merge: OIDC issuer/callback URLs become per-environment
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@@ -1758,3 +1758,92 @@ into a transient hard Kustomization failure.
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- **Prod's source URL cannot work on a cold prod cluster** — split-horizon answers the whole zone
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with `${GATEWAY_VIP}`, so prod would resolve `gitea.home.keithjackson.dev` to its own gateway.
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Bring-up needs a temporary source and a cutover, as `docs/05` describes for dev's own Phase-6.
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## 2026-09-07 — LIVE BUG: prod's OIDC clients were pointed at DEV's Keycloak. Secrets are a substitution blind spot.
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The operator could not log in to Headlamp on prod:
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```
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Get "https://keycloak.home.keithjackson.dev/realms/homelab/.well-known/openid-configuration":
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dial tcp 192.168.1.53:443: i/o timeout
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```
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`keycloak.home.keithjackson.dev` is **dev's** Keycloak. It resolves to `192.168.1.53`, on the dev
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LAN behind pfSense; prod lives on `192.168.2.0/24` (pfSense's WAN) and cannot route there, so the
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discovery fetch simply hung until it timed out.
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### Root cause — the class, not the instance
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**Flux's `${BASE_DOMAIN}` postBuild substitution rewrites the RENDERED MANIFEST TEXT. It can never
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reach inside a SOPS-encrypted Secret.** Environment-specific URLs had been stored *inside* two
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encrypted Secrets purely because it was convenient to keep one blob per app:
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| File | Buried, un-substitutable values |
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|---|---|
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| `platform/headlamp/headlamp-oidc-credentials.sops.yaml` | `OIDC_ISSUER_URL`, `OIDC_CALLBACK_URL` |
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| `apps/wave-1/semaphore-bootstrap-secret.sops.yaml` (`oidc-providers-json`) | the realm issuer + the OIDC redirect URI |
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Both were frozen at the apex `home.keithjackson.dev`. **Dev IS the apex, so dev was correct by
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coincidence** — the values were never per-environment, they just happened to match one environment.
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Prod was wrong from the first reconcile. Semaphore on prod was broken the same way and nobody had
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noticed, because nobody had tried prod SSO yet.
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This is the same failure shape as the 2026-09-01 nextcloud guard: **a value that silently resolves
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to something plausible is worse than one that fails.** `StrictPostBuildSubstitutions` cannot catch
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it either — there is no `${...}` left unresolved to complain about; the ciphertext never contained
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one.
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### The rule this establishes
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> **Non-secret, environment-specific values MUST NOT live inside an encrypted Secret.** Issuer URLs,
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> callback URLs, redirect URIs and hostnames are public. Encrypt the secret half only, and template
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> the rest where `${BASE_DOMAIN}` can reach it.
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### The fix
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- **Headlamp** — `OIDC_ISSUER_URL` / `OIDC_CALLBACK_URL` moved to the HelmRelease's
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`spec.values.env`, templated `${BASE_DOMAIN}`. The Secret keeps `OIDC_CLIENT_SECRET` +
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the environment-invariant `OIDC_CLIENT_ID` / `OIDC_SCOPES`, still `envFrom`'d.
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**Exactly one source per variable** — an explicit `env:` entry silently outranks the same name
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arriving via `envFrom`, so the two sets deliberately do not overlap.
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Side effect, intended: naming `OIDC_CALLBACK_URL` in `env:` makes chart 0.41.0 finally emit
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`-oidc-callback-url=$(OIDC_CALLBACK_URL)`; it gates that arg on `env:`/`config.oidc`, which a
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Secret key alone never tripped — so the Secret's callback URL had been dead weight all along.
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- **Semaphore** — the `SEMAPHORE_OIDC_PROVIDERS` JSON is now a plaintext literal in
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`catalog/semaphore.yaml` (re-rendered to the `apps/wave-1` golden). Only the client secret stays
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encrypted, in its own key `oidc-client-secret`, and the **kubelet** splices it back via
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dependent-env-var expansion: `$(SEMAPHORE_OIDC_CLIENT_SECRET)` resolves against the `secretKeyRef`
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env var declared immediately above it. **Order is load-bearing** — the kubelet resolves `env` in
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list order and leaves a forward reference as literal text. `flux envsubst` ignores `$(...)`, so
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the two expansion layers do not collide (the `$${VAR}` escape in `apps/wave-1/nextcloud.yaml`
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documents the one form that DOES need escaping).
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### Proof
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Rendered per overlay (`kubectl kustomize --load-restrictor LoadRestrictionsNone`, then
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`flux envsubst --strict` with that overlay's `cluster-vars`), plus `helm template` of headlamp
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0.41.0 against the substituted values:
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| | dev | prod |
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|---|---|---|
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| Headlamp `OIDC_ISSUER_URL` | `https://keycloak.home.keithjackson.dev/realms/homelab` | `https://keycloak.prod.home.keithjackson.dev/realms/homelab` |
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| Headlamp `OIDC_CALLBACK_URL` | `https://headlamp.home.keithjackson.dev/oidc-callback` | `https://headlamp.prod.home.keithjackson.dev/oidc-callback` |
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| Semaphore `provider_url` | `https://keycloak.home.keithjackson.dev/realms/homelab` | `https://keycloak.prod.home.keithjackson.dev/realms/homelab` |
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| Semaphore `redirect_url` | `https://semaphore.home.keithjackson.dev/api/...` | `https://semaphore.prod.home.keithjackson.dev/api/...` |
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Dev's values are byte-identical to what it runs today — this change moves prod only.
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### [parity] the apiserver invariant HOLDS
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Prod's kube-apiserver `oidc-issuer-url` is an **install-time k3s flag** derived from
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`k3s_base_domain` (`infra/ansible/inventory/group_vars/k3s_prod/vars.yml` = `prod.home.keithjackson.dev`),
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not from `cluster-vars` — it cannot read the Flux variable. Headlamp forwards the user's `id_token`
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to the apiserver, so the two must name the same issuer. After this change they do, in both
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environments, because both derive from the same per-environment domain. Unchanged risk, now written
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down in `platform/headlamp/README.md`: moving one without the other 401s every request.
