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&nbsp;1）通过inode节点查看被删除的文件名字：&nbsp;\u003C/span>\u003Cbr>\u003Cspan>&nbsp;&nbsp; &nbsp; &nbsp; [root@localhost ~]# extundelete /dev/sda3 --inode 15&nbsp;\u003C/span>\u003Cbr>\u003Cspan>&nbsp;&nbsp; &nbsp;2）通过文件名恢复 ：&nbsp;\u003C/span>\u003Cbr>\u003Cspan>&nbsp;&nbsp; &nbsp; &nbsp; [root@localhost ~]# extundelete /dev/sda3 --restore-file 1.txt&nbsp;\u003C/span>\u003Cbr>\u003Cspan>&nbsp;&nbsp; &nbsp; &nbsp; [root@localhost ~]# diff /root/1.txt RECOVERED_FILES/1.txt #没有任何输出，说明文件一致。&nbsp;\u003C/span>\u003Cbr>\u003Cspan>&nbsp;&nbsp; 3）恢复某个目录，如目录www下的所有文件：&nbsp;\u003C/span>\u003Cbr>\u003Cspan>&nbsp;&nbsp; &nbsp; &nbsp; [root@localhost ~]# extundelete /dev/sda3 --restore-directory www&nbsp;\u003C/span>\u003Cbr>\u003Cspan>&nbsp;&nbsp; 4) 恢复所有文件&nbsp;\u003C/span>\u003Cbr>\u003Cspan>&nbsp;&nbsp; &nbsp; &nbsp; [root@localhost ~]# extundelete /dev/sda3 --restore-all&nbsp;\u003C/span>\u003Cbr>\u003Cspan>5、注意要点&nbsp;\u003C/span>\u003Cbr>\u003Cspan>&nbsp;&nbsp; &nbsp; 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 server_name www.zhl123.cn","/article/100",11848,"2019-11-26 16:10:57","2019-11-26 16:23:45",{"id":254,"category_id":6,"title":255,"keywords":256,"description":257,"image_url":10,"url":258,"hits":259,"is_recommend":15,"is_top":15,"create_time":260,"update_time":261},41,"Tomcat 安全配置与性能优化","tomcat，性能优化","1. JVM&nbsp;1.1. 使用 Server JRE 替代JDK。&nbsp;服务器上不要安装JDK，请使用 Server JRE. 服务器上根本不需要编译器，代码应该在Release服务器上完成编译打包工作。&nbsp;理由：一旦服务器被控制，可以防止在其服务器上编译其他恶意代码并植入到你的程序中。&nbsp;1.2. JAVA_OPTS&nbsp;export JAVA_OPTS=\"-server -Xms512m -Xmx4096m &nbsp;-XX:PermSize=64M -","/article/41",11623,"2016-09-01 17:06:36","2018-10-18 17:06:58",[263,271,279,287,295,303,311,319,328,337],{"id":264,"category_id":92,"title":265,"keywords":10,"description":266,"image_url":10,"url":267,"hits":268,"is_recommend":15,"is_top":15,"create_time":269,"update_time":270},123,"Agent Skill 精选集：最值得收藏的 Agent Skills Top 10","如果你正在用 Claude Code 或 Codex，一定对&nbsp;Agent Skills&nbsp;不陌生。通过安装&nbsp;Agent Skills，你可以让这些 AI 助手变得更强——不用每次都解释你的需求，它们直接就知道该怎么做。最近有人在 GitHub 上做了一个采样调查，统计了哪些 Skills 的质量最佳和最受欢迎。我整理了这份&nbsp;Top 10 榜单，加上使用场景和适合人群，帮你快速找到最有用的那几个。Top 10 最受欢迎的 Agent Skills1. Skil","/article/123",270,"2026-01-19 18:49:12","2026-01-19 18:52:01",{"id":272,"category_id":6,"title":273,"keywords":10,"description":274,"image_url":10,"url":275,"hits":276,"is_recommend":15,"is_top":15,"create_time":277,"update_time":278},122,"Nginx性能调优18条黄金法则：支撑10万并发的配置模板","一、概述1.1 背景介绍说实话，Nginx调优这事儿我踩过无数坑。记得2019年双11，我们电商平台流量暴涨，Nginx直接扛不住了，QPS从平时的2万飙升到8万，响应时间从50ms飙到了2秒，最后还是靠临时加机器扛过去的。那次事故之后，我花了大半年时间专门研究Nginx的性能极限，总结出了这20条黄金法则。Nginx作为目前最流行的Web服务器和反向代理，官方数据显示单机可以轻松处理10万+的并发连接。但实际生产环境中，很多同学拿到默认配置就直接上了，结果发现连1万并发都扛不住。问题不在Ngi","/article/122",337,"2026-01-12 11:11:50","2026-01-12 11:12:28",{"id":280,"category_id":48,"title":281,"keywords":10,"description":282,"image_url":10,"url":283,"hits":284,"is_recommend":15,"is_top":15,"create_time":285,"update_time":286},121,"Docker 镜像优化与安全扫描：将镜像体积压缩 70%","1. 