Virtual Machine Cluster Peer-to-Peer Management via Heartbeat
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Solution Overview
Problem
In virtual machine clusters, the master node often becomes a bottleneck, leading to performance issues and prolonged fault recovery times due to insufficient capacity to manage a large number of slave nodes, and faulty master node re-election can cause resource contention and data damage.
Innovation Solution
Each virtual machine in the cluster maintains a virtual machine list and communicates with neighboring virtual machines via heartbeat messages to determine status, allowing for peer-to-peer management and eliminating the need for a master node, thereby improving fault tolerance and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a master node is used to manage all slave hosts in the cluster, then centralized control and coordination are achieved, but the master host becomes a bottleneck when managing a large quantity of slave hosts, deteriorating overall cluster performance
Solution Approach 1:
The patent divides the centralized management function into distributed peer-to-peer management among multiple virtual machines. Instead of one master node managing all slaves, multiple VMs cooperate to manage the cluster, with each VM capable of managing other VMs. This segmentation eliminates the single point of congestion and distributes the management load across the cluster.
2Reliability
If a master host is used for monitoring and management, then unified service provision is achieved, but when the master host is faulty, slave hosts must re-elect a new master host, consuming time and prolonging fault recovery
Solution Approach 1:
The patent implements preliminary action by having multiple virtual machines pre-configured with management capabilities before any failure occurs. When a failure is detected, another VM that is already prepared can immediately take over management functions without requiring a time-consuming re-election process. This eliminates the bottleneck and delays associated with master host re-election.
3Ease of operation
If a master host architecture is used, then a single system mapping is provided for users, but when slave hosts lose contact with the master host, they re-elect a master host, causing two independent cluster sub-regions to exist, leading to resource contention and data damage
Solution Approach 1:
The patent implements a feedback mechanism where virtual machines continuously exchange status information and coordination messages with each other. When a VM detects that another VM is unavailable, it receives feedback from other VMs about the current management state and adjusts its behavior accordingly. This prevents split-brain scenarios where multiple independent management regions contend for resources, as VMs can coordinate their actions based on real-time feedback from the cluster state.
Data Source
AI summary
The present disclosure provides a method for managing a virtual machine cluster. The method includes: sending, by the first virtual machine, a first heartbeat message to at least two neighboring virtual machines in the N virtual machines, so that the at least two neighboring virtual machines detect the first heartbeat message, where a result of detecting the first heartbeat message is used to determine a status of the first virtual machine, and the first virtual machine establishes a neighbor relationship with the at least two neighboring virtual machines according to the information about the N virtual machines; and detecting, by the first virtual machine as a neighboring virtual machine of a second virtual machine in the at least two virtual machines, a second heartbeat message sent by the second virtual machine.