helm-charts

Helm charts for Kubernetes. Hosted on GitHub Pages via chart-releaser.

Add the repository

helm repo add teerakarna https://teerakarna.github.io/helm-charts
helm repo update

Available charts

Chart	Description	Version
echoserver	HTTP echo server for testing ingress, load balancing, and network policies	0.2.0
netshoot	Network troubleshooting pod (nicolaka/netshoot) — DNS, connectivity, routing, network policy	0.1.0
sleep	Minimal Alpine pod that sleeps indefinitely — exec in to run commands inside a namespace	0.1.0
dbclient	Database client debug pod — psql, redis-cli, and mysql in one Alpine container	0.1.0
scoutsuite	Multi-cloud security auditing (ScoutSuite) — CronJob/Job for AWS, GCP, Azure and more	0.1.0
kube-bench	CIS Kubernetes Benchmark auditing (kube-bench) — Job/CronJob with ClusterRole	0.1.0
kube-hunter	Kubernetes penetration testing (kube-hunter) — hunt for security weaknesses in-cluster	0.1.0
gonymizer	PostgreSQL data anonymization (Gonymizer) — dump, anonymize, and reload PII/PHI for QA	0.1.0
bombardier	Fast HTTP/S load testing (bombardier) — Job/CronJob to benchmark in-cluster services	0.1.0
trivy	Vulnerability scanner (Trivy) — Job/CronJob to scan images, filesystems, or entire clusters	0.1.0
k6	Scriptable load testing (Grafana k6) — Job/CronJob with a ConfigMap-mounted JS test script	0.1.0
toxiproxy	Network fault injection proxy (Toxiproxy) — Deployment to inject latency, packet loss, and timeouts	0.1.0
zaproxy	Web application security scanner (OWASP ZAP) — Job/CronJob with Automation Framework plan	0.1.0

Usage

# HTTP echo server — test ingress and routing
helm install echo teerakarna/echoserver
kubectl port-forward svc/echo-echoserver 8080:80
curl http://localhost:8080/

# Network troubleshooting pod — exec in to diagnose DNS/connectivity issues
helm install netshoot teerakarna/netshoot -n <namespace>
kubectl exec -it -n <namespace> \
  $(kubectl get pod -n <namespace> -l app.kubernetes.io/instance=netshoot -o jsonpath="{.items[0].metadata.name}") \
  -- bash

# Minimal debug pod — exec in to run arbitrary commands inside a namespace
helm install debug teerakarna/sleep -n <namespace>
kubectl exec -it -n <namespace> \
  $(kubectl get pod -n <namespace> -l app.kubernetes.io/instance=debug -o jsonpath="{.items[0].metadata.name}") \
  -- sh

# Database client pod — psql, redis-cli, mysql
helm install db teerakarna/dbclient \
  --set image.repository=ghcr.io/YOUR_USERNAME/dbclient \
  -n <namespace>
kubectl exec -it -n <namespace> \
  $(kubectl get pod -n <namespace> -l app.kubernetes.io/instance=db -o jsonpath="{.items[0].metadata.name}") \
  -- bash

# CIS Kubernetes Benchmark — one-off audit
helm install kb teerakarna/kube-bench
kubectl wait --for=condition=complete job -l app.kubernetes.io/instance=kb --timeout=10m
kubectl logs -l app.kubernetes.io/instance=kb

# Kubernetes penetration test — hunt from inside the cluster
helm install hunter teerakarna/kube-hunter
kubectl logs -l app.kubernetes.io/instance=hunter

# HTTP load test — benchmark an in-cluster service
helm install load teerakarna/bombardier \
  --set image.repository=ghcr.io/YOUR_USERNAME/bombardier \
  --set target.url=http://echo-echoserver.default.svc.cluster.local/
kubectl logs -l app.kubernetes.io/instance=load

# Vulnerability scan — scan an image for HIGH/CRITICAL CVEs
helm install scan teerakarna/trivy \
  --set target=nginx:latest
kubectl logs -l app.kubernetes.io/instance=scan

# Scriptable load test — run a k6 JS script against an in-cluster service
helm install k6 teerakarna/k6 \
  --set env.TARGET_URL=http://echo-echoserver.default.svc.cluster.local/
kubectl logs -l app.kubernetes.io/instance=k6

# DAST scan — spider and passive-scan a service with OWASP ZAP
helm install zap teerakarna/zaproxy \
  --set target.url=http://echo-echoserver.default.svc.cluster.local/
kubectl logs -l app.kubernetes.io/instance=zap -f

# Network fault injection — wrap a service with Toxiproxy for chaos testing
helm install toxi teerakarna/toxiproxy \
  --set 'proxies[0].name=redis' \
  --set 'proxies[0].listen=0.0.0.0:26379' \
  --set 'proxies[0].upstream=redis-master.default.svc.cluster.local:6379' \
  --set 'proxies[0].enabled=true'
# Add latency via the API:
kubectl port-forward svc/toxi-toxiproxy 8474:8474
curl -X POST http://localhost:8474/proxies/redis/toxics \
  -d '{"name":"latency","type":"latency","attributes":{"latency":100}}'

Development

Prerequisites

• Helm >= 3.14
• helm-unittest plugin
• chart-testing (ct)

helm plugin install https://github.com/helm-unittest/helm-unittest
pip install yamllint

Lint a chart

ct lint --config ct.yaml --charts <chart-name>
ct lint --config ct.yaml  # lint all changed charts

Run unit tests

helm unittest <chart-name>
helm unittest kube-bench kube-hunter dbclient bombardier

Render templates locally

helm template my-release <chart-name>
helm template my-release kube-bench
helm template my-release bombardier --set target.url=http://example.com/

Releasing

Charts are released automatically on merge to main via chart-releaser-action.

To release a new chart version:

1. Bump version in the chart's Chart.yaml
2. Open a PR — CI lints and runs unit tests
3. Merge to main — chart-releaser packages the chart, creates a GitHub Release, and updates the Helm repository index on the gh-pages branch

First-time setup: After the first release workflow runs and creates the gh-pages branch, enable GitHub Pages in the repo settings pointing to that branch.

Supply chain security

All chart packages and Docker images are signed with cosign using keyless signing (GitHub Actions OIDC). No key management required — signatures are verifiable against the public Rekor transparency log.

Verify a chart package

Download the .tgz and .bundle files from the GitHub Release assets, then:

cosign verify-blob \
  --bundle kube-bench-0.1.0.tgz.bundle \
  --certificate-identity-regexp "https://github.com/teerakarna/helm-charts/.github/workflows/release.yml@refs/heads/main" \
  --certificate-oidc-issuer https://token.actions.githubusercontent.com \
  kube-bench-0.1.0.tgz

Verify a Docker image

cosign verify \
  --certificate-identity-regexp "https://github.com/teerakarna/helm-charts/.github/workflows/build-.*@refs/heads/main" \
  --certificate-oidc-issuer https://token.actions.githubusercontent.com \
  ghcr.io/teerakarna/dbclient:latest

Replace dbclient with scoutsuite or bombardier as appropriate.

Repository structure

{chart-name}/             # One directory per chart
  Chart.yaml
  values.yaml
  templates/
  tests/                  # helm-unittest test files
  docker/                 # Dockerfile (charts with custom images)
.github/workflows/
  ci.yml                  # PR: ct lint + helm unittest
  release.yml             # Push to main: chart-releaser
  build-*.yml             # Manual: build and push custom Docker images
ct.yaml                   # chart-testing config
artifacthub-repo.yml      # ArtifactHub metadata