适用场景 & 前置条件项目要求适用场景容器化应用镜像体积过大（> 500MB），构建时间长（> 10分钟），存在安全漏洞（CVE高危）OSRHEL/CentOS 7.9+ 或 Ubuntu 20.04+内核Linux Kernel 3.10+软件版本Docker 20.10+ 或 Podman 3.0+，Trivy 0.40+（安全扫描工具）资源规格2C4G（最小）/ 4C8G（推荐），磁盘 50GB+（存储镜像与缓存）网络可访问 Docker Hub/阿里云镜像仓库（","/article/121",309,"2026-01-06 11:54:35","2026-01-06 12:01:59",{"id":288,"category_id":6,"title":289,"keywords":10,"description":290,"image_url":10,"url":291,"hits":292,"is_recommend":15,"is_top":15,"create_time":293,"update_time":294},120,"用 Prometheus Recording Rules 把告警噪声砍掉 70%(二)","五、故障排查和监控5.1 故障排查◆ 5.1.1 日志查看# 查看 Prometheus 日志中的规则评估错误journalctl -u prometheus | grep -i&nbsp;\"rule\"&nbsp;|&nbsp;tail&nbsp;-50# 查看规则评估耗时curl -s http://localhost:9090/api/v1/rules | jq&nbsp;'.data.groups[].rules[] | select(.health != \"ok\")'# Kubernet","/article/120",282,"2026-01-06 11:53:50","2026-01-06 11:54:33",{"id":296,"category_id":6,"title":297,"keywords":10,"description":298,"image_url":10,"url":299,"hits":300,"is_recommend":15,"is_top":15,"create_time":301,"update_time":302},119,"用 Prometheus Recording Rules 把告警噪声砍掉 70%(一)","一、概述1.1 背景介绍在大规模微服务架构下，Prometheus 告警系统往往会陷入一个尴尬的境地：告警太多，运维团队开始选择性忽略；告警太少，真正的故障又可能漏掉。我在某电商平台负责监控体系建设时，团队每天要处理超过 2000 条告警，其中 70% 以上是重复的、关联的或者短暂抖动产生的噪声。Recording Rules 是 Prometheus 提供的预计算机制，可以将复杂的查询表达式预先计算并存储为新的时间序列。通过合理设计 Recording Rules，我们不仅能显著降低 Prom","/article/119",301,"2026-01-06 11:51:58","2026-01-06 11:53:45",{"id":304,"category_id":6,"title":305,"keywords":10,"description":306,"image_url":10,"url":307,"hits":308,"is_recommend":15,"is_top":15,"create_time":309,"update_time":310},118,"GitOps 落地实践：ArgoCD + Kustomize 实现声明式基础设施管理(二)","四、最佳实践和注意事项4.1 最佳实践4.1.1 性能优化优化点一：减少 Git 轮询频率# argocd-cm ConfigMapapiVersion:&nbsp;v1kind:&nbsp;ConfigMapmetadata:&nbsp;&nbsp;name:&nbsp;argocd-cm&nbsp;&nbsp;namespace:&nbsp;argocddata:&nbsp;&nbsp;timeout.reconciliation:&nbsp;300s&nbsp;&nbsp;# 默认 180","/article/118",305,"2026-01-06 11:49:00","2026-01-06 11:49:34",{"id":312,"category_id":6,"title":313,"keywords":10,"description":314,"image_url":10,"url":315,"hits":316,"is_recommend":15,"is_top":15,"create_time":317,"update_time":318},117,"GitOps 落地实践：ArgoCD + Kustomize 实现声明式基础设施管理(一)","一、概述1.1 背景介绍GitOps 作为云原生时代的运维范式，将 Git 作为基础设施和应用配置的单一事实来源，通过声明式配置和自动化同步机制，实现了配置管理的版本控制、审计追溯和快速回滚。ArgoCD 作为 CNCF 毕业项目，提供了完整的 GitOps 工作流，支持多集群管理、RBAC 权限控制、SSO 集成等企业级特性。结合 Kustomize 的配置管理能力，能够优雅地解决多环境配置差异、敏感信息管理、配置复用等问题。在传统的 CI/CD 流程中，往往由 CI 工具直接执行 kubec","/article/117",310,"2026-01-06 11:45:03","2026-01-06 11:48:56",{"id":320,"category_id":92,"title":321,"keywords":322,"description":323,"image_url":10,"url":324,"hits":325,"is_recommend":15,"is_top":15,"create_time":326,"update_time":327},116,"运维部门年度2025工作总结与2026工作规划应该如何写？","运维部门年度2025工作总结,2026工作规划","2025年，运维部在公司“数字化转型深化”战略引领下，以“稳定为基、效率为纲、安全为盾、创新为翼”为核心导向，全面支撑核心业务系统运行、推动技术架构迭代、强化团队能力建设。 全年实现核心业务系统可用性99.985%，较2024年提升0.02个百分点；故障平均恢复时间（MTTR）从42分钟压缩至29分钟，下降31%；云资源成本同比降低16.8%，自动化运维覆盖率从65%提升至83%，未发生重大生产安全事故，圆满完成年度目标。现将全年工作及2026年规划汇报如下：2025年核心工作成果（数","/article/116",297,"2026-01-06 11:20:58","2026-01-06 11:44:04",{"id":329,"category_id":92,"title":330,"keywords":331,"description":332,"image_url":10,"url":333,"hits":334,"is_recommend":15,"is_top":15,"create_time":335,"update_time":336},115,"Kubernetes 100个常用命令","100 个 Kubectl 命令","这篇文章是关于使用 Kubectl 进行 Kubernetes 诊断的指南。列出了 100 个 Kubectl 命令，这些命令对于诊断 Kubernetes 集群中的问题非常有用。这些问题包括但不限于：•&nbsp;集群信息•&nbsp;Pod 诊断•&nbsp;服务诊断•&nbsp;部署诊断•&nbsp;网络诊断•&nbsp;持久卷和持久卷声明诊断•&nbsp;资源使用情况•&nbsp;安全和授权•&nbsp;节点故障排除•&nbsp;其他诊断命令：文章还提到了许多其他命令，如资源扩展和自动扩","/article/115",3642,"2023-11-02 14:09:30","2023-11-02 14:10:05",{"id":183,"category_id":6,"title":184,"keywords":185,"description":186,"image_url":10,"url":187,"hits":188,"is_recommend":15,"is_top":15,"create_time":189,"update_time":190},1784716029260]