April 2026 performance summary for ministryofjustice/modernisation-platform-environments Key features delivered: - System Node Group Configuration and Karpenter Scheduling for EKS System Environments: implemented per-environment system node group configuration, integrated Karpenter scheduling with system NGs, and updated the Cilium module branch to support system NG builds. - Commits demonstrating progress: a3b0a1061322bfb074a088221a5f3419a77784f4; 3fe3dc2f2841ce6b01c7a701bb4d2008ca4ec498; b9cd8f53c13152ce32da3a398cc29ddcc1ed7f69; 587ed017a82d676df2c0d5ce7bf5573962a0c51c - EBS CSI Driver and CoreDNS Node Selectors and Tolerations in EKS: added node selectors and tolerations to EBS CSI driver and CoreDNS to improve workload placement and resource management; several commits refined selectors. - Commits demonstrating progress: 4865ad2267d226b2d1a4454bf84d570406a31d95; ddc96d00502fab2fdcd289784620079dc54c7b8c; 2ad58416d90faddfdbf15f44a35af03cdc0673ba; 0b4c50278453a2a3d0dd064474379dab45727239 Major bugs fixed: - No major bug fixes tracked for this period. Focused on feature delivery to improve scheduling, workload placement, and operational stability. These changes reduce toil and help prevent placement-related issues going forward. Overall impact and accomplishments: - Enhanced scheduling reliability and resource isolation for system environments, enabling more predictable deployments and easier scalability for the platform. - Improved workload placement efficiency by aligning EBS CSI and CoreDNS components with appropriate node pools. - Strengthened governance and consistency across environments through per-environment system node groups and standardized tolerations and selectors. Technologies/skills demonstrated: - Kubernetes and AWS EKS, with Karpenter-based scheduling, Cilium module management, EBS CSI, CoreDNS - Node selectors and tolerations for refined workload placement - Per-environment configuration management and IaC practices - Git-based change tracing and incremental delivery

March 2026 monthly summary for ministryofjustice/modernisation-platform-environments: Focused on stability, automation, and governance of environment provisioning. Delivered key features to fix fresh cluster builds, enable safe cluster deletion, and reintroduce Karpenter-managed manager nodes; aligned Kubernetes provider configurations; added resiliency with Try blocks and counting to avoid unnecessary infra builds; and implemented robust data handling to prevent processing errors. Major bug fixes included cleanup of unused resources and safe revert paths. These efforts reduced build failures, improved deployment reliability, and enabled safer cluster lifecycle operations across environments.

February 2026: Strengthened operational resilience and cloud-platform governance through targeted feature deliveries across two repos. Implemented a dedicated move-and-improve alerts route and expanded alert severities for key finance components to improve monitoring and incident response. Enabled more autonomous resource management by granting Karpenter the ability to delete SQS queues via IAM policy updates. No explicit bug-fix work was reported this month; all efforts focused on feature delivery with clear, commit-level traceability and measurable business value.

January 2026 monthly summary for cloud platform engineering focusing on feature delivery and infrastructure improvements across three repositories. This period emphasized enhancing monitoring, enabling event-driven architectures, and establishing governance hygiene, with clear alignment to business value and operational resilience.

December 2025: Strengthened monitoring and notification reliability for Prisoner Finance services within the cloud platform infrastructure. Delivered new alert manager severity levels for hmpps-prisoner-finance-sync-dev and hmpps-prisoner-finance-alerts-nonprod, and fixed the Slack webhook integration for hmpps-official-visits-non-prod to ensure reliable alerts. These changes improve incident detection, response times, and reduce alert fatigue across environments.

November 2025 highlights focused on governance, reliability, and operational hygiene across two repositories. Key features delivered include API Gateway Tagging Governance, enforcing mandatory tags on API gateway resources (business unit, application, production status, environment name, team ownership, infrastructure support, namespace) to improve governance and cost/ownership traceability; and Kinesis Firehose configuration corrections, aligning parameter naming to buffering_size/buffering_interval to meet AWS expectations and improve data streaming reliability to S3.

October 2025 monthly summary focusing on reliability improvements and operational hygiene for the cloud platform infrastructure. Delivered targeted fixes to stabilize AWS account provisioning via the SSO module and enhanced observability and non-prod workflow through alerting enhancements and Terraform hygiene. The work reduces provisioning risk, improves incident response for non-prod environments, and improves maintainability of infrastructure as code.

September 2025 performance summary: Delivered Slack webhook lifecycle improvements and a monitoring system upgrade to boost reliability and scalability. Slack webhooks were regenerated and rotated to fix misconfigurations, Terraform webhook configurations were updated to support private channels, and legacy archived configurations were removed, improving security and channel governance. The monitoring stack was upgraded to a newer module version, and node scale limits were increased to reduce alert noise and enhance reliability during growth. These changes reduce operational risk, shorten incident response times, and support higher platform throughput with lower maintenance overhead.

