https://coresolutions.ltd/blog Core Solutions designs and builds Kubernetes platforms, golden paths, and day-two operating systems for teams that want flexibility without the chaos. en https://coresolutions.ltd/blog/stop-copying-big-tech-platform-architecture https://coresolutions.ltd/blog/stop-copying-big-tech-platform-architecture Right-sizing platform architecture means copying the principles behind big-tech systems, not the stack itself, so small teams avoid operational debt they do not need. Sat, 11 Jul 2026 00:00:00 GMT https://coresolutions.ltd/blog/argo-rollouts-kubernetes-canary-blue-green https://coresolutions.ltd/blog/argo-rollouts-kubernetes-canary-blue-green Learn how to use Argo Rollouts on Kubernetes for canary and blue-green deployments, automated rollback, and GitOps-based progressive delivery. Wed, 08 Jul 2026 00:00:00 GMT https://coresolutions.ltd/blog/just-in-time-node-autoscaling-on-eks-with-karpenter https://coresolutions.ltd/blog/just-in-time-node-autoscaling-on-eks-with-karpenter Karpenter changes EKS node autoscaling by launching right-sized EC2 nodes from pending pods, then consolidating and replacing them as the fleet drifts. Tue, 07 Jul 2026 00:00:00 GMT https://coresolutions.ltd/blog/event-driven-autoscaling-on-kubernetes-with-keda https://coresolutions.ltd/blog/event-driven-autoscaling-on-kubernetes-with-keda Use KEDA on Kubernetes to scale from queue depth, lag, and schedules, and understand when scale to zero is worth the cold-start trade-off. Fri, 03 Jul 2026 00:00:00 GMT https://coresolutions.ltd/blog/ebpf-powered-networking-on-kubernetes-with-cilium https://coresolutions.ltd/blog/ebpf-powered-networking-on-kubernetes-with-cilium Cilium changes Kubernetes networking by replacing more of kube-proxy with eBPF, enforcing identity-aware policy, and adding flow visibility through Hubble. Thu, 02 Jul 2026 00:00:00 GMT https://coresolutions.ltd/blog/batch-workloads-done-right-on-kubernetes-with-kueue https://coresolutions.ltd/blog/batch-workloads-done-right-on-kubernetes-with-kueue Use Kueue to queue Kubernetes batch workloads before they hit the scheduler, so shared cluster quota is admitted deliberately instead of all at once. Wed, 01 Jul 2026 00:00:00 GMT https://coresolutions.ltd/blog/kubernetes-as-your-control-plane-with-crossplane https://coresolutions.ltd/blog/kubernetes-as-your-control-plane-with-crossplane Use Crossplane to make Kubernetes your infrastructure control plane — a self-service platform API for cloud resources, reconciled continuously. Mon, 29 Jun 2026 00:00:00 GMT https://coresolutions.ltd/blog/why-feedback-loops-matter-more-when-llms-write-your-code https://coresolutions.ltd/blog/why-feedback-loops-matter-more-when-llms-write-your-code LLM-generated code arrives quickly, so fast feedback loops for tests, review, and runtime checks matter even more if you want to ship safely. Thu, 25 Jun 2026 00:00:00 GMT https://coresolutions.ltd/blog/surviving-node-drains-pdbs-topology-spread-graceful-shutdown https://coresolutions.ltd/blog/surviving-node-drains-pdbs-topology-spread-graceful-shutdown Node drains are ordinary Kubernetes maintenance, but they only stay boring when replicas are spread out, disruptions are budgeted, and pods shut down cleanly. Wed, 24 Jun 2026 00:00:00 GMT https://coresolutions.ltd/blog/blue-and-green-deployments-with-opentofu-terraform-and-ansible-on-ec2 https://coresolutions.ltd/blog/blue-and-green-deployments-with-opentofu-terraform-and-ansible-on-ec2 Implement blue-green deployments using OpenTofu/Terraform and Ansible on EC2 workloads Mon, 16 Mar 2026 00:00:00 GMT https://coresolutions.ltd/blog/enhance-your-kubernetes-monitoring-with-grafana https://coresolutions.ltd/blog/enhance-your-kubernetes-monitoring-with-grafana Grafana installation, initial dashboard setup, along with some fundamentals and best practices. Mon, 16 Mar 2026 00:00:00 GMT https://coresolutions.ltd/blog/auto-rotating-credentials-with-secrets-manager https://coresolutions.ltd/blog/auto-rotating-credentials-with-secrets-manager Automatically update RDS credentials and application config on EC2 instances. Mon, 16 Mar 2026 00:00:00 GMT https://coresolutions.ltd/blog/auto-update-security-groups-with-cloudflare-ips https://coresolutions.ltd/blog/auto-update-security-groups-with-cloudflare-ips How to auto update security groups with Cloudflare IPs using AWS