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### Also fixed for the next person
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`headlamp-oidc-credentials.sops.yaml.example` used to *teach* the broken pattern — it listed
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`OIDC_ISSUER_URL` and `OIDC_CALLBACK_URL` as keys to fill in. It now says, in the file, that adding
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either key back re-breaks prod.
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@@ -5,6 +5,15 @@
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# credential from its own namespace (a Pod cannot read a Secret in another namespace).
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# access-key-encryption: FIXED base64 32-byte AES key Semaphore uses to encrypt stored SSH keys /
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# credentials; MUST stay stable across restarts or stored secrets become undecryptable.
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# oidc-client-secret: the Keycloak `semaphore` CONFIDENTIAL client secret, and ONLY that. It MIRRORS
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# `semaphore-client-secret` in platform/keycloak/keycloak-realm-clients.sops.yaml (the realm import
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# injects that copy into the client), same cross-namespace mirror pattern as db-password above.
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# It replaced the former `oidc-providers-json` key (2026-09-07): that key held the WHOLE
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# SEMAPHORE_OIDC_PROVIDERS blob, which buried the environment-specific realm-issuer and redirect
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# URLs inside ciphertext where Flux's ${BASE_DOMAIN} postBuild substitution could not reach them,
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# so prod ran with dev's URLs. Those URLs are PUBLIC and now live in plaintext in
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# catalog/semaphore.yaml (rendered to apps/wave-1/semaphore.yaml); the kubelet splices THIS value
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# back into the blob via $(SEMAPHORE_OIDC_CLIENT_SECRET). Only the secret half is encrypted.
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# Recover: infra/devcontainer/dev.sh run sops -d apps/semaphore-bootstrap-secret.sops.yaml
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apiVersion: v1
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kind: Secret
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@@ -15,11 +24,11 @@ metadata:
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app.kubernetes.io/name: semaphore
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type: Opaque
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stringData:
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admin-username: ENC[AES256_GCM,data:uD/vO9A9MjerFg==,iv:i/NAqVD6rWg9oWWSGBrRkxzwcPp2IW1HLIKY0pdcPPg=,tag:r27tKLAJ+ydE7Ty3ccMNUw==,type:str]
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admin-password: ENC[AES256_GCM,data:544nWY1UmBnlsdPJAQZJMXRumu4W9X7UXZvZ6vHN/ArjRgLXKTArOe5JkT/nNrNw,iv:AC1DDbZj2HfpU19EjzA7T+WpIaR4nZc3PNN61y8bAzU=,tag:r28LFi5w6ZeCCaRaX2jRdg==,type:str]
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db-password: ENC[AES256_GCM,data:ySkdvaGRCW9fMQqChs5l8dY4zCG19i4HOEinRC48mgLuh9WOrjd16T6jwFgiwB55,iv:+1gztJ22HbwgQJiolZMMWOcKIsxrBJpnruJdtxdooOU=,tag:8CfJGwyPTjDGyr0CvalXMQ==,type:str]
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access-key-encryption: ENC[AES256_GCM,data:1YAMLo1nVkpJWZc+KBZ7B4ia+Y8P+xMyOhHMcEGGJOXd3o+WC5FqirLBVh4=,iv:j28ozeaDhGWDjoaxFOhn2t9YbYE7L3ah/Mfi+i2DWwY=,tag:czG9Wxc/7Nsuh1W5iATOww==,type:str]
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oidc-providers-json: ENC[AES256_GCM,data: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,iv:jbfVdrrZ9fGiOxhQeoTJfFg1QwiOMkoQyaadiVfxX/w=,tag:JkepcRs34EuEgNb4buTTDQ==,type:str]
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admin-username: ENC[AES256_GCM,data:ju3wVdjNzRUP/w==,iv:d/5ZxgQZ5bympu3gT2ck3DJy9iUPPBAtZYsJvD3To7I=,tag:0UtBaDVqNSK4RCJrQicchw==,type:str]
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admin-password: ENC[AES256_GCM,data:pxIwpgh3BoND2TI0mPTixOTJoictzT77dqtuRdMKgY/2WaW4wM1Ra6H6n/dxnyR2,iv:eYbFQGFYVJsnYGwn6cOI3BgAdzMcin9YggAhiuL+xqM=,tag:/sPWGv4gue0vjc2nMk7wWA==,type:str]
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db-password: ENC[AES256_GCM,data:hBFpWXdpk1R5a23Pntup03t56NBRPS+SZU8CrHVb/ypIaIpgf7kjYtVy6nhTF6u0,iv:eBzoQgH5ZhWWpfKZ6AQmwaSal5QaiuN9gfexQ7GsVFs=,tag:j2k8EwhKDlj/Ud6O39ioVQ==,type:str]
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access-key-encryption: ENC[AES256_GCM,data:SKtAV4HxJ9pNYDqUK/1uOdI1rtMji3pTfprI2rhQxFQyhc6dFlhqI+OUEcY=,iv:rKCP+FLidcOltOwmMMcO5M8tz4qiifIMI+W5soGO2M8=,tag:HaHzkX/JI+9wmcg2SD9GAQ==,type:str]
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oidc-client-secret: ENC[AES256_GCM,data:uCo7TNzbM2QKw9ie+xzyUG9MFKco1OAlwr5qPn/AGpNvo1YyXSfbZyyM0CLJ1NS821hGg5Zr/m3R/xpy84s3FQ==,iv:O8a4haskufpmorPaxOkJ1Q99Y5GTlzmDFJAsHS+irLk=,tag:VojJpA9jNMbNQmIe1Qr44w==,type:str]
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sops:
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kms: []
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gcp_kms: []
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@@ -29,14 +38,14 @@ sops:
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- recipient: age175l8mdpdfu7hq0aml3exs3gykarwjmuvr23sq56s3wjejnyk44wsp4mfzg
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enc: |
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-----BEGIN AGE ENCRYPTED FILE-----
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YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBuRDlqRFJ0dk14UHluSGRP
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S1pESy9PWlpMakU0aTkzNVhqUGdtbWNEdTJjCm5RNG14azJHc28rdEJ4L0RzR0xO
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MGRocGZ1V1JZTENWQkN3VGZzamp2eTgKLS0tIGt6QkNNaW5hdTBJVHY0SVo5d3JX
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elp0SWxHcjg0RWF3aW9mWTJHZ0lhcUEKc0rU5VilAVDleCwqq4SOF+Y9sniu1Pka
