Files
wangjia 3d5bac66b4 feat(provision): 弹性节点基建 Terraform + 一键更换 (tsk_6u0FxmbC7Yeq)
IaC 面 (infra/) 与控制面 (server/internal/provision) 双产出,落地 doc/04 §4
「节点是牲口」弹性拓扑与 make-before-break 一键更换。

server/internal/provision:
- CloudAdapter 适配层 + Registry(首发 vultr 消耗品池 / hetzner 精品池各一);
  厂商凭证仅从 PROVISION_<VENDOR>_* env 注入,不入库不入 git。
- ProvisionService:CreateNode(幂等键重放不重复开机)、DestroyNode(幂等)、
  RotateIP(换 IP 不换机 + version bump)、ListProviders。
- Replace 一键更换:先建后拆,新机 up 先于旧机 draining(容量不下降),
  replacement_uuid 幂等键 + replacements 表分步记录,崩溃可续跑不重复。
- RotatePool:池内滚动轮换,并发度 1–2。
- cmd/nodectl CLI:create/destroy/rotate-ip/replace/rotate-pool/providers。
- 单测(mock 厂商 API + 内存 Store):幂等重放、make-before-break 时序断言、
  开机失败/探活超时→destroyed+失败计数+告警钩子、崩溃续跑、RotatePool。

infra/:
- terraform/:探针机 + 控制面基线模块化(probe / control-plane)+ README,
  低频基线进 state,节点不进 Terraform。
- cloud-init/node.yaml.tmpl:节点引导模板(注入一次性 bootstrap token,task #5)。
- identity-isolation.md:身份隔离登记表(doc/06 §2 红线,无任何凭证)。

migrations/000008:nodes 增 provider_instance_id/elastic_ip_id、node_events
增 ip_rotated、provision_idempotency / replacements 表(附加式,不动现网)。

红线:仅面向新厂商池,绝不纳管现网生产 EC2(deploy/ marzban)。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-13 14:23:39 +08:00
..

infra/terraform — baseline infrastructure as code

Terraform here manages only low-frequency baseline resources:

  • probe machines — overseas reference dial-test points (doc/04 §1, §4.2).
  • control-plane environment — the API + MySQL + Redis host (doc/04 §5.2), off by default because it changes rarely.

What is deliberately NOT here

Data-plane nodes are not in Terraform. They are disposable cattle, created and destroyed minute-by-minute through vendor APIs by the provision service (server/internal/provision, doc/04 §4). Putting them in Terraform state would fight the "nodes are cattle, not pets" model and serialise every open/退机 behind a state lock. Division of labour:

concern owner frequency in TF state
probe machines Terraform (this dir) low
control-plane env Terraform (this dir) one-off
data-plane nodes (entry/relay/exit) provision service + vendor API minutes

Identity isolation (RED LINE, doc/06 §2)

Every vendor/account/domain used here MUST be an independent identity — its own account, email, and crypto payment, with zero cross-linkage to other assets. This Terraform code and the data-plane vendor accounts use separate credentials:

  • var.hcloud_token here is the management/probe account token — not a data-plane vendor token.
  • Data-plane vendor credentials live only in PROVISION_<VENDOR>_* env secrets consumed by the provision service, never in Terraform, never in the DB.

The full isolation register (which account/email/payment maps to which asset) is maintained in ../identity-isolation.md.

Usage

cd infra/terraform
cp terraform.tfvars.example terraform.tfvars   # gitignored; fill in
export TF_VAR_hcloud_token=...                 # inject secret, never commit

terraform init
terraform fmt -check
terraform validate
terraform plan
terraform apply

CI/management operations run on a dedicated channel (doc/06 §2), not from an operator's everyday machine.

Layout

terraform/
  versions.tf            provider + backend pins
  variables.tf           root inputs
  main.tf                wires probe[] + control-plane modules
  outputs.tf             probe IPs, control-plane IP
  terraform.tfvars.example
  modules/
    probe/               one overseas reference probe point
    control-plane/       API+MySQL+Redis host (prevent_destroy)