docker+fastapi+Gunicorn+APScheduler部署定时服务和定时器任务重复的问题

Gunicorn会启动多个work，每个work都会启动一个定时器所以会出现多个一摸一样的任务还会同时运行。

解决思路：让Gunicorn启动一个work

方法一：dockerfie中配置环境变量

#Dockerfile
ENV MAX_WORKERS=1

方法二：
修改gunicorn_conf.py文件
把容器中的gunicorn_conf.py复制到项目根目录修改即可生效

import json
import multiprocessing
import os

workers_per_core_str = os.getenv("WORKERS_PER_CORE", "1")

# 开启多个work 会导致定时任务实例化多次，这里作为服务只需要一个work
# max_workers_str = os.getenv("MAX_WORKERS")
max_workers_str = 1

use_max_workers = None
if max_workers_str:
    use_max_workers = int(max_workers_str)
web_concurrency_str = os.getenv("WEB_CONCURRENCY", None)

host = os.getenv("HOST", "0.0.0.0")
port = os.getenv("PORT", "80")
bind_env = os.getenv("BIND", None)
use_loglevel = os.getenv("LOG_LEVEL", "info")
if bind_env:
    use_bind = bind_env
else:
    use_bind = f"{host}:{port}"

cores = multiprocessing.cpu_count()
workers_per_core = float(workers_per_core_str)
default_web_concurrency = workers_per_core * cores
if web_concurrency_str:
    web_concurrency = int(web_concurrency_str)
    assert web_concurrency > 0
else:
    web_concurrency = max(int(default_web_concurrency), 2)
    if use_max_workers:
        web_concurrency = min(web_concurrency, use_max_workers)
accesslog_var = os.getenv("ACCESS_LOG", "-")
use_accesslog = accesslog_var or None
errorlog_var = os.getenv("ERROR_LOG", "-")
use_errorlog = errorlog_var or None
graceful_timeout_str = os.getenv("GRACEFUL_TIMEOUT", "120")
timeout_str = os.getenv("TIMEOUT", "120")
keepalive_str = os.getenv("KEEP_ALIVE", "5")

# Gunicorn config variables
loglevel = use_loglevel
workers = web_concurrency
bind = use_bind
errorlog = use_errorlog
worker_tmp_dir = "/dev/shm"
accesslog = use_accesslog
graceful_timeout = int(graceful_timeout_str)
timeout = int(timeout_str)
keepalive = int(keepalive_str)

# For debugging and testing
log_data = {
    "loglevel": loglevel,
    "workers": workers,
    "bind": bind,
    "graceful_timeout": graceful_timeout,
    "timeout": timeout,
    "keepalive": keepalive,
    "errorlog": errorlog,
    "accesslog": accesslog,
    # Additional, non-gunicorn variables
    "workers_per_core": workers_per_core,
    "use_max_workers": use_max_workers,
    "host": host,
    "port": port,
}
print(json.dumps(log_data))

以上方法适用于这个方法产生的docker容器
Docker部署FastApi详解，这一篇就够了添加链接描述

两个方法使用一个即可。
不想只产生一个work的可以试一下文件锁。