Self-Assigning UUIDs in Cluster Nodes to Eliminate Single Points of Failure
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Solution Overview
Problem
Cluster system management faces challenges with centralized configuration databases leading to bottlenecks and single points of failure, and handling cluster partitions requires complex quorum mechanisms, which can result in system downtime and identifier management issues.
Innovation Solution
Nodes in a cluster determine if they have a universally unique identifier (UUID) and self-assign one if necessary, then write it to the cluster configuration database to join the cluster, allowing for decentralized identifier management and reducing reliance on central authorities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a centralized cluster configuration database is used, then system management is simplified, but it becomes a bottleneck and single point of failure
Solution Approach 1:
The patent segments the centralized configuration database into distributed configuration data stored locally on each node. Each node maintains its own configuration information and cluster metadata locally, eliminating the single point of failure while preserving management capabilities through distributed consensus protocols.
Solution Approach 2:
The patent extracts the critical configuration data from the centralized database and stores it locally on each node. This extraction allows nodes to operate independently even when the central database is unavailable, removing the bottleneck while maintaining system manageability through local configuration files and distributed synchronization mechanisms.
2Reliability
If full replication of cluster configuration database is implemented, then high availability is achieved, but overhead becomes prohibitively high in large clusters
Solution Approach 1:
The patent applies local quality by storing only the configuration data relevant to each specific node locally, rather than replicating the entire cluster configuration database to every node. Each node maintains local configuration files containing only its own identifiers, metadata, and necessary cluster information, reducing replication overhead while ensuring high availability through selective local storage.
3Measurement precision
If a central naming authority assigns identifiers, then universal uniqueness is guaranteed, but it creates a single point of failure and requires identifier modification
Solution Approach 1:
The patent implements self-service by enabling each node to autonomously generate its own universally unique identifier (UUID) using standardized UUID generation algorithms. Nodes do not rely on a central naming authority; instead, they independently create and manage their own identifiers, eliminating the single point of failure while maintaining universal uniqueness through the mathematical properties of UUID generation.
Data Source
AI summary
In response to a stimulus indicating configuration of a node into a cluster of a plurality of nodes including the node, the node determines whether or not the node has a universally unique identifier (UUID), and if not, the node provides its own persistent self-assigned UUID. The node searches a cluster configuration database for a temporary identifier associated with the node. In response to the node locating the temporary identifier of the node in the cluster configuration database, the node writes its self-assigned UUID into the cluster configuration database and joins the cluster.