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  • Book Overview & Buying Proxmox High Availability
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Proxmox High Availability

Proxmox High Availability

By : CHENG MAN
4.3 (4)
Buy this Book
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Proxmox High Availability

Proxmox High Availability

4.3 (4)
By: CHENG MAN
Buy this Book

Overview of this book

If you want to know the secrets of virtualization and how to implement high availability on your services, this is the book for you. For those of you who are already using Proxmox, this book offers you the chance to build a high availability cluster with a distributed filesystem to further protect your system from failure.
Table of Contents (10 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Basic Concepts of a Proxmox Virtual Environment
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1. Basic Concepts of a Proxmox Virtual Environment
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Introduction to Proxmox Virtual Environment
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Introduction to server virtualization
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Server virtualization basics – guest versus host
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Comparing types of server virtualization software
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Basic administration on Proxmox VE
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Virtualization options in Proxmox VE
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Virtual disk options under Proxmox VE
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Introducing the OpenVZ template
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Summary
2
2. Getting Started with a High Availability (HA) Environment
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2. Getting Started with a High Availability (HA) Environment
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What is a high availability (HA) environment?
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Introducing a Proxmox VE cluster
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System requirements for the Proxmox cluster
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HA capability for Proxmox with a two-node cluster
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Summary
3
3. Key Components for Building a Proxmox VE Cluster
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3. Key Components for Building a Proxmox VE Cluster
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Key component 1 – shared storage
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Key component 2 – reliable network
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Key component 3 – a fencing device
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Key component 4 – quorum disk
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Summary
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4. Configuring a Proxmox VE Cluster
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4. Configuring a Proxmox VE Cluster
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Configuring a network for a Proxmox VE cluster
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Preparing storage for a Proxmox cluster
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Configuring a Proxmox VE cluster
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Network fencing with a Cisco switch via SNMP
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Building a Gluster filesystem for a Proxmox cluster
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Building a Ceph filesystem for a Proxmox cluster
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Summary
5
5. Testing on a Proxmox Cluster
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5. Testing on a Proxmox Cluster
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Storage preparation for an LVM shared storage
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Demonstration of live migration
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Building an HA-protected VM
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Testing with the cluster environment
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Setting up a failover domain
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Summary
6
6. System Migration of an Existing System to a Proxmox VE Cluster
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6. System Migration of an Existing System to a Proxmox VE Cluster
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System migration of an existing Linux platform
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Live migration of a physical machine to a KVM
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System migration of a Windows platform
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System migration from VMware to Proxmox
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System migration from XenServer / Hyper-V Server to Proxmox
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Summary
7
7. Disaster Recovery on a Proxmox VE Cluster
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7. Disaster Recovery on a Proxmox VE Cluster
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Backup process for VMs in Proxmox
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The restore process of VMs in Proxmox
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Setting up a scheduled backup for the VMs
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System recovery of a Proxmox cluster failure
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Summary
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8. Troubleshooting on a Proxmox Cluster
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8. Troubleshooting on a Proxmox Cluster
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Troubleshooting system access problems
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Troubleshooting system migration problems
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Troubleshooting system storage problems
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Troubleshooting Proxmox cluster problems
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Summary
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Index
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Index

Troubleshooting Proxmox cluster problems

In this section, we will go through some common problems that we encounter during the operation of a Proxmox cluster, which are as follows:

  • HA VM start up problem

  • The fenced cluster node cannot recover automatically

  • The cluster member node cannot join back with the cluster

  • The cluster service cannot be restarted because of the DLM lockspace

  • Activity blocked within the cluster

Unable to start the HA-enabled VM

Symptom: When you try to start an HA-enabled VM, the operation fails with the following output:

Executing HA start for VM 201
Member vmsrv01 trying to enable pvevm:201… Aborted; service failed
TASK ERROR: command 'clusvcadm -e pvevm:201 -m vmsrv01' failed: exit code 254

Root cause: So, if you start the HA-enabled VM again, the process will still be unsuccessful with the same output. The problem is that the VM 201 is in the failed status, and so it cannot be turned on:

Solution: The HA service with the failed status cannot be used until we re-enable...

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