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w/MGDA9THSB0b+YgWRWiX/KiimFqp0ZFODOJ9cHVwFGY71+VadPwOg==
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YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSAyTzF6NTBtcFVWK1Vtc0I2
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VGdySHBsRGgvc1h0VzgvQ01xYVBJV3g2Q1NRCjJyZHVYZGtuamo1MFJHWlBwWkxt
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cHA4VkY1TkRpN3M4UTdMOWZTbFVGemMKLS0tIGVNdDBrWVJveU56VjVBU2JWdHF4
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RGtaYStXYUpONTZjZCtmM0NyZ3Rka1UKIQpmQai8dz+uRAsXxyeuGaRlRwsFqIPQ
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9AfrZJcslYwlaK3ptm1oqaCdrlxcMar2nI7thSqzbLe+e1nzA2z7vQ==
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-----END AGE ENCRYPTED FILE-----
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lastmodified: "2026-08-27T22:12:32Z"
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mac: ENC[AES256_GCM,data:nHftJTGnTr0O5h8yGXwgz3eflggXJfIXM3m8n3bzDJE/P4nvSpZzFeMb+sc2on+AL+t+SeKrIl8blzm33XsQ1lkaY85Zm+bc5cnED1g04BMDVmmK3brh/8w50Bp2wPEVzb4I01MDzhhyIbOYg7pFvZAH3/VuqvM1t6XmfF1NrOA=,iv:4KBa9PH/dfdGwLC16RenZIVB6BtSoGo6x3qt3h1R43I=,tag:KULiA1klP/RZMNigkloGDA==,type:str]
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lastmodified: "2026-09-07T07:01:50Z"
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mac: ENC[AES256_GCM,data:Xutm1rQt57J4RILElD8FkNOsQT1HK5jZlPtqqLyZ/VqOoDwo+IS1wp7hROprlUvQC0bUXy79tRRIl5Q0CCOD+fvAGIdmade+vB7qXlYN6Q1441dGhuSTPvckso6FaB2ddRjKhKGLc/Z4bJoz9VaRNNxJNpWXIrENTg+I+QhNhlo=,iv:klJOrEQ6QN5dTGkQfGnbMbgCWsgWwZPb5YXDMeWeE34=,tag:fuJr4t3Tt3dT9u3/0SFo8Q==,type:str]
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pgp: []
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encrypted_regex: ^(data|stringData)$
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version: 3.9.4
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@@ -118,11 +118,13 @@ spec:
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key: access-key-encryption
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- name: SEMAPHORE_PORT
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value: :3000
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- name: SEMAPHORE_OIDC_PROVIDERS
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- name: SEMAPHORE_OIDC_CLIENT_SECRET
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valueFrom:
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secretKeyRef:
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name: semaphore-bootstrap
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key: oidc-providers-json
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key: oidc-client-secret
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- name: SEMAPHORE_OIDC_PROVIDERS
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value: '{"keycloak":{"display_name":"Keycloak","provider_url":"https://keycloak.${BASE_DOMAIN}/realms/homelab","client_id":"semaphore","client_secret":"$(SEMAPHORE_OIDC_CLIENT_SECRET)","redirect_url":"https://semaphore.${BASE_DOMAIN}/api/auth/oidc/keycloak/redirect","scopes":["openid","profile","email"],"username_claim":"preferred_username","email_claim":"email","name_claim":"name","order":1}}'
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volumeMounts:
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- name: config
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mountPath: /etc/semaphore
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+31
-11
@@ -78,16 +78,34 @@ env:
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# (util ConfigType `oidc_providers`, env-tagged SEMAPHORE_OIDC_PROVIDERS). The value is a single
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# JSON blob for the `keycloak` provider — provider_url is the homelab realm issuer (auto-discovery),
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# client_id=semaphore, redirect_url=/api/auth/oidc/keycloak/redirect, claims map to the realm's
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# token. It CONTAINS the confidential client secret, so the whole blob is held SOPS-encrypted in the
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# semaphore-bootstrap Secret (key oidc-providers-json; same secret value SOPS-held in
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# keycloak-realm-clients) and injected here by reference — never in cleartext. The name is NOT a
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# kubelet service-link var (those are SEMAPHORE_SERVICE_HOST / SEMAPHORE_PORT_*), so no collision.
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# The LOCAL SEMAPHORE_ADMIN above stays as the break-glass path (docs/15). ---
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- name: SEMAPHORE_OIDC_PROVIDERS
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# token. The name is NOT a kubelet service-link var (those are SEMAPHORE_SERVICE_HOST /
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# SEMAPHORE_PORT_*), so no collision. The LOCAL SEMAPHORE_ADMIN above stays break-glass (docs/15).
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#
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# PER-ENVIRONMENT URLS (2026-09-07 fix). The blob USED to live whole inside the SOPS-encrypted
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# semaphore-bootstrap Secret (key `oidc-providers-json`) because it CONTAINS the confidential
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# client secret. That hid two environment-specific, NON-SECRET URLs — the realm issuer and the
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# redirect URI — inside ciphertext, where Flux's ${BASE_DOMAIN} postBuild substitution CANNOT
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# reach them. Both were frozen at the apex `home.keithjackson.dev`, so PROD (BASE_DOMAIN =
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# prod.home.keithjackson.dev) pointed its OIDC at DEV's Keycloak — unroutable from prod's
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# 192.168.2.0/24 (the identical root cause as the Headlamp login timeout; see
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# platform/headlamp/README.md). Dev was only ever "right" because dev IS the apex.
