CloudOps notes, Kubernetes labs, operational runbooks, and architecture decisions by Elvis Rafael Gross.https://rafael-gross.com/en-ushttps://rafael-gross.com/writing/homelab-proxmox-k3s-cluster/https://rafael-gross.com/writing/homelab-proxmox-k3s-cluster/Practical lessons from setting up a 3-node k3s cluster on Proxmox VE — storage, networking, ArgoCD, and the things that broke along the way.Sun, 15 Feb 2026 00:00:00 GMTHomelabkubernetesk3sproxmoxhomelabargocdlonghornmetallbhttps://rafael-gross.com/runbooks/eks-pod-stuck-pending/https://rafael-gross.com/runbooks/eks-pod-stuck-pending/Diagnose why a Kubernetes pod is stuck in Pending and resolve the most common causes: resource constraints, node selector mismatches, missing PVCs, and taint/toleration issues.Sun, 01 Feb 2026 00:00:00 GMTKuberneteskubernetespodsschedulingresourcespvcnodestroubleshootinghttps://rafael-gross.com/runbooks/ec2-instance-unreachable-via-ssm/https://rafael-gross.com/runbooks/ec2-instance-unreachable-via-ssm/Diagnose and resolve an EC2 instance that fails to connect via AWS Systems Manager Session Manager. Covers IAM role, SSM Agent, VPC endpoint, and network path diagnostics.Thu, 15 Jan 2026 00:00:00 GMTAWS CloudOpsec2ssmsession-managervpc-endpointsiamtroubleshootinghttps://rafael-gross.com/writing/aws-cloudops-tagging-strategy/https://rafael-gross.com/writing/aws-cloudops-tagging-strategy/A tag schema that satisfies finance, security, and platform teams without becoming a governance nightmare. Covers mandatory tags, enforcement with AWS Config, and automation.Sat, 10 Jan 2026 00:00:00 GMTAWS CloudOpsawstaggingcost-optimizationgovernanceconfig-rulesiam