Ingress setup for Devtron Installation

After Devtron is installed, Devtron is accessible through service devtron-service. If you want to access devtron through ingress, edit devtron-service and change the loadbalancer to ClusterIP. You can do this using kubectl patch command like :

kubectl patch -n devtroncd svc devtron-service -p '{"spec": {"ports": [{"port": 80,"targetPort": "devtron","protocol": "TCP","name": "devtron"}],"type": "ClusterIP","selector": {"app": "devtron"}}}'

After that create ingress by applying the ingress yaml file. You can use this yaml file to create ingress to access devtron:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  labels:
    app: devtron
    release: devtron
  name: devtron-ingress
  namespace: devtroncd
spec:
  ingressClassName: nginx
  rules:
  - http:
      paths:
      - backend:
          service:
            name: devtron-service
            port:
              number: 80
        path: /orchestrator
        pathType: ImplementationSpecific 
      - backend:
          service:
            name: devtron-service
            port:
              number: 80
        path: /dashboard
        pathType: ImplementationSpecific
      - backend:
          service:
            name: devtron-service
            port:
              number: 80
        path: /grafana
        pathType: ImplementationSpecific  

You can access devtron from any host after applying this yaml. For k8s versions <1.19, apply this yaml:

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  labels:
    app: devtron
    release: devtron
  name: devtron-ingress
  namespace: devtroncd
spec:
  rules:
  - http:
      paths:
      - backend:
          serviceName: devtron-service
          servicePort: 80
        path: /orchestrator
      - backend:
          serviceName: devtron-service
          servicePort: 80
        path: /dashboard
        pathType: ImplementationSpecific  

Optionally you also can access devtron through a specific host like :

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  labels:
    app: devtron
    release: devtron
  name: devtron-ingress
  namespace: devtroncd
spec:
  ingressClassName: nginx
  rules:
  - http:
      paths:
      - backend:
          service:
            name: devtron-service
            port:
              number: 80
        host: devtron.example.com
        path: /orchestrator
        pathType: ImplementationSpecific 
      - backend:
          service:
            name: devtron-service
            port:
              number: 80
       host: devtron.example.com
        path: /dashboard
        pathType: ImplementationSpecific
      - backend:
          service:
            name: devtron-service
            port:
              number: 80
        path: /grafana
        pathType: ImplementationSpecific  

Enable HTTPS For Devtron

Once ingress setup for devtron is done and you want to run Devtron over https, you need to add different annotations for different ingress controllers and load balancers.

1. Nginx Ingress Controller

In case of nginx ingress controller, add following annotations under service.annotations under nginx ingress controller to run devtron over https.

(i) Amazon Web Services (AWS)

If you are using AWS cloud, add the following annotations under service.annotations under nginx ingress controller.

  annotations:
    service.beta.kubernetes.io/aws-load-balancer-backend-protocol: "http"
    service.beta.kubernetes.io/aws-load-balancer-ssl-ports: "443"
    nginx.ingress.kubernetes.io/force-ssl-redirect: "true"
    service.beta.kubernetes.io/aws-load-balancer-ssl-cert: "<acm-arn-here>"

(ii) Digital Ocean

If you are using Digital Ocean cloud, add the following annotations under service.annotations under nginx ingress controller.

annotations:
  service.beta.kubernetes.io/do-loadbalancer-protocol: "http"
  service.beta.kubernetes.io/do-loadbalancer-tls-ports: "443"
  service.beta.kubernetes.io/do-loadbalancer-certificate-id: "<your-certificate-id>"
  service.beta.kubernetes.io/do-loadbalancer-redirect-http-to-https: "true"

2. AWS Application Load Balancer (AWS ALB)

In case of AWS application load balancer, add following annotations under ingress.annotations to run devtron over https.

  annotations:
    kubernetes.io/ingress.class: alb
    alb.ingress.kubernetes.io/listen-ports: '[{"HTTP": 80}, {"HTTPS": 443}]'
    alb.ingress.kubernetes.io/certificate-arn: "<acm-arn-here>"

3. Azure Application Gateway

In case of AWS application load balancer, the following annotations need to be added under ingress.annotations to run devtron over https.

 annotations:
  kubernetes.io/ingress.class: "azure/application-gateway"
  appgw.ingress.kubernetes.io/backend-protocol: "http"
  appgw.ingress.kubernetes.io/ssl-redirect: "true"
  appgw.ingress.kubernetes.io/appgw-ssl-certificate: "<name-of-appgw-installed-certificate>"

For an Ingress resource to be observed by AGIC (Application Gateway Ingress Controller) must be annotated with kubernetes.io/ingress.class: azure/application-gateway. Only then AGIC will work with the Ingress resource in question.

Note: Make sure NOT to use port 80 with HTTPS and port 443 with HTTP on the Pods.