导语： 本以为是一次平平无奇的K8s集群升级：更高版本、更潮的操作系统（Ubuntu 22.04替换CentOS 7.9）。谁曾想，当业务迁移启动，部分Java应用竟接连崩溃，报错 OOMKilled！内存限制从2Gi加到8Gi才勉强活过来，但资源消耗异常飙升，还有个神秘的磁盘写入在捣鬼... 一场由 cgroup v2 引发的“血案”，就此拉开序幕！运维人Clay带你直击排查现场，避开这个大坑！

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当时还在Sun公司麾下的Java宣布将开源，这就是OpenJDK项目的起点。而Oracle JDK则是在Sun被Oracle收购后推出的商业版本。它们的关系用一句话概括就是：OpenJDK是Java的官方开源实现，Oracle JDK是基于OpenJDK的商业发布版本。 前言 最近几天，我在星球中建议大家使用Open ...

Java 25, an LTS (long-term support) version, is now at release candidate (RC) stage with general availability scheduled for September 16. The RC release is the first of two, with the second set for ...

Slow internet in a VirtualBox VM is a common issue caused by suboptimal network configuration, driver limitations, or resource constraints. VirtualBox virtualizes network hardware, which can introduce ...

Powerful DevOps analytics solution now supports Oracle JDK and any OpenJDK-based distribution Azul, the only company 100% focused on Java, has announced that Azul Intelligence Cloud, ...

Community driven content discussing all aspects of software development from DevOps to design patterns. To use any of these JVM options, simply append them as text after the java runtime command. For ...

Community driven content discussing all aspects of software development from DevOps to design patterns. Java has been around for almost 30 years, and Oracle regularly boasts that the Java Virtual ...

Microsoft Hyper-V is a native hypervisor for Windows, allowing you to run virtual machines (VMs) with various guest operating systems. Unlike VMware’s hypervisor products, you can’t deploy a VM ...