nginx+uwsgi+supervisor快餐部署

需要文件

Miniconda3-latest-Linux-x86_64.sh，下载地址

安装Nginx

• 执行yum install -y yum-utils
• 在/etc/yum.repos.d创建nginx.repo，并添加如下内容

  [nginx-stable]
  name=nginx stable repo
  baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
  gpgcheck=1
  enabled=1
  gpgkey=https://nginx.org/keys/nginx_signing.key
  module_hotfixes=true
  
  [nginx-mainline]
  name=nginx mainline repo
  baseurl=http://nginx.org/packages/mainline/centos/$releasever/$basearch/
  gpgcheck=1
  enabled=0
  gpgkey=https://nginx.org/keys/nginx_signing.key
  module_hotfixes=true
  

• 执行yum install -y nginx

安装Miniconda

• chmod u+x Miniconda3-latest-Linux-x86_64.sh
• 执行Miniconda3-latest-Linux-x86_64.sh，并根据提示完成安装
• 在用户home目录创建.condarc文件，也可通过conda config命令创建
• 在.condarc文件中添加如下内容

  show_channel_urls: true
  channels:
    - defaults
    - conda-forge
  default_channels:
    - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
    - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free
    - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r
    - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/pro
    - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/msys2
  custom_channels:
    conda-forge: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
    msys2: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
    bioconda: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
    menpo: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
    pytorch: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
    simpleitk: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  

• 执行conda create -n flask python=3.7.3 pylint requests flask libiconv创建虚拟环境。若没有安装libiconv会报如下错误：
  uwsgi: error while loading shared libraries: libiconv.so.2: cannot open shared object file: No such file or directory

配置uWSGI

• 在虚拟环境中执行conda install -y uwsgi
• 上传项目文件，在项目目录（本文为/home/flask/FlaskTest）中创建uwsgi.ini，并添加如下内容（删除注释）。

  [uwsgi]
  socket = 127.0.0.1:8001    //与nginx通信的端口
  chdir = /home/flask/FlaskTest/    //你的Flask项目目录
  wsgi-file = hello.py    //项目启动文件
  callable = app      //hello.py文件中flask实例化的对象名
  processes = 1     //处理器个数
  threads = 1     //线程个数
  stats = 127.0.0.1:9191   //获取uwsgi统计信息的服务地址
  

• 在.bash_profile中增加export FLASK_ENV='production'
• 代码DEBUG配置项改为False
• 在虚拟环境中执行uwsgi uwsgi.ini可在控制台上启动应用。验证uwsgi.ini配置。

配置supervisor

• 在虚拟环境中执行conda install -y supervisor
• 创建/home/flask/supervisor目录
• 执行echo_supervisord_conf > /home/flask/supervisor//supervisord.conf生成配置文件模板
• 修改配置文件如下所示

  [unix_http_server]
  file=/home/flask/supervisor/supervisor.sock
  
  [supervisord]
  logfile=/home/flask/supervisor/supervisord.log
  logfile_maxbytes=50MB
  logfile_backups=10
  loglevel=info
  pidfile=/home/flask/supervisor/supervisord.pid
  nodaemon=false
  minfds=1024
  minprocs=200
  
  [rpcinterface:supervisor]
  supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
  
  [supervisorctl]
  serverurl=unix:///home/flask/supervisor/supervisor.sock
  
  [program:flask]
  command=/home/flask/miniconda3/envs/flask/bin/uwsgi /home/flask/FlaskTest/uwsgi.ini
  directory=/home/flask/FlaskTest
  autostart=true
  startretries=3
  user=flask
  

• 执行supervisord -c /home/flask/supervisor/supervisord.conf使用指定配置文件启动
• 执行supervisorctl -c /home/flask/supervisor/supervisord.conf进入控制台，可查看程序状态、更新配置文件等

配置Nginx

• 进入/etc/nginx/conf.d目录
• 创建flask.conf文件，并添加如下内容

  server {
      listen 80;
      root /home/flask/FlaskTest;
      server_name localhost;
      location / {
          proxy_set_header x-Real-IP $remote_addr;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_set_header Host $http_host;
          include uwsgi_params;
          uwsgi_pass localhost:8001;
      }
  }
  

• 执行nginx -s reload重载配置
• Nginx常用命令
  • nginx — start nginx
  • nginx -s stop — fast shutdown
  • nginx -s quit — graceful shutdown
  • nginx -s reload — reloading the configuration file
  • nginx -s reopen — reopening the log files

测试

在浏览器中输入服务器地址，结果如下

测试结果