Meta-Syncer Controller

Overview

Meta-Syncer is a Kubernetes-native controller designed for long-term analysis and synchronization of Kubernetes resources. It enables enhanced visibility and operational insights across multiple clusters by continuously tracking resource state and metadata changes.

Problem

In large multi-cluster environments, understanding resource drift, tracking configuration changes over time, and maintaining consistency across clusters becomes increasingly difficult. Standard Kubernetes tooling provides point-in-time views but lacks historical context and cross-cluster analysis capabilities.

Solution

• Built a custom controller using controller-runtime that watches Kubernetes resources and records their state changes over time
• Implemented synchronization logic to detect and report drift between clusters
• Developed a metadata aggregation layer that provides operational insights such as resource age distribution, update frequency, and configuration patterns
• Integrated with Prometheus for metrics and alerting on resource anomalies

Technical Details

• Language: Golang
• Framework: controller-runtime, client-go
• Storage: PostgreSQL for historical state, Redis for caching
• Observability: Prometheus metrics, structured logging