DevOps Overview
- DevOps is a set of practices that combines software development (Dev) and IT operations (Ops).
- It aims to shorten the systems development life cycle and provide continuous delivery with high software quality.
- DevOps is complementary with Agile software development; several DevOps aspects came from the Agile methodology.
- DevOps as a service approach allows developers and operations teams to take greater control of their applications and infrastructure without hindering speed.
DevOps Toolchains
DevOps is considered a cross-functional mode of working, those who practice the methodology use different sets of tools—referred to as “toolchains” – rather than one.
- Coding
- Building
- Testing
- Packaging
- Releasing
- Configuring
- Monitoring
Containers in DevOps
- A container provides a standard approach to package an application’s source code, configuration files, libraries, and dependencies in a single object.
- Containers, in general, can be used as a single box to run microservices or large software applications.
- Containers assure consistent and reliable deployments.
- Containers are more lightweight and portable, with significantly fewer overheads.
- Containers and virtual machines have similar resource isolation and allocation benefits but function differently because containers virtualize the operating system instead of hardware.
Container Management – Overview
- The process of adding or replacing large numbers of software containers is known as container management.
- Container management includes scheduling, application security, storage, and monitoring.
- To optimize efficiency and streamline container delivery without complex interdependent system architectures, the container management software is sorted after.
- Containers need management for systems to work with higher efficiency.
- If an IT team handles large containers, then a management system is highly recommended.
- Effective and integrated container management makes the environments more secure and benefits developers by giving them the flexibility to develop and deploy new apps and services.
Top 5 Open-Source Container Management Software’s
1. Amazon Elastic Container Service (ECS)
- ECS is used to launch thousands of containers across the cloud using preferred continuous integration and delivery (CI/CD) and automation tools.
- ECS can optimize the time with AWS Fargate serverless compute for containers, which eliminates the need to configure and manage control planes, nodes, and instances.
- It can save up to 50 percent on compute costs with autonomous provisioning, auto-scaling, and pay-as-you-go pricing.
- With ECS in place, integration happens seamlessly with AWS management and governance solutions, standardized for compliance with virtually every regulatory agency around the globe.
2. Kubernetes
- Kubernetes is an open-source container orchestration system for automating software deployment, scaling, and management.
- Kubernetes works with Docker, Containers, and CRI-O.
- Kubernetes defines a set of building blocks that collectively provide mechanisms that deploy, maintain and scale applications based on CPU, memory, or custom metrics.
- The components of Kubernetes can be divided into those that manage an individual node and those that are part of the control plane.
3. Apache Mesos
- Apache Mesos is an open-source project to manage computer clusters.
- It abstracts CPU, memory, storage, and other compute resources away from machines, enabling fault-tolerant and elastic distributed systems to easily be built and run effectively.
- The Mesos kernel runs on every machine and provides applications with API for resource management and scheduling across entire datacentre and cloud environments.
4. Docker
- Docker Business helps organizations build modern applications at scale without compromising security and compliance.
- Docker makes development efficient and predictable.
- It takes away repetitive, mundane configuration tasks and is used throughout the development lifecycle for fast, easy, and portable application development.
5. GitLab
- GitLab is The DevOps platform that empowers organizations to maximize the overall return on software development by delivering software faster and efficiently while strengthening security and compliance.
- It delivers software faster with better security and collaboration in a single platform.
- GitLab works more efficiently by identifying blockers and addressing them immediately, in a single tool.
