Using MySQL and MariaDB SQL databases

MySQL is a relational database that uses the SQL language to read and write information. It’s one of the most used databases on the internet. MariaDB is a fork of MySQL and the version used in this example is fully compatible with MySQL. It’s a very fast SQL database and it’s simple to use. After this brief introduction to MySQL, let’s get started deploying this database by following the next steps:

1. Create the MySQL deployment creating a PersistentVolumeClaim called db-pv-claim:

   $ cat <<EOF | kubectl apply -f -
   apiVersion: apps/v1
   kind: Deployment
   metadata:
     name: mysql
   spec:
     selector:
       matchLabels:
         app: mysql
     strategy:
       type: Recreate
     template:
       metadata:
         labels:
           app: mysql...