Flavor-based Instance Reservation¶
Prerequisites¶
The following packages should be installed:
blazar
blazar-nova
python-blazarclient
1. Add hosts into the freepool¶
Add hosts into the Blazar freepool using the host-create command:
# Using the blazar CLI
blazar host-create compute-1
# Using the openstack CLI
openstack reservation host create compute-1
Check hosts in the freepool:
# Using the blazar CLI
blazar host-list
# Using the openstack CLI
openstack reservation host list
Result:
+----+---------------------+-------+-----------+----------+
| id | hypervisor_hostname | vcpus | memory_mb | local_gb |
+----+---------------------+-------+-----------+----------+
| 1 | compute-1 | 2 | 3951 | 38 |
+----+---------------------+-------+-----------+----------+
2. Create a lease¶
Create a lease (instance reservation) using lease-create command:
# Using the blazar CLI
blazar lease-create --reservation resource_type=flavor:instance,flavor_id=3,amount=1 --start-date "2024-08-23 12:00" --end-date "2024-09-08 13:00" lease-1
# Using the openstack CLI
openstack reservation lease create --reservation resource_type=flavor:instance,flavor_id=3,amount=1 --start-date "2024-08-23 14:00" --end-date "2024-09-08 15:00" lease-1
Result:
+--------------+-------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+--------------+-------------------------------------------------------------------------------------------------------------------------------------+
| created_at | 2024-08-23 12:40:53 |
| degraded | False |
| end_date | 2024-09-08T15:00:00.000000 |
| events | { |
| | "id": "29e939d9-a158-4376-86d7-5093c3a379cb", |
| | "lease_id": "d7779e56-2b78-4465-8f19-9cc916d97b11", |
| | "event_type": "end_lease", |
| | "time": "2024-09-08T15:00:00.000000", |
| | "status": "UNDONE", |
| | "created_at": "2024-08-23 12:40:53", |
| | "updated_at": null |
| | } |
| | { |
| | "id": "6c985a6e-416a-496a-9714-ae7b2dea0753", |
| | "lease_id": "d7779e56-2b78-4465-8f19-9cc916d97b11", |
| | "event_type": "before_end_lease", |
| | "time": "2024-09-08T14:00:00.000000", |
| | "status": "UNDONE", |
| | "created_at": "2024-08-23 12:40:53", |
| | "updated_at": null |
| | } |
| | { |
| | "id": "e3308415-78b1-441d-8881-74e9569e0635", |
| | "lease_id": "d7779e56-2b78-4465-8f19-9cc916d97b11", |
| | "event_type": "start_lease", |
| | "time": "2024-08-23T14:00:00.000000", |
| | "status": "UNDONE", |
| | "created_at": "2024-08-23 12:40:53", |
| | "updated_at": null |
| | } |
| id | d7779e56-2b78-4465-8f19-9cc916d97b11 |
| name | lease-1 |
| project_id | 09dd299a860b4933a2ebc271377e77a6 |
| reservations | { |
| | "id": "c1fb5090-e046-42a5-8287-2aa380a8d31a", |
| | "lease_id": "d7779e56-2b78-4465-8f19-9cc916d97b11", |
| | "resource_id": "41448036-4bd0-4b03-bd72-829ad636024b", |
| | "resource_type": "flavor:instance", |
| | "status": "pending", |
| | "missing_resources": false, |
| | "resources_changed": false, |
| | "created_at": "2024-08-23 12:40:53", |
| | "updated_at": "2024-08-23 12:40:53", |
| | "vcpus": 2, |
| | "memory_mb": 4096, |
| | "disk_gb": 40, |
| | "amount": 1, |
| | "affinity": null, |
| | "resource_properties": "{\"id\": \"3\", \"name\": \"m1.medium\", \"ram\": 4096, \"disk\": 40, \"swap\": \"\", \"OS-FLV-EXT- |
| | DATA:ephemeral\": 0, \"OS-FLV-DISABLED:disabled\": false, \"vcpus\": 2, \"os-flavor-access:is_public\": true, \"rxtx_factor\": 1.0, |
| | \"extra_specs\": {\"hw_rng:allowed\": \"True\"}}", |
| | "flavor_id": "c1fb5090-e046-42a5-8287-2aa380a8d31a", |
| | "aggregate_id": 6, |
| | "server_group_id": null |
| | } |
| start_date | 2024-08-23T14:00:00.000000 |
| status | PENDING |
| trust_id | 8023d766983a493c898991430493e81a |
| updated_at | 2024-08-23 12:40:53 |
| user_id | 3ecacbbc4acc467faa664ee26eea115d |
+--------------+-------------------------------------------------------------------------------------------------------------------------------------+
Check leases:
# Using the blazar CLI
blazar lease-list
# Using the openstack CLI
openstack reservation lease list
Result:
+--------------------------------------+---------+----------------------------+----------------------------+
| id | name | start_date | end_date |
+--------------------------------------+---------+----------------------------+----------------------------+
| d7779e56-2b78-4465-8f19-9cc916d97b11 | lease-1 | 2024-08-23T14:00:00.000000 | 2024-09-08T15:00:00.000000 |
+--------------------------------------+---------+----------------------------+----------------------------+
3. Use the leased resources¶
While the reservation you created is active you can see and use the flavor of your reservation.
openstack flavor list
Result:
+--------------------------------------+--------------------------------------------------+-------+------+-----------+-------+-----------+
| ID | Name | RAM | Disk | Ephemeral | VCPUs | Is Public |
+--------------------------------------+--------------------------------------------------+-------+------+-----------+-------+-----------+
| 1 | m1.tiny | 512 | 1 | 0 | 1 | True |
| 2 | m1.small | 2048 | 20 | 0 | 1 | True |
| 3 | m1.medium | 4096 | 40 | 0 | 2 | True |
| 4 | m1.large | 8192 | 80 | 0 | 4 | True |
| 42 | m1.nano | 192 | 1 | 0 | 1 | True |
| 5 | m1.xlarge | 16384 | 160 | 0 | 8 | True |
| 84 | m1.micro | 256 | 1 | 0 | 1 | True |
| c1 | cirros256 | 256 | 1 | 0 | 1 | True |
| c1fb5090-e046-42a5-8287-2aa380a8d31a | reservation:c1fb5090-e046-42a5-8287-2aa380a8d31a | 4096 | 40 | 0 | 2 | False |
+--------------------------------------+--------------------------------------------------+-------+------+-----------+-------+-----------+
Create a server: Please specify the flavor of the reservation.
openstack server create --flavor c1fb5090-e046-42a5-8287-2aa380a8d31a --image <image> --network <network> <server-name>
