HA-lizard provides complete automation 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.
Auto-start of any failed VMs
Auto-start of any VMs on 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 pool with takeover of services
Fencing support for HP ILO, XVM and POOL fencing (forceful removal of host from 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 entire pool stored in XAPI database
Command-line tool for managing global configuration parameters
Parameter override available per host for custom configurations
HA can be enabled/disabled via command line tool or graphical interface (like XenCenter)
Extensive Logging capabilities to system log file
Email alerting on configurable triggers
Dynamic cluster management logic auto-selects roles and determines recovery policy
No changes to existing pool configuration 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
With so many requests for support of high availability of Xenserver and Xen Cloud Platform with 2 hosts, we designed new software to make HA-Lizard even better!
HA-ISCSI is an add-on module for two node pools utilizing Xen Cloud Platform (XCP) or XenServer virtualization environments. It is intended to build highly available two-node clusters with local storage without limiting pool advanced functionality such as live migration.