K3s cluster with primary and secondary NGINX or Istio ingress

• installation: https://fabianlee.org/2021/09/12/kubernetes-k3s-cluster-on-ubuntu-using-ansible/
• NGINX: https://fabianlee.org/2021/09/16/kubernetes-k3s-with-multiple-istio-ingress-gateways/
• Istio: https://fabianlee.org/2021/09/16/kubernetes-k3s-with-multiple-istio-ingress-gateways/

K3s Cluster Installation

Modify variables for environment

• vi group_vars/all

Prereq for scripts

• ansible-playbook install_dependencies.yml

Create guest OS with KVM

• ansible-playbook playbook_terraform.yml

Install k3s:

• sudo ls /tmp
• ansible-playbook playbook_k3s_prereq.yml
• ansible-playbook playbook_k3s.yml

Install MetalLB and certificates

• ansible-playbook playbook_metallb.yml
• ansible-playbook playbook_certs.yml

Choose between NGINX Ingress

• ansible-playbook playbook_nginx.yml
• ansible-playbook playbook_nginx_test.yml

OR Istio Ingress

• ansible-playbook playbook_istio.yml
• ansible-playbook playbook_istio_test.yml

Validate Cluster

Validate kubectl locally:

• export KUBECONFIG=/tmp/k3s-kubeconfig
• kubectl get services -A

Validate ingress locally:

• add entries to local /etc/hosts 192.168.2.143 k3s.local 192.168.2.144 k3s-secondary.local

• test nginx ingress ./test-nginx-endpoints.sh OR

• test istio ingress ./test-istio-endpoints.sh