Book Image

Proxmox Cookbook

By : Wasim Ahmed, Ravi K Jangid
Book Image

Proxmox Cookbook

By: Wasim Ahmed, Ravi K Jangid

Overview of this book

Proxmox VE's intuitive interface, high availability, and unique central management system puts it on par with the world’s best virtualization platforms. Its simplicity and high quality of service is what makes it the foremost choice for most system administrators. Starting with a step-by-step installation of Proxmox nodes along with an illustrated tour of Proxmox graphical user interface where you will spend most of your time managing a cluster, this book will get you up and running with the mechanisms of Proxmox VE. Various entities such as Cluster, Storage, and Firewall are also covered in an easy to understand format. You will then explore various backup solutions and restore mechanisms, thus learning to keep your applications and servers safe. Next, you will see how to upgrade a Proxmox node with a new release and apply update patches through GUI or CLI. Monitoring resources and virtual machines is required on an enterprise level, to maintain performance and uptime; to achieve this, we learn how to monitor host machine resources and troubleshoot common issues in the setup. Finally, we will walk through some advanced configurations for VM followed by a list of commands used for Proxmox and Ceph cluster through CLI. With this focused and detailed guide you will learn to work your way around with Proxmox VE quickly and add to your skillset.
Table of Contents (18 chapters)
Proxmox Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Ceph commands


In this section, we will look at commands for performing various tasks for a Ceph cluster in Proxmox.

How to do it…

The following steps demonstrate the commands used to perform certain tasks for a Ceph cluster:

  1. Use the following command to check the Ceph cluster's health summary:

    # ceph –s
    

    The following screenshot shows our example Ceph cluster with a warning:

  2. Use the following command to check the Ceph cluster's health details with errors:

    # ceph health detail
    

    The following screenshot shows the warning details that tell us whether or not one of the OSDs is experiencing any problems:

  3. Use the following command to see an OSD map:

    # ceph osd tree
    

    The preceding command shows a list of all the member nodes of the Ceph cluster, and the OSDs in each node. This is a quick way to see which OSD is located in a particular node and the ID of each OSD.

    The following screenshot shows the OSD tree of our example cluster:

  4. Use the following command to prevent unnecessary rebalancing during node maintenance...