prefect cloud webhook create "my-webhook" --description "From GitHub" --template '{"event":"my.event","resource":{"prefect.resource.id":"my.resource"}}'
    prefect cloud webhook ls

from prefect.blocks.webhook import Webhook

    webhook = Webhook(url="<https://example.com/webhook>", method="POST")
    # inside an async context (e.g., in a flow or task)
    await webhook.call(payload={"text": "Hello from Prefect!"})

docker run -p 6379:6379 --name prefect-redis -d redis:7

# Point Prefect’s messaging to Redis
export PREFECT_MESSAGING_BROKER="prefect_redis.messaging"
export PREFECT_MESSAGING_CACHE="prefect_redis.messaging"
export PREFECT_SERVER_EVENTS_CAUSAL_ORDERING="prefect_redis.ordering"
export PREFECT_SERVER_CONCURRENCY_LEASE_STORAGE="prefect_redis.lease_storage"

# Connection (choose one style)
export PREFECT_REDIS_MESSAGING_URL="<redis://localhost:6379/0>"
# or:
# export PREFECT_REDIS_MESSAGING_HOST="localhost"
# export PREFECT_REDIS_MESSAGING_PORT="6379"
# export PREFECT_REDIS_MESSAGING_DB="0"

# Docket (service coordination); use a different Redis DB index
export PREFECT_SERVER_DOCKET_URL="<redis://localhost:6379/1>"

prefect server start

export PREFECT_API_DATABASE_CONNECTION_URL="<postgresql+asyncpg://user:pass@host:5432/prefect>"
  prefect server start --workers 4

# API only
  prefect server start --no-services
  # Background services (scheduler, automations, late run detection)
  prefect server services start

version: '3.8'
services:
  redis:
    image: redis:7
    ports: ["6379:6379"]

  prefect:
    image: prefecthq/prefect:3-latest
    depends_on: [redis]
    environment:
      PREFECT_MESSAGING_BROKER: prefect_redis.messaging
      PREFECT_MESSAGING_CACHE: prefect_redis.messaging
      PREFECT_SERVER_EVENTS_CAUSAL_ORDERING: prefect_redis.ordering
      PREFECT_SERVER_CONCURRENCY_LEASE_STORAGE: prefect_redis.lease_storage
      PREFECT_REDIS_MESSAGING_URL: <redis://redis:6379/0>
      PREFECT_SERVER_DOCKET_URL: <redis://redis:6379/1>
    command: prefect server start --host 0.0.0.0 --port 4200
    ports: ["4200:4200"]

server {
    listen 80;
    server_name <http://prefect.example.com|prefect.example.com>;

    location /api/ {
      proxy_pass <http://127.0.0.1:4200/api/;>
      proxy_set_header Host $host;
      proxy_set_header X-Forwarded-Proto $scheme;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_http_version 1.1;
      proxy_buffering off;
    }

    location / {
      proxy_pass <http://127.0.0.1:4200/;>
      proxy_set_header Host $host;
      proxy_set_header X-Forwarded-Proto $scheme;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
  }

# 告诉 UI：浏览器应访问哪个 API（必须是外部可达的域名）
  PREFECT_SERVER_UI_API_URL=<https://your.domain.com/api>

  # 可选但推荐：限制 CORS 到你的域名
  PREFECT_SERVER_API_CORS_ALLOWED_ORIGINS=<https://your.domain.com>

  # 服务器监听在容器内的地址与端口
  PREFECT_SERVER_API_HOST=0.0.0.0
  PREFECT_SERVER_API_PORT=4200

PREFECT_API_URL=<https://your.domain.com/api>

curl -i <https://your.domain.com/api/health/ready>

PREFECT_SERVER_UI_API_URL

PREFECT_SERVER_UI_API_URL

docker logs --tail 200 <prefect-server-container>

docker logs -f <prefect-server-container>

docker logs -f <prefect-server-container> | grep -i "error\|exception"

# 提高 Prefect Server 及相关日志级别
  PREFECT_SERVER_LOGGING_LEVEL=DEBUG
  PREFECT_LOGGING_LEVEL=DEBUG

  # 对可重试类错误也打印完整堆栈（如数据库锁/超时等）
  PREFECT_SERVER_LOG_RETRYABLE_ERRORS=true

  # 如需观测 SQL 语句（数据库层面）：
  PREFECT_SERVER_DATABASE_ECHO=true   # 等同于旧名 PREFECT_API_DATABASE_ECHO=true

prefect server start --log-level debug

PREFECT_SERVER_UI_API_URL=<https://你的域名/api>

PREFECT_API_URL=<https://你的域名/api>

curl -i <https://你的域名/api/health/ready>

prefect server database upgrade -y

PREFECT_SERVER_DATABASE_ECHO=true

PREFECT_API_AUTH_STRING

PREFECT_SERVER_API_CORS_ALLOWED_ORIGINS=<https://你的域名>
  PREFECT_SERVER_API_CSRF_PROTECTION_ENABLED=true

prefect work-pool create "ude-local-pool" --type process

prefect work-pool create "ude-local-pool" --type process
  prefect worker start -p "ude-local-pool"

docker logs -f <server 容器>