Educational Episodes: Hyperconverged Infrastructure (HCI)

Some months ago, Microsoft acquires the Cloudyn company. This company developed an interface to manage your cost and to have billing information, for one or multiple subscription, on one console. They support some other cloud service provider like AWS and Google Cloud, it’s why it’s very interesting. For Azure, it’s free of charge to use this software. You can connect your EA, CSP or other subscription. For AWS, it’s free until June, after it will cost 1% of your revenue (on AWS or Google Cloud).

In this article, I will describe how to manage Windows Containers via GUI. Docker provides a great Docker CLI that allows us to create, interact, and delete containers, but sometimes it’s nice to have an interface to manage Containers. There are many admins who much prefer a GUI tool to handle every task and it can be useful to use an interface when you have many containers to manage or if you start working with Docker. In this article, I don’t want to judge which GUI is better because it depends! You must use the GUI that will suit your needs. So do not hesitate to test this GUI.

Looking back at the previous articles in our “How-to-Core basics”, we have managed to install the Core version of Windows Server 2016. As well, the required networks were set, and the storage for the virtual machines was created. In the final part of the trilogy, I’ll cover the steps left to prepare the environment in order to make your production highly available and fault-tolerant.

Most every application we run in our datacenters today provides some sort of web-based interface.  The push to move to HTML5, API driven GUIs is a good one – we can access things from anywhere, using any device or browser.  The problem being we are also seeing a push for security, more specifically ensuring that all our web accessible interfaces are running through SSL and only accessed through https. To get around this administrators can go out and purchase a certificate from a trusted authority, however this could get pretty expensive if you start adding up all of the self-signed certificates within your environment.  Another answer – the Microsoft Certificate Server.

In part of my job, I audit some Hyper-V clusters to remediate issues such as Live Migration. Most of the time, Live Migration part is not well configured. For example, the wrong network is selected or authentication is left to CredSSP. In this topic, I’ll show you how I configure Live Migration in Hyper-V clusters (S2D or not).

I guess once you will read through this article you will also notice how this technology is shaped out of familiar building blocks, but what I also hope for is that you will get a grasp of what is AlwaysOn, and get a basic understanding of how it works. I will fully cover installation and configuration of SQL Server AlwaysOn environment (using new and shiny SQL Server 2017) in my next article while focusing on technology overview here.

How does it work?

Being triggered, the Node Fairness service determines the current workload on the cluster hosts. If needed, it automatically migrates VMs to the less loaded host.

After the start, the cluster service checks the host for two factors:

• If the average host CPU load exceeds the tolerated threshold
• If the average host memory utilization is higher than the tolerated threshold

In case either of these criteria is met, the VM gets live migrated to the less loaded host. Neither guest system nor services do experience any downtime.

What was a privilege of enterprises just a few years ago, now becomes a common thing for companies of all sizes – I’m talking about cloud. The number of cloud storage providers grows, delivering various solutions that fit the needs of different organizations in terms of features and prices. Moreover, the competition in the cloud market is getting tougher, making cloud storage providers cut their prices just to stay afloat. Therefore, cloud becomes a really great alternative to purchasing more physical storage or compute resources to maintain data and applications. However, despite there is a wide range of cloud offerings, we still struggle with choosing a cloud provider that offers us storage we need without charging us a steep price in the end of the billing period. So today, we’ll have a closer look at some public cloud providers to decide on the cheapest storage.

One day, any VMware administrator may require the so-called “support bundle” which contains log-files, diagnostic information, and performance metrics. Taken together, these parameters allow troubleshooting VMware vSphere. The bundle provides VMware GSS (Global Support Services) the insight into virtualized environment configuration which allows them to resolve issues, when a client submits a support ticket with this bundle attached.