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David Cao

David is a Cloud & DevOps Enthusiast. He has years of experience as a Linux engineer. He had working experience in AMD, EMC. He likes Linux, Python, bash, and more. He is a technical blogger and a Software Engineer. He enjoys sharing his learning and contributing to open-source.

Minikube is an invaluable tool for developers looking to test and develop Kubernetes applications locally. However, when running Minikube with Kubernetes version 1.24 or higher using the none driver and Docker as the container runtime, you might encounter the NOT_FOUND_CRI_DOCKERD error. minikube start –vm-driver=none 😄 minikube v1.32.0 on AlmaLinux 8.6 ✨ Using the none driver …

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minikube start –vm-driver=none 😄 minikube v1.17.1 on Ubuntu 20.04 ✨ Using the none driver based on user configuration ❌ Exiting due to GUEST_MISSING_CONNTRACK: Sorry, Kubernetes 1.20.2 requires conntrack to be installed in root’s path Understanding GUEST_MISSING_CONNTRACK error The error message you’re encountering indicates that conntrack, a required dependency for Kubernetes 1.20.2, is missing from the …

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minikube start –vm-driver=none 😄 minikube v1.32.0 on Almalinux 8.6 ✨ Using the none driver based on user configuration ❌ Exiting due to GUEST_MISSING_CONNTRACK: Sorry, Kubernetes 1.28.3 requires crictl to be installed in root’s path The message you’re seeing is from attempting to start Minikube with a specific configuration on your Almalinux 8.6 system. Here’s a …

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Installing Stable Diffusion on a Mac, particularly those with Apple Silicon M1/M2 chips, offers several user-friendly options. Ways to Install Stable Diffusion on Apple Mac  Using AUTOMATIC1111: This is a more technical route that involves cloning the web UI repository, placing Stable Diffusion models in the specified directory, and running commands in the terminal to …

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Introduction In the world of network administration, tcpdump stands out as a powerful tool for understanding network traffic. It’s like having a high-powered microscope for your network, allowing you to see the intricacies of what’s happening beneath the surface. This article will focus on a specific aspect of tcpdump: writing captured packets to a file …

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Optimizing the PostgreSQL database server’s performance heavily relies on adept memory management. The server’s behavior is governed by settings in the postgres.conf file. While default parameter values are provided, customizing these to align with specific workloads and operational environments can significantly boost efficiency. Understanding PostgreSQL’s Memory Architecture PostgreSQL categorizes memory into two distinct types: Local …

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To open a port with Python, you typically create a server socket that listens on a specific port for incoming connections. Here’s a simple example of a server that listens on a specific port: import socket # Create a socket object s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # Define the port on which you want to connect …

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