Adopting a DevOps approach to application development is all about moving faster. Automating the multitude of processes required during software development and management is a core part of increasing speed and enabling faster development.
As mentioned in the first part of this series, a DevOps toolchain is used to automate the development process. A toolchain is a set of software tools used to perform a complex development task... or to create a software product. The software tools that comprise a toolchain typically are executed sequentially with the output or state of one tool becoming the input for the next, but this is not a hard-and-fast requirement.
A DevOps toolchain therefore is a set of tools that interoperate with one another to aid in the delivery, development, and management of software applications throughout the SDLC. The following components typically are involved in putting together a useful DevOps toolchain.
Orchestration enables the automation of coordinating and managing the SDLC. Whereas automation refers to a single task or capability, orchestration automates a complex, multi-step process. The orchestration tool drives the entire DevOps process. Jenkins is the most popular DevOps orchestration tool.
Continuous Integration (CI) and Continuous Delivery (CD) are important components of the DevOps toolchain. Typically, CI and CD are implemented into collaboration tools that provide a dashboard for integration and delivery of software. Bamboo and Jenkins offers CI and CD capabilities.
Tools that deliver Configuration and Resource Management provide an automated method for maintaining your systems and software infrastructure in a consistent state. This can include servers, storage, networking, and software, with the goal of managing the environment in a known, desired state. Examples of configuration management tools include Chef, Ansible, and Puppet.
Source Control software is used to manage who can change code, who is changing code, and track those changes. It enables developers to work collectively on a complex software project without impacting code changes other developers are making. GitHub is the most popular modern source control tool for DevOps projects.
Collaboration tools aid in the scheduling and tracking of code sprints by delivering transparency to the process for all stakeholders. Many different types of tools can fall into this category, including communication, project management, and service management software. Tools that help developers to catalog and track issues help to speed delivery by improving the response taking corrective action.
Whenever code is being written, it must also be tested. Automated Software Testing tools can improve the speed and quality of software by quickly identifying defects and validating the accuracy of code.
Deployment tools automate the migration and implementation of application code throughout your environments. It facilitates rapid feedback and continuous delivery in agile development while providing the audit trails, versioning and approvals needed in production. A popular deployment tool IBM UrbanCode Deploy is an example of a popular deployment tool for DevOps.
A Container is a standard unit of software that packages up code and all its dependencies so the application runs quickly and reliably from one computing environment to another. Using a container developers can incorporate everything required to run an application to enable it to be portable, without being impacted by differences across multiple environments. Docker is the most popular container software. Kubernetes is frequently used with Docker as a container orchestration system that automates application deployment, scaling, and management.
Monitoring software that can oversee the performance and operation of applications and services is a crucial component of a DevOps pipeline. There are many types of monitoring software including IT infrastructure (operating system, network, and database); the end-user response and experience; and for the performance and functionality of the actual applications themselves.
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