
Drew Sessler engineered robust observability, backup, and deployment features for the CrunchyData/postgres-operator repository, focusing on cloud-native PostgreSQL management. Over 16 months, Drew delivered API-driven configuration, OpenTelemetry-based metrics and logging, and flexible backup workflows, leveraging Go, Kubernetes, and YAML. He implemented CRD-driven storage options, automated dependency updates, and enhanced security and compliance through RBAC and SSL validation. Drew’s technical approach emphasized test automation, version management, and integration with cloud storage, resulting in resilient, maintainable operator code. His work reduced operational risk, improved upgrade and monitoring workflows, and enabled seamless adoption of new PostgreSQL versions, demonstrating depth in backend and DevOps engineering.

February 2026: Key feature delivery and impact for CrunchyData/postgres-operator. Implemented Automated Dependency Update Setup to enable Dependabot to automatically manage and update dependencies (targeting version 5.8) across GitHub Actions and Go modules. No major bugs reported in this period. Overall impact: reduced maintenance overhead, improved security posture, and faster adoption of up-to-date dependencies. Technologies demonstrated: Dependabot, GitHub Actions, Go modules, CI/CD automation, versioning strategy, and repo configuration.
February 2026: Key feature delivery and impact for CrunchyData/postgres-operator. Implemented Automated Dependency Update Setup to enable Dependabot to automatically manage and update dependencies (targeting version 5.8) across GitHub Actions and Go modules. No major bugs reported in this period. Overall impact: reduced maintenance overhead, improved security posture, and faster adoption of up-to-date dependencies. Technologies demonstrated: Dependabot, GitHub Actions, Go modules, CI/CD automation, versioning strategy, and repo configuration.
January 2026 focused on delivering cross-environment deployment enhancements for the CrunchyData postgres-operator, strengthening observability, and ensuring licensing accuracy. Key work enabled multi-environment production and development deployments, improved log collection reliability, and maintained compliance with updated copyright.
January 2026 focused on delivering cross-environment deployment enhancements for the CrunchyData postgres-operator, strengthening observability, and ensuring licensing accuracy. Key work enabled multi-environment production and development deployments, improved log collection reliability, and maintained compliance with updated copyright.
Month: 2025-12 — Consolidated feature modernization for CrunchyData/postgres-operator. Implemented Postgrescluster Example Modernization to adopt the v1 API and upgrade PostgreSQL from 17 to 18, improving compatibility with latest features and easing onboarding for new users. No major bugs reported; maintenance focused on reliability and future-proofing the example surface.
Month: 2025-12 — Consolidated feature modernization for CrunchyData/postgres-operator. Implemented Postgrescluster Example Modernization to adopt the v1 API and upgrade PostgreSQL from 17 to 18, improving compatibility with latest features and easing onboarding for new users. No major bugs reported; maintenance focused on reliability and future-proofing the example surface.
Month: 2025-11 — Delivered observability, security, and testing improvements for CrunchyData/postgres-operator, focusing on modern Monitorability via OpenTelemetry, safer SSL parameter handling, and robust KUTTL-based tests. These changes reduce misconfigurations, improve monitoring fidelity, and accelerate safe deployments for PostgreSQL 18+.
Month: 2025-11 — Delivered observability, security, and testing improvements for CrunchyData/postgres-operator, focusing on modern Monitorability via OpenTelemetry, safer SSL parameter handling, and robust KUTTL-based tests. These changes reduce misconfigurations, improve monitoring fidelity, and accelerate safe deployments for PostgreSQL 18+.
October 2025 monthly summary: Key feature delivered - PostgreSQL 18 support in the operator API, enabling management and upgrades of PG18 instances. No major bugs fixed this month; maintenance updates were applied to API definitions. Overall impact: enables customers to upgrade to PG18, reduces manual effort, and strengthens automation; positions the operator for PG18 adoption and future versioning. Technologies/skills demonstrated: Kubernetes operator patterns, CRD/API versioning, upgrade workflows, and git-based change traceability (commit a736c1427b03bf4016428a3edbdb648d11273ac9).
October 2025 monthly summary: Key feature delivered - PostgreSQL 18 support in the operator API, enabling management and upgrades of PG18 instances. No major bugs fixed this month; maintenance updates were applied to API definitions. Overall impact: enables customers to upgrade to PG18, reduces manual effort, and strengthens automation; positions the operator for PG18 adoption and future versioning. Technologies/skills demonstrated: Kubernetes operator patterns, CRD/API versioning, upgrade workflows, and git-based change traceability (commit a736c1427b03bf4016428a3edbdb648d11273ac9).
Monthly summary for 2025-09 focusing on feature delivery, bug fixes, and impact for CrunchyData/postgres-operator. Key outcomes include configurable pgBackRest log paths across components, improved handling of log volumes in cloud backups, guarded auto-grow logic when no volume repository, and support for ImageVolumeSource in AdditionalVolumes. These changes enhance reliability, observability, and deployment resilience, while expanding volume management capabilities and validation coverage. Tech stack: Go, Kubernetes operator patterns, CRD validations, unit/integration tests, and cloud storage volume handling.
