pg_stat_monitor pg_stat_statements 的增强扩展

pg_stat_monitor 基于pg_stat_statements 提供了更多的性能监控metrics

参考dockerfile

FROM postgres:12.3 as build

​

LABEL AUTHOR="dalongrong"

​

ENV TZ=Asia/Shanghai 

    LANG=zh_CN.UTF-8

​

RUN set -x 

    && ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone 

    && localedef -i zh_CN -c -f UTF-8 -A /usr/share/locale/locale.alias $LANG 

    && echo 'LANG="$LANG"' > /etc/default/locale 

    && apt-get update 

    && apt-get install -y --no-install-recommends patch ca-certificates git wget unzip make postgresql-server-dev-"${PG_MAJOR}" gcc libc6-dev libssl-dev libkrb5-dev libaio1  gnupg 

    && wget -O /tmp/REL0_7_1.tar.gz  https://github.com/percona/pg_stat_monitor/archive/REL0_7_1.tar.gz 

    && cd /tmp && tar xvzf  REL0_7_1.tar.gz 

    && cd /tmp/pg_stat_monitor-REL0_7_1 

    && make USE_PGXS=1 install 

    && apt-get autoremove 

    && apt-get autoclean 

    && rm -rf /var/lib/apt/lists/* 

    && rm -rf /tmp/*

​

FROM postgres:12.3

COPY --from=build /usr/lib/postgresql/12/lib/pg_stat_monitor.so /usr/lib/postgresql/12/lib/pg_stat_monitor.so

COPY --from=build /usr/lib/postgresql/12/lib/bitcode/pg_stat_monitor  /usr/lib/postgresql/12/lib/bitcode/pg_stat_monitor

COPY --from=build /usr/share/postgresql/12/extension/pg_stat_monitor.control  /usr/share/postgresql/12/extension/pg_stat_monitor.control

COPY --from=build /usr/share/postgresql/12/extension/pg_stat_monitor--1.0.sql  /usr/share/postgresql/12/extension/pg_stat_monitor--1.0.sql

使用(需要重启)

• 启动时候配置

# - Shared Library Preloading -

​

shared_preload_libraries = 'pg_stat_monitor' # (change requires restart)

#local_preload_libraries = ''

#session_preload_libraries = '

• 运行时配置

ALTER SYSTEM SET shared_preload_libraries = 'pg_stat_monitor';

• 查询效果

说明

pg_stat_monitor 是比pg_stat_statements更加强大的一个pg 分析工具，很值得使用

参考资料

https://github.com/percona/pg_stat_monitor/blob/master/docs/USER_GUIDE.md
https://github.com/percona/pg_stat_monitor