Koschei: Add rolling update playbook

playbooks/manual/upgrade/koschei-rolling.yml

@@ -0,0 +1,23 @@
+# This playbook can be used to update running Koschei instance to
+# latest upstream version without causing user-visible outage, as long
+# as updated version has identical database schema.
+
+- name: Perform Koschei rolling update
+  hosts: os_control[0]:os_control_stg[0]
+  user: root
+  vars_files:
+   - /srv/web/infra/ansible/vars/global.yml
+   - /srv/private/ansible/vars.yml
+   - /srv/web/infra/ansible/vars/{{ ansible_distribution }}.yml
+   - /srv/web/infra/ansible/roles/openshift-apps/koschei/vars/main.yml
+   - /srv/web/infra/ansible/roles/openshift-apps/koschei/vars/{{ env }}.yml
+  handlers:
+  - import_tasks: "{{ handlers_path }}/restart_services.yml"
+
+  # Simply import latest upstream Koschei image from Quay.io, which
+  # should automatically trigger new OpenShift deployments as needed.
+  tasks:
+  - name: Import upstream image into OpenShift
+    include_role: name=openshift/import-image
+    vars:
+      imagestreamname: koschei