Administration Section
Backing up virtual machines is one of the areas that deserves special attention when optimizing a company's expenses. We explain how to set up backups in the cloud while saving your budget. Databases are a valuable asset for any company. For this reason, virtual machines have become in demand. Users can operate in a virtual environment that provides protection against physical extraction […]
Kubectl is an effective command-line tool for Kubernetes that we use daily. It has many features, allowing you to deploy a Kubernetes system or its basic functionalities. Here are some useful tips to code and deploy faster in Kubernetes. Kubectl Autocompletion You'll be using Kubectl constantly, so with autocompletion, you won't have to worry about typing too much […]
In the previous part of this interesting story, we discussed organizing the header library within the CMake build system generator. This time, we'll add a compiled library and talk about linking modules together. As before, those who can't wait can jump directly into the updated repository and try everything out for themselves. Contents Divide and Conquer […]
Hello everyone, Habr users! The inspiration for writing this article came from the frequent triggers of the Zabbix monitoring system regarding speed drops in the 'Tele2' network. For remote locations where it is impossible to lay fiber optics, we organized port forwarding for the recorder through USB modems, re-flashed for any operators. Here's a simple communication scheme for the equipment: By the way, our organization also uses in the same […]
Some examples of corporate WiFi organization have already been described. Here I will outline how I implemented a similar solution and the issues I encountered when connecting on different devices. We will use the existing LDAP with registered users, set up FreeRadius, and configure WPA2-Enterprise on the Ubnt controller. It seems straightforward. Let's see… A little about EAP methods Before proceeding with the implementation […]
Today we will continue our discussion of VLAN and talk about the VTP protocol, as well as the concepts of VTP Pruning and Native VLAN. In one of the previous videos, we discussed VTP, and the first thing that should come to mind when you hear about VTP is that it is not a trunking protocol, even though it is called a 'trunking protocol' […]
Some time ago, I created a system for assessing the viability of office UPS. The evaluation is based on long-term monitoring. As a result of using it, I refined the system and learned a lot of interesting things, which I will share—welcome under the cut. Part One Overall, the idea turned out to be correct. From a one-time query to the UPS, you can only learn that life is pain. Part […]
Today's lesson will be dedicated to VLAN settings, meaning we'll try to implement everything we've discussed in previous lessons. We will address three questions: creating VLANs, assigning VLAN ports, and viewing the VLAN database. Let's open the Cisco Packet Tracer program window with the logical topology of our network that I have drawn. The first switch SW0 is connected to two computers PC0 and […]
Hello, Habr! I present to you a translation of the article 'Service mesh data plane vs control plane' by Matt Klein. This time, I 'felt compelled and translated' the description of both components of the service mesh, data plane, and control plane. I found this explanation to be the most clear and interesting, and, most importantly, leading to the understanding of 'Is it really necessary?'. Since the idea of a 'Service Mesh […]
TL;DR: after a few days of experimenting with Haiku, I decided to install it on a separate SSD. However, it turned out to be more complex than expected. Intensive work is ongoing to check Haiku's booting process. Three days ago, I learned about Haiku, an unexpectedly good operating system for PCs. Now it's the fourth day, and I want to do more 'real work' with this system, but the partition […]
System Purpose Remote access to files on computers within the network. The system 'virtually' supports all major file operations (creation, deletion, reading, writing, etc.) through transaction (message) exchanges over the TCP protocol. Areas of Application The system's functionality is effective in the following cases: in native applications for mobile and embedded devices (smartphones, onboard control systems, etc.), requiring fast […]
I saw a publication about how PVS has indeed learned to analyze on Linux, and decided to try it on my projects. Here’s what I found. Contents Pros Cons Conclusion Afterword Pros Responsive support I requested a trial key, and received it the same day. The documentation is quite understandable. I managed to launch the analyzer without any major issues. The help for console commands […]