|
| 1 | +#----------------------------------------------------------------------------------------- |
| 2 | +# Fetch the data sources |
| 3 | +#----------------------------------------------------------------------------------------- |
| 4 | +data "sysdig_secure_agentless_scanning_assets" "assets" {} |
| 5 | + |
| 6 | +#----------------------------------------------------------------------------------------- |
| 7 | +# These locals indicate the suffix to create unique name for resources and permissions |
| 8 | +#----------------------------------------------------------------------------------------- |
| 9 | +locals { |
| 10 | + suffix = var.suffix == null ? random_id.suffix[0].hex : var.suffix |
| 11 | + host_discovery_permissions = [ |
| 12 | + # networks |
| 13 | + "compute.networks.list", |
| 14 | + "compute.networks.get", |
| 15 | + # instances |
| 16 | + "compute.instances.list", |
| 17 | + "compute.instances.get", |
| 18 | + # disks |
| 19 | + "compute.disks.list", |
| 20 | + "compute.disks.get", |
| 21 | + # workload identity federation |
| 22 | + "iam.serviceAccounts.getAccessToken", |
| 23 | + ] |
| 24 | + host_scan_permissions = [ |
| 25 | + # general stuff |
| 26 | + "compute.zoneOperations.get", |
| 27 | + # disks |
| 28 | + "compute.disks.get", |
| 29 | + "compute.disks.useReadOnly", |
| 30 | + ] |
| 31 | +} |
| 32 | + |
| 33 | +#----------------------------------------------------------------------------------------------------------------------- |
| 34 | +# A random resource is used to generate unique Agentless Scan name suffix for resources. |
| 35 | +# This prevents conflicts when recreating an Agentless Scan resources with the same name. |
| 36 | +#----------------------------------------------------------------------------------------------------------------------- |
| 37 | +resource "random_id" "suffix" { |
| 38 | + count = var.suffix == null ? 1 : 0 |
| 39 | + byte_length = 3 |
| 40 | +} |
| 41 | + |
| 42 | + |
| 43 | +resource "google_service_account" "controller" { |
| 44 | + project = var.project_id |
| 45 | + account_id = "sysdig-ahs-${local.suffix}" |
| 46 | + display_name = "Sysdig Agentless Host Scanning" |
| 47 | +} |
| 48 | + |
| 49 | +#----------------------------------------------------------------------------------------------------------------------- |
| 50 | +# Configure Workload Identity Federation for auth |
| 51 | +# See https://cloud.google.com/iam/docs/access-resources-aws |
| 52 | +#----------------------------------------------------------------------------------------------------------------------- |
| 53 | + |
| 54 | +resource "google_iam_workload_identity_pool" "agentless" { |
| 55 | + workload_identity_pool_id = "sysdig-ahs-${local.suffix}" |
| 56 | +} |
| 57 | + |
| 58 | +resource "google_iam_workload_identity_pool_provider" "agentless" { |
| 59 | + count = data.sysdig_secure_agentless_scanning_assets.assets.backend.cloud_id != null ? 1 : 0 |
| 60 | + |
| 61 | + lifecycle { |
| 62 | + precondition { |
| 63 | + condition = (data.sysdig_secure_agentless_scanning_assets.assets.backend.cloud_id != null && var.sysdig_account_id == null) |
| 64 | + error_message = "Cannot provide both sysdig_backend or sysdig_account_id" |
| 65 | + } |
| 66 | + } |
| 67 | + |
| 68 | + workload_identity_pool_id = google_iam_workload_identity_pool.agentless.workload_identity_pool_id |
| 69 | + workload_identity_pool_provider_id = "sysdig-ahs-${local.suffix}" |
| 70 | + display_name = "Sysdig Agentless Controller" |
| 71 | + description = "AWS identity pool provider for Sysdig Secure Agentless Host Scanning" |
| 72 | + disabled = false |
| 73 | + |
| 74 | + attribute_condition = "attribute.aws_account==\"${data.sysdig_secure_agentless_scanning_assets.assets.backend.cloud_id}\"" |
| 75 | + |
| 76 | + attribute_mapping = { |
| 77 | + "google.subject" = "assertion.arn" |
| 78 | + "attribute.aws_account" = "assertion.account" |
| 79 | + "attribute.role" = "assertion.arn.extract(\"/assumed-role/{role}/\")" |
| 80 | + "attribute.session" = "assertion.arn.extract(\"/assumed-role/{role_and_session}/\").extract(\"/{session}\")" |
| 81 | + } |
| 82 | + |
| 83 | + aws { |
| 84 | + account_id = data.sysdig_secure_agentless_scanning_assets.assets.backend.cloud_id |
| 85 | + } |
| 86 | +} |
| 87 | + |
| 88 | +resource "google_service_account_iam_member" "controller_custom" { |
| 89 | + count = data.sysdig_secure_agentless_scanning_assets.assets.backend.cloud_id != null ? 1 : 0 |
| 90 | + |
| 91 | + lifecycle { |
| 92 | + precondition { |
| 93 | + condition = (data.sysdig_secure_agentless_scanning_assets.assets.backend.cloud_id != null && var.sysdig_account_id == null) |
| 94 | + error_message = "Cannot provide both sysdig_backend or sysdig_account_id" |
| 95 | + } |
| 96 | + } |
| 97 | + |
| 98 | + service_account_id = google_service_account.controller.name |
| 99 | + role = "roles/iam.workloadIdentityUser" |
| 100 | + member = "principalSet://iam.googleapis.com/${google_iam_workload_identity_pool.agentless.name}/attribute.aws_account/${data.sysdig_secure_agentless_scanning_assets.assets.backend.cloud_id}" |
| 101 | +} |
| 102 | + |
