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.
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
Auto-start of any failed VMs
Auto-start of any VMs after reboot
Detection of failed hosts and automated recovery of any affected VMs
Detect and clean up orphaned resources after a failed host is removed
Removal of any failed hosts from the pool with the takeover of services
Fencing support for HP ILO, XVM, and POOL fencing (forceful removal of the host from the pool)
Split-brain prevention using heuristics from external network points and quorum
HA support for pools with two hosts
Structured interface for simple “bolt-on” of fencing scripts
Dual operating modes for applying HA to appliances or individual VMs
Ability to exclude selected appliances and VMs from HA logic
Auto-detection of host status allows for safely working on hosts without disabling HA
Centralized configuration for the entire pool stored in the XAPI database
Command-line tool for managing global configuration parameters
Parameter override available per host for custom configurations
HA can be enabled/disabled via a command-line tool or graphical interface (like XenCenter)
Extensive Logging capabilities to the system log file
Email alerting on configurable triggers
Dynamic cluster management logic auto-selects roles and determines recovery policy
No changes to the existing pool configuration are required. All logic is external
No dependencies – does not compromise pool stability or introduce complex SW packages.
Designed to work with the resident packages on a standard XCP/XenServer host
Full 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.