https://cclnice.com/MiloHalo v2.25.4zh-cnSat, 1 Aug 2026 12:48:43 GMThttps://cclnice.com/archives/f5-big-ip-pu-ji-zhi-shi-cong-fan-xiang-dai-li-dao-fu-zai-jun-heng-gao-ke-yong-yu-pai-zhangF5 BIG-IP 常被简称为“F5”，但两者并不完全等价：F5 是厂商，BIG-IP 是其应用交付与安全平台。企业网络中最常见的是 BIG-IP LTM，它位于客户端和业务服务器之间，对进入应用的流量进行接收、检查、调度和转发。 很多人把 F5 简单理解成“硬件负载均衡器”。更准确地说，它是一种应]]>/archives/f5-big-ip-pu-ji-zhi-shi-cong-fan-xiang-dai-li-dao-fu-zai-jun-heng-gao-ke-yong-yu-pai-zhangAdministrator网络与安全Sat, 25 Jul 2026 18:01:14 GMThttps://cclnice.com/archives/vmware-esxi-8-an-zhuang-zhi-nan-ying-jian-jian-rong-qi-dong-pan-wang-luo-pei-zhi-yu-shang-xian-jian-cha]]>/archives/vmware-esxi-8-an-zhuang-zhi-nan-ying-jian-jian-rong-qi-dong-pan-wang-luo-pei-zhi-yu-shang-xian-jian-chaAdministrator云平台与虚拟化Sat, 25 Jul 2026 15:38:57 GMThttps://cclnice.com/archives/docker-wan-zheng-ru-men-an-zhuang-jing-xiang-rong-qi-wang-luo-shu-ju-juan-dockerfile-yu-si-you-cang-kuDocker Engine 通过 dockerd、containerd 和 runc 管理容器。镜像是分层的只读模板，容器是镜像的运行实例；容器隔离依赖 Linux namespaces、cgroups 和安全机制，不等同虚拟机。 ## 安装 生产主机使用 Docker 官方仓库或受支持发行版包，阅]]>/archives/docker-wan-zheng-ru-men-an-zhuang-jing-xiang-rong-qi-wang-luo-shu-ju-juan-dockerfile-yu-si-you-cang-kuAdministrator容器与云原生Sat, 25 Jul 2026 15:38:16 GMThttps://cclnice.com/archives/yun-ping-tai-yu-yun-wei-mian-shi-zhi-nan-linux-wang-luo-shu-ju-ku-rong-qi-ling-xin-ren-he-jia-gou-she-ji运维面试不应只背命令。高质量回答应包含：机制、证据、风险、操作顺序、验证和复盘。 ## Linux 进程 CPU 高：先确认用户影响与范围，再用 top/pidstat/perf 等区分用户态、内核态、I/O 等待、锁竞争和单核热点。内存问题结合 available、RSS、page cache、s]]>/archives/yun-ping-tai-yu-yun-wei-mian-shi-zhi-nan-linux-wang-luo-shu-ju-ku-rong-qi-ling-xin-ren-he-jia-gou-she-jiAdministrator运维面试与成长Sat, 25 Jul 2026 15:37:38 GMThttps://cclnice.com/archives/python-yun-wei-kai-fa-ru-men-ji-chu-yu-fa-xu-ni-huan-jing-pip-yu-an-quan-zi-dong-huaPython 适合 API 调用、数据处理和中等复杂度自动化。学习路线应从数据类型、控制流、函数、异常和模块开始，再进入文件、HTTP、并发和测试。 ## 基础结构 ```python from pathlib import Path def read_hosts(path: str) -> lis]]>/archives/python-yun-wei-kai-fa-ru-men-ji-chu-yu-fa-xu-ni-huan-jing-pip-yu-an-quan-zi-dong-huaAdministratorDevOps 与自动化Sat, 25 Jul 2026 15:36:56 GMThttps://cclnice.com/archives/elastic-stack-ri-zhi-ping-tai-ru-men-elasticsearch-kibana-logstash-yu-elastic-agentElastic Stack 由 Elasticsearch、Kibana 和采集/处理组件组成。现代新部署通常优先使用 Elastic Agent 与 Integrations，Logstash 适合复杂解析、富化和多路输出。 ## 数据链路 应用/主机日志 → Elastic Agent 或 Lo]]>/archives/elastic-stack-ri-zhi-ping-tai-ru-men-elasticsearch-kibana-logstash-yu-elastic-agentAdministrator监控与日志Sat, 25 Jul 2026 15:36:02 GMThttps://cclnice.com/archives/shell-jiao-ben-shi-zhan-yu-an-quan-gui-fan-wen-ben-chu-li-ip-uuid-ti-qu-pi-liang-wang-luo-jian-cha-he-zi-dong-huaShell 适合编排系统命令和轻量自动化，不适合复杂数据模型。