在一次异常重启后，Ceph 集群出现了 PG 状态异常、部分 RBD 镜像无法正常启动等问题。本文记录了从 PG 状态检查、unfound object 定位、RBD 镜像关联分析，到后续 OSD 异常处理和业务数据恢复的完整排查过程。 一、事故背景 在一次异常重启后，Ceph 集群出现了 PG ...

Every year, hundreds of thousands of South African learners sit their final matric exams and face the same question the ...

Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and commercial projects on an ongoing basis without requiring additional payments each time you use that ...

在当今快速发展的IT行业中，技术边界日益模糊，全栈能力成为越来越多开发者的追求目标。作为传统后端开发主力的Java程序员，掌握前端知识已不再是"锦上添花"的可选项，而是职业发展中越来越重要的"必备技能"。本文将从行业发展趋势、技术演进方向、市场 ...

在前端开发的世界里，HTML、CSS和Java一直被视为不可或缺的三剑客。HTML构建页面结构，CSS负责视觉效果，而Java则为网页提供交互性。然而，最近一位名叫Benjamin Aster的开发者却打破了这一传统，他用纯HTML和CSS创造了一个《我的世界》（Minecraft）的克隆版，整个 ...

There is a lot of noise around saying – uninstall or disable Java – as it is vulnerable. Studying the topic, I found almost all versions have gone through similar exploits in the past. Sun, and later, ...

Building a website can be exciting as well as challenging as it helps to learn the foundational skills required for web development. One can use HTML, CSS, and ...

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