I'm following the spring and kubernetes integration tutorial:
https://spring.io/guides/gs/spring-boot-kubernetes/
In my current scenario, I have 1 master and 2 workers servers.
When I deploy the file below using the command kubectl apply -f deployment.yaml, I can make a request from within the master server using kubectl port-forward svc/demo 8080:8080 and curl localhost:8080/actuator/health.
What I want to do is an external request (a public computer - my computer) to access the service that I created (kubernetes_master_ip:8080/actuator), but when I try this, I get "connection refused".
What is missing?
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: demo
name: demo
spec:
replicas: 1
selector:
matchLabels:
app: demo
strategy: {}
template:
metadata:
creationTimestamp: null
labels:
app: demo
spec:
containers:
- image: springguides/demo
name: demo
resources: {}
status: {}
---
apiVersion: v1
kind: Service
metadata:
creationTimestamp: null
labels:
app: demo
name: demo
spec:
ports:
- name: 8080-8080
port: 8080
protocol: TCP
targetPort: 8080
selector:
app: demo
type: ClusterIP
status:
loadBalancer: {}You need to change the type of service to expose the application. There are two ways: - LoadBalancer type: (Only on cloud providers) - NodePort type: Can be done on-premise or minikube.
Change your service yaml to below:
apiVersion: v1
kind: Service
metadata:
labels:
app: demo
name: demo
spec:
ports:
- name: 8080-8080
port: 8080
nodePort: 31234
protocol: TCP
targetPort: 8080
selector:
app: demo
type: NodePortOnce the service is executed. check the application Node IP on which container is created.
kubectl get pods -o widethen try to access the application at: http://node_ip:31234/actuator
you can change your service type to load balancer. Which will expose your service via IP address to the external internet. Service type load balancer will only work with Cloud providers.
For more details you can visit : https://kubernetes.io/docs/concepts/services-networking/
apiVersion: v1
kind: Service
metadata:
creationTimestamp: null
labels:
app: demo
name: demo
spec:
ports:
- name: 8080-8080
port: 8080
protocol: TCP
targetPort: 8080
selector:
app: demo
type: LoadBalancersave as yaml and execute it. it will provide the IP address.
You can access service via IP
Kubectl get svc