The Twelve Factors

1. Codebase

One codebase tracked in revision control, many deploys

2. Dependencies

Explicitly declare and isolate dependencies

3. Config

Store config in the environment

4. Backing services

Treat backing services as attached resources

5. Build, release, run

Strictly separate build and run stages

6. Processes

Execute the app as one or more stateless processes

7. Port binding

Export services via port binding

8. Concurrency

Scale out via the process model

9. Disposability

Maximize robustness with fast startup and graceful shutdown

10. Dev/prod parity

Keep development, staging, and production as similar as possible

11. Logs

Treat logs as event streams

12. Admin processes

Run admin/management tasks as one-off processes

courtesy of https://12factor.net/

The Twelve-Factor App

Category: Computer Programming Notes

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Tomorrow is Today

January 17, 2017January 17, 2017 Written by Albert

*update. I pinned it as my mantra for these essays. I also removed the last 2 sentences from the excerpt.?I thought they were too dark. Do it now. Tomorrow is never promised. We are now faced with the fact, my friends, that tomorrow is today. We are confronted with the fierce urgency of now. In […]

log files for postgreSQL, Nginx, Django and gunicorn

November 4, 2018November 4, 2018 Written by Albert

postgreSQL :

/var/log/postgresql/postgresql-10-main.log

1	/var/log/postgresql/postgresql-10-main.log

Nginx:

var/log/nginx/access.log

1	var/log/nginx/access.log

Django: Add this first to settings.py

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'filters': {
        'require_debug_false': {
            '()': 'django.utils.log.RequireDebugFalse'
        }
    },
    'handlers': {
        'applogfile': {
          'level':'DEBUG',
          'class':'logging.handlers.RotatingFileHandler',
          'filename': '/var/log/django.log',
          'maxBytes': 1024*1024*15, # 15MB
          'backupCount': 10,
        }
    },
    'loggers': {
        'django.request': {
            'handlers': ['applogfile'],
            'level': 'ERROR',
            'propagate': True,
        },
    }
}

LOGGING = {

'version': 1,

'disable_existing_loggers': False,

'filters': {

'require_debug_false': {

'()': 'django.utils.log.RequireDebugFalse'

}

'handlers': {

'applogfile': {

'level':'DEBUG',

'class':'logging.handlers.RotatingFileHandler',

'filename': '/var/log/django.log',

'maxBytes': 1024*1024*15, # 15MB

'backupCount': 10,

}

'loggers': {

'django.request': {

'handlers': ['applogfile'],

'level': 'ERROR',

'propagate': True,

}

then check here:

'/var/log/django.log

1	'/var/log/django.log

Gunicorn:

/var/log/gunicorn_access.log

1	/var/log/gunicorn_access.log

Use the command cat or tail to see the output.

ubuntu install was painful

January 13, 2017January 13, 2017 Written by Albert

I only slept 2 hours last night. Well I destroyed my Windows system trying to install a dual boot structure. I was planning to toggle between the 2 OS’ . I bought the Lenovo through a craigslist ad. Luckily nothing was installed. I don’t care for windows much. Very unhackily. I might as well dive […]

Ruby Web Scraper Page Metric Script. Using Selenium, Nokogiri and Actionmailer. 1st Version

December 22, 2017December 22, 2017 Written by Albert

It’s ugly for sure. First method has too many lines. I over commented the last 2 blocks. Hacked the last 2 method blocks and integrated with

 def run

def run

method. The comments alone is too much.Useless ‘pp’ gem. If you are a Rubyist you already know what is going on. Ugly Ugly. Poor practices all over the […]