Monthly summary for 2025-09 focusing on feature delivery, bug fixes, and impact for CrunchyData/postgres-operator. Key outcomes include configurable pgBackRest log paths across components, improved handling of log volumes in cloud backups, guarded auto-grow logic when no volume repository, and support for ImageVolumeSource in AdditionalVolumes. These changes enhance reliability, observability, and deployment resilience, while expanding volume management capabilities and validation coverage. Tech stack: Go, Kubernetes operator patterns, CRD validations, unit/integration tests, and cloud storage volume handling.
August 2025 – CrunchyData/postgres-operator monthly summary. Focused on expanding CRD-driven configuration to improve backup/restore storage flexibility and resilience in Kubernetes deployments.
August 2025 – CrunchyData/postgres-operator monthly summary. Focused on expanding CRD-driven configuration to improve backup/restore storage flexibility and resilience in Kubernetes deployments.
July 2025 monthly summary for CrunchyData/postgres-operator focusing on delivering cloud-enabled backup workflows, improving reliability, and expanding test coverage. Key outcomes include launching a cloud-based pgBackRest repository strategy with in-pod backups, hardening network operations with context-aware HTTP requests, and broadening configuration/test coverage to prevent regressions. Also addressed log management and observability with a targeted bug fix and support for PVC-backed cloud backup logs, enhancing data retention and traceability.
July 2025 monthly summary for CrunchyData/postgres-operator focusing on delivering cloud-enabled backup workflows, improving reliability, and expanding test coverage. Key outcomes include launching a cloud-based pgBackRest repository strategy with in-pod backups, hardening network operations with context-aware HTTP requests, and broadening configuration/test coverage to prevent regressions. Also addressed log management and observability with a targeted bug fix and support for PVC-backed cloud backup logs, enhancing data retention and traceability.
Month: 2025-06 — OpenTelemetry metrics exporter testing coverage for Patroni, PgBouncer, and PostgreSQL delivered for CrunchyData/postgres-operator. Implemented comprehensive tests to validate metrics configuration and export paths, ensuring reliable integration with the OpenTelemetry collector across key components. No major bugs fixed this month. Overall impact: strengthened observability, faster issue detection, and improved stability of the operator's metrics pipeline. Technologies demonstrated: OpenTelemetry, metrics exporter testing, test automation, Patroni/PgBouncer/PostgreSQL integration, and collector interoperability.
Month: 2025-06 — OpenTelemetry metrics exporter testing coverage for Patroni, PgBouncer, and PostgreSQL delivered for CrunchyData/postgres-operator. Implemented comprehensive tests to validate metrics configuration and export paths, ensuring reliable integration with the OpenTelemetry collector across key components. No major bugs fixed this month. Overall impact: strengthened observability, faster issue detection, and improved stability of the operator's metrics pipeline. Technologies demonstrated: OpenTelemetry, metrics exporter testing, test automation, Patroni/PgBouncer/PostgreSQL integration, and collector interoperability.
May 2025 monthly summary for CrunchyData/postgres-operator: Delivered substantial enhancements to observability, metrics reliability, and deployment flexibility. Focused on OpenTelemetry metrics improvements, expanded and stabilized PostgreSQL metrics for Grafana, and enhanced collector deployment customization with exporter support. These changes improve diagnosability, reliability, and cloud-readiness, driving faster root-cause analysis and lower incident toil.
May 2025 monthly summary for CrunchyData/postgres-operator: Delivered substantial enhancements to observability, metrics reliability, and deployment flexibility. Focused on OpenTelemetry metrics improvements, expanded and stabilized PostgreSQL metrics for Grafana, and enhanced collector deployment customization with exporter support. These changes improve diagnosability, reliability, and cloud-readiness, driving faster root-cause analysis and lower incident toil.
April 2025 (2025-04): Focused on expanding observability, reliability, and maintainability for CrunchyData/postgres-operator. Delivered OpenTelemetry integration tests across primary, pgbouncer, and pgadmin with a standalone OTel collector, including tests for custom metric queries and log ingestion during backups and validation of collector behavior when backups are disabled. Fixed restore job flag parsing to prevent unintended --target-action when --target-timeline is used, with expanded test coverage for valid/invalid options. Removed outdated pgBackRest SSH config and recovery.signal handling as part of cleanup aligned with mTLS and Patroni standby management. These efforts improved observability, backup/restore reliability, and code maintainability, reducing production risk and enabling faster incident detection and resolution.
April 2025 (2025-04): Focused on expanding observability, reliability, and maintainability for CrunchyData/postgres-operator. Delivered OpenTelemetry integration tests across primary, pgbouncer, and pgadmin with a standalone OTel collector, including tests for custom metric queries and log ingestion during backups and validation of collector behavior when backups are disabled. Fixed restore job flag parsing to prevent unintended --target-action when --target-timeline is used, with expanded test coverage for valid/invalid options. Removed outdated pgBackRest SSH config and recovery.signal handling as part of cleanup aligned with mTLS and Patroni standby management. These efforts improved observability, backup/restore reliability, and code maintainability, reducing production risk and enabling faster incident detection and resolution.
