07 julio 2019

It has been a long time....

...and this is the time to come back. Just writing a serie of post to back again to the scene.
Stay tuned...

23 enero 2017

Containers and VMware

I´ve heard a lot of times in the last months about the containers will replace the virtual machines but nothing could be more untrue.
This kind of conversations come from the lack of knowledge about the different technologies and a bit of misunderstanding about what we can do with VMs or containers.

A container is an isolation unit of the kernel from the kernel subsystem but linked or bound to the same kernel where it was created or run. Nowadays, there are a lot of companies that develop container technologies: Docker, Rocket, Garden, etc.

Now, let´s review about what Docker is explained by VMware as it is the most famous container runtime: "Docker is not a container technology. It uses Libcontainer directly or in conjunction with LXC, libvert, OpenVZ, and others. Docker introduced the idea of creating images out of containers.  These images reside on a layered filesystem.  Each layer consists of a change made to a container.  This allows for quick image updates and downloading of new images.  You can build an image from a container that you created or you can download an existing image, update it and then commit the changes into a new image.  These images can reside locally in a private registry like VMware Harbor or in a publicly available registry, like DockerHub"

So, what's about VMware? how VMware can help in this new container technology wave? One of the best approach is join the best of both worlds: VMs and Containers.

In the next image you can see the stack for VMware: storage VSAN, network NSX, hypervisor vSphere, containers VCH and mgmt with vRealize... at the end operations an developer world fits into the same datacenter.  

To accomplish that, VMware had developed different open-source projects. You can find all of them in Github: Admiral, Harbor and vSphere Integrated Containers:

vSphere Integrated Containers (VIC) is the add of three components: Engine, Harbor and Admiral.
Admiral is the container management portal.
Harbor is the container registry for containers.

An important piece of VIC is Photon: "an OSS based linux container host runtime optimized for VMware vSphere"  https://vmware.github.io/photon/ 
How all this projects fits together? check this schema to understand how: VIC Engine + Admiral + Harbor

At the end of the day, what you will get is that with VIC containers will be created in vSphere as  virtual machines so you will be able to apply most of the features in vSphere to them (functions, monitoring, automation, security, networking, etc) in a transparent fashion for the developers as they will continue to use API to create containers, apps, and so on.  You win visibility of the container environment as VMs, which is critical to manage a infrastructure.

Last but least, just to clarify, "vSphere Integrated Containers is available to all vSphere 6.0 and above Enterprise Plus customers. There is no additional license subscription required to use vSphere Integrated Containers. You can download it from myvmware.com"

18 octubre 2016

vSphere 6.5 announced at VMworld 2016 Barcelona

vSphere 6.5 was announced at VMworld 2016 Barcelona.
As you may know, VCSA is the recommended deploy option since vSphere 6 was released in Feb`2015 and most of the new improvements are realted with that, for example, now we have native high availability for VCSA, the VUM (VMware Update Manager) is now integrated (remember that in vSphere 6.0 we need to install it only on Windows) and the new native backup and restore options which cover most of the complaints with the VCSA.

  • ·      VMware vCenter Server® Appliance - will deliver a simplified building block for vSphere environments offering an easy to deploy and manage approach that reduces operational complexity by embedding key functionality into a single virtual appliance. The appliance will offer customers simplified patching, upgrading, backup and recovery, high availability and more, including a 2x increase in both scale and performance of their vCenter Server environments.
  • ·      REST APIs - will improve both the IT and developer experience by enabling greater control and automation of virtual infrastructure for modern applications via new REST-based APIs.
  • ·      VMware vSphere Client - based on HTML5, the new vSphere Client will simplify the administrative experience via a modern, native tool that meets the performance and usability needs and expectations of users for day-to-day operations.
  • ·      VM Encryption - new virtual machine-level encryption will protect against unauthorized data access safeguarding data at rest as well as virtual machines that are moved with VMware vMotion®.
  • ·      Secure Boot - new feature will prevent the tampering of images as well as the loading of unauthorized components into vSphere environments.
  • ·      VMware vSphere Integrated Containers™ - will allow IT operations teams to provide a Docker-compatible interface to their app teams enabling vSphere customers to transform their businesses with containers without re-architecting their existing infrastructure.

Two great features for me right now is to have the option to backup and restore the VCSA removin the dependency with third party backup solutions in one hand, and to have the option  to secure and encriptyon the VMs in other hand, so security is now done with VCSA 6.5

In the next post i´ll cover one by one the new features, meanwhile you can check the official landing page: http://blogs.vmware.com/vsphere/2016/10/introducing-vsphere-6-5.html