...
In the "parametrization" paragraph of the Storage chapter, countless customization possibilities are listed, surmounted, however, by a warning: not all the parameters presented are supported by the various plugins. The limitations in the implementations presented here are multiple:
...
These limitations are the result of poor integration between the parties, due to the lack of a real Storage provider. Here, in practice, the cluster was scraping data directly from the machines hard drive. In the next sub-chapter we will put into practice a procedure that will allow us to get around the problem, without the need to pay a Storage provider (AWSElasticBlockStore, AzureFile, GCEPersistentDisk, ecc.). We will introduce a layer (next sub-chapter), between the VM hard drive and Kubernetes, which will act as a mediator. In this way we will be able to access a wider range of parameters, able to better meet our storage needs, but still using the volume of the VMs.