory.ini 

[all]
al-master1 ansible_host=10.80.80.41
al-master2 ansible_host=10.80.80.42
al-worker1 ansible_host=10.80.80.43
al-worker2 ansible_host=10.80.80.44

[kube-master]
al-master[1:2]

[etcd]
al-master[1:2]
al-worker1

[kube-node]
al-worker[1:2]

[k8s-cluster:children]
kube-master
kube-node

ansible -m ping -i inventory/cluster01/inventory.ini --become --become-user=root all

Setup Group Vars

vi inventory/cluster01/group_vars/all/all.yml

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---
etcd_data_dir: /var/lib/etcd
etcd_kubeadm_enabled: false
bin_dir: /usr/local/bin
loadbalancer_apiserver_localhost: true
loadbalancer_apiserver_type: haproxy  # valid values "nginx" or "haproxy"
loadbalancer_apiserver_port: 6443
loadbalancer_apiserver_healthcheck_port: 8081
no_proxy_exclude_workers: false

Setup Network plugin in k8s-cluster.yaml

vi inventory/cluster01/group_vars/k8s_cluster/k8s-cluster.yml

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...
kube_network_plugin: flannel
...

Deploy Kubernetes Cluster

ansible-playbook -i inventory/cluster01/inventory.ini --become --become-user=root cluster.yml

Verify Deployment

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kubectl get nodes  
kubectl get pods --all-namespaces

Verify Deployment

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kubectl create deployment supermario-web --image=pengbai/docker-supermario --port=8080  
kubectl expose deployment supermario-web --type=NodePort --name=supermario-web  
kubectl get svc  

Check on your browser

http://{master-ip}:{NodePort}