gitops-tenant-onboarding

A setup guide for adding a new application, called a tenant, to a shared Flux CD and Kubernetes platform. It covers deployment files, secrets, security rules, networking, and publishing.

In plain words
What is it for?
Use it to create tenant deployment files, connect stored secrets, meet cluster security and network rules, expose the application through a shared gateway, and register it with the platform.
Why use it?
It reduces the chance of missing one of the many repository and cluster settings required for a new application to run safely alongside others.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/devantler-tech/agent-plugins/gitops-tenant-onboarding
Any agent
npx skills add devantler-tech/agent-plugins --skill gitops-tenant-onboarding
Clone the repo
git clone --depth 1 https://github.com/devantler-tech/agent-plugins

Made for: Claude Code, Codex.

Per session 126 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,707 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00126 $0.02707
Opus 5 $0.00063 $0.01354
Sonnet 5 $0.00025 $0.00541
Haiku 4.5 $0.00013 $0.00271

Measured yesterday against content hash 536795f545e9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

gitops-tenant-onboarding scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/gitops-kubernetes/skills/gitops-tenant-onboarding/SKILL.md · 179 lines

How it starts

The opening of the file, as written. The whole thing — 179 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GitOps Tenant Onboarding

Onboarding a tenant — an application that runs on a shared, multi-tenant Flux cluster from its own repository — follows the same recurring shape every time. The tenant repo builds a container image and publishes its Kubernetes manifests as a signed OCI artifact; the platform pulls that artifact with a Flux OCIRepository + Kustomization and runs it in a dedicated, locked-down namespace. This skill is the agent-facing companion to that pattern: the decisions, the conventions, and — most usefully — the gotchas that make a fresh tenant fail if you miss them.

It is built around an opinionated but industry-standard stack — Flux, External Secrets Operator backed by OpenBao/Vault, Kyverno + PodSecurity, Cilium / Gateway API, cosign — so the steps transfer to any cluster wired the same way; adapt the resource names to your platform.

The two halves

Onboarding always spans two repos, and a tenant is not live until both land:

  1. The tenant repo — created from a tenant template. Ships the shared, framework-agnostic CI/CD plumbing (build → signed publish → release) plus a deploy/ directory of Kubernetes manifests you own and customise.
  2. The platform registration — a small directory in the platform repo (apps/<tenant>/) that grants the tenant a namespace, an identity (a ServiceAccount), RBAC, a network policy, the OpenBao-backed image-pull secret, and the Flux resources that pull and verify the tenant's artifact.

Open each as a PR. The tenant goes live when the platform registration merges and Flux reconciles it — the tenant repo alone does nothing until it is registered.

Tenant repo: the deploy/ manifests

A tenant's deploy/ is a Kustomize overlay. The full set, and what each is for:

Manifest Purpose Drop it when…
deployment.yaml the workload
service.yaml ClusterIP for the app port
httproute.yaml Gateway API HTTPRoute attaching to the shared gateway the app is not HTTP-exposed
poddisruptionbudget.yaml drain-safe maxUnavailable: 1 PDB never — every workload needs one
networkpolicy.yaml re-opens ingress/egress under the cluster's default-deny never on a default-deny cluster
secretstore.yaml + externalsecret.yaml namespaced External Secrets store + secret the tenant needs no app secrets
cluster.yaml CloudNativePG database the tenant has no database
kustomization.yaml lists the above

Read the full file on GitHub · 179 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 179 lines · 126 tokens per session scan A 536795f545e9

Subscribe to this mod's changes

gitops-tenant-onboarding is a skill published in the GitHub repository devantler-tech/agent-plugins (2 stars, last pushed yesterday), licensed Apache-2.0. It adds 126 tokens to every session and 2,707 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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