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#
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# THE SPLIT: the URLs are public, so the blob is now a PLAINTEXT literal here and gets
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# ${BASE_DOMAIN}-substituted per environment like every other hostname. Only the confidential
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# client secret stays SOPS-encrypted, in its own key (`oidc-client-secret`), and is spliced back
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# in by the KUBELET's dependent-env-var expansion: an env `value` may reference an EARLIER env
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# var of the same container as $(NAME), and secretKeyRef-sourced vars are eligible. So
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# SEMAPHORE_OIDC_CLIENT_SECRET MUST STAY IMMEDIATELY ABOVE — the kubelet resolves env in list
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# order, and a reference to a not-yet-defined name is left as the LITERAL text $(...). It is
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# fail-loud in the way that matters: if the Secret key is missing the Pod never starts
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# (CreateContainerConfigError), rather than silently authenticating against nothing. ---
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- name: SEMAPHORE_OIDC_CLIENT_SECRET
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valueFrom:
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secretKeyRef:
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name: semaphore-bootstrap
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key: oidc-providers-json
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key: oidc-client-secret
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- name: SEMAPHORE_OIDC_PROVIDERS
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value: '{"keycloak":{"display_name":"Keycloak","provider_url":"https://keycloak.${BASE_DOMAIN}/realms/homelab","client_id":"semaphore","client_secret":"$(SEMAPHORE_OIDC_CLIENT_SECRET)","redirect_url":"https://semaphore.${BASE_DOMAIN}/api/auth/oidc/keycloak/redirect","scopes":["openid","profile","email"],"username_claim":"preferred_username","email_claim":"email","name_claim":"name","order":1}}'
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# The semaphoreui/semaphore image runs as the non-root user UID 1001 / GID 0 (tini -> server-wrapper),
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# and on boot the wrapper writes its generated config.json into the config dir. A mounted Longhorn PVC
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# is root:root, so UID 1001 cannot write it -> the pod panics ("permission denied"). fsGroup=1001 makes
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@@ -117,10 +135,12 @@ auth:
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groups:
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- platform-admins # access scoped to an authorized group (R-IDP-06)
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# WIRED (native OIDC): the Keycloak `semaphore` confidential client (platform/keycloak/keycloak-realm-
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# import.yaml + live kcadm) is consumed via the SEMAPHORE_OIDC_PROVIDERS env (JSON blob held encrypted
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# in the semaphore-bootstrap Secret, oidc-providers-json). The `groups` claim is exposed for
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# authorization (R-IDP-06). Semaphore KEEPS its LOCAL admin as the break-glass path so an IdP outage
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# never locks the operator out (docs/15 "Availability caveat"). No secret is embedded here.
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# import.yaml + live kcadm) is consumed via the SEMAPHORE_OIDC_PROVIDERS env — a PLAINTEXT JSON blob
|
||||
# (see `env` above) whose per-environment URLs are ${BASE_DOMAIN}-substituted, with the confidential
|
||||
# client secret spliced in at runtime from the semaphore-bootstrap Secret key `oidc-client-secret`.
|
||||
# The `groups` claim is exposed for authorization (R-IDP-06). Semaphore KEEPS its LOCAL admin as the
|
||||
# break-glass path so an IdP outage never locks the operator out (docs/15 "Availability caveat").
|
||||
# No secret is embedded here.
|
||||
update:
|
||||
channel: stable # R-UPD-01
|
||||
range: ">=2.19.0 <3.0.0" # stay on the 2.x stable line
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
# Headlamp — Kubernetes dashboard (Keycloak OIDC + per-user RBAC)
|
||||
|
||||
Headlamp is served at `https://headlamp.home.keithjackson.dev` behind the shared Gateway
|
||||
Headlamp is served at `https://headlamp.${BASE_DOMAIN}` behind the shared Gateway
|
||||
(wildcard TLS), with **native Keycloak OIDC login** and **per-user RBAC** (ADR-0014, docs/15).
|
||||
|
||||
## How per-user RBAC works (end to end)
|
||||
@@ -33,6 +33,49 @@ carry `aud=[headlamp, kubernetes]`:
|
||||
|
||||
This keeps the apiserver OIDC config untouched (preferred over widening `--api-audiences`).
|
||||
|
||||
## Where the OIDC config comes from (two sources, no overlap)
|
||||
|
||||
The container needs five env vars, and their **names are load-bearing**: the chart's args reference
|
||||
them via `$(...)` (`-oidc-idp-issuer-url=$(OIDC_ISSUER_URL)`, `-oidc-client-id=$(OIDC_CLIENT_ID)`, …).
|
||||
They must be exactly `OIDC_CLIENT_ID`, `OIDC_CLIENT_SECRET`, `OIDC_ISSUER_URL`, `OIDC_SCOPES`,
|
||||
`OIDC_CALLBACK_URL` — **not** camelCase. A misnamed or missing name does **not** fail loudly:
|
||||
Kubernetes leaves the literal string `$(OIDC_ISSUER_URL)` in the argument and login dies with
|
||||
`unsupported protocol scheme ""`.
|
||||
|
||||
| Env var | Source | Why |
|
||||
|---|---|---|
|
||||
| `OIDC_CLIENT_ID`, `OIDC_SCOPES`, `OIDC_CLIENT_SECRET` | `headlamp-oidc-credentials.sops.yaml`, `envFrom`'d by `config.oidc.externalSecret` | secret, or environment-invariant |
|
||||
| `OIDC_ISSUER_URL`, `OIDC_CALLBACK_URL` | `helmrelease.yaml` → `spec.values.env`, templated `${BASE_DOMAIN}` | **environment-specific and public** |
|
||||
|
||||
**Exactly one source per variable.** Never define the same name in both places: an explicit `env:`
|
||||
entry silently overrides the same name arriving via `envFrom`, so an overlap hides which value is
|
||||
actually live.
