IT-REACT

Create a Smart Home System with a Raspberry Pi, a few sensors and Node-RED – Part 2

Ioan Penu / August 16, 2020 / Leave a Comment

In the first part we learned the logic and components of the system and we configured the central component – Raspberry PI. In today’s post we’ll add some sensors and relays and we’ll integrate them with the central server via wi-fi, using the ESP8266 wireless modules. Let’s begin! Step one – Install and configure ESP8266 […]

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Create a Smart Home System with a Raspberry Pi, a few sensors and Node-RED – Part 1

Ioan Penu / June 19, 2020 / 2 Comments

This will be the first post out of series of posts about creating a smart home system with Raspberry Pi, different kind of sensors and the powerful visual tool for wiring sensor data – Node-RED. Node-RED is a flow-based development tool for visual programming for wiring together hardware devices, APIs and online services in new

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Convert an old laptop single NIC into an OPNsense Firewall/Router

Ioan Penu / June 3, 2020 / 7 Comments

In today’s post, I would like to show you the process of transforming a single NIC old laptop into an OPNsense firewall/router. I wanted for some time to install pfSense in my home network, but I didn’t want to buy an expensive already made firewall device. After spending a few days looking for a solution,

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vSphere Web Client (Flash) no longer works with Firefox after upgrading from vCenter 6.0 to 6.5

Ioan Penu / April 28, 2020 / 1 Comment

We’ve just finished upgrading VMWare infrastructure from version 6.0 to version 6.5 and we’ve noticed that vSphere Web Client (Flash) is not working anymore with Firefox. After accessing vCenter IP Address, we select vSphere Web Client (Flash) as in the screenshot and we are getting the following error: “Error: Error #2134at com.vmware.flexutil.logging::StorageObjectWriter/initialize()at com.vmware.flexutil.logging::StorageObjectWriter$/getInstanceByName()at com.vmware.flexutil.logging::LocalStoreTarget/initialize() at

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How to add a USB Disk as VMFS Datastore in ESXi 6.7

Ioan Penu / April 26, 2020 / 37 Comments

After some time using VMWare Workstation as a playground for my VM home lab environment, and after learning and testing with VM ESXi Hosts, I decided that is time to move to a hardware lab. So I achieved, for the start, 2 servers for the ESXi hosts, and because there is no HDD on the

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How to enable EVC (Enhanced vMotion Compatibility) on VMWare cluster v6.0

Ioan Penu / March 27, 2020 / Leave a Comment

In today’s post we’ll see what is EVC, in which case is needed and how we can enable it on VMWare cluster. What is EVC Let’s see first what is EVC – source VMWare: EVC stands for Enhanced vMotion Compatibility. This is a vCenter cluster feature which simplifies vMotion compatibility issues across CPU generations. EVC

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VMWare: vCenter 6.5 Upgrade Fails with VIX error

Ioan Penu / March 13, 2020 / Leave a Comment

I had to upgrade vCenter from 6.0 to 6.5. It’s not the first one, I made a few recently cause we have a client with many sites that should be upgraded. Everything was good prepared or at least I was thinking so and I was ready to start. In the evening, after the working hours

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How to find a VM with PowerCLI by searching after IP address in vCenter

Ioan Penu / March 6, 2020 / Leave a Comment

A few days ago one of my colleagues called me and asked me to add 4 HDDs to a Windows VM. Then he e-mailed me the name of the VM. I said to him that it will be ready in a few minutes. Then I’ve connected to vCenter and look after the name. No VM

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How to enable execution of PowerShell scripts and enable VMWare vSphere PowerCLI.

Ioan Penu / March 4, 2020 / Leave a Comment

As a System Administrator, you can reduce sometimes a considerably amount of time by running PowerShell scripts across your Windows Systems. Most of the scripts that you find online will not run if you haven’t configured previously PowerShell, and will throw you an unpleasant error in red fonts.My Windows is in German, so the error

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VMWARE: How to reset a VM via SSH

Ioan Penu / February 27, 2020 / 1 Comment

Working with VMWare it’s a continues challenge, with new surprises every day, but fortunately, so far, only with happy endings. Let’s see today’s story. I am working for a client that has a vCenter with 6 ESXi hosts. In order to access it, I have to start a VPN, then connect to a Windows terminal

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