Discourse Docker 服务无法正常启动

安装
1

我想在本地试用 Discourse，于是使用了 Docker Compose 尝试搭建：

version: '3.8'

services:
  postgres:
    image: pgvector/pgvector:pg17
    container_name: discourse-postgres
    restart: always
    environment:
      POSTGRES_USER: discourse
      POSTGRES_PASSWORD: discourse
      POSTGRES_DB: discourse
      # 确保扩展能正常加载
      # POSTGRES_INITDB_ARGS: "--enable-extensions=vector"
    volumes:
      - ./data/postgres:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U discourse && psql -U discourse -c 'SELECT * FROM pg_extension WHERE extname = ''vector'';'"]
      interval: 10s
      timeout: 5s
      retries: 5

  redis:
    image: redis:7-alpine
    container_name: discourse-redis
    restart: always
    volumes:
      - ./data/redis:/data
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 10s
      timeout: 5s
      retries: 5

  discourse:
    image: discourse/discourse:stable
    container_name: discourse-app
    restart: always
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
    ports:
      - "80:80"
    environment:
      DISCOURSE_DB_HOST: postgres
      DISCOURSE_DB_USER: discourse
      DISCOURSE_DB_PASSWORD: discourse
      DISCOURSE_REDIS_HOST: redis
      DISCOURSE_DEVELOPER_EMAILS: "admin@example.com"
      DISCOURSE_HOSTNAME: "localhost"
      # 临时SMTP配置（启动后需修改为真实值）
      DISCOURSE_SMTP_ADDRESS: "smtp.example.com"
      DISCOURSE_SMTP_PORT: 587
      DISCOURSE_SMTP_USER_NAME: "admin@example.com"
      DISCOURSE_SMTP_PASSWORD: "password"
      # 可选：禁用不必要的AI功能，减少扩展依赖（如需）
      DISCOURSE_DISABLE_VECTOR_SEARCH: "true"
    volumes:
      - ./data/discourse:/var/www/discourse/shared

但是遇到了阻碍我体验 Discourse 论坛的问题：

discourse-postgres  | 2026-01-20 09:19:47.774 UTC [140] ERROR:  column "vector" does not exist at character 44
discourse-postgres  | 2026-01-20 09:19:47.774 UTC [140] STATEMENT:  SELECT * FROM pg_extension WHERE extname = vector;

不知道是什么原因，有老手能指导吗？

2

这不是一个 #bug。这不是受支持的本地安装。请参阅 dev-install

2 个赞
3

您需要 postgres 的 pgvector 扩展。此外，没有 https，Discourse 将无法运行。如果您真的想进行本地安装，您应该使用开发人员安装。