10 critical skills every DevOps engineer
What is DevOps and Why is it important?
DevOps is the combination of Development teams and Operation teams in order to create a business with traditional software development practices. DevOps gaining popularity at a rapid pace. Let's see how DevOps helps the delivery of Software products.
When the development and operational teams are inseparable silos, it makes development life cycles longer due to lack of communication and cooperation between two teams. By merging those two we can make software development shorter cycles.
DevOps is not a profession. It's culture. It builds teams and makes engineers work for a common goal rather than individual performances. This leads to better collaboration and increased efficiency.
More importantly, DevOps reduces rollback failures, Rollbacks and give time to recover. The main characteristic of DevOps. This helps to find bugs and failures quickly giving rise to rectify bugs or recover from failures.
Who is a DevOps Engineer?
There is no definite definition for a DevOps engineer. DevOps engineer is anyone who works in DevOps culture. Well, the primary objective of a DevOps engineer is to oversee the code releases. For that, he will work with software developers, system operators, testers, etc. to be successful DevOps engineer, There are a set of skills that he must possess. The following list will show you what they are.
1. Soft skills and communication
As we say earlier DevOps is trying to combine operation and development. It is obvious, DevOps job requires so much communication.
Empathy is also a good thing that every DevOps engineer should have to be successful. Your empathy will be shown in your team-first mindset. Conflicts and arguments are obvious in any teamwork. This is where your empathy will be tested. You should not let these arguments lead to frustration or pointless anger. Empathy will isolate an argument, therefore, no one will keep personal grudges.
Next important soft skill has DevOps engineer should have is integrity. We know that DevOps is a different culture of traditional software development culture. And DevOps bring together people from various IT sectors together. Therefore you should be honest and genuine with what you are capable of doing. Trust within team members is an important quality required to achieve the goals of DevOps team.
2. Knowledge of source control systems
Source control systems is the main tool behind the collaboration between different developers. As we know by now, DevOps brings together people from different sectors. Therefore, it is quite an obvious source control systems or version control systems plays a major role in any DevOps engineer life. Version control systems are used to track changes in the application. It also maintains different versions of the application. To become comfortable with VCS tools require some effort. They come with their own advantages and disadvantages. It is good for any DevOps developer to keep that in mind.
Following are some reasons for which version control systems are important for DevOps culture.
- It avoids dependency issues in modern containerized applications.
- It directly affects the performance of DevOps
- VCS helps you build more reliable applications.
Any DevOps engineer should have good experience with any of the following tools.
3. Knowledge of continuous integration
The cornerstones of DevOps is Continuous integration. This is shortly called as CI. CI is a set of processes which is part of the Build Pipeline. We learned from the previous paragraph that DevOps use a single version of the system for both the development team and the operational team. What CI does is merging individual developers code to the master copy of the main branch. You can merge any number of times in a day code. That's why we call it continuous integration. Jenkins is a famous tool for CI. every developer should know at least one
4. Knowledge of containers
A lot of people argue that containers and DevOps were built for one another. Container ecosystem has helped the popularity of DevOps immensely. Containers introduced three concepts to DevOps culture; flow, feedback, continual experimentation; which is now considered to be the three pillars of DevOps. Let's have a brief introduction to those three concepts.
A container work as a silo. You can easily forget about the system when you are inside the container. Inside the container, everything will work in an acceptable manner. This is called flow.
Containers are a great way to separate the application while providing a way to ship the environment that allows you to have fast feedbacks from customers.
Containers make the testing much easier.
Docker is a famous container technology that every DevOps engineer should know.
5. Knowledge of infrastructure automation tools
Another key element of DevOps is Automation. You can not think of DevOps without thinking automation. Most of the manual tasks can be automated using Python, Shell, Bash. Automation helps DevOps Engineers to ensure consistent performance. Moreover, It will save a lot of time DevOps engineers which can be spent on more important goals. Therefore the knowledge of Automation is vital for the success of any DevOps engineer.
6. Knowledge of clouds
Competition in the software development world is getting bigger day by day. As a result of that product development and releasing has become highly sophisticated over the last few years. Business agility has reached the key to survive in this competitive market. Most organizations are started using clouds considering many benefits it offers.
Knowledge of cloud has been relevant not only for DevOps but also for software developers. For many organizations, the cloud has been a major part of DevOps culture. Both of them have great potential to offer speed and agility to businesses. The following list will show you 5 benefits using cloud within DevOps culture.
Easy Automation - we learned about automation in the previous paragraph. Cloud makes automation easier.
Cloud-server replication - back up is an integral part of any cloud service. Still, you have to start the servers first and then restore the backup on a different environment.
Orchestration - it is a special way of automation. It is a way of providing complete coordination and control in automation which covers the entire hierarchy in the infrastructure. Some examples of orchestration tools are Chef, Puppet, and Ansible.
Effective Monitoring — Most Cloud Services provides you with tools to monitor your application.
Rapid Deployment - you can find many tools with your cloud provider to deploy your application faster.
It is quite obvious, that knowledge of cloud technology is vital for the success of any DevOps engineer.
7. Knowledge of Security
As I have already mentioned, the primary goal of DevOps is to release codes faster. It is obvious that faster releases lead to vulnerabilities. Data breaches have been the biggest threat to software applications. Therefore, it is the responsibility of the DevOps to protect the applications from attacks. These attacks could vary from SQL injections to XSS attacks to unrecognized attacks. All security threats do not have to be invoked by a human. There could be security pitfalls in the application itself. DevOps should have an idea about all these things. DevOps Engineer does not have a security expert. But having trained in security can help his job greatly.
The main objective of DevOps is to accelerate the delivery of software. But there is no point if there are bugs in whatever you deliver. The quality component is an important factor in any software release. Therefore every DevOps team must adopt continuous testing to their DevOps culture. Therefore, Testing is an important skill for anyone who is going to be a DevOps engineer.
Let's discuss what is testing in a DevOps environment really means. If you consider the top performing DevOps organizations like Amazon and Netflix, they use performance testing, load, automated regression, and security testing. Their goal is to build software quality on DevOps pipeline. So they are ensured to be run on every build. To do such things, obviously, you have a good knowledge of testing.
DevOps engineers do not work for personal goals. They have team goals. Any problem is everyone's problem. DevOps engineers should help to assist coworkers in their troubles. The key is to have empathy towards others. Another point is, DevOps engineers work in small batches from performing code testing. It allows coworkers to do their job easily.
Big picture thinking
DevOps always considers the customer is the most important things. Their purpose is delivering the product for the customer. This requires them to have a big picture of what they should be doing. They have to clearly understand the requirement of the customer. Often, DevOps engineers lack this ability. The main reason for that is, most of the DevOps engineer coming from the software development background. There are not too many who have been practices to become a DevOps engineer. Essentially, there is a gap between software and DevOps engineer. Understanding this gap will help you to do your job successfully. A software developer only has to code what was asked to code. As a DevOps engineer, you should see the bigger picture, which is required to satisfy the customer.
Also, you can take a break from the project to another project. Thinking the bigger picture will help you solve this problem as well.