This document provides instructions for installing and configuring NGINX, uWSGI, Python, and PostgreSQL to run a Django web application on CentOS 7. It involves 9 steps: 1. Installing each component 2. Creating a PostgreSQL database 3. Installing Python libraries 4. Generating a Django project 5. Configuring the Django project to connect to PostgreSQL 6. Starting the Django development server 7. Configuring uWSGI and creating a virtual environment 8. Editing the uWSGI configuration file and creating systemd service files 9. Configuring NGINX as a reverse proxy to route requests to uWSGI

1. NGINX & uWSGI &
PYTHON & PostgreSQL
install Part2
writing by bee

2. Client
http
socket or http
CentOS 7.5(x86_64)
WEB SERVER
(reverse proxy)
test system definition
APLICATION
SERVER

3. ■ Step.1 NGINX Install (1:1.18.0-1.el7.ngx)
■ Step.2 PostgreSQL Install (0:9.2.24-2.el7_7)
■ Step.3 Python Install (3.7.1)
■ Step.4 uWSGI Install (2.0.18)
table of contents
■ Step.5 Create Database
■ Step.6 Install Python library
■ Step.7 Make Django Project
(Check the connection between Django and PosgreSQL)
■ Step.8 Make conection between uWSGI and Django
■ Step.9 Make conection between NGINX and uWSGI

4. [root@cent75 ~]# su – postgres
[root@cent75 ~]# psql -U postgres -c "CREATE DATABASE ¥"BACKEND_SPPF¥" WITH OWNER = ¥"jppf¥" TEMPLATE = template0
ENCODING = 'UTF8' TABLESPACE = pg_default LC_COLLATE = 'C' LC_CTYPE = 'C'“
CREATE DATABASE
[root@cent75 ~]# psql -U jppf BACKEND_SPPF
psql (9.2.24)
"help" でヘルプを表示します.
BACKEND_SPPF=> ¥q
□ Step 5-1 Create Database

5. □ Step 6-1 Install Python library
[root@cent75 ~]# pip install Django==2.2.8
Collecting Django==2.2.8
Using cached Django-2.2.8-py3-none-any.whl (7.5 MB)
Requirement already satisfied: pytz in ./.pyenv/versions/3.7.1/lib/python3.7/site-packages (from Django==2.2.8) (2020.1)
Requirement already satisfied: sqlparse in ./.pyenv/versions/3.7.1/lib/python3.7/site-packages (from Django==2.2.8) (0.3.1)
Installing collected packages: Django
Successfully installed Django-2.2.8
[root@cent75 ~]# pip install psycopg2==2.8.3
Collecting psycopg2==2.8.3
Using cached psycopg2-2.8.3.tar.gz (377 kB)
Building wheels for collected packages: psycopg2
Building wheel for psycopg2 (setup.py) ... done
Created wheel for psycopg2: filename=psycopg2-2.8.3-cp37-cp37m-linux_x86_64.whl size=380257
sha256=938b9a33e77d5dbe5ea46619b83f57892268ba5867f2a792db308e8f425b050c
Stored in directory: /root/.cache/pip/wheels/ab/7f/cb/706413aad012f25a7f06788a24f43b30972d9b481cbb2c7618
Successfully built psycopg2
Installing collected packages: psycopg2
Successfully installed psycopg2-2.8.3

6. □ Step 7-1 Make Django Project
[root@cent75 ~]# mkdir -p /usr/local/sp_pf
[root@cent75 ~]# cd /usr/local/sp_pf
[root@cent75 sp_pf]# django-admin startproject mysite
[root@cent75 sp_pf]# ls mysite/
manage.py mysite
[root@cent75 ~]# cd /usr/local/sp_pf/mysite
[root@cent75 mysite]# vi mysite/settings.py
ALLOWED_HOSTS = ['192.168.1.202', '192.168.1.3', '127.0.0.1', 'localhost']
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql',
'NAME': 'BACKEND_SPPF',
'USER': 'jppf',
'PASSWORD': 'jppf',
'HOST': '127.0.0.1',
'PORT': 5432,
}
}
STATIC_URL = '/mysite_static/'
STATIC_ROOT = ‘mysite_static/'
□ Step 7-2 Modify the Django config file

7. □ Step 7-3 Perform a migration
[root@cent75 mysite]# python manage.py migrate
Operations to perform:
Apply all migrations: admin, auth, contenttypes, sessions
Running migrations:
No migrations to apply.
□ Step 7-4 Create static Objects
[root@cent75 mysite]# python manage.py collectstatic
119 static files copied to '/home2/work1/sp_pf/mysite/mysite_static'.

8. [root@cent75 mysite]# python manage.py runserver 0.0.0.0:8080
Watching for file changes with StatReloader
Performing system checks...
System check identified no issues (0 silenced).
May 16, 2020 - 01:41:20
Django version 2.2.8, using settings 'mysite.settings'
Starting development server at http://0.0.0.0:8080/
Quit the server with CONTROL-C.
□ Step 7-5 Start the application test server.

