Kubernetes Monitoring with Prometheus

  1. Monitoring Kubernetes Core Components
    1. Kubelet Monitoring
      1. Kubelet Metrics Endpoint
        1. Authentication Requirements
          1. Certificate Configuration
            1. Metric Categories
            2. cAdvisor Integration
              1. Container Metrics Collection
                1. Resource Usage Tracking
                  1. Performance Data
                  2. Key Kubelet Metrics
                    1. Runtime Operations
                      1. Pod Lifecycle Events
                        1. Volume Management
                          1. Network Plugin Status
                            1. Container Runtime Health
                          2. API Server Monitoring
                            1. Metrics Endpoint Configuration
                              1. Secure Access Setup
                                1. Authentication Methods
                                  1. Authorization Requirements
                                  2. Request Performance Metrics
                                    1. Latency Percentiles
                                      1. Request Rate by Resource
                                        1. Error Rate Analysis
                                          1. Queue Depth Monitoring
                                          2. Resource-Specific Metrics
                                            1. CRUD Operation Tracking
                                              1. Watch Connection Metrics
                                                1. Admission Controller Performance
                                                  1. Webhook Latency
                                                2. kube-state-metrics Monitoring
                                                  1. Deployment Configuration
                                                    1. Resource Requirements
                                                      1. RBAC Permissions
                                                        1. High Availability Setup
                                                        2. Exposed Metrics Categories
                                                          1. Pod Status Metrics
                                                            1. Deployment State Metrics
                                                              1. Node Condition Metrics
                                                                1. Resource Quota Metrics
                                                                  1. Persistent Volume Metrics
                                                                  2. Custom Resource Monitoring
                                                                    1. CRD Metric Generation
                                                                      1. Custom Resource Status
                                                                        1. Operator-Managed Resources
                                                                      2. etcd Cluster Monitoring
                                                                        1. Metrics Endpoint Access
                                                                          1. TLS Configuration
                                                                            1. Authentication Setup
                                                                              1. Network Access
                                                                              2. Performance Metrics
                                                                                1. Request Latency
                                                                                  1. Throughput Metrics
                                                                                    1. Database Size Tracking
                                                                                      1. Compaction Performance
                                                                                      2. Health and Reliability Metrics
                                                                                        1. Leader Election Status
                                                                                          1. Member Health
                                                                                            1. Network Latency
                                                                                              1. Disk Performance
                                                                                            2. DNS Service Monitoring
                                                                                              1. CoreDNS Metrics
                                                                                                1. Query Performance
                                                                                                  1. Cache Hit Rates
                                                                                                    1. Error Rates
                                                                                                      1. Plugin-Specific Metrics
                                                                                                      2. kube-dns Metrics (Legacy)
                                                                                                        1. Resolution Performance
                                                                                                          1. Upstream Query Metrics
                                                                                                            1. Cache Statistics
                                                                                                          2. Network Component Monitoring
                                                                                                            1. kube-proxy Metrics
                                                                                                              1. Service Proxy Performance
                                                                                                                1. iptables Rule Management
                                                                                                                  1. Connection Tracking
                                                                                                                    1. Load Balancing Statistics
                                                                                                                    2. CNI Plugin Metrics
                                                                                                                      1. Network Interface Statistics
                                                                                                                        1. IP Address Management
                                                                                                                          1. Policy Enforcement
                                                                                                                        2. Controller Manager Monitoring
                                                                                                                          1. Controller-Specific Metrics
                                                                                                                            1. Reconciliation Rates
                                                                                                                              1. Work Queue Depth
                                                                                                                                1. Error Rates
                                                                                                                                  1. Processing Duration
                                                                                                                                  2. Resource Controller Metrics
                                                                                                                                    1. Deployment Controller
                                                                                                                                      1. ReplicaSet Controller
                                                                                                                                        1. StatefulSet Controller
                                                                                                                                          1. Job Controller
                                                                                                                                        2. Scheduler Monitoring
                                                                                                                                          1. Scheduling Performance
                                                                                                                                            1. Scheduling Latency
                                                                                                                                              1. Queue Wait Time
                                                                                                                                                1. Binding Duration
                                                                                                                                                2. Scheduling Decision Metrics
                                                                                                                                                  1. Successful Placements
                                                                                                                                                    1. Scheduling Failures
                                                                                                                                                      1. Preemption Events
                                                                                                                                                        1. Plugin Execution Time

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                                                                                                                                                    8. Application and Workload Monitoring