Loma  Baumbach

Loma Baumbach


Immutable Infrastructure and Image Factories for Fun and Profit

How much time do your teams spend patching vulnerabilities on servers, or puzzling why something failed in production, when it worked just fine in lower environments?

These are classes of problems which are solved without compromise by institutionalizing a pipeline approach called an Image Factory.

First of all… you know all that Chef or Puppet configuration you keep around, and how it nearly always works? Get ready to throw it away. Please.

Every line of configuration you write is a liability and will become technical debt. The less stuff you have, the easier it will be to maintain.

If you have ten services each running on ten instances, then perhaps you will have 100 configurations. Scaling up to 100 instances for each service, you will need 1,000 configurations. With immutable infrastructure, the number of configurations remains ten, whether you have one instance or a thousand.

This is a fundamental part of cattle not pets, because it allows infrastructure to be managed by class rather than by instance.

An Introduction

What’s Immutable Infrastructure?

Immutable infrastructure is like booting a machine from a virtual CD every time. When a piece of software or configuration changes, the CD gets thrown away and an updated disk loaded.

In the ephemeral world of cloud computing, it’s even better: when a piece of software or configuration changes, the whole computer is thrown away and replaced. The same magic holds true when the underlying hardware of a virtual machine is suspect: just terminate it, and another on a healthy host will replace it.

Today convergent (e.g. Chef, Puppet, Ansible, etc.) configuration systems is the mainstream approach to configuration management. It is only somewhat more repeatable than divergent configuration systems because they often rely on non-deterministic package managers. This means that compared to divergent configuration systems (not good) there are fewer holes to create problems, however, it cannot eliminate the potential for divergence, and at scale, these holes amass many perturbations yielding higher probabilities of race conditions and non-deterministic builds. — Susan Potter

This is important, since managing a set of individual servers at scale becomes an exponentially difficult problem to contain.

What’s an Image Factory?

Image for post

Simply put, it’s a piece of software that creates machine images to run on your servers. It works whether the servers are persistent (they run a long time), or ephemeral (they run for an indefinite period of time, and then they are thrown away).

The mechanics of this are simple: create a well-defined image that is tailored specifically for a given class of work, and use it consistently across all environments.

Although image factories don’t have to be used in conjunction with the principle of immutable infrastructure, the two work hand-in-hand and will have a profound effect on trivializing operations.

#ansible #devops #continuous-delivery #aws

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Immutable Infrastructure and Image Factories for Fun and Profit

I am Developer


Laravel 7/6 Image Validation

In this image validation in laravel 7/6, i will share with you how validate image and image file mime type like like jpeg, png, bmp, gif, svg, or webp before uploading image into database and server folder in laravel app.


#laravel image validation #image validation in laravel 7 #laravel image size validation #laravel image upload #laravel image validation max #laravel 6 image validation

Ahebwe  Oscar

Ahebwe Oscar


how to integrate CKEditor in Django

how to integrate CKEditor in Django

Welcome to my Blog, in this article we learn about how to integrate CKEditor in Django and inside this, we enable the image upload button to add an image in the blog from local. When I add a CKEditor first time in my project then it was very difficult for me but now I can easily implement it in my project so you can learn and implement CKEditor in your project easily.

how to integrate CKEditor in Django

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Laravel 7/6 Image Upload Example Tutorial

Laravel image upload example tutorial. Here, i will show you how to upload image in laravel 7/6 with preview and validation.

Before store image into db and folder, you can validate uploaded image by using laravel validation rules. as well as you can show preview of uploaded image in laravel.

Image Upload In Laravel 7/6 with Validation

Image upload in laravel 7/6 with preview and validation. And storage image into folder and MySQL database by using the below steps:

Install Laravel Fresh App
Setup Database Details
Generate Image Migration & Model
Create Image Upload Route
Create Image Controller
Create Image Upload and Preview Blade View
Start Development Server


#laravel 7 image upload example #laravel upload image to database #how to insert image into database in laravel #laravel upload image to storage #laravel image upload tutorial #image upload in laravel 7/6

Lane  Sanford

Lane Sanford


Preprocessing your images for machine learning (image recognition)

During my studies at JKU there was a task for preprocessing images for a machine learning project. It is necessary to clean the raw images before using them in a learning algorithm, so thats why we create a pre-processing function. I think it can be quite useful for others as well so I want to share a bit of my approach. The file is structured in a way that it is easy to understand and also should have a tutorial-like effect.

#image-recognition #image #image-classification #machine-learning #image-processing

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Crop and Resize Image Before Upload In Laravel Using with jQuery Copper JS

Crop and resize image size before upload in laravel using jquery copper js. In this post, i will show you how to crop and resize image size in laravel using jQuery copper js in laravel.

This laravel crop image before upload using cropper js looks like:

laravel crop image before upload

Laravel Crop Image Before Uploading using Cropper js Tutorial

Laravel crop image before upload tutorial, follow the following steps and learn how to use cropper js to crop image before uploading in laravel app:

  • Step 1: Install New Laravel App
  • Step 2: Add Database Details
  • Step 3: Create Migration & Model
  • Step 4: Add Route
  • Step 5: Create Controller By Artisan
  • Step 6: Create Blade View
  • Step 7: Make Upload Directory
  • Step 8: Start Development Server

Read More => https://www.tutsmake.com/laravel-crop-image-before-upload-using-jquery-copper-js/

Live Demo Laravel Crop image Before Upload.

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