VNFRQTS - Openstack lifecycle operations

Moving the VNF Operation resilient information from Ch 7 to Ch 4.

Issue-ID: VNFRQTS-459

Change-Id: Icd9b1626d412f35b6b448250a709ec196ccf0bb7
Signed-off-by: Bozawglanian, Hagop (hb755d) <hagop.bozawglanian@att.com>

1 files changed, 95 insertions, 0 deletions

diff --git a/docs/Chapter4/Resiliency.rst b/docs/Chapter4/Resiliency.rst
index 09e42a4..ea93f33 100644
--- a/docs/Chapter4/Resiliency.rst
+++ b/docs/Chapter4/Resiliency.rst
@@ -624,3 +624,98 @@ Monitoring & Dashboard Requirements
     rating for the VNF to be incorporated into the software design and
     development of the VNF.
 
+Virtual Function - Container Recovery Requirements
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+As part of life cycle management, for Cloud environment, VNFs need to
+support a set of basic recovery capabilities to maintain the health
+and extend the life of the VNF, eliminating and reducing the frequency
+that an entire VNF needs to be rebuilt or re-instantiated to recover one
+or more of its containers. For instance, a VNF in an Openstack environment
+is composed of one or more containers called VMs (Virtual Machines). During
+the life of a VNF it is expected that Cloud infrastructure hardware will
+fail or they would need to be taken down for maintenance or hardware and
+software upgrades (e.g. firmware upgrades, HostOS (Hypervisor), power
+maintenance, power outages, etc.) To deal with such life cycle events
+without having to rebuild entire VNFs or even entire sites these basic
+recovery capabilities of individual containers, Virtual Machines or other,
+must be supported.
+
+**Evacuate(VM)**: The Controller client is requesting moving a specified
+VM from its current AIC host to another (when the host is down). Moving
+from a specified Host will be supported at in a later release (Openstack).
+
+**Migrate (VM)**: The Controller client is requesting migrating a running
+target VM from its current AIC host to another. Migrating a running target
+VM from a specified Host will be supported at in a later release (Openstack).
+
+**Reboot(VM)**: The Controller client is requesting to reboot the VM.
+Options are soft (graceful) or hard (Openstack).
+
+**Rebuild (VM)**: The Controller client is recreating a target VM instance
+to a known (good) state (Openstack).
+
+**Restart (VM)**: The Controller client is requesting to restart the VM
+(Openstack).
+
+**Snapshot (VM)**: The Controller client is requesting to create a snapshot
+of a VNF or VM and store it (Openstack).
+
+**Start (VM)**: The Controller client is requesting to start the VM
+(Openstack).
+
+**Stop (VM)**: The Controller client is requesting to stop the VM
+(Openstack).
+
+.. req::
+    :id: R-11790
+    :target: VNF
+    :keyword: MUST
+
+    The VNF **MUST** support ONAP Controller's
+    **Restart (stop/start or reboot)** command.
+
+.. req::
+    :id: R-56218
+    :target: VNF
+    :keyword: MUST
+
+    The VNF **MUST** support ONAP Controller's Migrate command that
+    moves container (VM) from a live Physical Server / Compute Node to
+    another live Physical Server / Compute Node.
+
+        Note: Container migrations MUST be transparent to the VNF and no more intrusive than a stop,
+        followed by some down time for the migration to be performed from one Compute Node / Physical
+        Server to another, followed by a start of the same VM with same configuration on the new
+        Compute Node / Physical Server.
+
+.. req::
+    :id: R-38001
+    :target: VNF
+    :keyword: MUST
+
+    The VNF **MUST** support ONAP Controller's **Rebuild** command.
+
+.. req::
+    :id: R-76901
+    :target: VNF
+    :keyword: MUST
+
+    The VNF **MUST** support a container rebuild mechanism based on existing
+    image (e.g. Glance image in Openstack environment) or a snapshot.
+
+.. req::
+    :id: R-46851
+    :target: VNF
+    :keyword: MUST
+    :introduced: casablanca
+
+    The VNF **MUST** support ONAP Controller’s Evacuate command.
+
+.. req::
+    :id: R-48761
+    :target: VNF
+    :keyword: MUST
+    :introduced: casablanca
+
+    The VNF **MUST** support ONAP Controller’s Snapshot command.
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