PostgreSQL-HA 高可用集群在 Rainbond 上的部署方案

version: '3'
services:
  proxy:
    image: goodrain/proxy:latest
    environment:
      - PRIVATE_IP=127.0.0.1
      - PUBLIC_IP=127.0.0.1
      - SERVICE_PORT=5234
      - PROXY_MODE=http
    networks:
      - overlay-net
    restart: always
    labels:
      - "rainbond.app-env=enable"
      - "rainbond.proxy=gr-proxy"
 
  node1:
    image: goodrain.me/pgsql-ha:v1.0.0
    environment:
      - PG_MODE=master
      - CLUSTER_NAME=rainbond-pg
      - PG_DATABASE=rainbond
      - PG_USER=rainbond
      - PG_PASSWORD=rainbond
      - PG_ROOT_PASSWORD=rainbond
      - PG_PRIMARY_HOST=node2
      - PG_REPLICATION_USER=replica
      - PG_REPLICATION_PASSWORD=replica
    networks:
      - overlay-net
    restart: always
    labels:
      - "rainbond.app-env=enable"
      - "rainbond.node=gr-node"
      - "rainbond.cluster-init=true"
 
  node2:
    image: goodrain.me/pgsql-ha:v1.0.0
    environment:
      - PG_MODE=replica
      - CLUSTER_NAME=rainbond-pg
      - PG_DATABASE=rainbond
      - PG_USER=rainbond
      - PG_PASSWORD=rainbond
      - PG_ROOT_PASSWORD=rainbond
      - PG_PRIMARY_HOST=node1
      - PG_REPLICATION_USER=replica
      - PG_REPLICATION_PASSWORD=replica
    networks:
      - overlay-net
    restart: always
    labels:
      - "rainbond.app-env=enable"
      - "rainbond.node=gr-node"
 
networks:
  overlay-net:
    driver: overlay

这个YAML文件定义了一个基于Rainbond的PostgreSQL-HA集群的Docker Compose模板。它包括一个代理服务（proxy）和两个数据库节点（node1和node2），这两个节点配置为主从关系，从而形成一个高可用集群。环境变量被用来配置数据库的各种参数，确保集群的正常运行。这个模板展示了如何在Rainbond平台上部署一个高可用的PostgreSQL集群。