Similar to previous examples in the Secrets subsection, we mount a volume with configmap syntax and add volumeMounts inside a container template. The command in centos will loop to cat ${MOUNTPOINT}/$CONFIG_FILENAME:

cat 3-2-3_pod_vol_configmap.yaml
apiVersion: v1
kind: Pod
metadata:
  name: configmap-vol
spec:
  containers:
    - name: configmap
      image: centos
      command: ["/bin/sh", "-c", "while : ;do cat /src/app/config/database.properties; sleep 10; done"]
      volumeMounts:
        - name: config-volume
          mountPath: /src/app/config
  volumes:
    - name: config-volume
      configMap:
        name: example

// create configmap
# kubectl create -f 3-2-3_pod_vol_configmap.yaml
pod "configmap-vol" created

// check out the logs
# kubectl logs -f configmap-vol
endpoint=k8s.us-east-1.rds.amazonaws.com
port=1521  

We then could use this method to inject our non-sensitive configuration into the pod.