More about HA-Lizard


HA-Lizard - High Availability for Citrix XenServer Virtualization Platform


HA-Lizard is the hyper-converged standard for high availability and redundancy in two-node XenServer clusters using internal storage. No requirement for external storage or NAS.

Easy High Availability managementt with HA-Lizard 

HA-lizard provides complete automation and hyper-convergence for managing Xen server pools which utilize the XAPI management interface and toolstack (as in Xen Cloud Platform and XenServer). 


The software suite provides complete HA features within a given pool. The overall design is intended to be lightweight with no compromise of system stability.


Traditional cluster management suites are not required. HA is provided with built-in logic for detecting and recovering failed services.


Development is well tested and based on Xen Cloud Platform (XCP) version 1.6 and XenServer 6.1/6.2/6.5/7.0.



 HA-Lizard - Core Features



bulletAuto-start of any failed VMs

bulletAuto-start of any VMs after reboot

bulletDetection of failed hosts and automated recovery of any affected VMs

bulletDetect and clean up orphaned resources after a failed host is removed

bulletRemoval of any failed hosts from the pool with the takeover of services

bulletFencing support for HP ILO, XVM, and POOL fencing (forceful removal of the host from the pool)

bulletSplit-brain prevention using heuristics from external network points and quorum

bulletHA support for pools with two hosts

bulletStructured interface for simple “bolt-on” of fencing scriptsHA-Lizard Two Node Cluster High Availability with Internal Storage

bulletDual operating modes for applying HA to appliances or individual VMs

bulletAbility to exclude selected appliances and VMs from HA logic

bulletAuto-detection of host status allows for safely working on hosts without disabling HA

bulletCentralized configuration for the entire pool stored in the XAPI database

bulletCommand-line tool for managing global configuration parameters

bulletParameter override available per host for custom configurations

bulletHA can be enabled/disabled via a command-line tool or graphical interface (like XenCenter)

bulletExtensive Logging capabilities to the system log file

bulletEmail alerting on configurable triggers

bulletDynamic cluster management logic auto-selects roles and determines recovery policy

bulletNo changes to the existing pool configuration are required. All logic is external

bulletNo dependencies – does not compromise pool stability or introduce complex SW packages.

bulletDesigned to work with the resident packages on a standard XCP/XenServer host

bulletFull hyper-convergence of Citrix Xenserver, High Availability, and Server components


HA-Lizard is available in both Manual and Automated installation to match your requirements. HA-Lizard also provides software for deploying iSCSI High Availability in a 2-Node XAPI based Xen virtualization environment.