March 2025 monthly summary for CrunchyData/postgres-operator: delivered key observability and reliability improvements focused on OpenTelemetry metrics and log collection resilience. Changes enable users to configure custom metrics queries via the instrumentation API, extend metrics collection control, and ensure rotated logs are captured, reducing data gaps and MTTR. The work strengthens monitoring capabilities, improves operator operability, and demonstrates proficiency with OpenTelemetry, Prometheus, and Kubernetes-based configurations.
March 2025 monthly summary for CrunchyData/postgres-operator: delivered key observability and reliability improvements focused on OpenTelemetry metrics and log collection resilience. Changes enable users to configure custom metrics queries via the instrumentation API, extend metrics collection control, and ensure rotated logs are captured, reducing data gaps and MTTR. The work strengthens monitoring capabilities, improves operator operability, and demonstrates proficiency with OpenTelemetry, Prometheus, and Kubernetes-based configurations.
February 2025 — CrunchyData/postgres-operator: Focused on elevating observability, reliability, and configurability to reduce operational toil and accelerate issue diagnosis for production PostgreSQL deployments. Implemented OpenTelemetry instrumentation and log enrichment across Patroni, pgAdmin, and exporters, enabling API-driven exporters and CRD-based configuration. Strengthened log management with reliability-focused OTEL Collector improvements, including log rotation and retention for PgBouncer and PostgreSQL, plus reload logic to ensure seamless collector restarts. Enabled Patroni file logging under the OpenTelemetryLogs gate with sensible defaults and robust log level handling, improving visibility where needed. Fixed a metrics configuration bug by cloning the metrics variable, preventing runaway growth of fiveSecondMetrics and stabilizing telemetry pipelines. These efforts deliver clearer telemetry, safer log retention, and reduced operational risk while enabling customers to tailor observability via CRDs.
February 2025 — CrunchyData/postgres-operator: Focused on elevating observability, reliability, and configurability to reduce operational toil and accelerate issue diagnosis for production PostgreSQL deployments. Implemented OpenTelemetry instrumentation and log enrichment across Patroni, pgAdmin, and exporters, enabling API-driven exporters and CRD-based configuration. Strengthened log management with reliability-focused OTEL Collector improvements, including log rotation and retention for PgBouncer and PostgreSQL, plus reload logic to ensure seamless collector restarts. Enabled Patroni file logging under the OpenTelemetryLogs gate with sensible defaults and robust log level handling, improving visibility where needed. Fixed a metrics configuration bug by cloning the metrics variable, preventing runaway growth of fiveSecondMetrics and stabilizing telemetry pipelines. These efforts deliver clearer telemetry, safer log retention, and reduced operational risk while enabling customers to tailor observability via CRDs.
January 2025 monthly summary for CrunchyData/postgres-operator: Focused on enhancing reliability and observability for backup/restore workflows and runtime services. Delivered robust test coverage for restore/backup and added OpenTelemetry-based metrics/logs for Patroni and PgBouncer, with feature flag controls to enable/disable observability as needed.
January 2025 monthly summary for CrunchyData/postgres-operator: Focused on enhancing reliability and observability for backup/restore workflows and runtime services. Delivered robust test coverage for restore/backup and added OpenTelemetry-based metrics/logs for Patroni and PgBouncer, with feature flag controls to enable/disable observability as needed.
December 2024 — Key platform and security enhancements for CrunchyData/postgres-operator. Achieved stability and API surface improvements via core tooling upgrades, ensured reliable cancellation handling, and hardened the metrics endpoint to improve security and compliance. These efforts reduce downtime, improve compatibility with upgraded Kubernetes controllers, and strengthen observability with secure metrics access.
December 2024 — Key platform and security enhancements for CrunchyData/postgres-operator. Achieved stability and API surface improvements via core tooling upgrades, ensured reliable cancellation handling, and hardened the metrics endpoint to improve security and compliance. These efforts reduce downtime, improve compatibility with upgraded Kubernetes controllers, and strengthen observability with secure metrics access.
November 2024: Delivered PostgreSQL End-Of-Life (EOL) warning event in CrunchyData/postgres-operator. Features include controller logic to detect EOL versions, and a tested utility function to determine final releases, all backed by unit tests. This enhances lifecycle governance, enables proactive upgrade planning, and improves operator observability. No major bugs fixed this month. Technologies demonstrated: Go, Kubernetes operator patterns, controller-runtime, eventing, and test-driven development for utilities. Business value: reduces risk of running unsupported versions and improves upgrade planning.
November 2024: Delivered PostgreSQL End-Of-Life (EOL) warning event in CrunchyData/postgres-operator. Features include controller logic to detect EOL versions, and a tested utility function to determine final releases, all backed by unit tests. This enhances lifecycle governance, enables proactive upgrade planning, and improves operator observability. No major bugs fixed this month. Technologies demonstrated: Go, Kubernetes operator patterns, controller-runtime, eventing, and test-driven development for utilities. Business value: reduces risk of running unsupported versions and improves upgrade planning.
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