K8s/Ingress

External

kubectl get ns|grep external
kubectl delete namespace external
kubectl create namespace external

Internal

kubectl get ns|grep internal kubectl delete namespace internal kubectl create namespace internal
cat << YML|kubectl apply -n internal -f - --- apiVersion: v1 kind: Service metadata: name: minikube-host namespace: internal labels: app.kubernetes.io/version: 1.0.0 app.kubernetes.io/managed-by: kubectl app.kubernetes.io/name: minikube-host app.kubernetes.io/instance: minikube-host spec: type: ExternalName externalName: host.minikube.internal YML
cat << YML | kubectl apply -n internal -f - --- apiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: apache namespace: internal labels: app.kubernetes.io/version: 1.0.0 app.kubernetes.io/managed-by: kubectl app.kubernetes.io/name: minikube-host app.kubernetes.io/instance: minikube-host spec: ingressClassName: nginx rules: - host: "host.k8s.local" http: paths: - path: / pathType: ImplementationSpecific backend: service: name: minikube-host port: number: 2013 YML	cat << YML | kubectl apply -n internal -f - --- apiVersion: networking.k8s.io/v1 kind: Ingress metadata: name: minio namespace: internal labels: app.kubernetes.io/version: 1.0.0 app.kubernetes.io/managed-by: kubectl app.kubernetes.io/name: minikube-host app.kubernetes.io/instance: minikube-host spec: ingressClassName: nginx rules: - host: "minio.host.k8s.local" http: paths: - path: / pathType: ImplementationSpecific backend: service: name: minikube-host port: number: 9801 - path: /files/ pathType: ImplementationSpecific backend: service: name: minikube-host port: number: 9800 YML

ConfigMap

ConfigMap » TCP

cat << YML | kubectl apply -n ingress-nginx -f -
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: tcp-services
  namespace: ingress-nginx
  labels:
    app.kubernetes.io/component: controller
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/name: ingress-nginx
data:
  "5432": "internal/minikube-host:5432"
YML

ConfigMap » UDP

cat << YML | kubectl apply -n ingress-nginx -f -
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: udp-services
  namespace: ingress-nginx
  labels:
    app.kubernetes.io/component: controller
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/name: ingress-nginx
data:
  "1194": "internal/minikube-host:1194"
YML

Playground

kubectl -n ingress-nginx exec -it svc/ingress-nginx-controller -- cat template/nginx.tmpl kubectl -n ingress-nginx exec -it svc/ingress-nginx-controller -- cat /etc/resolv.conf kubectl -n ingress-nginx exec -it svc/ingress-nginx-controller -- cat nginx.conf kubectl -n ingress-nginx exec -it svc/ingress-nginx-controller -- cat /etc/hosts
kubectl -n external get endpoints kubectl -n external get service kubectl -n external get ingress	kubectl -n internal get endpoints kubectl -n internal get service kubectl -n internal get ingress	kubectl config get-contexts sudo -i -u minikube helm list -A
kubectl get all -A kubectl get ns	kubectl -n ingress-nginx exec -it svc/ingress-nginx-controller -c controller -- bash kubectl -n ingress-nginx exec -it svc/ingress-nginx-controller -- bash

References

K8s » Ingress » Connect to external service K8s » Ingress » Exposing TCP/UDP services K8s » Ingress » Exposing FastCGI Servers K8s » Ingress » Different namespaces K8s » Ingress » Custom Template K8s » Ingress » External Service K8s » Ingress » Path Matching K8s » Ingress » Annotations K8s » Ingress » ConfigMaps K8s » Ingress	K8s » Ingress » Expose TCP services
Linux Containers Kubernetes Multipass Minikube Podman Vagrant Docker Qemu K9s K8s	Minikube » Ingress » DNS Minikube » Systemd Minikube » Registry Kubectl Ansible CIDR Helm UFW