In this post, we are going to see what is DevOps. This post is divided into multiple sections and each section answers some of the important questions asked by anyone new to DevOps. Without much time delay let us start seeing what is DevOps.
What is DevOps and what do you mean by DevOps?
- To understand what is DevOps, we need to understand what DevOps is not. To begin with, DevOps is not exactly the union of the Developers and the Operations team as a completely new IT role. More importantly, it is not a product and beware of many companies selling products with a logo about terms that are popular and sells it to potential buyers. And also DevOps is also not just a new word. DevOps is a cultural shift adapted in many organizations because it gives real benefits.
- Even if it is a cultural shift DevOps matters because delivering the product to the market, a lesser number of bugs, lower cost to deliver and no vendor locking is giving good results.
How does adapting to DevOps help organizations achieve more benefits? Let us see that.
- Suppose you work in a company whose success heavily relies on the fastest and most reliable delivery of the exciting software products made by the company. Or maybe you work for the company that aspires to be the same. That makes you likely be a developer who writes new products and new features.
- But unfortunately, you have to wait for weeks before your newly written code is placed into production. Though it might seem that this delay increases the relaxation time it actually does not. That is because other companies who are potential competitors will be able to deploy products and features before you. This increases the pressure on you as a developer as you have to ensure that the code is still deployable during deployment and also that the new features are being built daily.
- Adding insult to injury, the common problem with the deployment is the unforeseen errors and bugs that inevitably arrives due to the difference in environments in Development and Production.
- In the same company, there is also an Operations Team. It is the duty of this Operations team member to ensure the 99.9% uptime of the production environment. When the company grows, the number of servers under the company also grows in number. The number of servers that operations team member has to monitor is growing as the company continues to launch new products and more customers consume more services. Even if the new servers were identical it will pose a challenge to the operation team member because they have to track each and every server separately. Certain tools that were effective for maintaining a small number of servers are no longer effective for maintaining this large number of servers. Therefore the efficiency of deploying the new products to the new servers are decreasing.
- When a new product has been released, it requires some amount of managing in order to ensure that the new product works fine in the production environment also. This demands time and therefore the operations team can deploy only one product in one month. And also if there is some problem, the operations team has to diagnose the problem and solve the problem for a code that was not even written by him/her.
- This problem can be solved only when the developer and the operations team work together.
- This is where we define what is DevOps. DevOps means to integrate the development and operations team in order to improve collaboration and productivity by automating infrastructure, automating workflow and continuously measuring the application performance.
- By deploying in small pieces of software with the help of DevOps culture, the team will have a sufficient amount of time to write new software and also test it after each deployment. This provides a way to monitor and software and improve it every day. This also gives them the ability to respond to market needs and bugs that impact the business and the software.
Now that we have understood what is DevOps, let us see what is DevOps in detail in the next topic.
What does a DevOps engineer do?
DevOps engineers try to automate everything. This involves automation of testing of the new code, workflow, Infrastructure preparation and more. It involves the writing the new code in small chunks so that it is deployed in only across hours. Unlike the traditional way of writing the code and deploying it in across months. Also, DevOps engineers ensure that the development and the production environments are similar with the same configuration.
DevOps engineers do not manually write the configuration code and build the infrastructure during the deployment. Instead, they just write the configuration management code that will be used to describe how things should be built. Due to this configuration management code, they will have the ability to use the same management code and deploy it in several other servers that come into production later.
In addition to automating the setup of the production server, the DevOps engineers also help the automation of documentation for all the changes that are made to the code.
The change that the development and the operations team should make is to discipline the process of monitoring and optimization of the code in real-time. Doing this will help the development team and the operations team to understand the performance impact of their changes.
How does DevOps work?
We can list out the benefits of DevOps here:
- Faster time of deployment.
- Helps in focus on the business by automating the infrastructure.
- Faster and better products make customers happier and a happier production team.
What is DevOps principle?
We can say that DevOps is aIl new philosophy that helps software innovate faster and make everything more responsive to business needs. This also enables collaboration between software development and operations.
DevOps comes from the Agile System Administration movement and the Enterprise System Management.
What are DevOps tools?
The following are the important DevOps tools:
- Git and GitHub for source code management and Version Control.
- Jenkins is used for testing and continuous integration.
- Chef, Puppet and Salt Stack are used for configuration management.
- New Relic is used to manage production data.
They have to use new tools such as Jenkins for testing the code. Need a tool for source control such as GitHub. GitHub will allow to manage and document all the changes that they make to the source code. The team should also use tools such as Chef, Puppet, and SaltStack and these tools are for configuration management. These tools will help them automate the deployment process.
They will also require new tools to continuously measure the performance of the deployed application. Tools such as the New Relic will help the team understand the data generated from the thousands of production servers and make useful insights out of it. This will help the team understand how the application is performing and identify the bottlenecks.
Many companies do not know how to use these tools or how to automate them. But they can use RackSpace automation for this
Jenkins is responsible for sending the code for Build and Test. If the build passes the test, it is further sent for deployment
NetFlix has developed the Simian Army as a tool for testing the code and when it identifies the errors the development team will fix it and test it again until the code is deployed.
What skills does DevOps Engineer Need?
How to start the new DevOps oriented progress? Well, that needs a change in the mindset of developers and the operations team members.
The DevOps engineer should have a good idea about both development and operations. The development lifecycle and the important things that should be kept in mind during the operations. From this post, it is clear that the DevOps engineers are people who were already developers or operations team members who have some passion for the other side. The ability to understand both the roles will be required to become an effective DevOps engineer.
Apart from the nature of the background, the willing candidate will require good knowledge in some of the tool used for DevOps. Tools such as
- Jenkins for Continous Integration and testing.
- Rack Space.
- NewRelic and more.
What is DevOps in simple terms?
DevOps is a new culture where the developers and the operation team members work closely together to provide better results. The better results are achieved through faster test results and faster code deployment and the faster and useful feedback to the developer. This is implemented using tools that are important for DevOps such as Jenkins, New Relic, Rack Space and more.
It needs to be kept in mind that DevOps culture draws some of the support from the amount of trust there is between the development team and the operations team.
As said, DevOps is a cultural shift adapted in many organizations because it gives real benefits and this article answers a number of questions related to DevOps such as DevOps Principle and its working and the basic knowledge about DevOps and information related to the DevOps Engineer and its tools.
If you have any doubts, please let us know in the comments below. For more such awesome posts stay tuned to TecKangaroo.
What is Devops
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