Category: Tech

Everything tech: deepdive on the most important technologies, tips and tricks for everyday’s work, tutorial, step-by-step guides, videos and manuals.

Tech

Backup performance of VMware VVOLs

Luca Dell'Oca,

Virtual Volumes, or VVOLs, has been one of the biggest addition in VMware vSphere 6. If your storage array supports them, you can start to play with it and decide if it’s time to migrate from monolithic VMFS volumes to this new exciting storage technology. VVOLs have several advantages over regular VMFS volumes, from the granularity of the volume management (essentially, we have now one “LUN” per virtual disk), to policy-based management, and so on. One of the aspects that people didn’t focused too much is the impact on backup operations coming from VVOLs.

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Tech

An example for a Veeam backup repository using Windows 2016

Luca Dell'Oca,

In my previous article Windows 2016 and Storage Spaces as a Veeam backup repository I talked about the advantages that Veeam Backup & Replication can bring when combined with Windows Server 2016 and the new ReFS 3.1 filesytem. Several people have asked already about some practical examples about how to design a solution using these technologies, so I thought it was time to give you one storage design.

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Tech

Patching windows servers with Ansible

Luca Dell'Oca,

After I configured my Ansible server to manage my windows machines in the previous article, one of the first tasks I planned to automate was patching. Patching is one of those extremely boring but needed activities, and in any environment, even with a small amount of server, automated patching may be a savior. As long as proper data protection is in place, like a daily backup of the involved virtual machines, we can safely plan automatic updates, and if anything goes wrong, we just need to revert the virtual machine to the previous state.

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Tech

Configuring Windows machines for Ansible

Luca Dell'Oca,

As I’m studying Ansible, one of my goal is to manage my several Windows machines with it. I know it sounds strange as Ansible was first designed to deal with Linux systems, but this powerful configuration management platform supports Windows since version 1.7, and is completely agentless: it relies on SSH for linux/unix machines, and Windows Remote Management (WinRM) for Windows machines. Through WinRM, Ansible can connect to Windows machines ard run PowerShell scripts. The idea of using Powershell as the main code to execute tasks in Windows systems, together with the agentless approach, made me be even more curious in learning more about the Windows support.

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Tech

Tunnel all your remote connections through ssh with a linux jumpbox

Luca Dell'Oca,

As many guys working in IT, I have my own lab. I usually prefer to use my own lab as the degree of freedom I can experience cannot be compared with a corporate lab. It often happens that some specific configurations (one for all, my vCloud Director environment) are better looking in my own lab than any other place, and so I also use my lab to show those technologies to partners and customers. This is easy when I’m at home, but I may be in an hotel room, in a conference room at the customer’s site, or another different place, and in many of these situations it may happen (and it happened enough times to justify this little project) that the connections to my lab are blocked by a firewall or another device. I have two ways to connect to my lab: an RDP to a jumpbox machine, published on a different port that the usual TCP/3389, and an ipsec vpn concentrator. In one case, none of them was possible at a customer, so we ended up with a colleague of mine tethering from his phone. I decided it was time to develop a better solution that was able to work in almost any situation. And my solution involves the always amazing SSH.

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