Kubernetes

Essential Tool for Kubernetes Operations: A Comprehensive Guide to Creating BusyBox Containers

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Essential Tool for Kubernetes Operations: A Comprehensive Guide to Creating BusyBox Containers

Essential Tool for Kubernetes Operations: A Comprehensive Guide to Creating BusyBox Containers In daily operations and development work, we often need lightweight tools to quickly execute diagnostic commands, test network connections, or verify service statuses. <span>BusyBox</span> is such a powerful toolset with extremely low resource consumption, integrating various commonly used Unix tools like <span>sh</span>, <span>ls</span>, … Read more

Introduction to Virtualization: KVM + QEMU + libvirt Stack

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Introduction to Virtualization: KVM + QEMU + libvirt Stack

1. KVM + QEMU + libvirt Stack KVM (Kernel-based Virtual Machine) is a Linux kernel module that allows user-space programs to access hardware virtualization features of various processors. It enables the kernel to function as a hypervisor. KVM itself does not simulate hardware but delegates these tasks to higher-level client applications like QEMU. QEMU (Quick … Read more

Essential Interview Topics on Containers and Virtualization

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Essential Interview Topics on Containers and Virtualization

Container Technology File Isolation: chroot Access Isolation: namespaces Resource Isolation: cgroups LXC: Linux Containers What is a Container A completely new way of packaging and deploying software. It encapsulates the application and its dependencies (including code, runtime, system tools, system libraries, etc.) Differences Between Docker and VM Docker is an application layer abstraction, where containers … Read more

Chaos Engineering Tools: Implementing Pod-Level Fault Injection with Go

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Chaos Engineering Tools: Implementing Pod-Level Fault Injection with Go

Click the “blue text” above to follow us Late-night overtime, just about to leave, suddenly the production environment alarms go off! Checking logs, monitoring, troubleshooting… After two hours of hassle, I found out it was a cascading failure caused by a timeout in a dependent service. Sigh! Does this situation sound familiar? In a microservices … Read more

Differences and Relationships Between Pod Scheduling, Preemption, and Eviction in Kubernetes

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Differences and Relationships Between Pod Scheduling, Preemption, and Eviction in Kubernetes

This article shares the concepts related to Pod scheduling, preemption, and eviction, which are mostly theoretical but very important and often asked in interviews. I hope you can read it patiently! Kubernetes (K8s), as a container orchestration platform, has mechanisms for <span>Scheduling</span>, <span>Preemption</span>, and <span>Eviction</span> that are key to ensuring reasonable allocation of cluster resources, … Read more

Performance Evaluation of Go HTTP Frameworks: Fiber vs. Gin vs. Go Standard Library

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Performance Evaluation of Go HTTP Frameworks: Fiber vs. Gin vs. Go Standard Library

This content is a translation and organization of the performance evaluation by the well-known performance reviewer Anton Putra Fiber vs. Gin vs. Go (stdlib): Performance (Latency – Throughput – Saturation – Availability)[1]: Performance (Latency – Throughput – Saturation – Availability), with appropriate reductions, and the relevant content and conclusions are based on the original source. … Read more

Introduction to Go Project Development (Part 8): Makefile

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Introduction to Go Project Development (Part 8): Makefile

1. What is a Makefile In software development, a Makefile is a script file used for automating the build and management of projects, typically used in conjunction with the make tool. Its core objective is to automate tasks such as compilation, testing, packaging, and deployment. Makefile standardizes commands through declarative rules and dependencies, unifying the … Read more

Seamless Deployment: Optimizing K8s Configuration with ConfigMap and Secret (Part 1)

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Linux | Red Hat Certified | IT Technology | Operations Engineer👇 Join our technical exchange QQ group with 1000 members Note: [Public Account] for faster approval In Kubernetes, a ConfigMap is an object used to store configuration data. It provides a way to separate configuration data from containers, allowing the configuration of containers to be … Read more

Injecting Faults and Debugging with ChaosBlade-Operator in K8S

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Injecting Faults and Debugging with ChaosBlade-Operator in K8S

â–ŚIntroduction: A New Tool for Chaos Engineering ChaosBlade, as an open-source chaos engineering toolchain from Alibaba, abstracts chaos experiments into Kubernetes CRD resources through the ChaosBlade-Operator project. Utilizing the open capabilities of K8S, CRD resources can manage all software and hardware resources and interact with various resources, achieving declarative chaos experiment management that makes fault … Read more

Explanation of Kubernetes Pod Priority, PriorityClass, and Preemption

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Explanation of Kubernetes Pod Priority, PriorityClass, and Preemption

What is Pod Priority in Kubernetes? Pod priority is a scheduling feature in Kubernetes that allows Kubernetes to make scheduling decisions based on priority numbers by comparing other pods. Let’s take a look at the following two main concepts in pod priority. Pod Preemption Policy Pod Priority Pod Preemption Policy The pod preemption policy allows … Read more