flask back-end deployment

Test environment deployment, executed in step

1. Download centos7 Mirror Mirror address DVD version

2. Virtual machine installation centos7, first try to reboot after the installation is complete

       ping www.baidu.com

Ping fails, then, with reference to the method to solve

After you can ping, referring ssh remote connection complete remote connection

tips:

Virtual machine network using NAT mode, remote connectivity tools: MobaXterm

centos ip command to view Bahrain as ip add, will be used when the host virtual machine ping

ssh connection:

```shell
    ssh root@<虚拟机ip>
```

1. Replace download the source station

tips: we downloaded the source station mirrored Ali Ali has always been needed here

1. After replacing the source station first performs

       yum update

2. Installation python3.5.2

tips:

Note look at the version link which version is 3.5.1, 3.5.2 to change

In -s flexible connection command path when a problem with the file path before / usr / local / python3 be /usr/local/python3.5/bin/xxxx, two command lines have changed

Not recommended to use the vi command gedit

vi / usr / libexec / urlgrabber-ext-down the first line of this file should be changed to python2.7

1. yum install mongo look of a first embodiment yum install

2. yum install influxDB

3. Replacing the source station pip install the recommended manner of pip.conf

4. Restore python environment

   The first step: the switching mobaXterm to the / root directory, the directory of the dragged file requirements.txt

   Step two:

       cd $HOME
       pip install -r requirements.txt

5. Turn off the system firewall

service firewalld stop
setenforce 0
vim /etc/selinux/config

The SELINUX = enforcing changed SELINUX = disabled

1. Configuring nginx + uwsgi web back-end test environment

tips: Before doing the following, first with python -V command to ensure python version 3.5

yum install epel-release
yum install python-devel nginx gcc
curl http://uwsgi.it/install | bash -s default /tmp/uwsgi
ln -s /tmp/uwsgi /usr/bin/uwsgi

1. Test nginx + uwsgi + flask available

cd /home/<your_user_path>
mkdir test
cd test
vim test.py

Paste test flask app:

from flask import Flask
app = Flask(__name__)

@app.route("/")
def hello():
    return "<h1 style='color:blue'>Hello There!</h1>"

if __name__ == "__main__":
    app.run(host='0.0.0.0')

vim wsgi.py

Paste the following code:

from myproject import app

if __name__ == "__main__":
    app.run()

Wsgi edit the configuration file:

vim test.ini

Copy the following code and modify <your_user_path>:

[uwsgi]
# uwsgi 启动时所使用的地址与端口
socket = 127.0.0.1:8000
# 指向网站目录
chdir = /home/<your_user_path>/test
# python 启动程序文件
wsgi-file = wsgi.py
# python 程序内用以启动的 application 变量名
callable = app
# 处理器数
processes = 5
# 线程数
threads = 2
#状态检测地址
stats = 127.0.0.1:9191

Write wsgi app backgrounding service files

vim /etc/systemd/system/test.service

Copy the following code and modify <your_user_path>:

[Unit]
Description=uWSGI instance to serve myproject

[Service]
WorkingDirectory=/home/<your_user_path>/test
ExecStart=/usr/bin/uwsgi --ini test.ini

[Install]
WantedBy=multi-user.target

Then execute:

service test start

Nginx configuration change

vim /etc/nginx/nginx.conf

Add and modify <your_user_path> and <virtual machine ip> at http attributes:

    server {
        listen 8888;
        server_name <虚拟机ip>;

        location / {
            include uwsgi_params;
            uwsgi_pass 127.0.0.1:8000;
            uwsgi_param UWSGI_CHDIR  /home/<your_user_path>/test;
            uwsgi_param UWSGI_SCRIPT wsgi:app;
        }
    }

Then execute:

service nginx restart

Finally, native browser to access <virtual machine ip address: 8888>, and finally the deployment is successful display hello there

Basic use mongo Information:

Rookie Tutorial

mongo document

mongo python client rookie Basic Course

PyMongo official documents

influxDB introduction and use of the sample

influxDB Python client

influxDB Python Flask extension

Mongo Python Flask extension

Reference Nginx + uWSGI + Flask