A culture known as "DevOps" promotes collaboration between development and operations teams as well as the automation of processes to improve quality and speed of software delivery. In order to balance needs throughout the software development life cycle, from coding and deployment to maintenance and updates, a DevOps engineer introduces processes, tools, and methodologies.
What is the role of a DevOps engineer?
By bridging the gap between the tasks required to quickly alter an application and those that ensure its dependability, DevOps engineers reduce that complexity.
Teams for IT operations and development may have different skill sets and objectives. While operations teams want to maintain an application's stability after it has been released, developers want to add new features to it.
DevOps engineers play a key role in the integration of code, application maintenance, and application management. DevOps is all about the unification and automation of processes. Understanding not only development life cycles but also DevOps culture, including its guiding principles, procedures, and tools, is necessary for all of these tasks.
Developers, system administrators, and programmers may work separately on the same project in an agile environment without exchanging the necessary information to ensure the user receives value.
Since successful DevOps adoption depends on changes to culture and process, some organizations may choose to employ professionals to "perform DevOps" within their workflows, but this could actually widen the gap between development teams and operational teams.
What the distinctions between junior and senior DevOps engineers are, and which essential technical (and non-technical) skills you should concentrate on to advance your career?
The discipline of making sure that all software and hardware assets a company owns are known and tracked at all times, as well as any changes to those assets in the future, is what we mean by configuration management. Configuration management can be compared to a single source of truth for all of your technological assets that is always up to date.
It's more of an art than a science to actually implement this within an I.T. department. The process by which change is introduced, what is actually changed, and how that change may relate to numerous other dependent systems are just a few of the many different aspects that need to be controlled and tracked.
Tasks for Junior DevOps Engineers
Issue: Several monitoring agents must be installed on tens to hundreds of servers.
Solution: You create a powershell or bash script that, given a hostname or hostnames and a set of login credentials, can install and configure the agent. If the installation doesn't go as planned, you log the failure for future reference.
Using a Senior DevOps Engineer
You consider the operating systems and software versions that this specific piece of software requires, and you work to standardize on the bare minimum of supported versions.
You set up the software in base images so that it is preinstalled on new servers by default.
In place of creating a custom script that must be managed and maintained, you use a configuration management tool like Chef or Ansible.
You consider and extrapolate environment variables from the configuration scripts so that modifications to the installation can be tested in beta environments before being applied to hundreds of servers at once.
You use a continuous integration tool to test changes to your code and a source control system, usually GIT-based.
A culture known as "DevOps" promotes collaboration between development and operations teams as well as the automation of processes to improve quality and speed of software delivery.