vSphere 6.0 Update 2 is now available. We discuss the new functionality and fixes you should expect with the release, with a focus on VMware Host Client. Check out the post to keep yourself informed.
Jason discusses two tools that you can use to ensure that your hardware and software are VMware compatible. Check out how to correctly check for compatibility using this guide.
Fault Tolerance uses replication to a secondary VM in order to create an environment of Zero Interruption and no downtime in vSphere 6. Find out how to configure and implement it using Jason’s guide.
Explore the features and benefits of VMware DRS (Distributed Resource Scheduler), and how to take advantage of it’s features in a vSphere cluster for a more balanced workload.
VMware PowerCLI is a PowerShell interface for managing vSphere. It allows IT Pros to not only perform all vSphere administrative tasks, but also automate them. For example, let’s say you have a 50 node ESXi cluster and need to make a change to one of the iscsi configurations on each host. You could either manually make the change on each node spending a few hours, or use PowerCLI to change the setting for all nodes in a matter of minutes. Making host or VM changes isn’t the only way PowerCLI can be used. It can also be used for quickly gathering data. There are scripts available such as the VMware Health Check script that will email an HTML report on the status of various items on each host like VMs with enabled snapshots or data stores that are almost full. Automation is now starting to become a crucial part… Read More»
In the first post from this series, I talked about vSphere Update Manager and the role it plays in securing vSphere environments by keeping your hosts and resource updated with the latest updates and patches. In today’s post, I’ll be taking you through the actual installation process for VUM 6.0. Some of the topics discussed include baselines and upgrade an ESXi host. Without further ado, let’s dive in. How to Install vSphere Update Manager (VUM) Before you begin, make sure that .NET Framework 3.5 is installed otherwise the VUM installation wizard alerts you to it and will try to install it automatically. There’s a chance this will fail, so you’d be better off installing it manually prior to running the VUM installation wizard. Next, get hold of the vCenter Server ISO image (ex. VMware-VIMSetup-all-6.0.0-3040890.iso) which you can download from VMware’s site unless you already have it, which is… Read More»
Patch management is an integral component of any organization’s security policy. The aim is to mitigate security threats through preventive maintenance. Needless to say, patching up systems in a timely fashion in response to freshly discovered vulnerabilities and ensuing exploits, is vital. Ignore it at your own peril but it’s a safe bet to say that your system will end up compromised sooner or later if you do so. In part one of this 2-part series, I’ll be discussing VMware’s vSphere Update Manage (VUM) covering both the requirements and deployment models. In part 2, I will take you through the installation steps and a few usage scenarios. What is vSphere Update Manager (VUM)? vSphere Update Manager (VUM) is VMware’s take on centralizing patch and version management for ESXi hosts, virtual applications (vApps) and virtual machines. If you’re familiar with patching Microsoft software, you can think of VUM in terms of… Read More»
We’ve seen many new trends in technology over the last several years. Perhaps none of these technologies is as polarizing as the topic of Hyper-Convergence. Hyper-Convergence is the concept of putting storage and compute within the same chassis, with the idea that scale-up operations will be much simpler. There are many companies that are starting to delve into this space, such as VMware, Nutanix, and now Microsoft with Storage Spaces Direct. As everyone is starting to develop their own Hyper-Converged solution, does that mean the industry is finally ready to adopt this technology en masse, instead of the niche adoption we’ve seen thus far? To Find out more, we asked a number of VMware vExperts what their thought were on the topic. The Question We asked them a single two part question: “In the next 1 – 3 years, do you see Hyper-Converged technologies such as VMware VSAN becoming mainstream?… Read More»
In this final part of the series, I’ll show you how to install and configure vCenter Server for Windows 6.0 as part of a nested vSphere 6 environment. I’ll be installing vCenter on a Windows Server 2012 64-bit virtual machine. Note that Windows Server 2008 SP2 64-bit is the minimum supported OS version. When creating the VM, make sure to assign at least 8GB of RAM, 2 vCPUS and roughly 60-80GB of disk space to compensate for both the Windows OS and vCenter Server disk space requirements. In this post, I skipped the part where you install and configure the Windows Server OS. The Platform Services Controller Before we jump in and start installing vCenter Server, let’s have a look at the Platform Services Controller (PSC) component. Prior to vSphere 6, one had to install a number of individual components alongside vCenter Server namely the SSO,… Read More»
