Portal:Cloud VPS/Admin/Resizing instances
Resizing an OpenStack instance is a variation on the process of migrating an instance from one cloudvirt to another. In addition to the normal things that happen during a migration, the resize also changes the flavor of the newly migrated instance.
Resize process
1. List all available flavors and decide which one you will want to resize the instance to:
user@cloudcontrol1003:~$ sudo wmcs-openstack flavor list
+--------------------------------------+---------------------------+-------+------+-----------+-------+-----------+
| ID | Name | RAM | Disk | Ephemeral | VCPUs | Is Public |
+--------------------------------------+---------------------------+-------+------+-----------+-------+-----------+
| 06c3e0a1-f684-4a0c-8f00-551b59a518c8 | g2.cores4.ram8.disk80 | 8192 | 80 | 0 | 4 | True |
| 135fdbe2-86d7-4472-a0fe-01ae72ddbfb2 | g2.cores8.ram16.disk160 | 16384 | 160 | 0 | 8 | True |
| 2a6fca3c-9acd-42c0-8284-929e5345b607 | g2.cores2.ram4.disk40 | 4096 | 40 | 0 | 2 | True |
| 4 | m1.large | 8192 | 80 | 0 | 4 | True |
| c39bc0a6-71a2-4512-926e-43cccf5f8b4c | mediumdb | 65536 | 1638 | 0 | 16 | False |
| e7261773-a931-4a72-b725-3ccf71580b18 | largedb | 65536 | 3481 | 0 | 16 | False |
| ea5a9202-c567-4e58-8cae-86ad3defa730 | g2.cores8.ram36.disk80 | 36864 | 80 | 0 | 8 | True |
| f5b0c7bc-b09a-41af-8812-b50ed99dbec8 | g2.cores1.ram2.disk20 | 2048 | 20 | 0 | 1 | True |
| f8435c5e-1fbc-4edf-89ac-00bd4015f3d0 | g2.cores16.ram16.disk80 | 16384 | 80 | 0 | 16 | True |
| f8f25f58-2021-49bb-95d7-9d0d49a08b9c | g2.cores16.ram64.disk1638 | 65536 | 1638 | 0 | 16 | False |
+--------------------------------------+---------------------------+-------+------+-----------+-------+-----------+
2. Verify the current status of the instance:
user@cloudcontrol1003:~$ OS_PROJECT_ID=PROJECT-ID sudo wmcs-openstack server show SERVER-ID
+-------------------------------------+-----------------------------------------------------------------------------------+
| Field | Value |
+-------------------------------------+-----------------------------------------------------------------------------------+
| OS-DCF:diskConfig | AUTO |
| OS-EXT-AZ:availability_zone | nova |
| OS-EXT-SRV-ATTR:host | cloudvirt1036 |
| OS-EXT-SRV-ATTR:hypervisor_hostname | cloudvirt1036.eqiad.wmnet |
| OS-EXT-SRV-ATTR:instance_name | i-00011964 |
| OS-EXT-STS:power_state | Running |
| OS-EXT-STS:task_state | None |
| OS-EXT-STS:vm_state | active |
| OS-SRV-USG:launched_at | 2020-10-02T16:42:18.000000 |
| OS-SRV-USG:terminated_at | None |
| accessIPv4 | |
| accessIPv6 | |
| addresses | lan-flat-cloudinstances2b=172.16.0.149 |
| config_drive | |
| created | 2020-01-21T22:40:39Z |
| flavor | g2.cores1.ram2.disk20 (f5b0c7bc-b09a-41af-8812-b50ed99dbec8) |
| hostId | 80a2e6e408a35547b147fe59d43c54b1f6981b47178247d3554c8ef2 |
| id | 05f311e9-1ef4-4acd-b467-adb59f6c2f93 |
| image | debian-10.0-buster (deprecated 2020-10-16) (031d2d76-8368-4066-a502-d28107d0195e) |
| key_name | None |
| name | deployment-puppetdb03 |
| progress | 0 |
| project_id | deployment-prep |
| properties | |
| security_groups | name='default' |
| status | ACTIVE |
| updated | 2020-10-02T16:42:22Z |
| user_id | krenair |
| volumes_attached | |
+-------------------------------------+-----------------------------------------------------------------------------------+
3. Resize the instance to the flavor ID of your choosing:
user@cloudcontrol1003:~$ OS_PROJECT_ID=PROJECT-ID sudo wmcs-openstack server resize --flavor FLAVOR-ID SERVER-ID
4. The instance will be in an intermediate state (VERIFY_RESIZE). Verify that that's the case:
user@cloudcontrol1003:~$ OS_PROJECT_ID=PROJECT-ID sudo wmcs-openstack server show SERVER-ID
+-------------------------------------+-----------------------------------------------------------------------------------+
| Field | Value |
+-------------------------------------+-----------------------------------------------------------------------------------+
| OS-DCF:diskConfig | AUTO |
| OS-EXT-AZ:availability_zone | nova |
| OS-EXT-SRV-ATTR:host | cloudvirt1023 |
| OS-EXT-SRV-ATTR:hypervisor_hostname | cloudvirt1023.eqiad.wmnet |
| OS-EXT-SRV-ATTR:instance_name | i-00011964 |
| OS-EXT-STS:power_state | Running |
| OS-EXT-STS:task_state | None |
| OS-EXT-STS:vm_state | resized |
| OS-SRV-USG:launched_at | 2020-12-23T18:47:49.000000 |
| OS-SRV-USG:terminated_at | None |
| accessIPv4 | |
| accessIPv6 | |
| addresses | lan-flat-cloudinstances2b=172.16.0.149 |
| config_drive | |
| created | 2020-01-21T22:40:39Z |
| flavor | g2.cores2.ram4.disk40 (2a6fca3c-9acd-42c0-8284-929e5345b607) |
| hostId | 1d17668b9d52959efb4c0fb06e0ff7bf101a2557e213dbd8f1e63bd6 |
| id | 05f311e9-1ef4-4acd-b467-adb59f6c2f93 |
| image | debian-10.0-buster (deprecated 2020-10-16) (031d2d76-8368-4066-a502-d28107d0195e) |
| key_name | None |
| name | deployment-puppetdb03 |
| progress | 0 |
| project_id | deployment-prep |
| properties | |
| security_groups | name='default' |
| status | VERIFY_RESIZE |
| updated | 2020-12-23T18:47:49Z |
| user_id | krenair |
| volumes_attached | |
+-------------------------------------+-----------------------------------------------------------------------------------+
5. Confirm that the VM has the characteristics of the new flavor:
username@servername:~$ free -m
total used free shared buff/cache available
Mem: 3955 278 3305 7 370 3439
Swap: 510 0 510
username@servername:~$ cat /proc/cpuinfo | grep ^processor
processor : 0
processor : 1
6. Now confirm the resize as successful in OpenStack to complete the process:
user@cloudcontrol1003:~$ OS_PROJECT_ID=PROJECT-ID sudo wmcs-openstack server resize --confirm SERVER-ID