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t12-pybash/README.md

Ciarán Donegan — Lead SRE

Infrastructure engineer with 14 years across fintech, blockchain, and enterprise cloud — Kubernetes, multi-cloud IaC, eBPF networking, and AI inference infrastructure. AWS Certified Solutions Architect.


What I build

homelab-gitops — 5-node bare-metal Kubernetes cluster with Cilium eBPF networking, Flux GitOps, and a fully airgapped private AI platform: Ollama GPU inference, LiteLLM, Open-WebUI, Qdrant RAG pipeline. Falco runtime detection, SOPS-encrypted secrets, default-deny NetworkPolicies, Velero backups.

sre-cli — Custom SRE CLI and MCP server: live Prometheus/Alertmanager queries, semantic runbook search over a local knowledge base (Qdrant + Ollama embeddings), incident lifecycle management. Runs entirely on-cluster — no data leaves the environment.

fullnode-infrastructure — Production-grade OP Stack (Ethereum L1/L2) node infrastructure on AWS EKS. Kubernetes StatefulSets, Terraform, Cilium network policies, custom Prometheus blockchain metrics exporter.


Stack

Cloud AWS (CSA) · Azure · GCP · OCI · Bare metal (OVH, Equinix, Hetzner)
Kubernetes kubeadm · EKS · Talos · Flux CD · ArgoCD · Helm · Kustomize
Networking Cilium · eBPF · Hubble · Calico · WireGuard · pfSense · F5
IaC Terraform · Terragrunt · Ansible · Bicep
Security Falco · FedRAMP · SOC 2 · PCI DSS · SOPS · NetworkPolicies
Observability Prometheus · Grafana · Loki · Alertmanager · custom exporters
AI Infra Ollama · LiteLLM · Qdrant · Redpanda · RAG pipelines · GPU scheduling
Languages Python · Go · Bash

t-12.io · LinkedIn · Cork, Ireland

Pinned Loading

  1. fullnode-infrastructurefullnode-infrastructurePublic

    Production-grade OP Stack (Ethereum L1/L2) node infrastructure — Kubernetes, Terraform, Prometheus/Grafana monitoring

    Python

  2. tracker-app-gitopstracker-app-gitopsPublic

    GitOps manifests for tracker-app — Flux CD, Kustomize overlays for dev and prod environments

  3. azure-bicepazure-bicepPublic

    Azure infrastructure as code using Bicep — resource provisioning and deployment automation

    Bicep