feat: 纳管共享 etcd 与 k3s 外 PostgreSQL 高可用及备份

2026-09-25 19:34:48 +00:00
parent acd4b55722
commit 3a2fe5fa0c
92 changed files with 4211 additions and 0 deletions
@@ -0,0 +1,93 @@
+terraform {
+  required_version = ">= 1.10"
+  required_providers {
+    vault = {
+      source  = "hashicorp/vault"
+      version = "~> 4.0"
+    }
+  }
+}
+
+provider "vault" {
+  address = var.bao_address
+}
+
+variable "bao_address" {
+  type    = string
+  default = "https://bao.ad.ddupan.top:8200"
+}
+variable "pki_mount" {
+  type    = string
+  default = "pki"
+}
+variable "kv_mount" {
+  type    = string
+  default = "kv"
+}
+variable "member_names" {
+  type    = list(string)
+  default = ["etcd-laptop", "etcd-pve1", "etcd-pve2"]
+}
+variable "consumer_names" {
+  type    = set(string)
+  default = ["patroni-pg-prod"]
+}
+
+# 仅管理既有 PKI 下的新 role/policy，不纳管 CA 私钥、mount 或秘密值。
+locals {
+  certificate_roles = {
+    server  = { names = var.member_names, server = true, client = false, ips = true }
+    peer    = { names = concat(var.member_names, ["homelab-etcd-peer"]), server = true, client = true, ips = true }
+    admin   = { names = ["root"], server = false, client = true, ips = false }
+    gateway = { names = var.member_names, server = false, client = true, ips = false }
+    client  = { names = [for name in var.consumer_names : "etcd-${name}"], server = false, client = true, ips = false }
+  }
+}
+resource "vault_pki_secret_backend_role" "etcd" {
+  for_each                    = local.certificate_roles
+  backend                     = var.pki_mount
+  name                        = "homelab-etcd-${each.key}"
+  allowed_domains             = each.value.names
+  allow_bare_domains          = true
+  allow_subdomains            = false
+  allow_glob_domains          = false
+  allow_any_name              = false
+  allow_localhost             = false
+  allow_wildcard_certificates = false
+  allow_ip_sans               = each.value.ips
+  server_flag                 = each.value.server
+  client_flag                 = each.value.client
+  key_type                    = "ec"
+  key_bits                    = 256
+  ttl                         = 5184000
+  max_ttl                     = 5184000
+  require_cn                  = !contains(["gateway", "client"], each.key)
+  use_csr_common_name         = true
+  use_csr_sans                = true
+}
+
+resource "vault_policy" "etcd_provisioner" {
+  name   = "homelab-etcd-provisioner"
+  policy = <<-EOT
+    path "${var.pki_mount}/sign/homelab-etcd-*" {
+      capabilities = ["update"]
+    }
+    path "${var.kv_mount}/metadata/infra/etcd/consumers/*" {
+      capabilities = ["read"]
+    }
+    path "${var.kv_mount}/data/infra/etcd/consumers/*" {
+      capabilities = ["create", "read", "update"]
+    }
+  EOT
+}
+
+# 身份绑定沿用既有控制端认证方式，创建 policy 不自动授权任何身份。
+resource "vault_policy" "etcd_consumer" {
+  for_each = var.consumer_names
+  name     = "homelab-etcd-${each.key}"
+  policy   = <<-EOT
+    path "${var.kv_mount}/data/infra/etcd/consumers/${each.key}" {
+      capabilities = ["read"]
+    }
+  EOT
+}