Netflux on Kubernetes

This repo contains Kubernetes manifests for deploying various self-hosted services to the netflux.io domain.

All of the manifests are built using Kustomize. I avoid Helm charts whenever possible, but when they're needed (Prometheus, Grafana, etc) the charts are inflated into this repository for visibility and auditability.

The manifests are deployed to a DigitalOcean managed k8s cluster in production, and can be easily applied to a local cluster for testing and development.

Of course all this would in many ways be simpler with a docker-compose.yml shipped to a virtual host, which is exactly how everything used to be deployed. This project is mostly a fun learning exercise.

Git

The main git repo is hosted at: https://git.netflux.io/rob/netflux-kubernetes

It is also mirrored on GitHub: https://github.com/rfwatson/netflux-kubernetes

Building

The manifests can be built with:

make dev

and applied with:

make dev | kubectl apply -f -

Linting

The manifests are linted with kube-linter:

kube-linter lint .

Helm charts

When required, Helm charts can be inflated with:

# install or update the prometheus helm chart:
make inflate name=prometheus chart=prometheus-community/prometheus

An optional values file can be provided, e.g. deploy/base/values/prometheus.yaml.

URLs

URLs to some of the deployed services:

• git.netflux.io
• tube.netflux.io
• element.netflux.io

Cluster setup

Development

To initialize the local PostgreSQL database:

# Ensure PostgreSQL helm chart is installed (only used in development env):
cd deploy
make dev | k apply -l app.kubernetes.io/name=postgresql -f -

kubectl port-forward dev-postgresql-0 5432
psql -h localhost -f ../kind/bin/setup-dev-db.sql

To connect locally to the Nginx ingress controller:

sudo -E kubectl port-forward dev-ingress-nginx-controller-abcdef1234-ab123 80:80 443:443 22:22

Or

sudo -E kubectl port-forward $(kubectl get pods | grep "dev-ingress-nginx-controller.*Running" | awk '{print $1}') 80:80 443:443 22:22

Additional dependencies

• envfilesubst link