What is Docker?


Docker is a tool specially designed to run applications by using Containers. Containers allow a developer to package of necessary things like libraries and dependencies. Because of the container, the developer can run the application on another Linux machine regardless of any customized setting. Docker is like a virtual machine. But unlike other systems, there is no need to create the whole virtual operating system. Docker allow the developer to use the same Linux kernel for running applications. Only customized applications which are not installed in the system are required to be installed. This improves the performance and reduces the size of application drastically. The most important thing about Docker is open source.

Docker is beneficial for both the system administrator and developers. This can enable the programmer to write the code without worrying about the system compatibility. Also, there are many programs already installed in the Docker. So, it is very useful for a developer. Docker give flexibility to the programmer and reduces the number of the systems needed.


Helpful Docker Tools For Developers

1. Kubernetes

This Docker tool is developed by Google. Firstly Google developed this tool to manage their own LXC containers. Kubernetes is a great tool for implementing the Docker applications. It is best for container deployment also provides the way for the container to communicate with each other.

2. Dockersh

This Dockersh tool is developed by Yelp. Dockersh provide a Docker container to each individual. It behaves like a virtual machine. Users can make changes to their own directories only. Dockersh have used production for depicting the developer ecosystem.

3. Prometheus

This open source Doker monitoring tool is developed by Soundcloud's. It has a microservices architecture which enables the interrelated process to be divided into the more logical domain. But the system can get a bottleneck because of hundreds of microservices.

4. Longspout

A longspout is a great tool for managing logs which are generated by the program running in the container of the Docker. You can route the container-app to a single location like JSON object or endpoint in HTTP. Currently, Long spout is only dealing with stdout and stderr but more versions are expected in near future.


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