Add metadata settings for needed kerberos principals

These are only used for TLS-everywhere, and fills up the kerberos
principals that will need to be created for the certs used by the
overcloud. With this, the metadata hook will format these principals
correctly and will further pass them on to the nova metadata service.
Where they can be used if there's a plugin enabled.

bp tls-via-certmonger
bp novajoin

Change-Id: I873094bb69200052febda629fda698a7a782c031

1 files changed, 84 insertions, 0 deletions

diff --git a/extraconfig/nova_metadata/krb-service-principals.yaml b/extraconfig/nova_metadata/krb-service-principals.yaml
new file mode 100644
index 00000000..c66e6460
--- /dev/null
+++ b/extraconfig/nova_metadata/krb-service-principals.yaml
@@ -0,0 +1,84 @@
+heat_template_version: ocata
+description: 'Generates the relevant service principals for a server'
+
+parameters:
+  RoleData:
+     type: json
+     description: the list containing the 'role_data' output for the ServiceChain
+
+  # Coming from parameter_defaults
+  CloudName:
+    default: overcloud.localdomain
+    description: The DNS name of this cloud. E.g. ci-overcloud.tripleo.org
+    type: string
+  CloudNameInternal:
+    default: overcloud.internalapi.localdomain
+    description: >
+      The DNS name of this cloud's internal API endpoint. E.g.
+      'ci-overcloud.internalapi.tripleo.org'.
+    type: string
+  CloudNameStorage:
+    default: overcloud.storage.localdomain
+    description: >
+      The DNS name of this cloud's storage endpoint. E.g.
+      'ci-overcloud.storage.tripleo.org'.
+    type: string
+  CloudNameStorageManagement:
+    default: overcloud.storagemgmt.localdomain
+    description: >
+      The DNS name of this cloud's storage management endpoint. E.g.
+      'ci-overcloud.storagemgmt.tripleo.org'.
+    type: string
+  CloudNameCtlplane:
+    default: overcloud.ctlplane.localdomain
+    description: >
+      The DNS name of this cloud's storage management endpoint. E.g.
+      'ci-overcloud.management.tripleo.org'.
+    type: string
+
+resources:
+
+  IncomingMetadataSettings:
+    type: OS::Heat::Value
+    properties:
+      value:
+        yaql:
+          # Filter null values and values that contain don't contain
+          # 'metadata_settings', get the values from that key and get the
+          # unique ones.
+          expression: list($.data.where($ != null).where($.containsKey('metadata_settings')).metadata_settings.flatten().distinct())
+          data: {get_param: RoleData}
+
+  # Generates entries for nova metadata with the following format:
+  #   'managed_service_<id>' : <service>/<fqdn>
+  # Depending on the requested network
+  IndividualServices:
+    type: OS::Heat::Value
+    properties:
+      value:
+        yaql:
+          expression: let(fqdns => $.data.fqdns) -> dict($.data.metadata.where($ != null and $.type = 'vip').select([concat('managed_service_', $.service, $.network), concat($.service, '/', $fqdns.get($.network))]))
+          data:
+            metadata: {get_attr: [IncomingMetadataSettings, value]}
+            fqdns:
+              external: {get_param: CloudName}
+              internal_api: {get_param: CloudNameInternal}
+              storage: {get_param: CloudNameStorage}
+              storage_mgmt: {get_param: CloudNameStorageManagement}
+              ctlplane: {get_param: CloudNameCtlplane}
+
+  CompactServices:
+    type: OS::Heat::Value
+    properties:
+      value:
+        yaql:
+          expression: dict($.data.where($ != null and $.type = 'node').select([$.service, $.network.replace('_', '')]).groupBy($[0], $[1]))
+          data: {get_attr: [IncomingMetadataSettings, value]}
+
+outputs:
+  metadata:
+    description: actual metadata entries that will be passed to the server.
+    value:
+      map_merge:
+        - {get_attr: [IndividualServices, value]}
+        - compact_services: {get_attr: [CompactServices, value]}