Month: 2025-10 — Summary of developer contributions for the lsit-it/k8s-cookbook project, focusing on reliability, security, and scalable storage. Key changes targeted Loki logging reliability and Ceph-backed storage capacity to support Kona and Butler growth. Improvements are aligned with business goals of stable logging, secure configurations, and scalable data storage.

September 2025 monthly summary for developer work on lsst-it/k8s-cookbook focused on observability enhancements and on-call readiness: Key features delivered: - SNMP exporter configuration added for fleet main8-as02: Introduced and configured SNMP exporter in fleet/snmp-exporter-pre for deployment main8-as02 to improve monitoring coverage for this fleet. Commit e15924d95d797705545101ab5296d55e62dbea99. - Temperature monitoring and on-call alerting (Squadcast): Implemented high-temperature alerts, refined threshold handling, and configured on-call routing to Squadcast, including accompanying documentation updates. Commits include: - 8f50d6b66f89bc862cbd3c57d85a89e7c8a3a1b2 (fleet/prometheus-alerts) add pdu temperature alert - addbb7846ee43784c4001c8830e457af29ef2637 (fleet/kube-prometheus-stack) add squadcast-oncall - 1198d723bce80c7162e3a1cb3da8d68af2f43173 (fleet/kube-prometheus-stack) add oncall receiver - ded6024c334631390c213def13b3dcb13f5b005d (fleet/prometheus-alerts) add new receiver to README Major bugs fixed: - No explicit critical bugs logged this month; work focused on enhancing observability and alerting pipelines. Overall impact and accomplishments: - Strengthened fleet observability by enabling proactive monitoring (SNMP) and real-time thermal alerts, reducing MTTR for overheating scenarios and ensuring faster incident response through Squadcast on-call routing. - Standardized alerting configuration across components (Prometheus alerts, kube-prometheus-stack) with updated documentation, improving maintainability and knowledge transfer for the on-call team. Technologies/skills demonstrated: - SNMP exporter configuration and integration into Kubernetes-based deployments - Prometheus alerting rules, threshold management, and alert routing (Squadcast on-call) - kube-prometheus-stack customization and README/documentation updates - Cross-team collaboration for on-call readiness and incident response workflows

August 2025: Delivered substantial platform hardening and Kona-focused deployments across k8s-cookbook and lsst-control. Implemented comprehensive Rook Ceph config enhancements, expanded Mimir service capabilities (OBC support and Kona deployment) and pre-configuration updates, and advanced observability with Loki, Kube Prometheus Stack, and Grafana dashboards. Strengthened security with namespace access hardening and external secret fixes, improved storage and performance tuning, and completed Kona-focused cluster modernization (RKE2 bump and member configuration). These changes enable safer multi-tenant operation, faster incident response, and scalable monitoring for production workloads.

Month: 2025-07 — Summary focused on strengthening GitOps and repository hygiene for the lsst-it/k8s-cookbook. Deliverables centered on enabling reproducible deployments, improved auditability, and tighter integration with Git-based workflows.

June 2025 monthly summary for the lsst-it/k8s-cookbook: Delivered targeted observability improvements across Kubernetes environments, including new PVC free-space alerts, cleaner monitoring configurations, enhanced alerting docs and cadence, and richer dashboards. These changes reduce noise, improve fault detection, and provide clearer operational visibility, enabling faster incident response and more reliable uptime.

May 2025 monthly summary for lsst-it/k8s-cookbook focusing on expanding observability and alerting to improve reliability and business value. Delivered enhanced SNMP-based monitoring for Arista tunnels and network base metrics, added SNMP exporter configurations, expanded MIB coverage, and introduced new MIBs for snmp-generator. Implemented Gnoc label-based alert routing in Alertmanager to enable targeted incident response. Resolved Prometheus SNMP configuration issues to ensure stable scraping by fixing YAML formatting and module naming, contributing to reduced alert noise and faster issue diagnosis.

April 2025 monthly summary focusing on delivering reliable monitoring, infrastructure updates, and alignment of test environments. Key outcomes include enhancements to SNMP-based network monitoring for k8s-cookbook, resolution of data integrity issues, and modernization of the Pukem test cluster configuration in lsst-control. These efforts improved reliability, reduced operational risk, and accelerated validation cycles across the CI/CD pipeline.

March 2025 focused on stabilizing dashboard reliability and expanding observability for production systems. Delivered targeted fixes to data source configurations, ensuring accurate data references across obs/dashboards and more reliable displays. Enhanced system observability by expanding Prometheus resource limits, integrating SNMP-based monitoring, and introducing Grafana dashboards for fleet management and Kubernetes monitoring. These changes reduce incident detection time, improve data-driven decisions, and strengthen operational governance across the fleet and cluster environments.

February 2025: Delivered foundational infrastructure readiness and observability enhancements across lsst-control and k8s-cookbook, enabling faster and more reliable cluster provisioning and data-driven operations. Key momentum included RKE2 deployment readiness for the pukem cluster, cluster membership and shell configuration fixes, and stabilization of CI checks, alongside significant observability improvements for Kafka and Kubernetes dashboards and a datasource fix to ensure accurate data access.

December 2024 monthly summary for lsst-it/k8s-cookbook focused on expanding observability and dashboard capabilities to improve operability and data-driven decision making for LSST services in Kubernetes.