|
||||
|
||||
### Why the URLs are not in the Secret (the 2026-09-07 prod outage)
|
||||
|
||||
Flux's `${BASE_DOMAIN}` postBuild substitution runs over the **rendered manifest text**; it can never
|
||||
reach inside an encrypted Secret. `OIDC_ISSUER_URL` and `OIDC_CALLBACK_URL` used to be keys in
|
||||
`headlamp-oidc-credentials.sops.yaml`, so both were frozen at the apex `home.keithjackson.dev`.
|
||||
Dev **is** the apex, so dev looked fine — but prod (`BASE_DOMAIN = prod.home.keithjackson.dev`) was
|
||||
pointed at **dev's** Keycloak, `192.168.1.53`, which sits on the dev LAN behind pfSense and is
|
||||
unroutable from prod's `192.168.2.0/24`. Every prod login failed with:
|
||||
|
||||
```
|
||||
Get "https://keycloak.home.keithjackson.dev/realms/homelab/.well-known/openid-configuration":
|
||||
dial tcp 192.168.1.53:443: i/o timeout
|
||||
```
|
||||
|
||||
An issuer URL and a callback URL are public, so they now live in cleartext in `helmrelease.yaml`
|
||||
where substitution works. Only the client secret stays encrypted. The same root cause and the same
|
||||
fix apply to Semaphore (`catalog/semaphore.yaml`, `SEMAPHORE_OIDC_PROVIDERS`).
|
||||
|
||||
**[parity] `OIDC_ISSUER_URL` must equal the kube-apiserver's `oidc-issuer-url`**, which is an
|
||||
install-time k3s flag set from `k3s_base_domain` (`infra/ansible/roles/k3s_server/defaults/main.yml`,
|
||||
overridden per inventory group), *not* from `cluster-vars`. Headlamp forwards the user's `id_token`
|
||||
to the apiserver, so a mismatch 401s every request. Both derive from the same per-environment
|
||||
domain — dev `home.keithjackson.dev`, prod `prod.home.keithjackson.dev` — which is what keeps them
|
||||
in step; changing one without the other breaks login.
|
||||
|
||||
## Secrets
|
||||
|
||||
- The confidential client secret lives SOPS-encrypted in
|
||||
@@ -41,11 +84,6 @@ This keeps the apiserver OIDC config untouched (preferred over widening `--api-a
|
||||
placeholder) and mirrored in this namespace's `headlamp-oidc-credentials.sops.yaml`
|
||||
(`OIDC_CLIENT_SECRET`), which the chart `config.oidc.externalSecret` envFrom's. Same cross-namespace
|
||||
mirror pattern as grafana/gitea.
|
||||
- **Key names are load-bearing.** The chart `envFrom`s this Secret verbatim, so its keys become the
|
||||
container env vars referenced by the chart's OIDC args (`-oidc-idp-issuer-url=$(OIDC_ISSUER_URL)`,
|
||||
etc.). They must be exactly `OIDC_CLIENT_ID`, `OIDC_CLIENT_SECRET`, `OIDC_ISSUER_URL`, `OIDC_SCOPES`
|
||||
(and `OIDC_CALLBACK_URL`) — **not** camelCase. A misnamed key leaves `$(OIDC_ISSUER_URL)`
|
||||
unexpanded and OIDC login fails with `unsupported protocol scheme ""`.
|
||||
|
||||
## Break-glass
|
||||
|
||||
@@ -58,6 +96,6 @@ access if Keycloak/OIDC is down — the standard break-glass path.
|
||||
|---|---|---|
|
||||
| `namespace.yaml` | platform | `headlamp` namespace (`gateway-access=shared`; platform, not app-namespace) |
|
||||
| `helmrepository.yaml` / `helmrelease.yaml` | platform | Official `kubernetes-sigs/headlamp` chart + OIDC/RBAC values |
|
||||
| `headlamp-oidc-credentials.sops.yaml` | platform | SOPS OIDC config the chart envFrom's (decrypted by the `platform` Flux Kustomization) |
|
||||
| `headlamp-oidc-credentials.sops.yaml` | platform | SOPS OIDC **secret** the chart envFrom's — client id/scopes/secret only; the per-env URLs live in `helmrelease.yaml` `spec.values.env` |
|
||||
| `networkpolicy.yaml` | platform | default-deny baseline + Cilium ingress(gateway)/egress(apiserver+Keycloak) allows |
