<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>PG管理 on 老冯云数</title><link>https://vonng.com/tags/pg%E7%AE%A1%E7%90%86/</link><description>Recent content in PG管理 on 老冯云数</description><generator>Hugo -- gohugo.io</generator><language>zh-cn</language><managingEditor>rh@vonng.com (冯若航)</managingEditor><webMaster>rh@vonng.com (冯若航)</webMaster><copyright>© 2025 冯若航</copyright><lastBuildDate>Thu, 19 Feb 2026 00:00:00 +0000</lastBuildDate><atom:link href="https://vonng.com/tags/pg%E7%AE%A1%E7%90%86/index.xml" rel="self" type="application/rss+xml"/><item><title>号外：暂缓 PG 最新小版本安装与升级</title><link>https://vonng.com/pg/pg-out-of-sync-202602/</link><pubDate>Thu, 19 Feb 2026 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/pg-out-of-sync-202602/</guid><description>PostgreSQL 18.2 系列小版本引入了 substring 与 WAL 回放相关回归问题，建议暂缓新建与升级，并在 2026-02-26 号外版本发布后尽快更新。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/pg-out-of-sync-202602/featured.webp"/></item><item><title>从PG“断供”看软件供应链中的信任问题</title><link>https://vonng.com/pg/pg-mirror-pigsty/</link><pubDate>Fri, 15 Aug 2025 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/pg-mirror-pigsty/</guid><description>PostgreSQL官方仓库切断全球镜像站同步通道，开源制成品断供，很好的试出了各家数据库厂商和云厂商的成色。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/pg-mirror-pigsty/featured.jpg"/></item><item><title>卡脖子：PGDG切断镜像站同步通道</title><link>https://vonng.com/pg/pg-mirror-break/</link><pubDate>Mon, 07 Jul 2025 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/pg-mirror-break/</guid><description>PGDG 切断 FTP rsync 同步通道，全球镜像站普遍断连，这次还真是卡了一把全球用户的脖子。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/pg-mirror-break/featured.jpg"/></item><item><title>PostgreSQL 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url="https://vonng.com/pg/logical-replication/featured.jpg"/></item><item><title>PG慢查询诊断方法论</title><link>https://vonng.com/pg/slow-query/</link><pubDate>Tue, 23 Feb 2021 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/slow-query/</guid><description>慢查询是在线业务数据库的大敌，本文介绍了使用监控系统定位诊断慢查询的一般方法论。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/slow-query/featured.jpg"/></item><item><title>故障档案：时间回溯导致的Patroni故障</title><link>https://vonng.com/pg/time-travel/</link><pubDate>Mon, 22 Feb 2021 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/time-travel/</guid><description>机器因为故障重启，NTP服务在PG启动后修复了PG的时间，导致Patroni无法启动。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/time-travel/featured.jpg"/></item><item><title>在线修改主键列类型</title><link>https://vonng.com/pg/alter-type/</link><pubDate>Fri, 15 Jan 2021 00:00:00 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(冯若航)</author><guid>https://vonng.com/pg/migrate-column-type/</guid><description>如何在线修改PostgreSQL中的字段类型？一种通用方法。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/migrate-column-type/featured.jpg"/></item><item><title>故障档案：PG安装Extension导致无法连接</title><link>https://vonng.com/pg/extension/</link><pubDate>Thu, 13 Jun 2019 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/extension/</guid><description>今天遇到一个比较有趣的Case，客户报告说数据库连不上了，发现是扩展导致的。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/extension/featured.jpg"/></item><item><title>PostgreSQL 常见复制拓扑方案</title><link>https://vonng.com/pg/replication-plan/</link><pubDate>Fri, 29 Mar 2019 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/replication-plan/</guid><description>复制是系统架构中的核心问题之一。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/replication-plan/featured.jpg"/></item><item><title>温备：使用pg_receivewal</title><link>https://vonng.com/pg/backup-plan/</link><pubDate>Sat, 02 Mar 2019 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/backup-plan/</guid><description>备份有各种各样的策略，物理备份通常可以分为四种。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/backup-plan/featured.jpg"/></item><item><title>故障档案：pg_dump导致的连接池污染</title><link>https://vonng.com/pg/pg-dump-failure/</link><pubDate>Tue, 11 Dec 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/pg-dump-failure/</guid><description>有时候，组件之间的相互作用会以微妙的形式表现出来。例如使用pg_dump从连接池中导出数据，就可能产生连接池污染的问题。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/pg-dump-failure/featured.jpg"/></item><item><title>PostgreSQL数据页面损坏修复</title><link>https://vonng.com/pg/page-corruption/</link><pubDate>Thu, 29 Nov 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/page-corruption/</guid><description>采用二进制编辑的方式修复PostgreSQL数据页，以及如何让一条主键查询出现两条记录来。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/page-corruption/featured.jpg"/></item><item><title>关系膨胀的监控与治理</title><link>https://vonng.com/pg/bloat/</link><pubDate>Sat, 06 Oct 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/bloat/</guid><description>PostgreSQL使用了MVCC作为主要并发控制技术，它有很多好处，但也会带来一些其他的影响，例如关系膨胀。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/bloat/featured.jpg"/></item><item><title>PipelineDB快速上手</title><link>https://vonng.com/pg/pipeline-intro/</link><pubDate>Fri, 07 Sep 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/pipeline-intro/</guid><description>PipelineDB是PostgreSQL的一个扩展插件，提供流式数据处理的相关功能。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/pipeline-intro/featured.jpg"/></item><item><title>TimescaleDB 快速上手</title><link>https://vonng.com/pg/timescale-install/</link><pubDate>Fri, 07 Sep 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/timescale-install/</guid><description>TimescaleDB是PostgreSQL的一个扩展插件，提供时序数据库的一些功能。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/timescale-install/featured.jpg"/></item><item><title>故障档案：PostgreSQL事务号回卷</title><link>https://vonng.com/pg/xid-wrap-around/</link><pubDate>Fri, 20 Jul 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/xid-wrap-around/</guid><description>XID WrapAround也许是PostgreSQL特有的一种故障。