Docker vs OpenStack

Overview

Docker

Stacks194.4K

Followers143.9K

Votes3.9K

OpenStack

Stacks790

Followers1.2K

Votes138

Docker vs OpenStack: What are the differences?

Introduction

Docker and OpenStack are both widely used technologies in the field of cloud computing. While they both serve the purpose of managing cloud infrastructure, there are some key differences between them.

Architecture: Docker follows a lightweight containerization approach, where applications and their dependencies are packaged into individual containers. These containers run on a single host operating system, sharing the same kernel. On the other hand, OpenStack is a full-fledged cloud computing platform that provides a range of services including compute, storage, and networking. It follows a modular architecture and utilizes virtual machines for isolation.
Scalability: Docker is known for its scalability as it allows easy scaling of individual containers. With the use of container orchestration tools like Kubernetes, multiple containers can be managed and scaled horizontally. OpenStack, on the other hand, is designed for managing large-scale cloud deployments. It provides scalability at a higher level, enabling the management of a cluster of servers.
Resource utilization: Docker containers are lightweight and have low overhead, thus allowing efficient utilization of system resources. Multiple containers can run on the same host without significant impact on performance. OpenStack, being a comprehensive cloud solution, requires more resources to run as it manages virtual machines and provides various services. This may result in higher resource consumption compared to Docker.
Purpose: Docker is primarily used for application deployment and management. It focuses on providing a consistent environment for running applications across different platforms. OpenStack, on the other hand, is more suited for building and managing cloud infrastructure. It offers a range of services that cater to the needs of a cloud environment, including compute, storage, and networking.
Use cases: Docker is commonly used in scenarios where rapid application deployment and scalability are critical, such as microservices architecture and DevOps practices. It allows developers to package applications with their dependencies, enabling easy distribution and deployment. OpenStack, on the other hand, is well-suited for creating private or public clouds. It is often used by service providers, enterprises, and research organizations for managing cloud infrastructure.
Community and ecosystem: Docker has a vast and active community, with a large number of available images, libraries, and tools. It has gained significant popularity and has a wide range of integrations with various platforms and services. OpenStack also has a well-established community, and it is backed by numerous companies and organizations. It has a comprehensive ecosystem of projects and plugins that extend its functionality.

In summary, Docker focuses on lightweight containerization and application management, while OpenStack provides a full-stack cloud computing platform with a range of services. Docker is more suitable for rapid application deployment and scalability, while OpenStack is designed for larger-scale cloud infrastructure management.

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Advice on Docker, OpenStack

Florian

IT DevOp at Agitos GmbH

Oct 22, 2019

Decided

lxd/lxc and Docker aren't congruent so this comparison needs a more detailed look; but in short I can say: the lxd-integrated administration of storage including zfs with its snapshot capabilities as well as the system container (multi-process) approach of lxc vs. the limited single-process container approach of Docker is the main reason I chose lxd over Docker.

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Detailed Comparison

Docker	OpenStack
The Docker Platform is the industry-leading container platform for continuous, high-velocity innovation, enabling organizations to seamlessly build and share any application — from legacy to what comes next — and securely run them anywhere	OpenStack is a cloud operating system that controls large pools of compute, storage, and networking resources throughout a datacenter, all managed through a dashboard that gives administrators control while empowering their users to provision resources through a web interface.
Integrated developer tools; open, portable images; shareable, reusable apps; framework-aware builds; standardized templates; multi-environment support; remote registry management; simple setup for Docker and Kubernetes; certified Kubernetes; application templates; enterprise controls; secure software supply chain; industry-leading container runtime; image scanning; access controls; image signing; caching and mirroring; image lifecycle; policy-based image promotion	Compute;Storage;Networking;Dashboard;Shared Services
Statistics
Stacks 194.4K	Stacks 790
Followers 143.9K	Followers 1.2K
Votes 3.9K	Votes 138
Pros & Cons
Pros 824 Rapid integration and build up 692 Isolation 521 Open source 505 Testability and reproducibility 461 Lightweight Cons 8 New versions == broken features 6 Unreliable networking 6 Documentation not always in sync 4 Not Secure 4 Moves quickly	Pros 60 Private cloud 39 Avoid vendor lock-in 23 Flexible in use 7 Industry leader 5 Robust architecture
Integrations
Java Docker Compose VirtualBox Linux Amazon EC2 Container Service Docker Swarm boot2docker Kubernetes Docker Machine Vagrant	No integrations available

What are some alternatives to Docker, OpenStack?

