Initial support for composable upgrades with Heat+Ansible

This shows how we could wire in the upgrade steps using Ansible
as was previously proposed e.g in https://review.openstack.org/#/c/321416/
but it's more closely integrated with the new composable services
architecture.

It's also very similar to the approach taken by SpinalStack where
ansible snippets per-service were combined then run in a series of
steps using Ansible tags.

This patch just enables upgrade of keystone - we'll add support for
other patches in subsequent patches.

Partially-Implements: blueprint overcloud-upgrades-per-service
Change-Id: I39f5426cb9da0b40bec4a7a3a4a353f69319bdf9

1 files changed, 48 insertions, 0 deletions

diff --git a/puppet/upgrade_config.yaml b/puppet/upgrade_config.yaml
new file mode 100644
index 00000000..c67e10b3
--- /dev/null
+++ b/puppet/upgrade_config.yaml
@@ -0,0 +1,48 @@
+heat_template_version: 2016-10-14
+description: 'Upgrade for via ansible by applying a step related tag'
+
+parameters:
+  UpgradeStepConfig:
+     type: json
+     description: Config (ansible yaml) that will be used to step through the deployment.
+     default: ''
+
+  step:
+    type: string
+    description: Step number of the upgrade
+
+resources:
+
+  AnsibleConfig:
+    type: OS::Heat::Value
+    properties:
+      value:
+        str_replace:
+          template: CONFIG
+          params:
+            CONFIG:
+              - hosts: localhost
+                connection: local
+                tasks: {get_param: UpgradeStepConfig}
+
+  AnsibleUpgradeConfigImpl:
+    type: OS::Heat::SoftwareConfig
+    properties:
+      group: ansible
+      options:
+        tags:
+          str_replace:
+            template: "stepSTEP"
+            params:
+              STEP: {get_param: step}
+      inputs:
+      - name: role
+      config: {get_attr: [AnsibleConfig, value]}
+
+outputs:
+  OS::stack_id:
+    description: The software config which runs ansible with tags
+    value: {get_resource: AnsibleUpgradeConfigImpl}
+  upgrade_config:
+    description:  The configuration file used for upgrade
+    value: {get_attr: [AnsibleConfig, value]}