Building-Applications-on-Mesos.pdf

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In the simplest sense, Mesos is an orchestration platform for managing CPU, mem‐ ory, and other resources across a cluster. Mesos uses containerization technology, such as Docker and Linux Containers (LXC), to accomplish this. However, Mesos provides much more than that—it provides real-time APIs for interacting with and developing for the cluster. Many people wonder where Mesos sits in their stack. Is it part of their deployment infrastructure? Should their infrastructure team manage it? Or is Mesos an applica‐ tion development platform, like Heroku? Maybe Mesos should really belong to an application team… The answer to these questions is not straightforward, because Mesos provides functionality that crosses between Infrastructure as a Service (IaaS) and Platform as a Service (PaaS), in order to achieve greater efficiencies for your sys‐ tem. On the one hand, Mesos is infrastructure: it is the platform on which we deploy Hadoop and Storm and all the other PaaS goodies that we require for business. On the other hand, suppose that we’re trying to develop an application that can process large-scale computations, similar to Hadoop or Spark. In that case, Mesos becomes the platform that we are building on. Suddenly, rather than treating it as a black box, we’re very much concerned with its APIs and how to develop for it. In practice, it’s best to think of Mesos as serving a different purpose altogether. It allows you to stop focusing on individual machines, whether for developing your applications or for deploying them. Instead, it allows you to treat your cluster as a single, large group of resources. Mesos increases your agility for testing and deploy‐ ing new distributed systems, as well as providing the platform to deploy in-house applications more quickly and efficiently than if you needed to involve your devel‐ oper operations (DevOps) organization in those processes. For small projects, Mesos subsumes the many different systems that one might otherwise need to de

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ffffffflie mesos 虽然前途未卜,学习一下还是必要的
2019-11-22
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