| 103 | +resource "google_iam_workload_identity_pool_provider" "agentless_gcp" { |
| 104 | + count = var.sysdig_account_id != null ? 1 : 0 |
| 105 | + |
| 106 | + lifecycle { |
| 107 | + precondition { |
| 108 | + condition = (data.sysdig_secure_agentless_scanning_assets.assets.backend.cloud_id == null && var.sysdig_account_id != null) |
| 109 | + error_message = "Cannot provide both sysdig_backend or sysdig_account_id" |
| 110 | + } |
| 111 | + } |
| 112 | + |
| 113 | + workload_identity_pool_id = google_iam_workload_identity_pool.agentless.workload_identity_pool_id |
| 114 | + workload_identity_pool_provider_id = "sysdig-ahs-${local.suffix}-gcp" |
| 115 | + display_name = "Sysdig Agentless Controller" |
| 116 | + description = "GCP identity pool provider for Sysdig Secure Agentless Host Scanning" |
| 117 | + disabled = false |
| 118 | + |
| 119 | + attribute_condition = "google.subject == \"${var.sysdig_account_id}\"" |
| 120 | + |
| 121 | + attribute_mapping = { |
| 122 | + "google.subject" = "assertion.sub" |
| 123 | + "attribute.sa_id" = "assertion.sub" |
| 124 | + } |
| 125 | + |
| 126 | + oidc { |
| 127 | + issuer_uri = "https://accounts.google.com" |
| 128 | + } |
| 129 | +} |
| 130 | + |
| 131 | +resource "google_service_account_iam_member" "controller_custom_gcp" { |
| 132 | + count = var.sysdig_account_id != null ? 1 : 0 |
| 133 | + |
| 134 | + lifecycle { |
| 135 | + precondition { |
| 136 | + condition = (data.sysdig_secure_agentless_scanning_assets.assets.backend.cloud_id == null && var.sysdig_account_id != null) |
| 137 | + error_message = "Cannot provide both sysdig_backend or sysdig_account_id" |
| 138 | + } |
| 139 | + } |
| 140 | + |
| 141 | + service_account_id = google_service_account.controller.name |
| 142 | + role = "roles/iam.workloadIdentityUser" |
| 143 | + member = "principalSet://iam.googleapis.com/${google_iam_workload_identity_pool.agentless.name}/attribute.sa_id/${var.sysdig_account_id}" |
| 144 | +} |
| 145 | + |
| 146 | +#----------------------------------------------------------------------------------------- |
| 147 | +# Custom IAM roles and bindings |
| 148 | +#----------------------------------------------------------------------------------------- |
| 149 | + |
| 150 | +resource "google_project_iam_custom_role" "controller_role" { |
| 151 | + count = var.is_organizational ? 0 : 1 |
| 152 | + |
| 153 | + project = var.project_id |
| 154 | + role_id = "SysdigCloudVMDiscovery${local.suffix}" |
| 155 | + title = "SysdigCloudVM, for Host Discovery" |
| 156 | + permissions = local.host_discovery_permissions |
| 157 | +} |
| 158 | + |
| 159 | +resource "google_project_iam_binding" "controller_binding" { |
| 160 | + count = var.is_organizational ? 0 : 1 |
| 161 | + |
| 162 | + project = var.project_id |
| 163 | + role = google_project_iam_custom_role.controller_role[0].id |
| 164 | + members = [ |
| 165 | + "serviceAccount:${google_service_account.controller.email}", |
| 166 | + ] |
| 167 | +} |
| 168 | + |
| 169 | +resource "google_project_iam_custom_role" "worker_role" { |
| 170 | + count = var.is_organizational ? 0 : 1 |
| 171 | + |
| 172 | + project = var.project_id |
| 173 | + role_id = "SysdigCloudVMScan${local.suffix}" |
| 174 | + title = "SysdigCloudVM, for Host Scan" |
| 175 | + permissions = local.host_scan_permissions |
| 176 | +} |
| 177 | + |
| 178 | +resource "google_project_iam_binding" "admin_account_iam" { |
| 179 | + count = var.is_organizational ? 0 : 1 |
| 180 | + |
| 181 | + project = var.project_id |
| 182 | + role = google_project_iam_custom_role.worker_role[0].id |
| 183 | + members = [ |
| 184 | + "serviceAccount:${data.sysdig_secure_agentless_scanning_assets.assets.gcp.worker_identity}", |
| 185 | + ] |
| 186 | +} |
| 187 | + |
| 188 | +#----------------------------------------------------------------------------------------------------------------------------------------- |
| 189 | +# Call Sysdig Backend to add the agentless-scan integration to the Sysdig Cloud Account |
| 190 | +# |
| 191 | +# Note (optional): To ensure this gets called after all cloud resources are created, add |
| 192 | +# explicit dependency using depends_on |
| 193 | +#----------------------------------------------------------------------------------------------------------------------------------------- |
| 194 | + |
| 195 | +resource "sysdig_secure_cloud_auth_account_component" "gcp_agentless_scan" { |
| 196 | + account_id = var.sysdig_secure_account_id |
| 197 | + type = "COMPONENT_SERVICE_PRINCIPAL" |
| 198 | + instance = "secure-scanning" |
| 199 | + version = "v0.1.0" |
| 200 | + service_principal_metadata = jsonencode({ |
| 201 | + gcp = { |
| 202 | + workload_identity_federation = { |
| 203 | + pool_provider_id = data.sysdig_secure_agentless_scanning_assets.assets.gcp.worker_identity != null ? google_iam_workload_identity_pool_provider.agentless[0].name : var.sysdig_account_id != null ? google_iam_workload_identity_pool_provider.agentless_gcp[0].name : null |
| 204 | + } |
| 205 | + email = google_service_account.controller.email |
| 206 | + } |
| 207 | + }) |
| 208 | +} |
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