因為odyssey 相容pgbouncer，我們可以直接使用pgbouncer的exporter

環境準備

• docker-compose 檔案

version: "3"

services:

 postgres:

  image: postgres:12

  ports:

   - "5432:5432"

  environment:

   - "POSTGRES_PASSWORD=dalong"

 pgbouncer:

  image: brainsam/pgbouncer

  ports:

   - "6543:6543"

  volumes:
 

   - "./pgbouncer.ini:/etc/pgbouncer/pgbouncer.ini"

   - "./users.txt:/opt/auth/users.txt"

 app:

  image: kksudo/odyssey-docker:1.1

  ports:

   - "6432:6432"

  volumes:

   - "./odyssey-dev.conf:/etc/odyssey/odyssey.conf"

 prom1:

  image: dalongrong/pgbouncer_exporter:v0.4.1

  ports:

  - "9127:9127"
 

  command: --pgBouncer.connectionString="postgres://postgres:dalong@pgbouncer:6543/pgbouncer?sslmode=disable"

 prom2:

  image: dalongrong/pgbouncer_exporter:v0.4.1

  ports:

  - "9128:9127"

  command: --pgBouncer.connectionString="postgres://postgres:dalong@app:6432/console?sslmode=disable"

• 效果

說明

pgbouncer的exporter 目前新版本的比較少，我基於原始碼構建提供了一個版本的容器映象
操作方法

git clone https://github.com/prometheus-community/pgbouncer_exporter.git

make build

Dockerfile

FROM debian:stretch-slim

COPY pgbouncer_exporter /bin/pgbouncer_exporter

ENTRYPOINT [ "/bin/pgbouncer_exporter" ]

參考資料

https://github.com/prometheus-community/pgbouncer_exporter
https://github.com/yandex/odyssey
https://github.com/rongfengliang/postgres-connect-pool-tools-learning