Lambda Mon, 16 Mar 2026 00:00:00 GMT https://coresolutions.ltd/blog/kubernetes-auto-and-scheduled-scaling https://coresolutions.ltd/blog/kubernetes-auto-and-scheduled-scaling Efficiently scale Kubernetes for a robust, cost-effective cluster management Mon, 16 Mar 2026 00:00:00 GMT https://coresolutions.ltd/blog/kubernetes-cli-tools-to-boost-your-productivity https://coresolutions.ltd/blog/kubernetes-cli-tools-to-boost-your-productivity Boost your Kubernetes productivity with essential CLI tools and tips for streamlined cluster management. Mon, 16 Mar 2026 00:00:00 GMT https://coresolutions.ltd/blog/managing-multiple-aws-accounts-with-terraform https://coresolutions.ltd/blog/managing-multiple-aws-accounts-with-terraform Manage multiple AWS accounts with OpenTofu/Terraform, from super simple to leveraging AWS Control Tower AFT. Mon, 16 Mar 2026 00:00:00 GMT https://coresolutions.ltd/blog/protecting-your-alb-with-waf-cloudfront https://coresolutions.ltd/blog/protecting-your-alb-with-waf-cloudfront Learn how to protect your ALB with AWS WAF and CloudFront. Mon, 16 Mar 2026 00:00:00 GMT https://coresolutions.ltd/blog/resolve-route53-records-from-within-eks https://coresolutions.ltd/blog/resolve-route53-records-from-within-eks Enable seamless DNS resolution for private Route53 records directly within your EKS cluster using CoreDNS. Mon, 16 Mar 2026 00:00:00 GMT https://coresolutions.ltd/blog/run-jenkins-in-docker-with-persistent-data https://coresolutions.ltd/blog/run-jenkins-in-docker-with-persistent-data Quickly launch a test-friendly Jenkins instance in Docker, maintain configuration between restarts, and safely trial new features. Mon, 16 Mar 2026 00:00:00 GMT https://coresolutions.ltd/blog/up-and-running-with-cloudflare-terraform-provider https://coresolutions.ltd/blog/up-and-running-with-cloudflare-terraform-provider Quick-start guide to managing Cloudflare infrastructure with OpenTofu or Terraform. Wed, 01 Oct 2025 00:00:00 GMT https://coresolutions.ltd/blog/kubernetes-imagepullbackoff-pending-pod-troubleshooting https://coresolutions.ltd/blog/kubernetes-imagepullbackoff-pending-pod-troubleshooting Complete guide to diagnosing and fixing the most common pod deployment failures Mon, 29 Sep 2025 00:00:00 GMT https://coresolutions.ltd/blog/zero-trust-networking-kubernetes-istio-service-mesh https://coresolutions.ltd/blog/zero-trust-networking-kubernetes-istio-service-mesh Zero trust architecture in Kubernetes, from implementation and policy to observability. Tue, 23 Sep 2025 00:00:00 GMT https://coresolutions.ltd/blog/deploy-to-aws-using-github-actions-and-oidc https://coresolutions.ltd/blog/deploy-to-aws-using-github-actions-and-oidc How to securely deploy to AWS from GitHub Actions using OIDC Mon, 08 Sep 2025 00:00:00 GMT https://coresolutions.ltd/blog/testing-opentofu-terraform https://coresolutions.ltd/blog/testing-opentofu-terraform Explore tools and practical strategies for integrating robust testing into your OpenTofu and Terraform workflows. Mon, 01 Sep 2025 00:00:00 GMT https://coresolutions.ltd/blog/up-and-running-with-kubernetes-terraform-provider https://coresolutions.ltd/blog/up-and-running-with-kubernetes-terraform-provider Essential guide to managing Kubernetes resources with OpenTofu or Terraform. Wed, 15 Jan 2025 00:00:00 GMT https://coresolutions.ltd/blog/secrets-management-scale-external-secrets-operator https://coresolutions.ltd/blog/secrets-management-scale-external-secrets-operator Use External Secrets Operator to sync AWS Secrets Manager values into Kubernetes with IRSA, sane refresh policies, and less secret material in git. Sun, 15 Sep 2024 00:00:00 GMT https://coresolutions.ltd/blog/assume-iam-roles-on-eks-the-right-way https://coresolutions.ltd/blog/assume-iam-roles-on-eks-the-right-way How to set up and use IAM Roles for Service Accounts in EKS to securely manage pod-level IAM roles Mon, 20 May 2024 00:00:00 GMT https://coresolutions.ltd/blog/kubernetes-aws-load-balancer-controller https://coresolutions.ltd/blog/kubernetes-aws-load-balancer-controller Lowdown on the AWS Load Balancer Controller for Kubernetes ingress. Wed, 10 Apr 2024 00:00:00 GMT https://coresolutions.ltd/blog/gitops-for-kubernetes-with-argo-cd https://coresolutions.ltd/blog/gitops-for-kubernetes-with-argo-cd Streamline Kubernetes deployments with GitOps and Argo CD. Fri, 15 Mar 2024 00:00:00 GMT