Kubernetes Monitoring with Prometheus

  1. Application and Workload Monitoring
    1. Application Instrumentation
      1. Prometheus Client Libraries
        1. Go Client Library
          1. Java Client Library
            1. Python Client Library
              1. Node.js Client Library
                1. .NET Client Library
                2. Metrics Endpoint Implementation
                  1. HTTP Server Setup
                    1. Endpoint Security
                      1. Performance Considerations
                        1. Error Handling
                        2. Instrumentation Patterns
                          1. Counter Usage Patterns
                            1. Gauge Implementation
                              1. Histogram Configuration
                                1. Summary Implementation
                                  1. Custom Collector Development
                                2. Automatic Metrics Discovery
                                  1. Pod Annotation-Based Discovery
                                    1. prometheus.io/scrape Annotation
                                      1. prometheus.io/port Annotation
                                        1. prometheus.io/path Annotation
                                          1. prometheus.io/scheme Annotation
                                          2. ServiceMonitor Resources
                                            1. Label Selector Configuration
                                              1. Endpoint Specification
                                                1. Namespace Selection
                                                  1. Interval Configuration
                                                  2. PodMonitor Resources
                                                    1. Pod Selection Criteria
                                                      1. Port Configuration
                                                        1. Path Customization
                                                          1. Label Management
                                                        2. Application Metrics Best Practices
                                                          1. Metric Naming Standards
                                                            1. Namespace Conventions
                                                              1. Subsystem Organization
                                                                1. Unit Suffixes
                                                                  1. Avoiding Conflicts
                                                                  2. Label Design Principles
                                                                    1. Cardinality Management
                                                                      1. Label Naming Guidelines
                                                                        1. Avoiding High-Cardinality Labels
                                                                          1. Label Value Constraints
                                                                          2. Metric Type Selection
                                                                            1. Counter vs Gauge Decision
                                                                              1. Histogram vs Summary Choice
                                                                                1. Bucket Configuration
                                                                                  1. Quantile Selection
                                                                                2. Business Logic Monitoring
                                                                                  1. Key Performance Indicators
                                                                                    1. Request Rate Tracking
                                                                                      1. Error Rate Monitoring
                                                                                        1. Response Time Measurement
                                                                                          1. Throughput Analysis
                                                                                          2. Custom Business Metrics
                                                                                            1. User Activity Tracking
                                                                                              1. Feature Usage Metrics
                                                                                                1. Revenue Impact Metrics
                                                                                                  1. Conversion Rate Tracking
                                                                                                2. Workload-Specific Monitoring
                                                                                                  1. Web Application Monitoring
                                                                                                    1. HTTP Request Metrics
                                                                                                      1. Database Connection Metrics
                                                                                                        1. Cache Performance
                                                                                                          1. Session Management
                                                                                                          2. Microservice Monitoring
                                                                                                            1. Service-to-Service Communication
                                                                                                              1. Circuit Breaker Metrics
                                                                                                                1. Retry and Timeout Tracking
                                                                                                                  1. Dependency Health
                                                                                                                  2. Batch Job Monitoring
                                                                                                                    1. Job Completion Metrics
                                                                                                                      1. Processing Rate
                                                                                                                        1. Error Handling
                                                                                                                          1. Resource Consumption
                                                                                                                          2. Database Monitoring
                                                                                                                            1. Connection Pool Metrics
                                                                                                                              1. Query Performance
                                                                                                                                1. Transaction Metrics
                                                                                                                                  1. Lock Contention

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                                                                                                                              9. Alerting with Prometheus and Alertmanager