Flask uWSGI配置,带烧瓶应用程序
在尝试切换到Nginx时,我遇到了配置问题,并出现了502网关错误。以下是连接时的错误日志:Flask uWSGI配置,带烧瓶应用程序,flask,uwsgi,ubuntu-16.04,systemd,Flask,Uwsgi,Ubuntu 16.04,Systemd,在尝试切换到Nginx时,我遇到了配置问题,并出现了502网关错误。以下是连接时的错误日志: tail -f error.log 2016/10/08 16:09:31 [crit] 21682#21682: *29 connect() to unix:/var/www/FlaskApp/FlaskApp/runserver.sock failed (13: Permission denied) while connecting to upstream, client: 73.188.249.4
tail -f error.log
2016/10/08 16:09:31 [crit] 21682#21682: *29 connect() to unix:/var/www/FlaskApp/FlaskApp/runserver.sock failed (13: Permission denied) while connecting to upstream, client: 73.188.249.47, server: ceejcalvert.com, request: "GET / HTTP/1.1", upstream: "uwsgi://unix:/var/www/FlaskApp/FlaskApp/runserver.sock:", host: "website.com"
如果我在服务器的终端中,我可以通过以下方式手动引导套接字来启动站点:
如果运行以下命令,则此命令将使一切正常工作:
uwsgi -s /var/www/FlaskApp/FlaskApp/runserver.sock -w runserver:app --chmod-socket=666
问题是我无法让它在守护程序模式下工作。我的配置如下:
$ cat /etc/systemd/system/runserver.service
[Unit]
Description=uWSGI instance to serve runserver
After=network.target
[Service]
User=username
Group=www-data
WorkingDirectory=/var/www/FlaskApp/FlaskApp
Environment="PATH=/var/www/FlaskApp/FlaskApp/venv/bin"
ExecStart=/var/www/FlaskApp/FlaskApp/venv/bin/runserver.sock --ini runserver.ini
[Install]
WantedBy=multi-user.target
假设可用站点链接到已启用的站点
cat /etc/nginx/sites-available/runserver
server {
listen 80;
server_name website.com;
location / {
include uwsgi_params;
uwsgi_pass unix:/var/www/FlaskApp/FlaskApp/runserver.sock;
}
}
有什么明显的我遗漏的吗
当我运行以下命令时,我得到退出代码3
sudo systemctl status runserver
runserver.service - uWSGI instance to serve runserver
Loaded: loaded (/etc/systemd/system/runserver.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Sat 2016-10-08 16:08:45 EDT; 20min ago
Main PID: 22365 (code=exited, status=203/EXEC)
Oct 08 16:08:45 FirstNameLastName.com systemd[1]: Stopped uWSGI instance to serve runserver.
Oct 08 16:08:45 FirstNameLastName.com systemd[1]: Started uWSGI instance to serve runserver.
Oct 08 16:08:45 FirstNameLastName.com systemd[1]: runserver.service: Main process exited, code=exited, status=203/EXEC
Oct 08 16:08:45 FirstNameLastName.com systemd[1]: runserver.service: Unit entered failed state.
Oct 08 16:08:45 FirstNameLastName.com systemd[1]: runserver.service: Failed with result 'exit-code'.
我所有的nginx和flask应用程序都使用了这个Docker图像
解决了我的问题。在大多数情况下,我的配置都很好。下面是一份清单,列出了在遇到502个网关错误时要确保的事项 1) 我首先将所有绝对路径添加到配置文件中。例如,我将systemd配置更改为:
$ cat /etc/systemd/system/runserver.service
[Unit]
Description=uWSGI instance to serve runserver
After=network.target
[Service]
User=username
Group=www-data
WorkingDirectory=/var/www/FlaskApp/FlaskApp
Environment="PATH=/var/www/FlaskApp/FlaskApp/venv/bin"
ExecStart=/var/www/FlaskApp/FlaskApp/venv/bin/runserver.sock --ini /var/www/FlaskApp/FlaskApp/runserver.ini
[安装]
WantedBy=multi-user.target
2) 将.ini文件更改为直接调用uWSGI应用程序:
cat /var/www/FlaskApp/FlaskApp/runserver.ini
[uwsgi]
chdir=/var/Webpage/
wsgi-file = wsgi.py
callable = app
master = true
processes = 5
logto = /home/error.log
socket = runserver.sock
chmod-socket = 666
vacuum = true
die-on-term = true
3) 确保FlaskApp主机为0.0.0.0:
if __name__ == "__main__":
app.run(host='0.0.0.0')
4) 使用这些命令尝试找出失败的地方
确保配置具有正确的语法
$ sudo nginx -t
确保nginx守护程序正常运行
$ systemctl status nginx.service
确保服务{app}的uWSGI实例正在运行
$ systemctl
如果一切正常,但仍发现错误,请在中搜索失败
$ sudo journalctl
及
如果一切正常运行,请确保执行以下操作:
$ sudo systemctl restart {app}
$ sudo start {app}
$ sudo enable {app}
最后一个命令是我忘记的,在很长一段时间里,它阻止我意识到我的配置是正确的。在我的例子中,{app}是“runserver”我让docker在本地主机上工作。是否有任何教程可以帮助您展示如何在我的Ubuntu服务器上使用此图像并将其链接到我的域名?您是否尝试过在systemd下运行uWSGI服务的方法?
$ sudo tail -f /var/log/nginx/error.log
$ sudo systemctl restart {app}
$ sudo start {app}
$ sudo enable {app}