In part 2 of this series, I’ll cover how to install ESXi 6.0 on the shell VMs created in Part 1. The installation steps given here remain the same regardless of installing ESXi as a nested hypervisor or on a bare metal server. UPDATE: Since writing this series, vSphere 6.5 has been released. You can read about a few nesting related features exclusive to ESXi 6.5 here as well as how to install this new release here. Installing ESXi Remember that, as if often the case with many VMware products, it is important to create DNS records (A and PTR) in advance more so the ones assigned to ESXi hosts and vCenter Server. This lessens the chances of coming across SSL certificate issues and improves management of the overall infrastructure. In this section, I’ll take you through the process of installing ESXi on the VMs prepared in Part 1.… Read More»
What is EVC? EVC stands for Enhanced vMotion Compatibility which is a vCenter Server cluster-centric feature allowing virtual machines to vMotion or migrate across ESXi hosts equipped with dissimilar processors in the same cluster. VMware EVC Mode works by masking unsupported processor features thus presenting a homogeneous processor front to all the virtual machines in a cluster. This means that a VM can vMotion to any ESXi host in a cluster irrespective of the host’s micro-architecture examples of which include Intel’s Sandy Bridge and Haswell. One caveat to remember is that all the processor(s) must be from a single vendor i.e. either Intel or AMD. You simply cannot mix and match. What are the benefits? The main benefit is that you can add servers with the latest processors to your existing cluster(s) seamlessly and without incurring any downtime. More importantly, EVC provides you with the… Read More»
Managing services on ESXi, is one task you’ll find yourself doing over and over again. In today’s post, I’ll focus on the SSH service this being from experience, one that is constantly enabled and disabled. It’s worth mentioning that disabling services that are seldom used is standard security practice as is enabling critical ones on a need-to-use only basis. The aim, here, is to reduce the attack surface of a system. Indeed, restricting SSH access on ESXi is one such example, which despite being a royal pain for many, is ultimately good practice. There are three main methods you could use to manage the SSH service on ESXi these being the DCUI, vSphere clients and PowerCLI. Let’s review them all. Method 1: Direct Console User Interface (DCUI) For illustration purposes, I’m using a nested ESXi environment. In a production environment, you probably must walk or drive to where the server is located.… Read More»
What is vSAN? Before we dive into the nitty gritty of setting up vSAN, I’d first like to give a brief introduction of what vSAN is all about. VSAN, short for VMware Virtual SAN, has been around since March 2014 and is VMware’s take on hyper-convergence or the abstraction of storage from the underlying hardware. Additionally, a single pane of glass, the vSphere client, is used to manage all your storage and virtualized resources. The main concept behind vSAN is to pool local hard drives on ESXi hosts and present them as a single shared datastore mimicking shared storage. If this isn’t neat, I don’t know what is! In practical terms, this means you now have the option to choose between an often complicated and expensive shared storage solution – think SAN, NAS and all the hybrids in between – and a one stop shop for all… Read More»
Welcome to the first installment of this three-part series where I’ll show you how to set up a nested vSphere 6 environment comprising vCenter Server 6.0 for Windows and ESXi 6.0 hosts. If the term nested virtualization is alien to you, don’t worry. All it means is that we will be running a hypervisor as a VM running under another hypervisor. So, in this case, ESXi will be installed as a VM which is itself hosted on a physical ESXi host. One of the advantages of nesting, is that you can test out new VMware features or simulate upgrade paths to a new vSphere release. Nesting is also frequently used for QA/DEV and other testing environments as well as for home labs. In Part 1, we will have a look at how to download the required VMware ISO images and how to create the VMs needed for the nested ESXi… Read More»
Download 30-day trial or Free Edition (free for 2 VMs, forever.)