Merge "Add new role parameters for cpu/ram/disk allocation ratio" into stable/queens

puppet/services/nova-compute.yaml

@@ -241,6 +241,24 @@ parameters:
     type: boolean
     tags:
       - role_specific
+  NovaCPUAllocationRatio:
+    type: number
+    description: Virtual CPU to physical CPU allocation ratio.
+    default: 0.0
+    tags:
+      - role_specific
+  NovaRAMAllocationRatio:
+    type: number
+    description: Virtual RAM to physical RAM allocation ratio.
+    default: 1.0
+    tags:
+      - role_specific
+  NovaDiskAllocationRatio:
+    type: number
+    description: Virtual disk to physical disk allocation ratio.
+    default: 0.0
+    tags:
+      - role_specific
 
 conditions:
   enable_live_migration_tunnelled:
@@ -301,6 +319,9 @@ resources:
               nova::compute::resume_guests_state_on_host_boot: NovaResumeGuestsStateOnHostBoot
               resume_guests_state_on_host_boot: NovaResumeGuestsStateOnHostBoot
               nova::compute::rbd::ephemeral_storage: NovaEnableRbdBackend
+              nova::cpu_allocation_ratio: NovaCPUAllocationRatio
+              nova::ram_allocation_ratio: NovaRAMAllocationRatio
+              nova::disk_allocation_ratio: NovaDiskAllocationRatio
             - values: {get_param: [RoleParameters]}
           - values:
               NovaVcpuPinSet: {get_param: NovaVcpuPinSet}
@@ -361,6 +382,9 @@ resources:
               NovaLibvirtMemStatsPeriodSeconds: {get_param: NovaLibvirtMemStatsPeriodSeconds}
               NovaResumeGuestsStateOnHostBoot: {get_param: NovaResumeGuestsStateOnHostBoot}
               NovaEnableRbdBackend: {get_param: NovaEnableRbdBackend}
+              NovaCPUAllocationRatio: {get_param: NovaCPUAllocationRatio}
+              NovaRAMAllocationRatio: {get_param: NovaRAMAllocationRatio}
+              NovaDiskAllocationRatio: {get_param: NovaDiskAllocationRatio}
 
 outputs:
   role_data:

releasenotes/notes/allocation_ratio-4a8ecf4cdf5fb7e2.yaml

@@ -0,0 +1,13 @@
+---
+features:
+  - |
+    Add new role parameters `NovaCPUAllocationRatio`, `NovaRAMAllocationRatio`
+    and `NovaDiskAllocationRatio` which allows to configure `cpu_allocation_ratio`,
+    `ram_allocation_ratio` and `disk_allocation_ratio`.
+    Default value for NovaCPUAllocationRatio is 0.0
+    Default value for NovaRAMAllocationRatio is 1.0
+    Default value for NovaDiskAllocationRatio is 0.0
+
+    The default values for CPU and Disk allocation ratio
+    are taken 0.0 as mentioned in [1].
+    [1] https://specs.openstack.org/openstack/nova-specs/specs/stein/implemented/initial-allocation-ratios.html