Documentation Cluster Beat

HA Cluster Infrastructure

The Ha Cluster Infrastructure in F11 includes major changes and new features including hundreds of bug fixing and a major boost in peformance.

New Features from upstream

• corosync is now the core of the Cluster operations:
  • COROSYNC FEATURES HERE
• openais, that offers a recognized open stanadard API:
  • now based on corosync
  • OPENAIS FEATURES HERE
• cluster is now based on both corosync and openais and offers:
  • pluggable configuration mechanism:
    • xml (default)
    • ldap
    • corosync/openais file format
  • Cluster manager (cman):
    • CMAN FEATURES HERE
    • QDISK FEATURES HERE
  • DLM - Distributed Lock Manager:
    • DLM FEATURES HERE
  • fence / fence agents:
    • unfencing
    • FENCE FEATURES HERE
  • rgmanager:
    • RGMANAGER FEATURES HERE

Packaging changes

Lots of effort has been done to cleanup the packages and to make them as complete, intuitive and modular as possible, allowing also external entities to reuse most of the infrastructure without the requirement to pull the whole stack in.

With the new package reorganization, users will find easier to update their cluster. The introduction of fence-agents and resource-agents packages will avoid the pain for users to restarts cluster nodes for simple scripts updates.