原笔记中的空格清理、sed、IP/UUID 提取、网卡、磁盘、MySQL 主从与 SR-IOV 脚本可以统一为一套安全写法。 ## 脚本基线 ```bash #!/usr/bin/env bash set -Eeuo pipefail I]]>/archives/shell-jiao-ben-shi-zhan-yu-an-quan-gui-fan-wen-ben-chu-li-ip-uuid-ti-qu-pi-liang-wang-luo-jian-cha-he-zi-dong-huaAdministratorDevOps 与自动化Sat, 25 Jul 2026 15:35:13 GMThttps://cclnice.com/archives/saltstack-zi-dong-hua-yun-wei-zhi-nan-master-minion-grains-pillar-states-yu-zabbix-bu-shuSaltStack 既支持远程执行，也支持声明式状态管理。Master 接收 Minion 密钥并下发任务；Grains 描述节点事实，Pillar 向目标节点提供受控数据，States 定义期望状态。 ## 安装与信任 当前 Salt 官方推荐 onedir 包。安装后分别配置 master 与]]>/archives/saltstack-zi-dong-hua-yun-wei-zhi-nan-master-minion-grains-pillar-states-yu-zabbix-bu-shuAdministratorDevOps 与自动化Sat, 25 Jul 2026 15:34:27 GMThttps://cclnice.com/archives/grafana-guan-li-yuan-mi-ma-chong-zhi-yu-zhang-hao-an-quan-cli-rong-qi-he-wai-bu-shu-ju-ku-chang-jing忘记 Grafana 管理员密码时，优先使用官方 CLI，不要直接修改数据库哈希。执行前确认实例、配置文件、homepath 和数据库位置，避免误改另一个 SQLite 数据库。 ## 本机安装 ```bash sudo grafana cli --homepath /usr/share/grafa]]>/archives/grafana-guan-li-yuan-mi-ma-chong-zhi-yu-zhang-hao-an-quan-cli-rong-qi-he-wai-bu-shu-ju-ku-chang-jingAdministrator监控与日志Sat, 25 Jul 2026 15:33:42 GMThttps://cclnice.com/archives/ansible-roles-collections-yu-xing-neng-you-hua-gou-jian-ke-fu-yong-zi-dong-hua-xiang-mu当 Playbook 变大后，应按职责拆成 Role，并用 Collection 管理模块、插件和内容依赖。复用不是复制目录，而是定义清晰输入、默认值、依赖和验证方法。 ## Role 结构 ```text roles/web/ ├── defaults/main.yml ├── tasks/mai]]>/archives/ansible-roles-collections-yu-xing-neng-you-hua-gou-jian-ke-fu-yong-zi-dong-hua-xiang-muAdministratorDevOps 与自动化Sat, 25 Jul 2026 15:24:14 GMThttps://cclnice.com/archives/ansible-playbook-jin-jie-bian-liang-mo-ban-handlers-vault-yu-diao-shiPlaybook 用 YAML 描述目标状态。可维护性来自清晰命名、幂等模块、合理变量范围和失败处理，而不是把 shell 脚本逐行搬进 YAML。 ## 基本 Playbook ```yaml - name: Configure web servers hosts: web become: tru]]>/archives/ansible-playbook-jin-jie-bian-liang-mo-ban-handlers-vault-yu-diao-shiAdministratorDevOps 与自动化Sat, 25 Jul 2026 15:23:29 GMThttps://cclnice.com/archives/ansible-ru-men-yu-inventory-zhu-ji-qing-dan-ad-hoc-mo-kuai-he-an-quan-lian-jieAnsible 在控制节点运行，通过 SSH/WinRM 等连接受管节点，默认不要求在目标机安装常驻 Agent。它的价值是使用幂等模块把重复运维操作变成可审计自动化。 ## 项目结构 ```text ansible-project/ ├── ansible.cfg ├── inventories/]]>/archives/ansible-ru-men-yu-inventory-zhu-ji-qing-dan-ad-hoc-mo-kuai-he-an-quan-lian-jieAdministratorDevOps 与自动化Sat, 25 Jul 2026 15:22:49 GMThttps://cclnice.com/archives/redis-yun-wei-yu-mian-shi-he-xin-shu-ju-jie-gou-guo-qi-chi-jiu-hua-gao-ke-yong-he-gu-zhang-pai-cha理解 Redis 不能只背“单线程很快”。命令执行模型、I/O 线程、持久化、复制和集群行为会随版本与配置不同，面试和生产排障都应基于实际指标。 ## 数据结构与场景 String 适合缓存、计数和锁值；Hash 适合对象字段；List 适合简单队列但要注意阻塞与内存；Set 用于去重和集合运算；S]]>/archives/redis-yun-wei-yu-mian-shi-he-xin-shu-ju-jie-gou-guo-qi-chi-jiu-hua-gao-ke-yong-he-gu-zhang-pai-chaAdministrator数据库与中间件Sat, 25 Jul 2026 15:22:00 GMThttps://cclnice.com/archives/redis-cluster-yuan-li-yu-bu-shu-ha-xi-cao-zhu-cong-gu-zhang-zhuan-yi-he-kuo-suo-rongRedis Cluster 将键空间划分为 16384 个 hash slot，并把槽分配给多个主节点。客户端根据 MOVED/ASK 重定向访问正确节点；每个主节点通常配置副本以参与故障转移。 ## 核心概念 键通过 CRC16(key) mod 16384 计算槽。带 hash tag 的键只对]]>/archives/redis-cluster-yuan-li-yu-bu-shu-ha-xi-cao-zhu-cong-gu-zhang-zhuan-yi-he-kuo-suo-rongAdministrator数据库与中间件Sat, 25 Jul 2026 15:21:24 GMThttps://cclnice.com/archives/mysql-8.4-yun-wei-shou-ce-chang-yong-ming-ling-bei-fen-yu-gtid-fu-zhi-yuan-liMySQL 复制不是实时备份。它通过 binary log 把源库事务传到副本并重放，可用于读扩展、故障切换和备份卸载，但误删也会被复制。 ## 常用检查 ```sql SELECT VERSION(); SHOW DATABASES; SHOW PROCESSLIST; SHOW ENGINE I]]>/archives/mysql-8.4-yun-wei-shou-ce-chang-yong-ming-ling-bei-fen-yu-gtid-fu-zhi-yuan-liAdministrator数据库与中间件Sat, 25 Jul 2026 15:20:21 GMThttps://cclnice.com/archives/linux-xing-neng-yu-xi-tong-wei-hu-cpu-nei-cun-i-o-nei-he-sheng-ji-he-bei-fen-hui-fu]]>/archives/linux-xing-neng-yu-xi-tong-wei-hu-cpu-nei-cun-i-o-nei-he-sheng-ji-he-bei-fen-hui-fuAdministratorLinux 与系统运维Sat, 25 Jul 2026 15:19:42 GMThttps://cclnice.com/archives/linux-dns-yu-wang-luo-shi-jian-bind9-dnsmasq-snat-dnat-he-pai-zhangDNS 与 NAT 问题常被误判为应用故障。排查时要区分名称解析、路由、过滤和地址转换四层。 ## DNS 查询链路 ```bash resolvectl status cat /etc/resolv.conf dig example.com dig @DNS_SERVER example.com]]>/archives/linux-dns-yu-wang-luo-shi-jian-bind9-dnsmasq-snat-dnat-he-pai-zhangAdministrator网络与安全Sat, 25 Jul 2026 15:19:07 GMThttps://cclnice.com/archives/linux-ssh-an-quan-jia-gu-mi-yao-deng-lu-shuang-yin-su-ren-zheng-fang-wen-xian-zhi-yu-sheng-ji-jian-cha]]>/archives/linux-ssh-an-quan-jia-gu-mi-yao-deng-lu-shuang-yin-su-ren-zheng-fang-wen-xian-zhi-yu-sheng-ji-jian-chaAdministrator网络与安全Sat, 25 Jul 2026 15:18:30 GMThttps://cclnice.com/archives/linux-fu-wu-guan-li-systemd-ri-zhi-supervisord-yu-ke-kao-qi-ting现代 Linux 服务优先由 systemd 管理。Supervisord 适合管理部分前台进程，但不应与 systemd 重复托管同一个服务。 ## Systemd 常用操作 ```bash systemctl status app.service systemctl start app.serv]]>/archives/linux-fu-wu-guan-li-systemd-ri-zhi-supervisord-yu-ke-kao-qi-tingAdministratorLinux 与系统运维Sat, 25 Jul 2026 15:17:56 GMThttps://cclnice.com/archives/linux-ri-chang-yun-wei-shou-ce-ming-ling-jian-suo-wen-ben-chu-li-yong-hu-ruan-jian-bao-yu-ci-pan]]>/archives/linux-ri-chang-yun-wei-shou-ce-ming-ling-jian-suo-wen-ben-chu-li-yong-hu-ruan-jian-bao-yu-ci-panAdministratorLinux 与系统运维Sat, 25 Jul 2026 15:17:25 GMT