A developer who is at the beginning of your career, programming is fun and challenging a student who will meet their side for the first time, or a person who works together with programmers get a non-technical position, developer operations (developer operations), which is an abbreviation of the term “DevOps", most likely before met you. So about what exactly the term DevOps means it is quite possible that you have an extremely inadequate and vague idea.
What is DevOps and what is it not?
There is not exactly a concrete answer to this question. Even to the Wikipedia page of DEVOPS when you look at it, you will witness that this question is fudged with the following answer, "Academics and experts have come up with a unique definition for the term DevOps they don't put.” What we can definitely say about DevOps is that it is a programming there is no language, framework or platform. DevOps is not a well-defined process or it is not activated using a specific tool. DevOps is just one of them it's not, but it's actually a combination of all of them.
DevOps helps developers to deploy software effectively and securely what is happening is an application and methodology. In this sense, DevOps has also been used with Agile before were compared. Agile also provides tools related to project management, such as DevOps, it is a broad term that covers the entirety of transactions and philosophies.
To understand exactly what DEVOPS is, first of all we need to have a good understanding of how the software is distributed.
Cargo Service for Software
Develops applications on your computer when you start learning to write code for the first time and you make them work. If you are developing a web application, this is "localhost” you run it through and test it. Localhost; your computer's web browser it leads to providing self-access through it (in this article on web applications the same concept that you will focus on, but also for mobile, desktop and other types of applications it will be valid).
Assuming that it is not specially configured for the application you are working on, just and access only through the computer on which you started developing the application you can provide it. This is a pretty cool thing because it allows you to run your applications quickly and you have the opportunity to test. Write your code, save it, reinstall it and refresh the browser. The process is that simple.
So what happens when your application becomes ready to be used by other people as well you will do? Because localhost will no longer be enough for this. Your web application you need to host it on the web server to make it available to other people as well. This is what we really meant when we said “distributing software” before: It works to move a code in the state to a web server that can be accessed.
Distributing Software in Old Ways
To move an application to the server in traditional ways, developers, sys admins working together with other technicians, such as system administrators, also known as need to. The sys admin sets up a server and this server meets the needs of the application configures it in a way to meet the requirements, creates user accounts, packages sets up and configures the necessary settings for external access to the server via web/HTTP makes. Then the sys admin will be added to the server together with the developers of the application by working, you can configure the application's code in such a way that it can be widely accessed. it moves to the web server that has been created.
The mentioned server may be managed by a company, even this server is a company it can even take place in his building. On the other hand, the server can also be rented from a third party or it can also be located in a building completely on the other side of the country. Location of the physical server regardless, the process of moving the code to the server occurs as we described above.
Distributing Software in New Ways
With the development of cloud services, it is also quite important in the management of server resources positive changes have occurred. Now companies; renting huge server machines or instead of buying, which allows a much more flexible distribution of resources It uses cloud services offered by companies such as Amazon Web Services (AWS).
The aforementioned cloud servers are used as a physical server that stands on a shelf in an abstract sense. we can think about it. However, these servers have most of the disadvantages that physical servers have he's eliminating it. Do you want to install a new server? Now this process is an internet it has become easy enough to click on the button on his page. Even the specific application servers that have already been configured to adapt to their groups are a you can even choose it from the menu.
Of course, behind the abstract concept of the cloud, there is also a concrete, real and there are physical servers. But the difference of cloud servers is now that physical server we don't have to deal with the details. Because all of those physical servers are in the cloud it is managed by the companies providing the services.
The development of cloud systems has made a breakthrough in computer services. A basic web there is now a sys for all operations that need to be performed in order to install the application to the server no admin is needed. Thanks to this method, sys admin does not have the knowledge of a even the developer can install his application, following some basic instructions Heroku can install it on services such as Pivotal Cloud Foundry or Azure.
In addition to facilitating the distribution of server resources and the application, the mentioned other advantages of the services are also available. Thanks to these services, many different operations it can be automated because it can be scripted. Set up a new server, this is more so that it has exactly the same configuration as the server you installed first would you like to? You can write a script to do this. A new code every time do you want some actions related to this code to be performed automatically when you type would you like to? You can also write a script for this. The entire distribution process do you want to script? Yes, it is also possible that you can do this. Application distribution to be able to automate the processes that will be repeated continuously during the process by writing scripts It is one of the most important features of DevOps.
Distributing the Code Without Generating a Bug
Scripts, in addition to enabling more consistent deployment operations, constantly do the same because of what they will do, they will also have reduced possible human-caused errors to zero. The new method thanks to it, the application distribution process proceeds much faster and in the old ways in comparison, more frequent applications can be distributed within the same period of time. Fast and apart from easy application deployment, DevOps is also safe and stable for these applications. he also concentrates on distribution in some way. After all, if you mention bugs in an application as for the subject, there is no point in distributing this application quickly.
To prevent bugs, you should both produce good code and test the code you produce well. The testing process is carried out manually by quality control analysts and testers before distribution it can be done as. Or the application by large-scale test scripts it can also be done automatically so that its robustness is tested. Application if you want to use the DevOps method in your deployment, you prefer automated tests it will be more beneficial for you. Automated tests, the risk of human-caused errors reduces and increases efficiency. These tests are also performed on servers with continuous integration automatic task sequences that allow you to make automatic software distribution via it can be integrated. This process, which may sound complicated, is the simplest as follows we can explain:
- The developer writes the code and enters the code into the system.
- The continuous integration server sees this and checks the code.
- The continuous integration server installs the application and then performs its testing.
- If the operation specified in the previous step is successful, the continuous integration server will implement distributes. If this operation fails, the developers will automatically they are informed.
This process is defined as "continuous distribution" and allows companies such as Netflix and Amazon to only help them distribute their code securely hundreds of times in one day OK. So what exactly is the significance of this? Manual deployment without DevOps in a week it was done only once, or even less often. Faster and safer deployment thanks to their methods, software also adapts faster. Thus, the software is more it develops more often in small pieces. Thus, on a larger scale and high manual distributions, which are risky, have become obsolete now.
Must be Adapted for DevOps
In order for the DevOps operations mentioned in the article to be truly effective, developer and sys administrators need to adapt their daily work. Sys in the distribution of an application DevOps specialists can take over the admins' duties. In addition, the developers' codes they should have knowledge about the DevOps principles that will affect.
DevOps experts set up DevOps distribution pipelines for software development teams and it is the engineers who have the task of configuring. Software development processes, together with developers to integrate seamlessly into the configured pipeline they try. Most of these specialists started their career as a developer or sys administrator but medium-high level students who want to focus on automation and quality factors they're technicians. A senior DevOps engineer; the most suitable employee for the DevOps position the candidate, “who writes a script to do the job when faced with a repetitive task he defines himself as a ”person".
Developers also need to improve their understanding of writing code. Each there is no rule that the basis of the code will be suitable for the DevOps method. Automated to ensure that the testing and deployment processes will be effective, while writing code, some factors need to be considered. Some of these factors are; test-based development and 12 to understand the factorial application method. Being familiar with container tools such as Docker is also most often it is a necessary qualification.
If you are a developer, what is meant when the term DevOps is passed is no longer in this article thanks, you can understand. DevOps, the ways of developing and distributing software it is a complex tool that changes permanently and is constantly undergoing development. Anymore since you are in a position to understand this, it is necessary to explain DEVOPS in more detail and more complicated you can start reading the articles prepared in the language. If you are a developer if not, how to develop software as a result of innovations in processes and tools it is now possible for you to understand more clearly that he has changed.