1 files changed, 43 insertions, 3 deletions

diff --git a/puppet/role.role.j2.yaml b/puppet/role.role.j2.yaml
index 9726d978..1f432773 100644
--- a/puppet/role.role.j2.yaml
+++ b/puppet/role.role.j2.yaml
@@ -83,11 +83,20 @@ parameters:
     description: >
       The DNS domain used for the hosts. This should match the dhcp_domain
       configured in the Undercloud neutron. Defaults to localdomain.
+  {{role}}ServerMetadata:
+    default: {}
+    description: >
+      Extra properties or metadata passed to Nova for the created nodes in
+      the overcloud. It's accessible via the Nova metadata API. This option is
+      role-specific and is merged with the values given to the ServerMetadata
+      parameter.
+    type: json
   ServerMetadata:
     default: {}
     description: >
       Extra properties or metadata passed to Nova for the created nodes in
-      the overcloud. It's accessible via the Nova metadata API.
+      the overcloud. It's accessible via the Nova metadata API. This applies to
+      all roles and is merged with a role-specific metadata parameter.
     type: json
   {{role}}SchedulerHints:
     type: json
@@ -115,6 +124,13 @@ parameters:
   LoggingGroups:
     type: comma_delimited_list
     default: []
+  UpgradeInitCommand:
+    type: string
+    description: |
+      Command or script snippet to run on all overcloud nodes to
+      initialize the upgrade process. E.g. a repository switch.
+    default: ''
+
 
 resources:
   {{role}}:
@@ -136,7 +152,10 @@ resources:
             template: {get_param: Hostname}
             params: {get_param: HostnameMap}
       software_config_transport: {get_param: SoftwareConfigTransport}
-      metadata: {get_param: ServerMetadata}
+      metadata:
+        map_merge:
+          - {get_param: ServerMetadata}
+          - {get_param: {{role}}ServerMetadata}
       scheduler_hints: {get_param: {{role}}SchedulerHints}
 
   # Combine the NodeAdminUserData and NodeUserData mime archives
@@ -333,9 +352,30 @@ resources:
       server: {get_resource: {{role}}}
       actions: {get_param: NetworkDeploymentActions}
 
+  {{role}}UpgradeInitConfig:
+    type: OS::Heat::SoftwareConfig
+    properties:
+      group: script
+      config:
+        list_join:
+        - ''
+        - - "#!/bin/bash\n\n"
+          - "if [[ -f /etc/resolv.conf.save ]] ; then rm /etc/resolv.conf.save; fi\n\n"
+          - get_param: UpgradeInitCommand
+
+  # Note we may be able to make this conditional on UpgradeInitCommandNotEmpty
+  # but https://bugs.launchpad.net/heat/+bug/1649900 needs fixing first
+  {{role}}UpgradeInitDeployment:
+    type: OS::Heat::SoftwareDeployment
+    depends_on: NetworkDeployment
+    properties:
+      name: {{role}}UpgradeInitDeployment
+      server: {get_resource: {{role}}}
+      config: {get_resource: {{role}}UpgradeInitConfig}
+
   {{role}}Deployment:
     type: OS::Heat::StructuredDeployment
-    depends_on: NetworkDeployment
+    depends_on: {{role}}UpgradeInitDeployment
     properties:
       name: {{role}}Deployment
       config: {get_resource: {{role}}Config}