docker - Kubernetes 与 Docker : What Does It Really Mean?

Question

我知道 Docker 和 Kubernetes 不是直接的竞争对手。 Docker 是容器平台，容器由工具 Kubernetes 协调调度。

它的真正含义是什么，我如何在 Docker for Azure 上部署我的应用程序？

Answer 1

简短的回答:

Docker(以及一般的容器)解决了打包应用程序及其依赖项的问题。这使得在任何地方运输和运行都很容易。

Kubernetes 是容器之上的一层抽象。它是一个控制/管理容器的分布式系统。

我的建议:因为 landscape是巨大的......开始学习并将拼图的各个部分放在一起学习类(class)。下面我添加了一些信息:

Introduction to Kubernetes ，来自 Linux 基金会的免费在线类(class)。

为什么我们在容器之上需要 Kubernetes(和其他编排器)？

In the quality assurance (QA) environments, we can get away with running containers on a single host to develop and test applications. However, when we go to production, we do not have the same liberty, as we need to ensure that our applications:

• Are fault-tolerant
• Can scale, and do this on-demand
• Use resources optimally
• Can discover other applications automatically, and communicate with each other
• Are accessible from the external world
• Can update/rollback without any downtime.

Container orchestrators are the tools which group hosts together to form a cluster, and help us fulfill the requirements mentioned above.

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Nowadays, there are many container orchestrators available, such as:

• Docker Swarm: Docker Swarm is a container orchestrator provided by Docker, Inc. It is part of Docker Engine.
• Kubernetes: Kubernetes was started by Google, but now, it is a part of the Cloud Native Computing Foundation project.
• Mesos Marathon: Marathon is one of the frameworks to run containers at scale on Apache Mesos.
• Amazon ECS: Amazon EC2 Container Service (ECS) is a hosted service provided by AWS to run Docker containers at scale on its infrastructrue.
• Hashicorp Nomad: Nomad is the container orchestrator provided by HashiCorp.