|
||||
| `httproute.yaml` | platform-config | Gateway API HTTPRoute for `headlamp.home.keithjackson.dev` (needs Gateway CRDs) |
|
||||
| `httproute.yaml` | platform-config | Gateway API HTTPRoute for `headlamp.${BASE_DOMAIN}` (needs Gateway CRDs) |
|
||||
@@ -5,11 +5,9 @@ metadata:
|
||||
namespace: headlamp
|
||||
type: Opaque
|
||||
stringData:
|
||||
OIDC_CLIENT_ID: ENC[AES256_GCM,data:dXAzoFfar4A=,iv:dHOJFcS6tpvtJes1c++nU6BbHyRlmGuLpncucbkJ4xA=,tag:lFI+KJPid2f/2r/ZjYlFTg==,type:str]
|
||||
OIDC_ISSUER_URL: ENC[AES256_GCM,data:Er1ljhH62WahtEJkNvxk1BA2jz28OOCZmmyjkbVN82e/TFM7O+FB/FPjWUaW3lhd+dK16ro=,iv:Z3aP7+T+ytItYpbxjoYymLNGa7m8KGic4WqIQrrBSGE=,tag:/Rvhp5+r7AXIj2uDgL/dPg==,type:str]
|
||||
OIDC_SCOPES: ENC[AES256_GCM,data:WoGaQKY9BFsi5/kDlRMXatINtmE=,iv:kTN+C176I8o5ftzZiKR10s9gl9VvBsOCJhFIZzj9gm4=,tag:ZyRIykD1h5YBq4grd6FB/w==,type:str]
|
||||
OIDC_CALLBACK_URL: ENC[AES256_GCM,data:SZdpxEuW1BJccLyRGjuIDWBu6KpySARv/6M0mWtzc9jS+v64Lgr4VWKwgW0tdZrH5jM9rw==,iv:UbLwgfz7J0SIWbcQ4csqxv5B3enTmfHJzSDw/lmqAEI=,tag:lge2AuoQXK/u3uZbWvGnLQ==,type:str]
|
||||
OIDC_CLIENT_SECRET: ENC[AES256_GCM,data:r0pb73gat8E7BFLPbdhguLh8G5PUT7PlJJeIcv7QPdMnN4iIB8MedMwxd77DkbxHSR7bav2ohQczjnbJBA4tPA==,iv:O0RbMFz4UD1sy8mbY7SXWCSGNF+lapDTL7tpphEcx7c=,tag:bEyuEs/lsK28fJeYDpYiOg==,type:str]
|
||||
OIDC_CLIENT_ID: ENC[AES256_GCM,data:FCW6yV5oUCM=,iv:+oWwATPxrukg7BbNDraaWhBoLmRsAAlF/HwlyYtLBgI=,tag:aoEMlyxyXLeiLak+i3Suww==,type:str]
|
||||
OIDC_SCOPES: ENC[AES256_GCM,data:k9jHaTSEQ7zl0gmK2zTW7AAbQ8c=,iv:cOGN1Oi/E9tTSZqNKY6i35wWk6fXatlYNRRhtVQrl1E=,tag:Q3I2pJ/a6ESX/ox2VvNDiA==,type:str]
|
||||
OIDC_CLIENT_SECRET: ENC[AES256_GCM,data:qoWJYdYx5bZztHJRYlGgxVRy/n9izkgffoGuQwePWtV6YrQpxZGgS3sak8cP6tt5M+3ZkFSrysxgcqcjrzJFuA==,iv:ZtEfWbPOucVnYv3x107XEjZ8Qt7HXBpwTlSuoxv+x5I=,tag:PXuEyhIoPOxo/Aw6hEhfKw==,type:str]
|
||||
sops:
|
||||
kms: []
|
||||
gcp_kms: []
|
||||
@@ -19,14 +17,14 @@ sops:
|
||||
- recipient: age175l8mdpdfu7hq0aml3exs3gykarwjmuvr23sq56s3wjejnyk44wsp4mfzg
|
||||
enc: |
|
||||
-----BEGIN AGE ENCRYPTED FILE-----
|
||||
YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSB1UDV1RzRWeGZvdWxFQlgz
|
||||
dCtjTU8wZzR5Tks5dmYreFliREZGaDdXMVVjCkVPY2lZby9LNzJMelJkTlE1Yks2
|
||||
cXN5YmhlaUtwN3ZjQUo5R0xnQWNQYm8KLS0tIDBMSUMxZ1pHaDRnUWs5RGtRNlhI
|
||||
N0I4ekhqMWVWUFZoeGU4SERpYXVDQUkKUUwY6ZxEiWGdqV8s3wbnbPF9SkZJoxfy
|
||||
3MkNQ7rZHSILFTPVaZSErNTI21vqQr3lG24+yKLfNhAZBNyB5lvedQ==
|
||||
YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBFdDZ6Zm9hSW9NY1Mrd0FO
|
||||
NXQxdC9NWXlrd2VXUjBYeGVLREJjOU56dmdJCk15NzlCdFRaWDdvUWVTcWtRc3hj
|
||||
eVJCNVdYSFZQU0V4Q0txTzhEMHVJMUEKLS0tIG5kamFsU3RwTWp6MWRlNTlQRlE3
|
||||
MFJFZ2NvUXAvc3J6NUl2b0NHNUVDYTQKb7tibY/OHM4FRfQ2dzTnIRTIgWG8gddU
|
||||
lFJCZG03U79MEG/UeottO4uNJ3jSXImXpysXSHnH3o5muNvIuEN9rw==
|
||||
-----END AGE ENCRYPTED FILE-----
|
||||
lastmodified: "2026-08-29T20:04:33Z"
|
||||
mac: ENC[AES256_GCM,data:Haj8wMqDuIdtBopP02L1Z63+T8f0fcuSDpF5jnjgCB1+uzX+d4ylqpcVP5r8Ug8M/2ay2nYWoJBWzL0Y1iHcnDP7/T60M8hT46cBYPrDh3MqY0rWF5GwpjJxL9tStoSlDTYICeilAPqo2Vw4UM1CqnZv+th40rz5/R4MwRsU04w=,iv:5HPvtnF6nnDYDaT84r1JWf+ZH1X5/L1Aiim2lgOucH4=,tag:VM/2FXNW7sdjCk/k2AVl+g==,type:str]
|
||||
lastmodified: "2026-09-07T07:04:07Z"
|
||||
mac: ENC[AES256_GCM,data:hGJmhdXg0XaaCh6YRI7Wj1TlnjFtckASY4OSyfEgLM8tbwPoElXLir5HQJz7F19uPirbSslVuG8+s58Zvv4/JG/Qki9tQyTItJzbkFVg7iXnXOcYwxW8vw+P26NeE84CYXCIGGunzKZuY7/6ftul8czt/3p83I0X4Y4YzbttaGs=,iv:i2wY7tPaeizv1k7O7b9bMSdbGABFDri5WdDsOxGBkOw=,tag:QI1b2rYgeme26NoGBm3GEA==,type:str]
|
||||
pgp: []
