DevOps with Kubernetes - Second Edition

Using ConfigMap via volume

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.yamlapiVersion: v1kind: Podmetadata:  name: configmap-volspec:  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.yamlpod "configmap-vol" created
// check out the logs# kubectl logs -f configmap-volendpoint=k8s.us-east-1.rds.amazonaws.com ...