Apache CloudStack

CloudStack is open source software designed to deploy and manage large networks of virtual machines, as a highly available, highly scalable Infrastructure as a Service (IaaS) cloud computing platform.

LXD

LXD isn't a rewrite of LXC, in fact it's building on top of LXC to provide a new, better user experience. Under the hood, LXD uses LXC through liblxc and its Go binding to create and manage the containers. It's basically an alternative to LXC's tools and distribution template system with the added features that come from being controllable over the network.

LXC

LXC is a userspace interface for the Linux kernel containment features. Through a powerful API and simple tools, it lets Linux users easily create and manage system or application containers.

rkt

Rocket is a cli for running App Containers. The goal of rocket is to be composable, secure, and fast.

VirtKick

Software as a service platform for hosting providers.

Vagrant Cloud

Vagrant Cloud pairs with Vagrant to enable access, insight and collaboration across teams, as well as to bring exposure to community contributions and development environments.

Renderjuice

Managed cloud render farm for Blender and automated rendering workflows.

Vessel for OpenClaw: Managed AI Agents on Private VMs

300,000+ OpenClaw instances are currently exposed on the public internet (Shodan: port 18789). Most self-hosted setups miss the tunnel, skip the required flags, share containers. When your agent processes untrusted input and holds access to your accounts, that gap matters. Vessel provides private, dedicated hosting for OpenClaw agents. Each agent runs on its own GCP e2-standard-2 VM, its own kernel, its own disk, no shared memory with other tenants. No public IP. No port 18789 exposure. All traffic routes through an encrypted Cloudflare Tunnel. Secrets are managed separately from the runtime. Provision from a web dashboard, connect to Slack, Discord, or WhatsApp, and destroy when done. Your agent's data stays on your VM, your own Vessel.

Studio 3T

It's the only MongoDB tool that provides three ways to explore data alongside powerful features like query autocompletion, polyglot code generation, a stage-by-stage aggregation query builder, import and export, SQL query support and more.

OpenNebula

It provides a simple but feature-rich and flexible solution for the comprehensive management of virtualized data centers to enable on-premise enterprise clouds in existing infrastructures. It can be primarily used as a virtualization tool to manage your virtual infrastructure in the data-center or cluster, which is usually referred as Private Cloud. It supports Hybrid Cloud to combine local infrastructure with public cloud-based infrastructure, enabling highly scalable hosting environments.

Related Comparisons

Docker vs OpenStack: What are the differences?

Introduction

Architecture: Docker follows a lightweight containerization approach, where applications and their dependencies are packaged into individual containers. These containers run on a single host operating system, sharing the same kernel. On the other hand, OpenStack is a full-fledged cloud computing platform that provides a range of services including compute, storage, and networking. It follows a modular architecture and utilizes virtual machines for isolation.
Scalability: Docker is known for its scalability as it allows easy scaling of individual containers. With the use of container orchestration tools like Kubernetes, multiple containers can be managed and scaled horizontally. OpenStack, on the other hand, is designed for managing large-scale cloud deployments. It provides scalability at a higher level, enabling the management of a cluster of servers.
Resource utilization: Docker containers are lightweight and have low overhead, thus allowing efficient utilization of system resources. Multiple containers can run on the same host without significant impact on performance. OpenStack, being a comprehensive cloud solution, requires more resources to run as it manages virtual machines and provides various services. This may result in higher resource consumption compared to Docker.
Purpose: Docker is primarily used for application deployment and management. It focuses on providing a consistent environment for running applications across different platforms. OpenStack, on the other hand, is more suited for building and managing cloud infrastructure. It offers a range of services that cater to the needs of a cloud environment, including compute, storage, and networking.
Use cases: Docker is commonly used in scenarios where rapid application deployment and scalability are critical, such as microservices architecture and DevOps practices. It allows developers to package applications with their dependencies, enabling easy distribution and deployment. OpenStack, on the other hand, is well-suited for creating private or public clouds. It is often used by service providers, enterprises, and research organizations for managing cloud infrastructure.
Community and ecosystem: Docker has a vast and active community, with a large number of available images, libraries, and tools. It has gained significant popularity and has a wide range of integrations with various platforms and services. OpenStack also has a well-established community, and it is backed by numerous companies and organizations. It has a comprehensive ecosystem of projects and plugins that extend its functionality.

Docker vs OpenStack

Overview

Docker vs OpenStack: What are the differences?