Skip to main content

DevOps for Dummies


Everyone talks about it, but not everyone knows what it is.

Why DevOps?

In general, whenever an organization adopts any new technology, methodology, or approach, that adoption has to be driven by a business need.

Any kind of system that need rapid delivery of innovation requires DevOps (development and operations). Why?
  • DevOps requires mechanisms to get fast feedback from all the stakeholders in the software application that's being delivered.
  • DevOps approaches to reduce waste and rework and to shift resources to higher-value activities.
  • DevOps aims to deliver value (of organization or project) faster and more efficiently.

DevOps Capabilities

The capabilities that make up DevOps are a broad set that span the software delivery life cycle. The following picture is a reference architecture which provides a template of a proven solution by using a set of preferred methods and capabilities.
Image result for the devops reference architecture

My Remarks

Okay, that sounds cool. What does it simply mean, again?

The following is a simple case:
- Dev_gap_Ops: you develop and test the system on your test environment but you are not the one test it on real environment. Any updates/hotfixes are operated by other people, not you. That leads some issues such as delay time or misunderstanding between Dev and Ops.
- DevOps: you join both develop and install the system on real environment!

Is that mean a developer should always be a operation/integration guy when applying DevOps?

In my opinion, it must be a dream process but unfortunately, it depends. Due to the laws of some countries, the developers are not able to operate the systems in real environment. For example, some APIs are only exposed in European then Vietnamese developers are not allowed to directly call these APIs rather than European developers.

Therefore, if we understand the issues of Dev and Ops gap, we can figure out the way to adopt DevOps even we are in this kind of case.

Leave your comments about it down below!

Reference

[1]. Sanjeev Sharma and Bernie Coyne, DevOps for Dummies.

Comments

Popular posts from this blog

Set up a web server for learning HTTP headers

Motivation We all follow the client-server model using the HTTP protocol for most of our web apps today. In development, we simply may have a backend API server and a frontend (web pages or mobile apps) only. However, it seemed that a proxy server is always required for production. In fact, most of the hardest issues in production come from integration. The requests and responses might be modified by the proxy server. Therefore, the understanding of HTTP protocol is one of the key skills to resolve those issues. I wanted to dive deep into HTTP with some core concepts such as caching, cookies, and CORS. I didn't intend to go quickly rather than moved slowly to have a well understanding of what I do. Prepare a server The easiest way is to use my laptop as a server then I can just use "localhost". I can also use ngrok to make my web server online. Finally, I use an online tool such as RedBot to check the HTTP headers. To make it more excited though, I deployed the app on A...

What the heck is Meteor DDP?

I was using Meteor for my messenger project. I was so curious about the real time connection. I wanted to know how exactly this mechanism works. In this post, I will go through the DDP Specification, an overview of WebSocket, and a simple demo about how to subscribe a publication of Rocket.Chat (containing a DDP server) from an external webpage. At a glance, I knew that Meteor invented a protocol called DDP which uses for handling real time connection. So then, what is DDP? "DDP (Distributed Data Protocol) is the stateful WebSocket protocol that Meteor uses to communicate between the client and the server." [1] All right! Why does DDP matter? "DDP is a standard way to solve the biggest problem facing client-side JavaScript developers: querying a server-side database, sending the results down to the client, and then pushing changes to the client whenever anything changes in the database" . [2] In order to understand deeply the protocol, I decided ...

Awareness of Product Development

Software development can be understood simply as a program to receive inputs (i.e customer needs) and then produce outputs (i.e working software). It is worth it to know how many steps are in that program. When something gets stuck in a step, everyone is aware of that. The first painting of my son The General Process Big Picture There are two main factors in this picture including the people with roles and their interactions. All people involved in developing the product know their responsibilities clearly and how to make things done right. Therefore, a good collaboration can be reached. Product Roadmap Contribution It would be great for developers to know what the next features to work on are as well as when those features will be delivered. Therefore, the product roadmap is very important. The items in the roadmap should be contributed by ALL people involved in the product. Because software engineers directly develop, test, delivery, and monitor the software, they should also contrib...

Merging source in SVN

My team has used Primefaces for our projects. We sometimes have several branches of the projects with a new Primefaces's release. For example, we currently have a project with two branches, a branch for using Primeface 4.0, a trunk for using Primeface 5.0, and we are working these parallel branches. Our project looks like the following: - myProject - branches + primefaces4 + tag + trunk (primefaces5) My problem is how to copy the same source from the trunk to the branch "primefaces4". That is where SVN Merging can help! Here is the steps those I have conducted in my project. Step 1 : open the project with the branch "primefaces4" Step 2 : Team > Merge... Chose the trunk's URL. For example: http://192.168.9.10/svn/myProject/trunk Step 3 : Select the revision from "trunk" to merge. For example: +--revision--+--date--------+--author----+--comment---+ +  10        + 03.10.2014 + vanhuong   + f1: part 3 + +  9     ...

Make simple music program with beep(freq, duration) with Pascal

Pascal is my first programing language when I have studied in high school. It was really exciting for me. :) The Pascal programming language was created by Niklaus Wirth in 1970. It was named after Blaise Pascal, a famous French Mathematician. It was made as a language to teach programming and to be reliable and efficient. Pascal has since become more than just an academic language and is now used commercially . I tried to make a simple music program by using Lazarus IDE on MS Window 7, 64-bit. It frustrated me a few times how difficulty to use Sound command to make a sound. Sound did not work on my compiler and my platform anymore. So far, I just could use beep(freq, duration) from window unit to implement my work. Here is my code. ;) program mysong; uses Windows, crt; const C: Integer = 512; { x = A * EXP(LN(2)/12)} C_: Integer = 542; D: Integer = 574; D_: Integer = 608; E: Integer = 644; F: Integer = 682; F_: Integer = 723; G: Integer = ...