|
||||
encrypted_regex: ^(data|stringData)$
|
||||
version: 3.9.4
|
||||
@@ -2,15 +2,27 @@
|
||||
# TEMPLATE — NOT APPLIED, NOT ENCRYPTED (.yaml.example is ignored by kustomize and never
|
||||
# auto-encrypted by SOPS). Reference scaffold + OPERATOR HAND-OFF.
|
||||
#
|
||||
# WHAT THIS IS: the OIDC config Headlamp uses to authenticate against the Keycloak `homelab` realm's
|
||||
# WHAT THIS IS: the SECRET half of Headlamp's OIDC config for the Keycloak `homelab` realm's
|
||||
# `headlamp` client. The Headlamp chart's `config.oidc.externalSecret` (helmrelease.yaml) envFrom's
|
||||
# THIS Secret, so ALL OIDC env (OIDC_CLIENT_ID/OIDC_CLIENT_SECRET/OIDC_ISSUER_URL/OIDC_SCOPES/OIDC_CALLBACK_URL) live here,
|
||||
# SOPS-encrypted, referenced by name only (R-IDP-04). The chart `envFrom`s this Secret VERBATIM, so
|
||||
# the KEYS ARE the container env var names — they MUST be exactly OIDC_CLIENT_ID / OIDC_CLIENT_SECRET
|
||||
# / OIDC_ISSUER_URL / OIDC_SCOPES / OIDC_CALLBACK_URL (the chart's `-oidc-*` args reference those
|
||||
# names via $(...)). There is NO camelCase→OIDC_ mapping; a mismatched key breaks OIDC login.
|
||||
# THIS Secret, so its KEYS ARE the container env var names — the chart renames nothing, and its
|
||||
# `-oidc-*` args reference those names via $(...). They MUST be spelled exactly as below.
|
||||
#
|
||||
# The `clientSecret` value MUST equal the `headlamp-client-secret` placed in
|
||||
# ── THE URLS ARE NOT HERE, AND MUST NOT BE PUT BACK (2026-09-07) ─────────────────────────────
|
||||
# OIDC_ISSUER_URL and OIDC_CALLBACK_URL are ENVIRONMENT-SPECIFIC and NON-SECRET. They live in
|
||||
# `helmrelease.yaml` under `spec.values.env`, written as
|
||||
# https://keycloak.${BASE_DOMAIN}/realms/homelab
|
||||
# https://headlamp.${BASE_DOMAIN}/oidc-callback
|
||||
# so Flux's postBuild `${BASE_DOMAIN}` substitution resolves them per environment. They used to be
|
||||
# keys in this Secret; substitution CANNOT reach inside ciphertext, so both were frozen at the apex
|
||||
# `home.keithjackson.dev` and PROD pointed Headlamp at DEV's Keycloak (192.168.1.53 — on the dev LAN
|
||||
# behind pfSense, unroutable from prod's 192.168.2.0/24). Every prod login failed with
|
||||
# dial tcp 192.168.1.53:443: i/o timeout on .../.well-known/openid-configuration
|
||||
# Dev only ever looked correct because dev IS the apex. Adding either key back here re-breaks prod.
|
||||
#
|
||||
# ONE SOURCE PER VARIABLE: never define a name in BOTH this Secret and `spec.values.env` — an
|
||||
# explicit `env:` entry silently WINS over the same name from `envFrom`, hiding which one is live.
|
||||
#
|
||||
# The `OIDC_CLIENT_SECRET` value MUST equal the `headlamp-client-secret` placed in
|
||||
# platform/keycloak/keycloak-realm-clients.sops.yaml (which the realm import injects into the
|
||||
# Keycloak `headlamp` client) — same cross-namespace mirror pattern as grafana/gitea (a Secret
|
||||
# cannot be shared across namespaces, so the one value is stored in two encrypted files).
|
||||
@@ -18,7 +30,7 @@
|
||||
# HAND-OFF STEPS (operator):
|
||||
# (a) Use the SAME headlamp-client-secret generated for keycloak-realm-clients (openssl rand -hex 32).
|
||||
# (b) Copy to: platform/headlamp/headlamp-oidc-credentials.sops.yaml
|
||||
# (c) Fill `clientSecret`; encrypt:
|
||||
# (c) Fill `OIDC_CLIENT_SECRET`; encrypt:
|
||||
# sops -e -i platform/headlamp/headlamp-oidc-credentials.sops.yaml
|
||||
# (d) It is already listed under `resources:` in platform/headlamp/kustomization.yaml.
|
||||
# =============================================================================
|
||||
@@ -32,14 +44,12 @@ stringData:
