# demo/remote

> 使用 INFRA 节点上的 pg_exporter 监控远程 PostgreSQL 与云 RDS 的示例

---

LLMS 索引： [llms.txt](/zh/llms.txt)

---

`demo/remote` 不部署本地 PostgreSQL 集群，而是在 INFRA 节点上声明多个 `pg_exporters`，用于接入远程 PostgreSQL、PolarDB 或云 RDS。


--------

## 配置概览

- 配置名称：`demo/remote`
- 本地节点数量：1 个 INFRA 节点
- Exporter 示例端口：`20001`～`20016`
- 相关文档：[PG Exporter](https://pigsty.cc/docs/pg_exporter/)

```bash
./configure -c demo/remote [-i <infra_ip>]
```


--------

## 配置内容

源文件地址：[`pigsty/conf/demo/remote.yml`](https://github.com/pgsty/pigsty/blob/main/conf/demo/remote.yml)

```yaml
---
#==============================================================#
# File      :   remote.yml
# Desc      :   Monitoring Remote RDS with pigsty
# Ctime     :   2020-05-22
# Mtime     :   2025-12-12
# Docs      :   https://pigsty.io/docs/conf
# License   :   Apache-2.0 @ https://pigsty.io/docs/about/license/
# Copyright :   2018-2026  Ruohang Feng / Vonng (rh@vonng.com)
#==============================================================#

all:
  children:

    infra:            # infra cluster for proxy, monitor, alert, etc..
      hosts: { 10.10.10.10: { infra_seq: 1 } }
      vars:           # install pg_exporter for remote postgres RDS on a group 'infra'
        pg_exporters: # list all remote instances here, alloc a unique unused local port as k
          20001: { pg_cluster: pg-foo, pg_seq: 1, pg_host: 10.10.10.10 }
          20002: { pg_cluster: pg-bar, pg_seq: 1, pg_host: 10.10.10.11 , pg_port: 5432 }
          20003: { pg_cluster: pg-bar, pg_seq: 2, pg_host: 10.10.10.12 , pg_exporter_url: 'postgres://dbuser_monitor:DBUser.Monitor@10.10.10.12:5432/postgres?sslmode=disable'}
          20004: { pg_cluster: pg-bar, pg_seq: 3, pg_host: 10.10.10.13 , pg_monitor_username: dbuser_monitor, pg_monitor_password: DBUser.Monitor }

          20011:
            pg_cluster: pg-polar                        # RDS Cluster Name (Identity, Explicitly Assigned, used as 'cls')
            pg_seq: 1                                   # RDS Instance Seq (Identity, Explicitly Assigned, used as part of 'ins')
            pg_host: pxx.polardbpg.rds.aliyuncs.com     # RDS Host Address
            pg_port: 1921                               # RDS Port
            pg_exporter_include_database: 'test'        # Only monitoring database in this list
            pg_monitor_username: dbuser_monitor         # monitor username, overwrite default
            pg_monitor_password: DBUser_Monitor         # monitor password, overwrite default
            pg_databases: [{ name: test }]              # database to be added to grafana datasource

          20012:
            pg_cluster: pg-polar                        # RDS Cluster Name (Identity, Explicitly Assigned, used as 'cls')
            pg_seq: 2                                   # RDS Instance Seq (Identity, Explicitly Assigned, used as part of 'ins')
            pg_host: pe-xx.polarpgmxs.rds.aliyuncs.com  # RDS Host Address
            pg_port: 1521                               # RDS Port
            pg_databases: [{ name: test }]              # database to be added to grafana datasource

          20014:
            pg_cluster: pg-rds
            pg_seq: 1
            pg_host: pgm-xx.pg.rds.aliyuncs.com
            pg_port: 5432
            pg_exporter_auto_discovery: true
            pg_exporter_include_database: 'rds'
            pg_monitor_username: dbuser_monitor
            pg_monitor_password: DBUser_Monitor
            pg_databases: [ { name: rds } ]

          20015:
            pg_cluster: pg-rdsha
            pg_seq: 1
            pg_host: pgm-2xx8wu.pg.rds.aliyuncs.com
            pg_port: 5432
            pg_exporter_auto_discovery: true
            pg_exporter_include_database: 'rds'
            pg_databases: [{ name: test }, {name: rds}]

          20016:
            pg_cluster: pg-rdsha
            pg_seq: 2
            pg_host: pgr-xx.pg.rds.aliyuncs.com
            pg_exporter_auto_discovery: true
            pg_exporter_include_database: 'rds'
            pg_databases: [{ name: test }, {name: rds}]
  
  
  vars:
    version: v4.5.0                   # pigsty version string
    admin_ip: 10.10.10.10             # admin node ip address
    region: default                   # upstream mirror region: default,china,europe

    #----------------------------------------------#
    # PASSWORD : https://pigsty.io/docs/setup/security/
    #----------------------------------------------#
    grafana_admin_password: pigsty
    grafana_view_password: DBUser.Viewer
    pg_admin_password: DBUser.DBA
    pg_monitor_password: DBUser.Monitor
    pg_replication_password: DBUser.Replicator
    patroni_password: Patroni.API
    haproxy_admin_password: pigsty
    minio_secret_key: S3User.MinIO
    etcd_root_password: Etcd.Root
...
```


--------

## 配置解读

每个 `pg_exporters` 条目使用一个唯一的本地监听端口，并声明远端实例的 `pg_cluster`、`pg_seq`、`pg_host` 与可选连接参数。模板同时展示完整 URL、拆分账号密码、数据库白名单与自动发现等写法。

示例主机名和凭据都是占位值。实际使用时只保留需要的条目，并使用最小权限监控账号；不要把真实 RDS 密码提交到版本库。