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/xid-wrap-around/featured.jpg"/></item><item><title>故障档案：序列号消耗过快导致整型溢出</title><link>https://vonng.com/pg/sequence-overflow/</link><pubDate>Fri, 20 Jul 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/sequence-overflow/</guid><description>如果您在表上用了Interger的序列号，最好还是考虑一下可能溢出的情况。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/sequence-overflow/featured.jpg"/></item><item><title>监控PG中的表大小</title><link>https://vonng.com/pg/mon-table-size/</link><pubDate>Mon, 14 May 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/mon-table-size/</guid><description>PostgreSQL中的表对应着许多物理文件，本文介绍如何统计一张表在PostgreSQL的实际大小。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/mon-table-size/featured.jpg"/></item><item><title>PgAdmin安装配置</title><link>https://vonng.com/pg/pgadmin-install/</link><pubDate>Sat, 14 Apr 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/pgadmin-install/</guid><description>PgAdmin是一个管理PostgreSQL的GUI程序，用python写成，但实在是过于古早，需要一些额外配置。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/pgadmin-install/featured.jpg"/></item><item><title>故障档案：快慢不匀雪崩</title><link>https://vonng.com/pg/download-failure/</link><pubDate>Sun, 08 Apr 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/download-failure/</guid><description>最近发生了一起匪夷所思的故障，某数据库切走了一半的数据量和负载，结果却因为负载变大被打挂了。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/download-failure/featured.jpg"/></item><item><title>Bash与psql小技巧</title><link>https://vonng.com/pg/psql-and-bash/</link><pubDate>Sat, 07 Apr 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/psql-and-bash/</guid><description>一些PostgreSQL与Bash交互的技巧。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/psql-and-bash/featured.jpg"/></item><item><title>PostgreSQL例行维护</title><link>https://vonng.com/pg/routine-maintain/</link><pubDate>Sat, 10 Feb 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/routine-maintain/</guid><description>汽车需要上油，数据库也需要维护保养。对Pg而言，有三项比较重要的维护工作：备份、重整、清理。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/routine-maintain/featured.jpg"/></item><item><title>备份恢复手段概览</title><link>https://vonng.com/pg/backup-overview/</link><pubDate>Fri, 09 Feb 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/backup-overview/</guid><description>备份是DBA的安身立命之本，有备份，就不用慌。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/backup-overview/featured.jpg"/></item><item><title>PgBackRest2中文文档</title><link>https://vonng.com/pg/pgbackrest/</link><pubDate>Wed, 07 Feb 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/pgbackrest/</guid><description>PgBackRest是用perl写的一组PostgreSQL备份工具。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/pgbackrest/featured.jpg"/></item><item><title>Pgbouncer快速上手</title><link>https://vonng.com/pg/pgbouncer-usage/</link><pubDate>Wed, 07 Feb 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/pgbouncer-usage/</guid><description>Pgbouncer是一个轻量级的数据库连接池，这里简单介绍Pgbouncer的配置、管理与使用。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/pgbouncer-usage/featured.jpg"/></item><item><title>PG服务器日志常规配置</title><link>https://vonng.com/pg/logging/</link><pubDate>Tue, 06 Feb 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/logging/</guid><description>建议配置PostgreSQL的日志格式为CSV，方便分析，而且可以直接导入PostgreSQL数据表中。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/logging/featured.jpg"/></item><item><title>空中换引擎：PostgreSQL不停机迁移数据</title><link>https://vonng.com/pg/migration-without-downtime/</link><pubDate>Tue, 06 Feb 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/migration-without-downtime/</guid><description>通常涉及到数据迁移，常规操作都是停服务更新。不停机迁移数据是相对比较高级的操作。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/migration-without-downtime/featured.jpg"/></item><item><title>使用FIO测试磁盘性能</title><link>https://vonng.com/pg/fio/</link><pubDate>Tue, 06 Feb 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/fio/</guid><description>FIO可以很方便地测试磁盘IO性能。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/fio/featured.jpg"/></item><item><title>使用sysbench测试PostgreSQL性能</title><link>https://vonng.com/pg/sysbench/</link><pubDate>Tue, 06 Feb 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/sysbench/</guid><description>尽管PostgreSQL提供了pgbench，但有时候为了吊打一下MySQL，还是需要用到sysbench的。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/sysbench/featured.jpg"/></item><item><title>找出没用过的索引</title><link>https://vonng.com/pg/find-dummy-index/</link><pubDate>Sun, 04 Feb 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/find-dummy-index/</guid><description>索引很有用，但不是免费的。没用到的索引是一种浪费，使用这里的方法找出未使用的索引。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/find-dummy-index/featured.jpg"/></item><item><title>批量配置SSH免密登录</title><link>https://vonng.com/pg/ssh-add-key/</link><pubDate>Sun, 07 Jan 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/ssh-add-key/</guid><description>快速配置所有机器的免密登陆。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://vonng.com/pg/ssh-add-key/featured.jpg"/></item><item><title>Wireshark抓包分析协议</title><link>https://vonng.com/pg/wireshark-capture/</link><pubDate>Fri, 05 Jan 2018 00:00:00 +0000</pubDate><author>rh@vonng.com (冯若航)</author><guid>https://vonng.com/pg/wireshark-capture/</guid><description>Wireshark是一个很有用的工具，特别适合用来分析网络协议，这里简单介绍使用Wireshark抓包分析PostgreSQL协议的方法。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" 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