I have setup hashicorp vault server in kubernetes. Vault server works fine when accessed through CLI or UI. I created another pod which runs my application. But I cannot access Vault Server from my application which is running on different pod.

I have tried using Cluster-IP:Port, IP:Port but always see error Connection Refused.

service.yaml

apiVersion: v1
kind: Service
metadata:
  name: vault
  labels:
    run: vault
spec:
  type: ClusterIP
  ports:
    - port: 8080
      targetPort: 8200
      protocol: TCP
      name: vault
  selector:
    run: vault

deployment.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: vault
  labels:
    run: vault
spec:
  replicas: 1
  template:
    metadata:
      labels:
        run: vault
    spec:
      containers:
      - name: vault
        command: ["vault", "server", "-config", "/vault/config/vault.hcl"]
        image: "vault"
        imagePullPolicy: IfNotPresent
        securityContext:
          capabilities:
            add:
              - IPC_LOCK
        volumeMounts:
          - name: configurations
            mountPath: /vault/config/vault.hcl
            subPath: vault.hcl  
      volumes:
        - name: configurations
          configMap:
            name: vault

I need to access vault server from an application running in different pod within same cluster.