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What is and how to use Red Hat OpenShift Container Storage 4

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1. How to Download OpenShift Container Storage Red Hat

The storage is an issue that in today 's world has taken very important because based on their abilities can have the availability of data . It is not a secret for any of us that today data moves in astonishing amounts of all kinds (voice, audio, images) and if the storage does not have enough capacity to host this data, we will be at a latent risk of losing it ..

 

With this in mind, Red Hat has developed Red Hat OpenShift Container Storage which is constituted as a storage defined by integrated software that has been optimized for Red Hat OpenShift Container Platform. In the following link you will find more information about it:

 

 

OpenShift Container Storage in version 4.2 is based on Red Hat Ceph® Storage, Rook and NooBaa which allow us to deliver container-focused native storage services that are compatible with block, file and object services. This results in a more comprehensive coverage of storage capacities.

 

Platforms
Version 4.2, OpenShift Container Storage can be used on platforms such as:
  • Amazon Web Services
  • VMware
  • GCP
  • IBM Z
  • Openstack
  • VSphere

 

Platform implementation
This platform can be used locally or in a public cloud with improvements such as:
  • Integrated Red Hat technology
  • Open source development model
  • Hybrid cloud deployments

 

Storage
OpenShift Container Storage works seamlessly when receiving popular or cloud native workloads like:
  • Object storage for archival, backup, or media storage purposes
  • Storage blocks focused on databases and messaging
  • Shared file storage for continuous integration and data addition purposes

 

Type of works
One of the main innovations of OpenShift 4.2, is that its internal structure has been redesigned with the aim of taking full advantage of Kubernetes operators (Kubernetes Operators) and these allow to exploit to the maximum the distribution of Kubernetes at enterprise level when carrying out work. how:
  • automation of workflows
  • implementation
  • start
  • setting
  • provisioning
  • scaled
  • upgrade
  • monitoring
  • resource management

 

In summary, this allows the user full control over the installation, update and administration of the storage in OpenShift..

 

To give us a bit of an understanding of operators, these are a simple way to package, deploy, and manage a native Kubernetes application. These applications are implemented in Kubernetes and their management is done through the Kubernetes APIs and the kubectl tools.

 

 

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Variables for themes
OpenShift Container Storage 4 has a clear vision so that the administrator can work without confusion on each process of the accommodation, regardless of their level of knowledge, since they offer viable solutions for topics such as:
  • Deploy storage services on your network
  • Expand storage capacities
  • Create an alert to users the moment a storage problem occurs
  • Integrate dashboards into the OpenShift Administrator Console where you can see the status of the utility and the level of storage.

 

OpenShift makes use of the Operator framework (Kubernete operator frameworks) which mostly automate the actions of native cloud storage for OpenShift. This gives a global and controlled focus on vital aspects such as scheduling, life cycle, resource management, analysis, monitoring and security of the data hosted in the container..

 

Implementation
OpenShift Container Storage can be implemented in different scenarios like:
  • File storage for CI / CD authoring environments
  • Test environments where complex databases, document stores and messaging systems work
  • Web application storage
  • Storage of objects in multiple clouds

 

We are going to know the process of installation and use of OpenShift Container Storage.

 

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1. How to Download OpenShift Container Storage Red Hat

 

Step 1

The first step will be to go to the official OpenShift Container Storage link and create our Red Hat account or log in:

 

 OpenShift Container Storage

 

There we must enter all the data that is requested:

 

image

 

Step 2

After this, the possibility of accessing learning scenarios is offered:

 

image

 

Step 3

With this it is possible to get a global idea of ​​how OpenShift Container Storage works.
To mount and manage it physically, we must install OpenShift 4 according to the instructions in the above mentioned link and firstly validate that the computer has the minimum requirements, in this case Windows 10, which are:
  • Have Hyper-V enabled
  • Windows 10 Falls Creator version or higher
  • Windows 10 Pro

 

For this we access the command prompt and go to the path where OpenShift 4 has been extracted and execute:

 crc setup 
image

 

Step 4

Next we create the cluster that is where OpenShift Container Storage 4 is configured with the following command:
 crc start 
image

 

Note
OpenShift Container Storage is part of OpenShift 4, so you should always have a cluster created for your use.

 

Step 5

Once this process is finished, we can check its status with:
 crc status 
image

 

Step 6

We must access the cluster by running:
 crc console 
image

 

Step 7

There we enter the user data and in the next window we will go to the "Storage" section where we will see the following:

 

image

 

There are three types of storage which are:

 

Persistent Volumes
This option gives us the opportunity to create a volume with a fixed size and they are resources in the cluster.

Persistent Volumes Claims
They fulfill the same function of the previous one but additional this current one as verification of claims of the resource

Storage Classes
Allows administrators to assign storage classes to use based on services, backup policies, or policies determined by cluster administrators.

 

Step 8

In this case we select Persistent Volumes and we will see the following. There we see the current volumes and OpenShift Container Storage allows us to create the volume by clicking on "Create Persistent Volume"

 

image

 

Step 9

In the console there are a series of predefined values ​​that are:

 

apiVersion
APIVersion is responsible for assigning the versioned schema of this representation of an object, each server must convert the recognized schemas to the last internal value and be able to not accept the unrecognized values

kind
This is a string value that represents the REST resource that this object represents.

Metadata
These are metadata from the standard object

Spec
This value defines a specification for the persistent volume owned by the cluster, as we see there it determines the default capacity (5 GB) and the access mode

Status
This option indicates the current status of the volume

 

The capacity and access mode value can be edited directly in the console and then we click "Create" to create the volume thanks to OpenShift Container Storage:

 

image

 

Step 10

If we want to edit any variable of this created storage volume, we go to the "Actions" button and there we can do the following:
  • Edit the labels.
  • Edit the volume itself.
  • Edit the annotations.
  • Delete the persistent volume.

 

 

 

image

 

Step 11

If we go to the YAML tab we will see all the parameters in console mode:

 

image

 

Step 12

If we want to create a volume of the type “Persistent Volumes Claims” we click there and follow the same steps:

 

image

 

Step 13

There we click on “Create Persistent Volume Claim” and then enter:
  • Volume name
  • Size in GB to use
  • Access mode, single user (RWO), shared access (RWX) or read only (ROX)

 

 

 

image

 

Step 14

We click on “Create” for its creation:

 

image

 

Step 15

Like from YAML we will see the parameters in console:

 

image

 

Step 16

We will see it created:

 

image

 

Step 17

In case you want to delete any of the created storage volumes we will always receive a warning:

 

image

 

Step 18

Finally, if we choose to use the option “Storage Classes” we click there and we will see the following:

 

image

 

Step 19

By clicking on “Create Storage Classes” you will need:
  • Enter name and volume description
  • Assign the claim policy
  • Select provider

 

 

 

image

 

As we can see, thanks to OpenShift Container Storage 4 we have the capabilities to create these types of volumes each with the necessary security measures to be a reliable and comprehensive volume.

 


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