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Synchronized Operating State

Synchronized Operating State (Erl, Naserpour)

How can the availability and reliability of virtual servers be ensured when high availability and clustering technology is unavailable?

Problem

A cloud consumer may be prevented from utilizing high availability and clustering technology for its virtual servers or operating systems, thereby making them more vulnerable to failure.

Solution

A composite failover system is created to not rely on clustering or high availability features but instead use heartbeat messages to synchronize virtual servers.

Application

The heartbeat messages are processed by a specialized service agent and are exchanged between hypervisors, the hypervisor and virtual server, and the hypervisor and VIM.
Synchronized Operating State: The cloud architecture resulting from the application of this pattern.

The cloud architecture resulting from the application of this pattern.

NIST Reference Architecture Mapping

This pattern relates to the highlighted parts of the NIST reference architecture, as follows:

Synchronized Operating State: NIST Reference Architecture Mapping
Synchronized Operating State: NIST Reference Architecture Mapping