LXD vs Docker

System containers are analogous to virtualized or tangible machines (as operated by LXD). They have a complete operating system, allow you to execute any kind of task, and can be managed just like a virtual or physical computer. You might host several apps inside of a solitary system container because they are typically durable containers. Process containers, commonly referred to as application containers, are containers that package and operate a singular process or service per container (like Docker). They perform transitory workloads of the stateless variety. In this article, we will dive deeper into LXD vs Docker and attempt to understand what differentiates the two technologies.

What is LXD?

For Linux Containers, LXD is an open source container management extension. In addition to offering additional functions and features for creating and managing Linux containers, LXD enhances existing LXC functionalities.

Via the liblxc library, LXD, a representational state transfer application programming interface (REST API), interacts with LXC. In order to facilitate quicker container formation and operation, LXD additionally offers a system daemon that programmes can utilise to manage LXC.

What is Docker?

It is an open source containerization platform. Using containers, which are standardised executable components integrating application source code with the operating system libraries and dependencies necessary to execute that code in any context, helps developers to package applications. Containers make it easier to deploy distributed applications, and as businesses move toward cloud-native production and hybrid multi cloud setups, they are gaining popularity.

Although Docker is not required to build containers, the platform does simplify things, making it secure, and easier to create, launch, and handle containers. In essence, Docker is a toolbox that allows programmers to create, deploy, launch, operate, update, and terminate containers using basic commands and labour-saving automation through a single API.

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LXD vs Docker

An improved user interface is offered by LXD, a next-generation container management solution built atop LXC (Linux Containers). The core of LXD is the powerful daemon. Utilising a local Unix socket or a network connection, we can communicate with the daemon with the use of the REST API.

Docker is a container runtime program. Applications are executed as containers using an image that contains all necessary dependencies and libraries. Additionally, Docker CLI manages its object utilising the REST API.

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Difference between LXD & Docker

Platform

LXD: Only Linux distributions, not Windows, can run LXD. Nothing comparable to Windows or Linux containers exists on Windows. 

Docker: Docker can now work on Linux and also Windows and is platform-independent. Furthermore, the Docker daemon generates a tiny Linux virtual machine in the background and executes the Linux application there as a container if anybody wishes to execute a Linux application on Windows.

Integration

LXD: To handle LXC compute nodes, LXD can integrate with OpenStack and OpenNebula.

Docker: To orchestrate the containers and offer fault tolerance, we can integrate Kubernetes with Docker. Jenkins and Docker can be integrated to build CI/CD pipelines for quicker deployment.

Process Management

LXD: LXD can operate a container with a normal init function and many programs simultaneously inside of it. One container can be used to execute a LAMP server, which stands for Linux, Apache, MySQL, and PHP. 

Docker: In Docker, we only execute one process per container. This implies that if an app needs to execute a certain number of concurrent processes, a certain number of containers, each running a different process, must also be running.

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State Management

LXD: The cloud vendor can offer a personalised container using LXD that feels like a full-fledged OS but is less expensive than a VM, spins up rapidly, and has the persistent data we require. 

Docker: Since Docker does not enable persistent storage, adjustments introduced on the inside of a container remain there till either committed as a Docker Image or the container is removed or demolished. Conversely, there are ways of keeping data persistently while executing the containers via volumes or bind mounts.

Portability

LXD: Due to its greater resemblance to a full Operating System environment with associated network and storage interfaces, LXD is much less portable than Docker. It is even feasible to execute numerous Docker containers layered inside of LXD, but not the other way around. 

Docker: The most significant benefit Docker offers over LXD is portability. Docker applications are loosely connected with operating systems, networks, and storage, which renders Docker containers more portable than LXD.

LXD vs Docker: A Comparison

  • Canonical Limited is in charge of LXD whereas Docker Inc. owns Docker.
  • Only OpenNebula and Openstack enable the integration of 1lxd with other tools and technologies. However, we can integrate Docker with a wide variety of tools and technologies like Jenkins, Kubernetes, Ansible, etc.
  • Docker is more versatile than LXD.
  • LXD only has 2500 stars and 604 forks on GitHub, making it less prominent than Docker. Docker, nevertheless, is a popular container platform with 16300 forks on GitHub with 56600 stars.
  • LXD can be found implemented on Stockopedia, Deck-D, etc whereas one can find Docker on Pinterest, Twitter, Google, etc.

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Conclusion

LXD and Docker are frequently contrasted, although they shouldn't really be viewed as competing platforms. They both have a distinct function and have a specific place in the online realm, as was seen above. In some situations, even running Docker via LXD is feasible and appropriate.

You may readily use Docker to have the actual service operating within the container after using LXD to construct your virtual systems operating within the containers, and divide them as you desire.

Liked our take on LXD vs Docker? Keep reading our blogs to increase your knowledge base around such technologies and platforms.

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Srivalli
Srivalli
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As a senior technical content writer for HRK tainings, srivalli patchava has a greater understanding of today's data-driven environment, which includes key aspects of data management and IT organizations. She manages the task of creating great content in the areas of software testing, DevOps, Robotic process automation. Connects with her on Linkedin and Twitter.

You can readily use Docker to have the actual service operating within the container after using LXD to establish your virtual systems functioning within the containers, and divide them as you want.

Any current Linux distribution supports LXD. The Ubuntu packages are directly maintained by LXD upstream, and it also releases a snap package that is compatible with the majority of well-known Linux distributions. Additionally, Windows and macOS have the LXD client.

Yes, LXD is an open-source platform.