IT Operations Basics: Disk Space Crisis: How to Resolve a Full Root Partition and Overloaded Docker Overlays
Introduction Running out of disk space on a server can be a frustrating experience. It leads to application malfunctions, system instability, and even crashes. Recently, I encountered a critical situation where my server’s root partition (/dev/vda3) and multiple Docker overlay filesystems were reporting 100% utilization. This article outlines the steps I took to diagnose and…
IT Operations Basics: How to Fix Wi-Fi Problems: A Comprehensive Guide
Wi-Fi issues are a common frustration for many people. Whether you’re working from home, streaming your favorite show, or gaming online, a slow or unstable connection can ruin your experience. In this blog post, we’ll explore some practical steps to troubleshoot and resolve Wi-Fi problems effectively. Common Wi-Fi Issues and Their Causes Before diving into…
IT Operations Basics: Remove FQDN access restrictions in OVIRT
Create a new configuration file:vi /etc/ovirt-engine/engine.conf.d/gg-sso.confAdd the following content to the file, then save and exit by typing :wq:SSO_CALLBACK_PREFIX_CHECK=falseRestart the ovirt-engine service:systemctl restart ovirt-engine.serviceAfter completing these steps, you can access the console directly using either the domain name or IP address.
IT Operations Basics: When taking a snapshot in vSphere ESXi, should you include the memory snapshot?
When creating a snapshot in vSphere ESXi, you have the option to include the virtual machine’s memory. This is an important consideration as it impacts the snapshot’s creation speed, revert speed, and consistency. Here’s a detailed breakdown of capturing memory in snapshots versus not: Capturing Memory (Snapshot with Memory): Not Capturing Memory (Snapshot without Memory):…
IT Operations Basics: Mastering DevOps: A Beginner’s Guide to CI/CD Pipelines
Hey everyone! 👋 Ever heard the buzz around DevOps and wondered what it’s all about? Or maybe you’re familiar with the concept but feel lost when it comes to terms like “CI/CD pipelines”? Well, you’ve come to the right place! This blog is your friendly, beginner’s guide to understanding one of the most crucial parts…
Network Engineering Windows Ping Tool Comparison: GPing vs Fping
When it comes to advanced ping tools on Windows, GPing and Fping are often mentioned as top contenders. Both tools enhance the traditional ping experience, offering more features and customization. But which one suits your needs better? In this blog, we’ll compare GPing and Fping, examining their features, ease of use, and unique capabilities. Overview…
Operations Engineering Creating Dynamic Network Topology Maps with Zabbix
First, let’s take a look at the dynamic topology map effect of Zabbix: Creating Dynamic Network Topology Maps with Zabbix Monitoring network status is a routine task in operations and maintenance. Manual detection is too cumbersome, but now many experts have developed many useful tools that are not only visually appealing but also very practical….
Industry News The Ideal Choice for Kubernetes Clusters: A Detailed Explanation of the CRI-O Container Runtime
In the era of containerization, Kubernetes has become the de facto standard for deploying and managing cloud-native applications. Choosing the right container runtime is crucial when building and maintaining Kubernetes clusters. This article delves into the four common container runtimes officially provided: Docker Engine, containerd, CRI-O, and Mirantis Container Runtime, and recommends using CRI-O for…
IT Operations Basics: Mapping to a specified port for VMRC when accessing ESXI via public network
If both port 80 and port 443 of your public IP are occupied, accessing the ESXI server can be very inconvenient. Currently, there is an enterprise-level server with ESXI installed. When accessing internally, VMRC starts without any issues. However, when accessing externally, since port 443 is mapped to 666, there are no problems with web…