Book Image

Ceph: Designing and Implementing Scalable Storage Systems

By : Michael Hackett, Vikhyat Umrao, Karan Singh, Nick Fisk, Anthony D'Atri, Vaibhav Bhembre
Book Image

Ceph: Designing and Implementing Scalable Storage Systems

By: Michael Hackett, Vikhyat Umrao, Karan Singh, Nick Fisk, Anthony D'Atri, Vaibhav Bhembre

Overview of this book

This Learning Path takes you through the basics of Ceph all the way to gaining in-depth understanding of its advanced features. You’ll gather skills to plan, deploy, and manage your Ceph cluster. After an introduction to the Ceph architecture and its core projects, you’ll be able to set up a Ceph cluster and learn how to monitor its health, improve its performance, and troubleshoot any issues. By following the step-by-step approach of this Learning Path, you’ll learn how Ceph integrates with OpenStack, Glance, Manila, Swift, and Cinder. With knowledge of federated architecture and CephFS, you’ll use Calamari and VSM to monitor the Ceph environment. In the upcoming chapters, you’ll study the key areas of Ceph, including BlueStore, erasure coding, and cache tiering. More specifically, you’ll discover what they can do for your storage system. In the concluding chapters, you will develop applications that use Librados and distributed computations with shared object classes, and see how Ceph and its supporting infrastructure can be optimized. By the end of this Learning Path, you'll have the practical knowledge of operating Ceph in a production environment. This Learning Path includes content from the following Packt products: • Ceph Cookbook by Michael Hackett, Vikhyat Umrao and Karan Singh • Mastering Ceph by Nick Fisk • Learning Ceph, Second Edition by Anthony D'Atri, Vaibhav Bhembre and Karan Singh
Table of Contents (27 chapters)
Title Page
About Packt
Contributors
Preface
Index

How to use librados?


To get started with librados, a development environment is needed. For the examples in this chapter, one of the monitor nodes can be used to act as both the development environment and the client to run the developed application. The examples in this book assume you are using a Debian based distribution:

  1. Firstly, install the base build tools for the operating system:
$ sudo apt-get install build-essential

The preceding command gives the following output:

  1. Install the librados development library:
$ sudo apt-get install librados-dev

The preceding command gives the following output:

  1. Now that your environment is complete, let's create a quick application written in C to establish a connection to the test Ceph cluster:
$ mkdir test_app
$ cd test_app
  1. Create a file called test_app.c with your favorite text editor and place the following in it:
       #include <rados/librados.h> 
       #include <stdio.h> 
       #include <stdlib.h> 

       rados_t rados = NULL; 

...