在centos7上使用uwsgi部署flask应用
标签：服务器, uwsgi]步骤基本和centos6.5上部署django服务差不多，就是uwsgi会出现各种怪异的问题。 详细记录如下：
安装python-devel
[root@centos7 ~]# yum install python-devel安装pip
[root@centos7 ~]# wget https://bootstrap.pypa.io/get-pip.py
[root@centos7 ~]# python get-pip.py安装uwsgi
[root@centos7 ~]# pip install uwsgi测试uwsgi
新建test.py文件，内容如下
def application(env, start_response):
start_response('200 OK', [('Content-Type','text/html')])
return "Hello World"然后在终端运行：
[root@template ~]# uwsgi --http :8001 --wsgi-file test.py本机访问http://127.0.0.1:8001，看是否有“Hello World”输出
[root@template ~]# curl http://127.0.0.1:8001
[root@template ~]# Hello World部署Flask应用
应用的目录为“/home/nginx/wwwroot” 启动脚本run.py内容为：
#!/usr/bin/env python
# encoding: utf-8
import sys,os
from flask import Flask, session
from app import create_app, db
os.environ["NLS_LANG"] = "SIMPLIFIED CHINESE_CHINA.UTF8"
application = create_app(os.getenv('FLASK_CONFIG', 'default'))
if __name__ == '__main__':
application.run(debug=True,threaded=True)我都uwsgi相关内容放在目录“/etc/uwsgi/”中
# vi /etc/uwsgi/uwsgi.conf内容为：
# uwsgi config file
[uwsgi]
disable-logging = true
daemonize = /etc/uwsgi/uwsgi.log
pidfile = /etc/uwsgi/flask.pid
# Flask config start
socket = 127.0.0.1:44380
pythonpath = /home/nginx/wwwroot
module = run
callable = application
memory-report = true
# Flask config end
# process-related settings
# master
master = true
enable-threads = true
# maximum number of worker processes
listen = 16384
cpu-affinity = 3
processes = 8
#threads = 64
reaper = true
# maximum number of worker processes request with reset
max-requests = 1000
buffer-size=32768
# ... with appropriate permissions - may be needed
chmod-socket = 660
uid = nginx
# clear environment on exit
vacuum = true测试用uwsgi.conf启动uwsgi是否成功
# /usr/bin/uwsgi --ini /etc/uwsgi/uwsgi.conf如果日志“Listen queue size is greater than the system max net.core.somaxconn (128)”的错误， 可以把listen改为128以下，或者修改/etc/sysctl.conf文件，把“max net.core.somaxconn”设置调大。
设置uwsgi的自启动服务
服务脚本
# vi /etc/systemd/system/uwsgi.service内容如下：
[Unit]
Description=The uwsgi server
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
PIDFile=/etc/uwsgi/flask.pid
ExecStart=/usr/bin/uwsgi --ini /etc/uwsgi/uwsgi.conf
ExecReload=/bin/kill -s HUP $MAINPID
KillMode=process
KillSignal=SIGQUIT
TimeoutStopSec=5
PrivateTmp=true
[Install]
WantedBy=multi-user.target启用服务
# systemctl enable uwsgi.service
# systemctl start uwsgi.service整合nginx
参考上一篇文章：在centos7上用源码安装nginx。 修改nginx.conf
location ~/static/ {
root /home/nginx/wwwroot/app;
}
location / {
include /etc/nginx/uwsgi_params;
uwsgi_pass 127.0.0.1:44380;
}
Written on 2017-03-01