Platform - IMTI

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Professional notes by Craig Johnston
long-form, short-form, working drafts · since 2008

VOL. XIX · MMXXVI
140 NOTES IN PRINT

Tag: Platform

27 NOTES

One Cluster Across Clouds and Your Garage: Hybrid k3s With WireGuard

A single Kubernetes cluster spanning cloud regions and your own hardware, encrypted over the public internet

KUBERNETESFOSSPLATFORMK3S

What Happened to the Blockchain Chapter

Why the chapter is cut from this rebuild, and where tamper-evidence lives in 2026

KUBERNETESFOSSPLATFORMBLOCKCHAIN

Serverless Without the Cloud: Knative on Your Cluster

Scale-to-zero functions you own, after OpenFaaS moved the good parts behind a paywall

KUBERNETESFOSSPLATFORMKNATIVE

Write-Heavy and Always On: Cassandra and Scylla on Kubernetes

Running Cassandra and Scylla on K8ssandra and the Scylla Operator after Rook dropped its own

KUBERNETESFOSSPLATFORMCASSANDRA

Event-Driven Object Processing: Bucket Events to Jobs

Object storage that triggers work, a self-hosted answer to S3 plus Lambda on your own cluster

KUBERNETESFOSSPLATFORMSEAWEEDFS

A Multi-User Data Lab: JupyterHub on Your Platform

Self-hosted notebooks for the whole team, on Keycloak SSO, wired to the lakehouse and every data source you own

KUBERNETESFOSSPLATFORMJUPYTERHUB

IoT Ingest You Own: MQTT With Mosquitto on Kubernetes

Lightweight device messaging into the platform, bridged to Kafka, with the Mosquitto 2.0 change the old guides miss

KUBERNETESFOSSPLATFORMMQTT

See the Whole Platform: Prometheus, Grafana, Loki, and OpenTelemetry

Self-hosted observability for everything you built, on the open standard instead of a per-host APM bill

KUBERNETESFOSSPLATFORMOBSERVABILITY

Cilium: One eBPF Data Plane for Networking, Security, and Encryption

The CNI that replaced Weave Net, kube-proxy, and a hand-rolled WireGuard overlay with a single component

KUBERNETESFOSSPLATFORMNETWORKING

containerd Without Docker: the Runtime Under Your Cluster

The container runtime the kubelet actually uses, and how to configure and debug it now that the Docker shim is gone

KUBERNETESFOSSPLATFORMCONTAINERD

GitOps: Git as the Source of Truth for Your Cluster

Argo CD and Flux, the deployment half the 2020 book left out, with manifests reconciled from a repo you own

KUBERNETESFOSSPLATFORMGITOPS

Build Images Inside Your Cluster, Without the Docker Socket

Rootless container builds in CI with BuildKit, and where supply-chain guardrails belong

KUBERNETESFOSSPLATFORMBUILDKIT

Your Git Forge Belongs on Your Cluster: Forgejo

Self-hosted source, CI/CD, and a registry, on the lightweight fork that left its for-profit parent

KUBERNETESFOSSPLATFORMDEVOPS

The Agent Gateway to Your Platform: mcp-data-platform

An Apache-2.0 MCP server that gives frontier models access and grounded context to everything you built

KUBERNETESFOSSPLATFORMMCP

A Data Catalog Your Agents Can Read: DataHub

Metadata, lineage, and a business glossary over the whole platform

KUBERNETESFOSSPLATFORMDATAHUB

Self-Hosted BI with Apache Superset

Dashboards and SQL exploration over the lakehouse and Postgres, a Tableau replacement on the platform's SSO

KUBERNETESFOSSPLATFORMSUPERSET

Self-Hosted Integration with Apache NiFi

Visual dataflow and ETL on your own cluster, instead of Workato and the iPaaS vendors

KUBERNETESFOSSPLATFORMNIFI

Self-Hosted SSO with Keycloak

One login for every user-facing tool on the platform, instead of renting Okta or Auth0

KUBERNETESFOSSPLATFORMKEYCLOAK

Your Own Snowflake: A Trino and Iceberg Lakehouse

SQL analytics over open table formats on the object storage you own

KUBERNETESFOSSPLATFORMTRINO

Self-Hosted S3 with SeaweedFS

S3-compatible object storage for the data lake, backups, and the lakehouse

KUBERNETESFOSSPLATFORMSTORAGE

A Search Layer You Own: OpenSearch on Kubernetes

The index for the platform, on the Apache-licensed fork of Elasticsearch

KUBERNETESFOSSPLATFORMOPENSEARCH

Kafka Without ZooKeeper: KRaft on Kubernetes with Strimzi

A real-time event backbone, without the separate ZooKeeper ensemble to operate

KUBERNETESFOSSPLATFORMKAFKA

A Database You Own: Postgres with CloudNativePG

High-availability PostgreSQL on your own storage, without the managed bill

KUBERNETESFOSSPLATFORMPOSTGRESQL

Ingress-Nginx Retired. Meet the Gateway API.

Exposing services and automating TLS in 2026, with Cilium and cert-manager

KUBERNETESFOSSPLATFORMNETWORKING

Storage the Cluster Owns: Rook and Ceph

Portable block and shared-filesystem persistence for stateful services, no managed disks required

KUBERNETESFOSSPLATFORMSTORAGE

Build a Kubernetes Cluster You Own

The vendor-neutral substrate for a self-hosted platform: kubeadm, containerd, and Cilium on generic VMs

KUBERNETESFOSSPLATFORMDEVOPS

Build a Better Platform Than You're Renting

Cloud-grade data platforms from FOSS on Kubernetes, now that agents run the hard part

KUBERNETESDATAAIFOSS