docs: traefik and ingress-nginx lb of k8s

Author: revant

docs/kubernetes-loadbalancer.md

@@ -0,0 +1,36 @@
+# Create Traefik LoadBalancer Service
+
+```shell
+helm repo add traefik https://traefik.github.io/charts
+helm repo update
+helm install --namespace traefik --create-namespace traefik traefik/traefik
+```
+
+For Internal LB add appropriate annotation as per your cloud provider. e.g. Digitalocean:
+
+```shell
+helm upgrade --install --namespace traefik --create-namespace --set service.annotations."service\.beta\.kubernetes\.io/do-loadbalancer-network"="INTERNAL" traefik traefik/traefik
+```
+
+# Create kubernetes/ingress-nginx LoadBalancer Service
+
+```shell
+helm upgrade --install ingress-nginx ingress-nginx \
+  --repo https://kubernetes.github.io/ingress-nginx \
+  --namespace ingress-nginx --create-namespace
+```
+
+For Internal LB add appropriate annotation as per your cloud provider. e.g. Digitalocean:
+
+```shell
+helm upgrade --install ingress-nginx ingress-nginx \
+  --repo https://kubernetes.github.io/ingress-nginx \
+  --namespace ingress-nginx --create-namespace \
+  --set service.annotations."service\.beta\.kubernetes\.io/do-loadbalancer-network"="INTERNAL"
+```
+
+Reference:
+
+- https://github.com/traefik/traefik-helm-chart/blob/master/traefik/values.yaml
+- https://kubernetes.github.io/ingress-nginx/deploy/#quick-start
+- https://docs.digitalocean.com/products/kubernetes/how-to/configure-load-balancers/#internal-load-balancer