Ubuntu 18.04 installation and deployment of python3, nginx, and flag projects

Enthusiastic citizen Lao Guo 2020-11-11 17:30:14
ubuntu installation deployment python3 python


Yesterday, the server opened a new administrator account , With a weak password , It led to black ,ssh You can't log in , Can't , You can only reinstall the system , Fortunately, there is no important information , There is only one bus running on the server api And blog , The system was re installed in the morning , The environment has been rebuilt , Record .

The server is Tencent cloud , System is ubuntu18.04, Bring their own python2 and python3, My project is based on python3 Of , So you can use it directly .

1. Install dependency packages

sudo apt install python3-pip
sudo apt install build-essential python-dev python-setuptools
sudo apt install build-essential python3-dev python3-setuptools
2. install virtualenv

Virtualenv To create a virtual python Environmental Science , Can be for each Python Applications create independent development environments , So that they don't influence each other ,Virtualenv Able to :

Install new packages without permission

Different applications can use different versions of the suite

Package upgrade does not affect other applications

pip3 install virtualenv
Check whether the installation is successful

virtualenv --version

Installation successful , The next step is to use it , My project is a api service , I put my project files in /opt Next , The file named busAPI, I put all my project files in it

image.png

Installing a virtual environment , Name is venv, You have to go into the project directory ,

virtualenv venv
A new one will be created in the project directory venv Catalog , It's about running python Basic environment tools with instructions and packages . Then enable the environment .

source venv/bin/activate
call activate After the command, before the command (venv) word . It can be done by deactivate Exit virtual environment .

3. Installation project dependencies (Flask frame )

My project file has been uploaded to the directory , But the project dependencies have not been installed yet , Installation dependency , My dependency files

It has been put in requirements.txt In the document ,

pip install -r requirements.txt
This is more convenient to install dependent files , If you rely less , It can be installed one by one .

4. Install and configure uWSGI

At this point, we are already in the virtual environment , Direct installation uWSGI

pip install uwsgi
Create a new directory at the project root config.ini file

vim config.ini
The contents of the document

`[uwsgi]

uwsgi The address and port used when starting

socket = 127.0.0.1:8001

The site directory points to

chdir = /opt/busAPI/

python Start program file

wsgi-file = run.py

python To start in a program application Variable name

callable = app

Number of processors

processes = 4

Number of threads

threads = 2
`

State detection address

stats = 127.0.0.1:9191
The notes are already obvious , Just explain callable=app This app yes run.py A variable in a program file , The type of this variable is Flask Of application class .
image.png

You can run the test

uwsgi config.ini
But it's just a command start form , To make it start with the server and run as a background service is the actual need of the operating environment . So next we need to install another tool to boot uwsgi .

5. install Supervisor

sudo apt-get install supervisor

Supervisor The global configuration file location of is in :

/etc/supervisor/supervisor.conf
Normally, we don't need to make any changes to it , Just add a new *.conf Files in /etc/supervisor/conf.d/ You can just , So we'll create a new one to start busAPI Project uwsgi Of supervisor To configure ( Name it :busAPI.conf):

[program:busAPI]

Start command entry

command=/opt/busAPI/venv/bin/uwsgi /opt/busAPI/config.ini

The directory where the command program is located

directory=/opt/busAPI

The command to run the user name

user=root

autostart=true
autorestart=true

Log address

stdout_logfile=/var/log/uwsgi_supervisor.log

Start and stop services

Start the service

sudo service supervisor star

Termination of services

sudo service supervisor stop

Check the status

sudo service supervisor status
6. install Nginx

sudo apt-get install nginx
To configure Nginx, We modify default This file

/etc/nginx/sites-available/default

The default is 80 port , I didn't use 80, Because applets have to https, So I got it 443 port , Restart the Nginx

sudo service nginx restart
Nginx The service command

start-up

sudo service nginx start

stop it

sudo service nginx stop

restart

sudo service nginx restart

Check the status

sudo service nginx status
7. summary

Record the process from scratch to existence , There are many pits in the middle , But in the end it worked . Sum up , Easy to find later .
Source of the article : Biao Vatican interaction (https://www.biaofun.com/)

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本文为[Enthusiastic citizen Lao Guo]所创,转载请带上原文链接,感谢

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