python批量写入图片到excel中

uvicorn 框架软件编写后发布至ubuntu服务器

uvicorn安装使用

• 1.安装

pip install uvicorn

• 2.main.py编写

from fastapi import FastApi

app = FastApi()


@app.get('/hello')
async def hello():
    return {'message': 'hello World'}

• 3.开发环境运行

if __name__ == '__main__':
    uvicorn.run("main:app", host="127.0.0.1", port=8000, log_level="info")

发布环境部署

• 1.gunicorn安装

pip install uvicorn
pip install gunicorn

• 2.gunicorn.py配置文件编写

import os

# 设置守护进程
daemon=True
# 监听内网端口8000
bind='0.0.0.0:8000'
# 设置进程文件目录
pidfile='./gunicorn.pid'
chdir='./' # 工作目录
# 工作模式
worker_class='uvicorn.workers.UvicornWorker'
# 并行工作进程数 核心数*2+1个
workers=3  #multiprocessing.cpu_count()+1
# 指定每个工作者的线程数
threads=2
# 设置最大并发量
worker_connections = 2000
loglevel='debug' # 错误日志的日志级别
access_log_format = '%(t)s %(p)s %(h)s "%(r)s" %(s)s %(L)s %(b)s %(f)s" "%(a)s"'
# 设置访问日志和错误信息日志路径
log_dir = "./log"
if not os.path.exists(log_dir):
    os.makedirs(log_dir)
accesslog = "./log/gunicorn_access.log"
errorlog = "./log/gunicorn_error.log"

• 3.py文件特殊处理

# 导入OS模块
import os
import sys

# 把当前文件所在文件夹的父文件夹路径加入到PYTHONPATH
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

• 4.服务器运行

gunicorn main:app -c gunicorn.py

抑或

gunicorn main:app -b 0.0.0.0:8000 -w 4 -k uvicorn.workers.UvicornWorker --daemon

项目停止运行

• 1.获取gunicorn进程树

pstree -ap | grep gunicorn

• 2.终止gunicorn任务

kill -HUP 进程pid

• 3.如果使用了多进程，那么执行了上述命令后还会有子进程在运行，可以使用如下命令杀死

kill -9 进程pid

进程脚本杀死

#!/bin/bash
​
# 查找 gunicorn 主进程 PID
gunicorn_pid=$(ps aux | grep 'gunicorn' | grep -v 'grep' | awk '{print $2}')
​
# 如果找到了主进程 PID
if [ -n "$gunicorn_pid" ]; then
  echo "Found gunicorn process: $gunicorn_pid"
  
  # 给主进程发 SIGINT 信号，请求正常停止进程
  kill -INT $gunicorn_pid
  
  # 睡眠 5 秒等待主进程结束 
  sleep 5
  
  # 查找所有 gunicorn 子进程 PID
  gunicorn_child_pids=$(pstree -p $gunicorn_pid | grep -oP '([0-9]+)(?=\))')
  
  # 如果找到了子进程 PID
  if [ -n "$gunicorn_child_pids" ]; then
    echo "Found gunicorn child processes: $gunicorn_child_pids"
    
    # 杀死所有子进程
    for pid in $gunicorn_child_pids; do
      kill -9 $pid
    done
  fi
  
  echo "Stopped gunicorn process and child processes"
  
else
  echo "No running gunicorn process found"
fi

• 脚本执行

chmod 777 stop_gunicorn.sh
bash stop_gunicorn.sh

配置开机自启动服务

配置 gunicorn.service服务开机自启动

cat >/usr/lib/systemd/system/gunicorn.service << EOF
[Unit]
Description=Gunicorn fast
After=syslog.target network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
PIDFile=/var/run/gunicorn.pid
ExecStart=/root/.local/share/virtualenvs/fastapi-Xq8atoqR/bin/gunicorn  -c 
/opt/web/fastapi/gunicorn.py main:app
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s QUIT $MAINPID
PrivateTmp=true
 
[Install]
WantedBy=multi-user.target
 
EOF

依次执行下面命令

systemctl daemon-reload
systemctl enable gunicorn
systemctl start gunicorn

查看服务状态

systemctl status gunicorn

Nginx代理配置

server {
            listen 80;
           # listen 443 ssl;
            server_name api.hmily.vip;
            access_log  /var/log/nginx/access.log;
            location / {
                proxy_pass http://127.0.0.1:8000;
                proxy_set_header Host $host;
                proxy_set_header X-Forwarded-For
                $proxy_add_x_forwarded_for;
        }
    }

nginx配置生效

nginx -s reload

See

• [1].https://zhuanlan.zhihu.com/p/580791329