Cert-Manager and Ambassador Edge Stack renew certificate issue solution @ https://stackoverflow.com/questions/61563942/ambassador-edge-stack-host-not-generating-acme-certificate/62538808#62538808

README.md

1. Install cert Manager :- kubectl apply -f https://github.com/jetstack/cert-manager/releases/latest/download/cert-manager.crds.yaml.

2. create ClusterIssuer on same namespace where you want to deploy Host + Mapping for domains.

    ---
    apiVersion: cert-manager.io/v1alpha2
    kind: ClusterIssuer
    metadata:
      name: letsencrypt-prod
    spec:
      acme:
        email: anish.mourya5@gmail.com
        server: https://acme-v02.api.letsencrypt.org/directory
        privateKeySecretRef:
          name: letsencrypt-prod
        solvers:
        - http01:
            ingress:
              class: nginx
          selector: {}
   

3. Apply for Certificate :-

            ---
            apiVersion: cert-manager.io/v1alpha2
            kind: Certificate
            metadata:
              name: gist.github.com
              namespace: development
            spec:
              secretName: gist.github.com
              issuerRef:
                name: letsencrypt-prod
                kind: ClusterIssuer
              dnsNames:
              - gist.github.com
   

4. Create a Mapping for the /.well-known/acme-challenge/ route.

            ---
            apiVersion: getambassador.io/v2
            kind: Mapping
            metadata:
              name: acme-challenge-mapping
            spec:
              prefix: /.well-known/acme-challenge/
              rewrite: ""
              service: acme-challenge-service
            ---
            apiVersion: v1
            kind: Service
            metadata:
              name: acme-challenge-service
            spec:
              ports:
              - port: 80
                targetPort: 8089
              selector:
                acme.cert-manager.io/http01-solver: "true"
   

5. Create Host and Mapping :-

            apiVersion: getambassador.io/v2
            kind: Host
            metadata:
              name: gist.github.com
              namespace: development
            spec:
              acmeProvider:
                authority: 'https://acme-v02.api.letsencrypt.org/directory'
                email: anish.mourya5@gmail.com
              ambassadorId:
                - default
              hostname: gist.github.com
              selector:
                matchLabels:
                  hostname: gist.github.com
              tlsSecret:
                name: gist.github.com
   
            ---
            kind: Mapping
            metadata:
              name: gist.github.com-dev-mapping
              namespace: development
            spec:
              host: gist.github.com
              prefix: /
              service: 'gist-dev:5000'
              timeout_ms: 60000
            apiVersion: getambassador.io/v2
   

HI,
while referring this the final stage (kind: mapping) create host and mapping, how do you specif the service name as "gist-dev:5000" we didn't created any service on that name, so I got an error for this, how its working for you?
Thanks