问题
I am new to Kops and a bit to kubernetes as well. I managed to create a cluster with Kops, and run a deployment and a service on it. everything went well, and an ELB was created for me and I could access the application via this ELB endpoint.
My question is: How can I map my subdomain (eg. my-sub.example.com) to the generated ELB endpoint ? I believe this should be somehow done automatic by kubernetes and I should not hardcode the ELB endpoint inside my code. I tried something that has to do with annotation -> DomainName, but it did not work.(see kubernetes yml file below)
apiVersion: v1
kind: Service
metadata:
name: django-app-service
labels:
role: web
dns: route53
annotations:
domainName: "my.personal-site.de"
spec:
type: LoadBalancer
selector:
app: django-app
ports:
- protocol: TCP
port: 80
targetPort: 8000
----
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: django-app-deployment
spec:
replicas: 2
minReadySeconds: 15
strategy:
type: RollingUpdate
rollingUpdate:
maxSurge: 1
maxUnavailable: 1
template:
metadata:
labels:
app: django-app
spec:
containers:
- image: fettah/djano_kubernetes_medium:latest
name: django-app
imagePullPolicy: Always
ports:
- containerPort: 8000
回答1:
When you have ELBs in place you can use external-dns (https://github.com/kubernetes-incubator/external-dns) plugin which can attach DNS records to those ELBs using AWS Route53 integration. You need to add proper rights to Kubernetes so he can create DNS record in Route53 - you need to add additional policy in kops (according guide in external-dns plugin) in additionalPolicies section in kops cluster configuration. Then use annotation like:
external-dns.alpha.kubernetes.io/hostname: myservice.mydomain.com.
来源：https://stackoverflow.com/questions/52356819/kops-kubernetes-service-maped-to-dns-names-in-aws-route53