|
||||
# KEY NAMES ARE LOAD-BEARING. The chart does NOT rename these — it `envFrom`s this Secret
|
||||
# verbatim, so each key becomes a container env var of the SAME name, and the chart's OIDC args
|
||||
# reference them by exact name: `-oidc-client-id=$(OIDC_CLIENT_ID)`,
|
||||
# `-oidc-client-secret=$(OIDC_CLIENT_SECRET)`, `-oidc-idp-issuer-url=$(OIDC_ISSUER_URL)`,
|
||||
# `-oidc-scopes=$(OIDC_SCOPES)`. If a key is misnamed (e.g. camelCase `issuerURL`), the env var
|
||||
# `OIDC_ISSUER_URL` is undefined, K8s leaves the literal string `$(OIDC_ISSUER_URL)` in the arg,
|
||||
# and Headlamp's OIDC discovery fails with `unsupported protocol scheme ""`. Use these EXACT keys.
|
||||
# Non-secret OIDC config (kept in the encrypted Secret because the chart envFrom's a single Secret).
|
||||
# `-oidc-client-secret=$(OIDC_CLIENT_SECRET)`, `-oidc-scopes=$(OIDC_SCOPES)`. If a key is misnamed
|
||||
# (e.g. camelCase `clientID`), the env var is undefined, K8s leaves the LITERAL string
|
||||
# `$(OIDC_CLIENT_ID)` in the arg — it does NOT fail loudly — and OIDC login breaks. Use these
|
||||
# EXACT keys. Environment-INVARIANT, non-secret values stay here simply because the chart wants a
|
||||
# single envFrom source; anything that varies per environment belongs in helmrelease.yaml `env:`.
|
||||
OIDC_CLIENT_ID: headlamp
|
||||
OIDC_ISSUER_URL: https://keycloak.home.keithjackson.dev/realms/homelab
|
||||
OIDC_SCOPES: "openid email profile"
|
||||
OIDC_CALLBACK_URL: https://headlamp.home.keithjackson.dev/oidc-callback
|
||||
# The confidential client secret — MUST match keycloak-realm-clients headlamp-client-secret.
|
||||
OIDC_CLIENT_SECRET: REPLACE-ME
|
||||
@@ -58,16 +58,50 @@ spec:
|
||||
config:
|
||||
inCluster: true
|
||||
oidc:
|
||||
# OIDC config (OIDC_CLIENT_ID / OIDC_CLIENT_SECRET / OIDC_ISSUER_URL / OIDC_SCOPES /
|
||||
# OIDC_CALLBACK_URL) is supplied via an EXISTING SOPS-encrypted Secret consumed by name only
|
||||
# (R-IDP-04) — the chart envFrom's it. The Secret keys ARE the env var names (no renaming),
|
||||
# and the chart's `-oidc-*` args reference them via $(...), e.g.
|
||||
# `-oidc-idp-issuer-url=$(OIDC_ISSUER_URL)`; a camelCase key would leave that arg unexpanded
|
||||
# and break OIDC login (`unsupported protocol scheme ""`). Nothing sensitive is rendered here.
|
||||
# OIDC config reaches the container as env vars whose NAMES ARE LOAD-BEARING: the chart's
|
||||
# args reference them via $(...) — `-oidc-client-id=$(OIDC_CLIENT_ID)`,
|
||||
# `-oidc-idp-issuer-url=$(OIDC_ISSUER_URL)`, `-oidc-callback-url=$(OIDC_CALLBACK_URL)`, … — so
|
||||
# they MUST be exactly OIDC_CLIENT_ID / OIDC_CLIENT_SECRET / OIDC_ISSUER_URL / OIDC_SCOPES /
|
||||
# OIDC_CALLBACK_URL. A misnamed or absent name does NOT fail: Kubernetes leaves the LITERAL
|
||||
# string `$(OIDC_ISSUER_URL)` in the arg and login dies with `unsupported protocol scheme ""`.
|
||||
#
|
||||
# There are exactly TWO sources, with NO variable served by both (a name defined in `env:`
|
||||
# would silently WIN over the same name coming from `envFrom`, so overlap is forbidden here):
|
||||
# • envFrom this SOPS Secret → OIDC_CLIENT_ID, OIDC_SCOPES, OIDC_CLIENT_SECRET
|
||||
# • the `env:` block below → OIDC_ISSUER_URL, OIDC_CALLBACK_URL
|
||||
# The Secret is consumed by name only (R-IDP-04); nothing sensitive is rendered here.
|
||||
externalSecret:
|
||||
enabled: true
|
||||
name: headlamp-oidc
|
||||
hasScopes: true
|
||||
# ── PER-ENVIRONMENT OIDC URLs (2026-09-07 fix) ───────────────────────────────────────────────
|
||||
# These two used to be keys INSIDE headlamp-oidc-credentials.sops.yaml. That was the bug: Flux's
|
||||
# `${BASE_DOMAIN}` postBuild substitution operates on the RENDERED manifest text and can never
|
||||
# reach inside an encrypted Secret, so both were frozen at the apex `home.keithjackson.dev`.
|
||||
# Dev is the apex, so dev looked fine; PROD (BASE_DOMAIN = prod.home.keithjackson.dev) therefore
|
||||
# pointed Headlamp at DEV's Keycloak — 192.168.1.53, on the dev LAN behind pfSense, unroutable
|
||||
# from prod's 192.168.2.0/24 — and every login died with
|
||||
# dial tcp 192.168.1.53:443: i/o timeout on .../.well-known/openid-configuration
|
||||
# An issuer URL and a callback URL are PUBLIC. They belong in cleartext, where substitution works.
|
||||
#
|
||||
# [parity] OIDC_ISSUER_URL MUST equal the kube-apiserver's `oidc-issuer-url`, which is an
|
||||
# INSTALL-TIME k3s flag derived from `k3s_base_domain` (infra/ansible roles/k3s_server/defaults +
|
||||
# inventory/group_vars/k3s_<env>/vars.yml), NOT from this ConfigMap. Headlamp forwards the user's
|
||||
# id_token to the apiserver as the bearer, so an issuer mismatch = every request 401s. Both sides
|
||||
# are keyed off the same per-environment domain (BASE_DOMAIN == k3s_base_domain), which is what
|
||||
# keeps them in step — dev home.keithjackson.dev, prod prod.home.keithjackson.dev.
|
||||
#
|
||||
# NOTE: naming OIDC_CALLBACK_URL here also makes the chart EMIT `-oidc-callback-url=$(…)`, which
|
||||
# it previously omitted (the arg is gated on the value being set via `env:`/`config.oidc`, and the
|
||||
# Secret key alone did not trip that gate — so the Secret's callback URL was dead weight). The
|
||||
# value is byte-identical to the single redirectUri registered on the Keycloak `headlamp` client
|
||||
# (platform/keycloak/keycloak-realm-import.yaml, also `${BASE_DOMAIN}`-templated), which is the
|
||||
# only URI Keycloak will accept, so making it explicit cannot change behaviour in either env.
|
||||
env:
|
||||
- name: OIDC_ISSUER_URL
|
||||
value: https://keycloak.${BASE_DOMAIN}/realms/homelab
|
||||
- name: OIDC_CALLBACK_URL
|
||||
value: https://headlamp.${BASE_DOMAIN}/oidc-callback
|
||||
# PER-USER RBAC: do NOT grant Headlamp's ServiceAccount cluster-admin. User requests are
|
||||
# authorized by their forwarded OIDC token against the existing oidc:* group bindings.
|
||||
serviceAccount:
|
||||
|
||||
Reference in new issue
Block a user