What is Docker?
Docker is a containerization platform. Fundamentally, it’s a toolkit that makes it simpler, more secure, and quicker for engineers to build, deploy and manage containers. In spite of the fact that it started as an open-source project, Docker today also refers to Docker, Inc., the organization that produces commercial Docker products. Presently, it is the most famous tool for making containers, regardless of whether developers use Windows, Linux, or MacOS. Some of the tools and terminology related to Docker –
Docker Engine: The runtime environment that permits developers to create and run containers.
Dockerfile: A text document that defines everything needed to assemble a Docker container image, for example, file locations and OS network specification. It’s basically a list of orders that Docker Engine will run to collect the image.
Docker Compose: A tool for characterizing and running multi-container applications. It makes a YAML document to determine the services that the application contains and can be deployed with a single order through the Docker CLI.
Benefits of Docker
Simple configuration
Incorporates and works with existing Docker tools
Permits you to describe your application lifecycle
User can track container versions easily to look at inconsistencies between earlier versions.
Documentation offers every piece of information.
Guarantees that application is isolated
Weaknesses of Docker
Doesn’t give a storage choice
Poor monitoring option
Absence of automatic rescheduling of non-active Nodes
Every action is must be performed in CLI
Manual dealing with multiple instances
Need support for different devices for production aspect – observing, mending, scaling
Complicated manual cluster deployment
What is Kubernetes?
Kubernetes is an open-source platform used to automate the containerized workload management. It automates the load balancing, manages service discovery, tracks resource allocation, and several other activities required for automatic containers deployment.
Benefits of Kubernetes
Easy Organization of service with pods
Holds fast to the principles of an unchanging framework.
Developed by Google having impeccable industry experience
One of the largest Communities among container management tools
Offers different storage alternatives for on-premises SANs and public cloud.
Weaknesses of Kubernetes
Relocating to stateless requires extra efforts
Restricted functionality as per the accessibility in the Docker API.
Profoundly intricate Installation/configuration measures
Not viable existing Docker CLI and Compose tools
Complex automatic scale-up settings and manual cluster deployment
Kubernetes Vs Docker: Difference between Docker and Kubernetes
Some Key Kubernetes and Docker Differences –
Docker Swarm is developed by Docker Inc. and Kubernetes is developed by Google.
Kubernetes supports Auto-scaling while Docker Swarm doesn’t.
Kubernetes can support around 5000 hubs while Docker Swarm can support around 2000 hubs.
Docker Swarm is comprehensive and highly customized whereas Kubernetes is comparatively less extensive and customized.
Kubernetes gives low fault tolerance as compared to Docker.
Comparison Table
Factors | Kubernetes | Docker Swarm |
Developed By | Docker Inc | |
Released Year | 2014 | 2013 |
Scaling | Auto-Scaling | No Auto-Scaling |
Installation | Complex and time taking | Easy and quick |
Load Balancing | Requires manual configure for load balancing setting | Auto load Balancing |
Cluster SetUp | Setting up the cluster requires only two commands | Setting up the cluster is complicated |
Data Volume | Share storage volumes with other containers | Can share storage volumes within multiple containers in the same pod. |
Scalability | Scaling up is slow but guarantees stronger cluster state | Can scale up faster than K8S. Its Cluster strength is not robust |
Optimized for | Multiple small cluster | single large cluster |
Tolerance Ratio | Low fault tolerance rate | High tolerance rate |
Container Limit | Limited to 300000 containers | Limited to 95000 containers |
Public cloud service provider | Google, Azure and AWS | Azure only |
Compatibility | Comprehensive and highly customizable | Less extensive and customizable |
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