9. [root@cent75 mysite]# cd /usr/local/sp_pf/mysite
[root@cent75 mysite]# pyenv virtualenv 3.7.1 mysite371
Looking in links: /tmp/tmpnv_187q7
Requirement already satisfied: setuptools in /root/.pyenv/versions/3.7.1/envs/mysite371/lib/python3.7/site-packages (39.0.1)
Requirement already satisfied: pip in /root/.pyenv/versions/3.7.1/envs/mysite371/lib/python3.7/site-packages (10.0.1)
[root@cent75 backend]# cd /usr/local/src/uwsgi-2.0.18
[root@cent75 backend]# pyenv activate mysite371
□ Step 8-1 Make conection between uWSGI and Django
Create a virtual environment.
□ Step 8-2 Make python load module
(mysite371) [root@cent75 uwsgi-2.0.18]# python uwsgiconfig.py --plugin plugins/python core python371
using profile: buildconf/core.ini
detected include path: ['/usr/include', '/usr/local/include']
*** uWSGI building and linking plugin plugins/python ***
[gcc -pthread] ./python371_plugin.so
build time: 3 seconds
*** python371 plugin built and available in ./python371_plugin.so ***
(mysite371) [root@cent75 uwsgi-2.0.18]# mkdir -p /usr/local/sp_pf/plugins
(mysite371) [root@cent75 uwsgi-2.0.18]# mv python371_plugin.so /usr/local/sp_pf/plugins

10. (mysite371) [root@cent75 uwsgi-2.0.18]# mkdir -p /usr/local/sp_pf/socket
(mysite371) [root@cent75 uwsgi-2.0.18]# mkdir -p /usr/local/sp_pf/logs
(mysite371) [root@cent75 uwsgi-2.0.18]# mkdir -p /usr/local/sp_pf/environment/uwsgi-ini
(mysite371) [root@cent75 uwsgi-2.0.18]# vi /usr/local/sp_pf/environment/uwsgi-ini/mysite.ini
[uwsgi]
plugins-dir = /usr/local/sp_pf/plugins
plugins = python371
home = /root/.pyenv/versions/3.7.1/envs/mysite371
socket = /usr/local/sp_pf/socket/mysite.sock
chmod-socket = 666
vacuum = true
chdir = /usr/local/sp_pf/mysite
mount = /mysite=mysite/wsgi.py
manage-script-name = true
logto = /usr/local/sp_pf/logs/uwsgi-mysite.log
processes = 1
threads = 8
master = true
thunder-lock = true
buffer-size = 32768
harakiri = 1500
(sample371) [root@cent75 uwsgi-2.0.18]# pyenv deactivate
□ Step 8-3 Edit the uWSGI server initialization file

11. [root@cent75 mysite]# cd /usr/local/sp_pf/mysite
[root@cent75 mysite]# python manage.py createsuperuser
Username (leave blank to use 'root'): jppf
Email address:
Password: jppfpasswd
Password (again): jppfpasswd
Superuser created successfully.
□ Step 8-4 Create an application admin user
[root@cent75 mysite]# vi /etc/systemd/system/mysite.service
[Unit]
Description=bert service server
[Service]
ExecStart=/usr/local/bin/uwsgi --die-on-term --ini /usr/local/sp_pf/environment/uwsgi-ini/mysite.ini
[Install]
WantedBy=multi-user.target
[root@cent75 mysite]# systemctl enable mysite.service
Created symlink from /etc/systemd/system/multi-user.target.wants/mysite.service to /etc/systemd/system/mysite.service.
□ Step 8-5 Creating system unit files

12. [root@cent75 mysite]# systemctl start mysite
[root@cent75 mysite]# systemctl status mysite
● mysite.service - bert service server
Loaded: loaded (/etc/systemd/system/mysite.service; enabled; vendor preset: disabled)
Active: active (running) since 土 2020-05-16 11:40:52 JST; 1s ago
Main PID: 16760 (uwsgi)
Tasks: 9
CGroup: /system.slice/mysite.service
tq16760 /usr/local/bin/uwsgi --die-on-term --ini /usr/local/sp_pf/environment/uwsgi-ini/mysite.ini
mq16765 /usr/local/bin/uwsgi --die-on-term --ini /usr/local/sp_pf/environment/uwsgi-ini/mysite.ini
5月 16 11:40:52 cent75 systemd[1]: Started bert service server.
5月 16 11:40:52 cent75 uwsgi[16760]: [uWSGI] getting INI configuration from /usr/local/sp_pf/environment/uwsgi-ini/mysite.ini
□ Step 8-6 Startup application server
[root@cent75 mysite]# tail -f /usr/local/sp_pf/logs/uwsgi-mysite.log
your mercy for graceful operations on workers is 60 seconds
mapped 750976 bytes (733 KB) for 8 cores
*** Operational MODE: threaded ***
mounting mysite/wsgi.py on /mysite
WSGI app 0 (mountpoint='/mysite') ready in 0 seconds on interpreter 0x119f8c0 pid: 16760 (default app)
uWSGI running as root, you can use --uid/--gid/--chroot options
*** WARNING: you are running uWSGI as root !!! (use the --uid flag) ***
*** uWSGI is running in multiple interpreter mode ***
spawned uWSGI master process (pid: 16760)
spawned uWSGI worker 1 (pid: 16765, cores: 8)

13. [root@cent75 mysite]# vi /etc/nginx/conf.d/mysite.conf
server {
listen 80;
server_name 192.168.1.202; # <= server ip
# mysite server static
location /mysite/ {
uwsgi_read_timeout 1500;
uwsgi_pass unix:///usr/local/sp_pf/socket/mysite.sock;
include uwsgi_params;
}
# mysite server static
location /mysite_static {
alias /usr/local/sp_pf/mysite/mysite_static;
}
}
□ Step 9-1 Make conection between NGINX and uWSGI

14. URL: http://<server ip>/mysite/admin/
jppf
jppfpasswd