K8s/Ingress: Difference between revisions

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kind: Ingress
kind: Ingress
metadata:
metadata:
   name: pgadmin
   name: gitlab
   namespace: internal
   namespace: internal
   labels:
   labels:
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   ingressClassName: nginx
   ingressClassName: nginx
   rules:
   rules:
     - host: "pgadmin.host.k8s.local"
     - host: "gitlab.host.k8s.local"
       http:
       http:
         paths:
         paths:
           - path: /pgadmin4
           - path: /
             pathType: ImplementationSpecific
             pathType: ImplementationSpecific
             backend:
             backend:
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                 name: minikube-host
                 name: minikube-host
                 port:
                 port:
                   number: 2013
                   number: 1080
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<syntaxhighlight lang="yaml">
<syntaxhighlight lang="yaml" highlight="8,9,19,20" line>
cat << YML | kubectl apply -n internal -f -
cat << YML | kubectl apply -n internal -f -
---
---
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kind: Ingress
kind: Ingress
metadata:
metadata:
   name: gitlab
   name: pgadmin
   namespace: internal
   namespace: internal
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /pgadmin4
   labels:
   labels:
    app.kubernetes.io/version: 1.0.0
    app.kubernetes.io/managed-by: kubectl
     app.kubernetes.io/name: minikube-host
     app.kubernetes.io/name: minikube-host
     app.kubernetes.io/instance: minikube-host
     app.kubernetes.io/instance: minikube-host
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   ingressClassName: nginx
   ingressClassName: nginx
   rules:
   rules:
     - host: "gitlab.host.k8s.local"
     - host: "pgadmin.host.k8s.local"
       http:
       http:
         paths:
         paths:
           - path: /
           - path: /
             pathType: ImplementationSpecific
             pathType: Prefix
             backend:
             backend:
               service:
               service:
                 name: minikube-host
                 name: minikube-host
                 port:
                 port:
                   number: 1080
                   number: 2013
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|-
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<syntaxhighlight lang="yaml">
<syntaxhighlight lang="yaml" highlight="14,18,28" line>
cat << YML | kubectl apply -n internal -f -
cat << YML | kubectl apply -n internal -f -
---
---
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     app.kubernetes.io/name: minikube-host
     app.kubernetes.io/name: minikube-host
     app.kubernetes.io/instance: minikube-host
     app.kubernetes.io/instance: minikube-host
  annotations:
    nginx.ingress.kubernetes.io/proxy-body-size: '0'
spec:
spec:
   ingressClassName: nginx
   ingressClassName: nginx
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                 port:
                 port:
                   number: 9801
                   number: 9801
           - path: /files/
    - host: "s3.host.k8s.local"
      http:
        paths:
           - path: /
             pathType: ImplementationSpecific
             pathType: ImplementationSpecific
             backend:
             backend:
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* [https://docs.k0sproject.io/v1.27.1+k0s.0/examples/metallb-loadbalancer/ K8s » Ingress » MetalLB]
* [https://docs.k0sproject.io/v1.27.1+k0s.0/examples/metallb-loadbalancer/ K8s » Ingress » MetalLB]
* [https://docs.k0sproject.io/v1.27.1+k0s.0/examples/traefik-ingress/ K8s » Ingress » Traefik]
* [https://docs.k0sproject.io/v1.27.1+k0s.0/examples/traefik-ingress/ K8s » Ingress » Traefik]
* [[K8s/Swiss Knife|K8s » Swiss Knife]]
* [[K8s/Service|K8s » Service]]
* [[K8s/Run|K8s » Run]]


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* [[K8s/CSI Hostpath Driver|K8s » CSI Hostpath Driver]]


|-
|-
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* [[Minikube Systemd|Minikube » Systemd]]
* [[Minikube Systemd|Minikube » Systemd]]
* [[Minikube Registry|Minikube » Registry]]
* [[Minikube Registry|Minikube » Registry]]
* [[Minikube Tunnel|Minikube » Tunnel]]
* [[Kubectl]]
* [[Kubectl]]
* [[Ansible]]
* [[Ansible]]

Latest revision as of 10:02, 7 September 2024

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: gitlab
  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: "gitlab.host.k8s.local"
      http:
        paths:
          - path: /
            pathType: ImplementationSpecific
            backend:
              service:
                name: minikube-host
                port:
                  number: 1080
YML

cat << YML | kubectl apply -n internal -f -
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: pgadmin
  namespace: internal
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /pgadmin4
  labels:
    app.kubernetes.io/name: minikube-host
    app.kubernetes.io/instance: minikube-host
spec:
  ingressClassName: nginx
  rules:
    - host: "pgadmin.host.k8s.local"
      http:
        paths:
          - path: /
            pathType: Prefix
            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
  annotations:
    nginx.ingress.kubernetes.io/proxy-body-size: '0'
spec:
  ingressClassName: nginx
  rules:
    - host: "minio.host.k8s.local"
      http:
        paths:
          - path: /
            pathType: ImplementationSpecific
            backend:
              service:
                name: minikube-host
                port:
                  number: 9801
    - host: "s3.host.k8s.local"
      http:
        paths:
          - path: /
            pathType: ImplementationSpecific
            backend:
              service:
                name: minikube-host
                port:
                  number: 9800
YML

Ingress » Nginx

ConfigMap » tcp-services

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: "postgresql/postgresql:5432"
  6379: "redis/redis-headless:6379"
YML

ConfigMap » udp-services

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"
  53: "kube-system/kube-dns:53"
YML

Service » ingress-nginx

cat << YML | kubectl apply -n ingress-nginx -f -
---
apiVersion: v1
kind: Service
metadata:
  name: ingress-nginx
  namespace: ingress-nginx
  labels:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx
spec:
  type: LoadBalancer
  ports:
    - name: http
      port: 80
      targetPort: 80
      protocol: TCP
    - name: https
      port: 443
      targetPort: 443
      protocol: TCP
    - name: proxied-tcp-5432
      port: 5432
      targetPort: 5432
      protocol: TCP
    - name: proxied-tcp-6379
      port: 6379
      targetPort: 6379
      protocol: TCP
    - name: proxied-udp-1194
      port: 1194
      targetPort: 1194
      protocol: UDP
    - name: proxied-udp-53
      port: 53
      targetPort: 53
      protocol: UDP
  selector:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx
YML

kubectl -n ingress-nginx rollout restart deploy/ingress-nginx-controller
kubectl -n ingress-nginx rollout history deploy/ingress-nginx-controller
kubectl -n ingress-nginx rollout status  deploy/ingress-nginx-controller

Minikube » Tunnel

# check minikube user either exists or not
cat /etc/passwd|grep minikube
sudo usermod -aG sudo minikube

# minikube no-password sudo access add to EOL
sudo visudo
minikube ALL=(ALL) NOPASSWD: ALL

# login to minikube user and start tunneling
sudo -i -u minikube
minikube tunnel

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

sudo vim /etc/apache2/sites-enabled/000-default.conf
sudo vim /etc/apache2/ports.conf
sudo apachectl -t

sudo systemctl restart apache2.service
sudo systemctl reload apache2.service
systemctl status apache2.service

References

Retrieved from "https://cdn.chorke.org/weke/index.php?title=K8s/Ingress&oldid=12884"