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      <title>k8smysql 启动即 OOM 排查复盘</title>
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      <description>k8smysql 启动即 OOM 排查复盘 一句话：-1/-2 节点的 containerd.service 设了 LimitNOFILE=infinity，容器内 nofile 被拉到 ~2³⁰，mysqld 启动按 nofile 预分配 fd 结构 ≈ 16 GiB，撑爆 4Gi limit → 启动 1 秒即 OOMKilled。与镜像、MySQL 配置、PVC 全无关。 现象 k8smysql/mysql-* pod CrashLoopBackOff，O</description>
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