August 2025 monthly summary focusing on infrastructure routing improvements, severity naming standardization, and monitoring upgrades that delivered production-ready routes, consistent alert severities, and enhanced node-scale alerting. The work enables faster incident response, reduces misrouting, and strengthens platform governance across prod and nonprod environments.

July 2025 monthly summary: Implemented strategic infrastructure and documentation updates across two repositories to improve accessibility, security, and developer onboarding. Delivered production and non-production routes for hmpps-arns-risk-actuarial and an alert-manager route for hmpps-document-management-api via Terraform, strengthening service access control and alerting. Authored a comprehensive Kubernetes egress blocking guide using Calico Network Policies, with practical YAML examples and RBAC guidance to reduce unintended egress. Updated documentation to reflect current reviews and improved formatting, ensuring consistency and maintainability across the cloud-platform-user-guide. These efforts advance security posture, operational reliability, and developer productivity.

Month: 2025-06 — Cloud Platform Infrastructure: Key observability and governance enhancements delivered to improve incident detection, alert routing, and resource governance. Business value delivered includes faster incident detection, clearer ownership, and improved cost attribution. No major bugs fixed this period. Repositories: ministryofjustice/cloud-platform-infrastructure.

May 2025 monthly summary: Delivered key documentation and infrastructure enhancements across two repositories, focusing on upgrade readiness, tagging governance, and CI workflow improvements. No customer-facing defects fixed this month; changes primarily targeted documentation, infrastructure as code, and release processes to reduce risk and improve governance.

April 2025 highlights: delivered infrastructure observability improvements, stability enhancements, and security posture upgrades across three repositories, driving reliability and business value. Key features delivered: - Alert routing enhancements and notification controls in ministryofjustice/cloud-platform-infrastructure, including new alert manager routes (e.g., cjs-dashboard-alerts, laa-alerts-ccms-pui-non-prod), updated webhooks, and safeguards to suppress Slack notifications in non-manager workspaces. - EKS CSI driver upgrade to maintain Kubernetes 1.30 compatibility and access improvements. - Environment configuration updates across dev/stage/prod to support updated alerting, volumes, and environment-specific settings. Major bugs fixed: - Cleanup of unused cluster creation config variables (slack_hook_id, pagerduty_config) in ministryofjustice/cloud-platform-cli to prevent pipeline errors. - Build tooling stability improvements, including Kubectl version pinning in Dockerfile to 1.30.4. - CI/CD tooling updates in ministryofjustice/cloud-platform-terraform-concourse to fix cluster creation and apply security patches by upgrading cloud-platform CLI/tools across pipelines. Overall impact and accomplishments: - Reduced alert noise and improved observability; faster, safer deployments; mitigated pipeline failures; and strengthened security posture through up-to-date tooling. Technologies/skills demonstrated: Kubernetes/EKS, Alertmanager, webhook configurations, Docker/Kubectl, Terraform, and CI/CD tooling.

March 2025: Focused on stability, parity, and performance improvements across the cloud-platform portfolio. Delivered targeted runbook remediation and foundational Kubernetes platform upgrades, aligning environments and strengthening operational readiness. The work reduces manual toil during upgrades, decreases risk of outages, and supports safer scaling as usage grows.

February 2025 performance summary focusing on cross-repo feature delivery, security-conscious UX improvements, and improved incident response readiness. No critical bug fixes were reported this month; work prioritized delivering durable features, alignment with security policies, and developer experience enhancements that scale across environments.

January 2025 performance summary for ministryofjustice/cloud-platform-infrastructure. Delivered key observability improvements by configuring alert routes for LAa Get Payments Finance Data across development, UAT, and production environments, and added a non-production alert route for HMPPS Launchpad. Implemented alert routing changes and a severity naming update to standardize incident response. All work completed with clear commit history and alignment with security and governance standards, enabling faster detection and resolution of data-retrieval issues and improved pre-prod readiness.

December 2024: Focused on enhancing alerting and notification workflows for Prison Services within the cloud-platform-infrastructure repository. Delivered targeted AlertManager integrations for Prison Roll Count, updated alert routing for HMPPS 'book a video link' service, and aligned hmpps-prison-person-api-prod to use the prod notification channel. Implemented via three committed changes, improving incident visibility, routing accuracy, and operational reliability across production and development environments.

November 2024 monthly summary focusing on delivering configuration-based improvements that enhance incident response, while maintaining a low-risk profile through no-code changes. Key work spanned two repositories: ministryofjustice/cloud-platform-infrastructure and ministryofjustice/cloud-platform. Primary outcomes include improved alert prioritization, corrected runbook guidance, and reinforced operational reliability, setting the stage for further automation in subsequent months.