fabianotsi / k8s-vagrant-setup

K8S Study Environment

Requirements

1. Vagrant
2. Kubectl

Execute

Execute on the current folder:

vagrant up

After the process finish, a new file will be created on the local folder (kubernetes_config.conf). This file is the k8s config file.

Use the KUBECONFIG environment variable to use this k8s instance.

export KUBECONFIG="$(pwd)/kubernetes_config.conf"

To test:

$ kubectl get nodes
NAME         STATUS   ROLES                  AGE     VERSION
k8s-master   Ready    control-plane,master   8m9s    v1.22.2
node-1       Ready    <none>                 5m20s   v1.22.2
node-2       Ready    <none>                 2m2s    v1.22.2

Delete the env

vagrant destroy

Use suspend/resume to pause de execution

vagrant suspend
vagrant resume

Enable MetalLB

Based on MetalLB doc

Enable strictARP

kubectl get configmap kube-proxy -n kube-system -o yaml | \
sed -e "s/strictARP: false/strictARP: true/" | \
kubectl apply -f - -n kube-system

Install MetalLB

 kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.10.2/manifests/namespace.yaml
 kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.10.2/manifests/metallb.yaml

Configure MetalLB

1. Create a YAML file (metallb-conf.yaml)

apiVersion: v1
kind: ConfigMap
metadata:
  namespace: metallb-system
  name: config
data:
  config: |
    address-pools:
    - name: default
      protocol: layer2
      addresses:
      - 192.168.165.100-192.168.165.250

2. Apply the config file

kubectl apply -f  metallb-conf.yaml