[Base64 (Encode & Decode)]
$ echo -n 'KubernetesRocks!' | base64
S3ViZXJuZXRlc1JvY2tzIQ==

[Secrets]
$ kubectl create secret generic mariadb-user-creds --from-literal=MYSQL_USER=kubeuser --from-literal=MYSQL_PASSWORD=kube-still-rocks

[Cat]
$ cat max_allowed_packet.cnf
[mysqld]
max_allowed_packet = 64M

[ConfigMaps]
$ kubectl create configmap mariadb-config --from-file=max_allowed_packet.cnf
