I have a simple setup of 2 containers, one for configuration and one for gateway.
Below is the definitions of service and deployments. They get created fine but the gateway container isn't able to connect to the http://configuration:8888 and throws unknown host error.
The configuration server is running Nginx on port 8888.
I am able to access the configuration from a browser with URL http://configuration/actuator/.
I thought the pods in Kubernetes should be able to communicate fine as long as they are in the same network (host here). Not sure what is missing here.
apiVersion: v1
items:
- apiVersion: v1
kind: Service
metadata:
name: configuration
spec:
ports:
- port: 8888
targetPort: 8888
selector:
app: configuration
status:
loadBalancer: {}
- apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: configuration
name: configuration
spec:
replicas: 1
selector:
matchLabels:
app: configuration
strategy:
type: Recreate
template:
metadata:
labels:
app: configuration
spec:
hostNetwork: true
containers:
- env:
- name: JVM_OPTS
value: -Xss512k -XX:MaxRAM=128m
image: <image>
name: configuration
resources: {}
volumeMounts:
- mountPath: /data
name: configuration-claim0
restartPolicy: Always
volumes:
- name: configuration-claim0
persistentVolumeClaim:
claimName: configuration-claim0
status: {}
- apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: gateway
name: gateway
spec:
replicas: 1
selector:
matchLabels:
app: gateway
strategy:
type: Recreate
template:
metadata:
labels:
app: gateway
spec:
hostNetwork: true
containers:
- env:
- name: JVM_OPTS
value: -Xss512k -XX:MaxRAM=128m
**- name: SPRING_CLOUD_CONFIG_URI
value: http://configuration:8888**
- name: SPRING_PROFILES_ACTIVE
value: container
image: <image>
name: gateway
