Synchronized Operating State (Erl, Naserpour)
How can the availability and reliability of virtual servers be ensured when high availability and clustering technology is unavailable?
ProblemA 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.
SolutionA composite failover system is created to not rely on clustering or high availability features but instead use heartbeat messages to synchronize virtual servers.
ApplicationThe heartbeat messages are processed by a specialized service agent and are exchanged between hypervisors, the hypervisor and virtual server, and the hypervisor and VIM.
MechanismsCloud Storage Device, Failover System, Hypervisor, Resource Replication, State Management Database, Virtual Server
Compound PatternsBurst In, Burst Out to Private Cloud, Burst Out to Public Cloud, Cloud Authentication and Access Management, Elastic Environment, Infrastructure-as-a-Service (IaaS), Multitenant Environment, Platform-as-a-Service (PaaS), Private Cloud, Public Cloud, Resilient Environment, Secure Burst Out to Private Cloud/Public Cloud, Software-as-a-Service (SaaS)
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: