PostgreSQL Insight Monitor  pgstat pgstat 是一个连接到数据库并获取数据库的活动状态的命令行工具. PostgreSQL有许多状态: archiver for pg_stat_archiver bgwriter for pg_stat_bgwriter connection for connections by type database for pg_stat_database table for pg_stat_all_tables tableio f…

---恢复内容开始--- 安装方法: 1.可以使用操作系统自带的安装源 2.可以使用官网下载的源码进行安装 3.可以使用编译好的包入.run格式的安装包安装(本文使用的是这种安装方法,下载地址http://www.postgres.cn/download) 安装之前首先需要为postgresql数据库新建一个管理员用户: groupadd postgres mkdir /home/postgres useradd postgres -g postgres -s /bin/bash -b /hom…

PostgreSQL Monitor pg_view https://github.com/zalando/pg_view Requirements Linux 2.6, python 2.6, psycopg2, curses 查看系统是否有curses [root@node3 /]# ls /usr/include/ncurses* /usr/include/ncurses_dll.h  /usr/include/ncurses.h 系统已经安装了curses,如果没有下载安装curses…

PostgreSQL Monitor pg_activity Command line tool for PostgreSQL server activity monitoring. https://github.com/julmon/pg_activity/ 依赖的包 python ≥ 2.6 psycopg2 ≥ 2.2.1 psutil ≥ 0.5.1 软件包 Python-2.7.tar.bz2   psycopg2-2.6.1.tar.gz   psutil-3.2.2.tar.gz…

Streaming replication slots are a pending feature in PostgreSQL 9.4, as part of the logical changeset extraction feature. What are they for, what do you need to know, what changes? What are replication slots? Streaming replication slots are a new fac…

PostgreSQL数据库系统的主要功能都集中于Postgres程序,其入口是Main模块中的main函数,在初始化数据集簇,启动数据库服务器是,都将从这里开始执行.Main模块主要的工作时确定当前的操作系统平台,并据此做一些平台相关的环境变量设置和初始化,然后通过对命令行参数的判断,将控制转到相应的模块中去.下图是main函数的调用流程. PostgreSQL系统主函数main的流程 PostgreSQL守护进程Postmaster为用户连接请求分配后台Postgres服务进程,还将启动相关的…

Checkpoints can be a major drag on write-heavy PostgreSQL installations. The first step toward identifying issues in this area is to monitor how often they happen, which just got an easier to use interface added to the database recently. Checkpoints…

After loooong pause, adding next (well, second) post to the “series“. This time, I'd like to describe how logging works. And I don't mean binary logging (WAL), but the log for us, humans, to read. Before I will go to the postgresql.conf options, let…

原文地址:http://www.tomcatexpert.com/blog/2012/12/05/use-spring-insight-developer-analyze-code-install-it-tomcat-and-extend-it-plugins People are still discovering the benefits of the free tool from VMware SpringSource, called Spring Insight Developer. T…

OneAPM 作为应用性能领域的新兴领军企业,近期发布了重量级新产品-- Cloud Insight 数据管理平台,用它能够监控所有基础组件,并通过 tag 标签对数据进行管理. 近日,Cloud Insight (Ci) 探针仪表盘功能重磅上线,默认安装了探针,配置平台服务就会自动生成相应的仪表盘,而且仪表盘将包含所有数据.此外,本文也将重点介绍 Redis 的几项监控指标以及一些值得注意的部分,希望给使用 Redis 的读者带来一些帮助. 仪表盘 任意时间段数据查询 默认只能显示最近一小时的…