Instance Reservation¶
Prerequisites¶
The following packages should be installed:
- blazar
- blazar-nova
- python-blazarclient
The following four scheduler filters should be configured in nova.conf:
- AggregateInstanceExtraSpecsFilter
- AggregateMultiTenancyIsolation
- ServerGroupAffinityFilter
- BlazarFilter
1. Add hosts into the freepool¶
- Add hosts into the Blazar freepool using the host-create command:
blazar host-create compute-1
- Check hosts in the freepool:
blazar 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:
blazar lease-create --reservation resource_type=virtual:instance,vcpus=1,memory_mb=1024,disk_gb=20,amount=1,affinity=False --start-date "2020-07-24 20:00" --end-date "2020-08-09 21:00" lease-1
Result:
+---------------+--------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+---------------+--------------------------------------------------------------------------------------------------------------------------+
| action | |
| created_at | 2017-07-31 07:55:59 |
| end_date | 2020-08-09T21:00:00.000000 |
| events | {"status": "UNDONE", "lease_id": "becf2f3b-0177-4c0f-a7e7-0123370849a3", "event_type": "end_lease", "created_at": |
| | "2017-07-31 07:55:59", "updated_at": null, "time": "2020-08-09T21:00:00.000000", "id": "0f269526-c32d-4e53-bc6b- |
| | 09fb7adf4354"} |
| | {"status": "UNDONE", "lease_id": "becf2f3b-0177-4c0f-a7e7-0123370849a3", "event_type": "start_lease", "created_at": |
| | "2017-07-31 07:55:59", "updated_at": null, "time": "2020-07-24T20:00:00.000000", "id": "7dbf3904-7d23-4db3-bfbd- |
| | 5cc8cb9d4d92"} |
| | {"status": "UNDONE", "lease_id": "becf2f3b-0177-4c0f-a7e7-0123370849a3", "event_type": "before_end_lease", "created_at": |
| | "2017-07-31 07:55:59", "updated_at": null, "time": "2020-08-07T21:00:00.000000", "id": "f16151d4-04b4-403c- |
| | b0d7-f60d3810e37e"} |
| id | becf2f3b-0177-4c0f-a7e7-0123370849a3 |
| name | lease-1 |
| project_id | 6f6f9b596d47441294eb40f565063833 |
| reservations | {"status": "pending", "memory_mb": 1024, "lease_id": "becf2f3b-0177-4c0f-a7e7-0123370849a3", "disk_gb": 20, |
| | "resource_id": "061198b0-53e4-4545-9d85-405ca93a7bdf", "created_at": "2017-07-31 07:55:59", "updated_at": "2017-07-31 |
| | 07:55:59", "aggregate_id": 3, "server_group_id": "ba03ebb4-e55c-4da4-9d39-87e13354f3b7", "amount": 1, "affinity": false, |
| | "flavor_id": "db83d6fd-c69c-4259-92cf-012db2e55a58", "id": "db83d6fd-c69c-4259-92cf-012db2e55a58", "vcpus": 1, |
| | "resource_type": "virtual:instance"} |
| start_date | 2020-07-24T20:00:00.000000 |
| status | |
| status_reason | |
| trust_id | 65da707498914c7992ee7170647a3472 |
| updated_at | |
| user_id | |
+---------------+--------------------------------------------------------------------------------------------------------------------------+
- Check leases:
blazar lease-list
Result:
+--------------------------------------+---------+----------------------------+----------------------------+
| id | name | start_date | end_date |
+--------------------------------------+---------+----------------------------+----------------------------+
| becf2f3b-0177-4c0f-a7e7-0123370849a3 | lease-1 | 2020-07-24T20:00:00.000000 | 2020-08-09T21:00:00.000000 |
+--------------------------------------+---------+----------------------------+----------------------------+
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 | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public |
+--------------------------------------+--------------------------------------------------+-----------+------+-----------+------+-------+-------------+-----------+
| 1 | m1.tiny | 512 | 1 | 0 | | 1 | 1.0 | True |
| 2 | m1.small | 2048 | 20 | 0 | | 1 | 1.0 | True |
| 3 | m1.medium | 4096 | 40 | 0 | | 2 | 1.0 | True |
| 4 | m1.large | 8192 | 80 | 0 | | 4 | 1.0 | True |
| 5 | m1.xlarge | 16384 | 160 | 0 | | 8 | 1.0 | True |
| c1 | cirros256 | 256 | 0 | 0 | | 1 | 1.0 | True |
| d1 | ds512M | 512 | 5 | 0 | | 1 | 1.0 | True |
| d2 | ds1G | 1024 | 10 | 0 | | 1 | 1.0 | True |
| d3 | ds2G | 2048 | 10 | 0 | | 2 | 1.0 | True |
| d4 | ds4G | 4096 | 20 | 0 | | 4 | 1.0 | True |
| db83d6fd-c69c-4259-92cf-012db2e55a58 | reservation:db83d6fd-c69c-4259-92cf-012db2e55a58 | 1024 | 20 | 0 | | 1 | 1.0 | False |
+--------------------------------------+--------------------------------------------------+-----------+------+-----------+------+-------+-------------+-----------+
- Create a server: Please specify the flavor of the reservation and group_id as a scheduler hint.
openstack server create --flavor db83d6fd-c69c-4259-92cf-012db2e55a58 --image <image> --network <network> --hint group=ba03ebb4-e55c-4da4-9d39-87e13354f3b7 <server-name>
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