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kms: dedicated vlmcs.viktorbarzin.me endpoint + Anubis /scripts carve-out

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Internal split-horizon resolves kms.viktorbarzin.me to Traefik (10.0.20.203),
which has no :1688 listener — so LAN clients pointed at kms.viktorbarzin.me:1688
failed with 0xC004F074 "no KMS could be contacted". Add a dedicated A-only
vlmcs.viktorbarzin.me (cloudflare_record.vlmcs -> 176.12.22.76 for the public
WAN NAT; Technitium -> 10.0.20.202 internal, set via API) so it resolves to
vlmcsd both ways. Also carve /scripts/* out of Anubis (module.ingress_scripts
-> bare kms-web-page service) so `iwr | iex` downloads the real script instead
of the PoW challenge HTML.

Verified end-to-end on Win VM 300: reproduced 0xC004F074 on the old host, then
slmgr + ospp + both PowerShell one-liners all -> Licensed via vlmcs (10.0.20.202).

Docs: kms-public-exposure runbook + service-catalog entry.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
Viktor Barzin 2026-06-01 08:24:08 +00:00
parent de04ed099e
commit e63a812062
3 changed files with 72 additions and 8 deletions
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41
stacks/kms/main.tf
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@ -9,7 +9,7 @@ resource "kubernetes_namespace" "kms" {
name = "kms"
labels = {
"istio-injection" : "disabled"
tier = local.tiers.aux
tier = local.tiers.aux
"keel.sh/enrolled" = "true"
}
}
@ -133,6 +133,45 @@ module "ingress" {
}
}
# Carve-out for /scripts/* — the PowerShell activators (kms-bootstrap.ps1,
# setup-kms.ps1) that visitors fetch with `iwr ... | iex`. Anubis cannot gate
# this path: PowerShell/curl are non-JS clients and can't solve the PoW
# challenge, so they'd receive the challenge HTML and `iex` would choke on it.
# Points at the bare kms-web-page nginx service, bypassing the Anubis proxy.
# Traefik prioritises the longer /scripts prefix over the main "/" router.
module "ingress_scripts" {
source = "../../modules/kubernetes/ingress_factory"
# auth = "none": public read-only static scripts (iwr|iex). No login, no PoW.
auth = "none"
namespace = kubernetes_namespace.kms.metadata[0].name
name = "kms-scripts"
service_name = kubernetes_service.kms-web-page.metadata[0].name
port = "80"
ingress_path = ["/scripts"]
full_host = "kms.viktorbarzin.me" # MUST match the main ingress host; without this the factory derives kms-scripts.viktorbarzin.me and the carve-out never matches.
dns_type = "none" # DNS already owned by the main kms ingress.
tls_secret_name = var.tls_secret_name
anti_ai_scraping = false # Two static scripts; nothing for scrapers to mine.
}
# Dedicated KMS endpoint hostname. kms.viktorbarzin.me is the *website* (Traefik
# 10.0.20.203 internally / :443 externally) and cannot also serve raw KMS on
# :1688, so clients pointed at kms.viktorbarzin.me:1688 from the LAN hit Traefik
# (no 1688 listener) and fail with "KMS server cannot be reached". vlmcs.* is
# A-only (NO AAAA — the IPv6 tunnel doesn't forward 1688) and resolves to the
# vlmcsd MetalLB IP both ways:
# external: vlmcs.viktorbarzin.me -> 176.12.22.76 -> pfSense WAN NAT :1688 -> 10.0.20.202
# internal: vlmcs.viktorbarzin.me -> 10.0.20.202 (Technitium split-horizon, set via API)
resource "cloudflare_record" "vlmcs" {
name = "vlmcs"
content = "176.12.22.76" # public_ip (mirrors config.tfvars / ingress_factory default)
proxied = false # raw TCP 1688 — Cloudflare proxy is HTTP-only
ttl = 1
type = "A"
zone_id = "fd2c5dd4efe8fe38958944e74d0ced6d" # cloudflare_zone_id
allow_overwrite = true
}
resource "kubernetes_config_map" "kms_slack_notifier" {
metadata {
name = "kms-slack-notifier"