Przebudowa instancji z poziomu CLI
W niektórych przypadkach nie jest możliwe wprowadzenie zmian na istniejącej instancji i musi być ona przebudowana. Przykładowo, przebudowa jest wymagana jeśli chcemy zmienić typ dysku instancji (Standard 2.000 IOPS, Fast 8.000 IOPS, Ultra 15.000 IOPS), który jest dyskiem głównym root.
Innym przypadkiem, dość powszechnym, jest chęć odzyskania dostępu do instancji po uprzedniej utracie *hasła/klucza.
(*możliwe w przypadku, gdy proces cloud-init nie został uprzednio wyłączony)
Tworzenie backupu z wykorzystaniem snaphostu
UWAGA: Snapshot jest objęty limitem dla danego typu storage i jest liczony jako wolumen. Dla ułatwienia rachunku, należy przyjąć regułę: wolumen + snapshot + nowy_wolumen = skonsumowane zasoby.
Na czas tworzenia snapshotu oraz odtworzenia instancji, należy zarezerwować odpowiednią ilość zasobów.
Przykład:
chcemy wykonać operację zmiany: 1 wolumen 100 GB 2.000 IOPS -> 1 wolumen 100 GB 8.000 IOPS:
wykorzystane: 100 GB 2.000 IOPS
potrzebujemy: min. dodatkowe 100 GB dla typu 2.000 IOPS + 100 GB dla typu 8.000 IOPS
Aby zweryfikować dostępne zasoby, możemy użyć polecenia:
openstack quota show --volume --usage | grep -vE "\-1"
(python-3.10) [2025-06-30 11:41][WAW_1B]root@NB-374:~$openstack quota show --volume --usage | grep -vE "\-1"
+--------------------------------------+-------+--------+----------+
| Resource | Limit | In Use | Reserved |
+--------------------------------------+-------+--------+----------+
| volumes | 30 | 11 | 0 |
| snapshots | 10 | 3 | 0 |
| gigabytes | 1000 | 168 | 0 |
| backups | 0 | 0 | 0 |
| gigabytes_LUKS_25000iops | 0 | 0 | 0 |
| gigabytes_LUKS_2000iops | 0 | 0 | 0 |
| gigabytes_LUKS_8000iops | 0 | 0 | 0 |
| gigabytes_LUKS_15000iops | 0 | 0 | 0 |
| gigabytes_25000iops | 0 | 0 | 0 |
| gigabytes_15000iops | 0 | 0 | 0 |
| gigabytes_8000iops | 500 | 5 | 0 |
| gigabytes_2000iops | 500 | 163 | 0 |
| groups | 10 | 0 | 0 |
| backup-gigabytes | 1000 | 0 | 0 |
+--------------------------------------+-------+--------+----------+
W pierwszym kroku tworzymy snapshot instancji lub wolumenu, który nas interesuje.
Istnieje różnica podczas tworzenia snapshotów, o której należy pamiętać.
openstack server image createtworzy zrzut całej instancji - spowoduje to stworzenie snapshotów dla wszystkich podpiętych wolumenów oraz zostanie stworzony gotowy imageopenstack volume snapshot createtworzy tylko snapshota wskazanego wolumenu, np. roota/systemowy
Lista instancji w naszym projekcie:
(python-3.10) [2025-06-30 11:41][WAW_1B]root@NB-374:~$openstack server list
+--------------------------------------+----------------+---------+-----------------------------------------------+--------------------------+----------+
| ID | Name | Status | Networks | Image | Flavor |
+--------------------------------------+----------------+---------+-----------------------------------------------+--------------------------+----------+
| c78b97a7-be95-4753-b747-208a59c3ed1a | pb-vdi-03 | SHUTOFF | pb-network=192.168.100.192 | N/A (booted from volume) | m4.c4 |
| 77fcfdc1-bee4-468d-8f22-feba77bd09bd | pb-testy-disk | ACTIVE | pb-network=192.168.100.228, 77.79.247.219 | N/A (booted from volume) | m1.c2-hc |
| 44eb8dcd-0209-49e4-af6d-0610fc3e46f0 | pb-test-hc | ACTIVE | pb-network=192.168.100.220 | N/A (booted from volume) | m1.c2-hc |
| 9027776c-9e03-40c0-892d-4a5ee2924e54 | pb-custom-test | ACTIVE | | N/A (booted from volume) | m2.c1 |
| 81c323d4-cef4-48d7-8a90-cff8809942ee | pb-nginx-lab | ACTIVE | pb-network=192.168.100.102 | N/A (booted from volume) | m2.c2 |
| 458450b1-1469-40ac-a002-a4282a704ecf | pb-lab-ssh | ACTIVE | pb-network=192.168.100.237 | N/A (booted from volume) | m2.c1 |
+--------------------------------------+----------------+---------+-----------------------------------------------+--------------------------+----------+
Za pomocą openstack server volume list <INSTANCE_UUID> sprawdzamy podpięte wolumeny:
(python-3.10) [2025-06-30 12:22][WAW_1B]root@NB-374:~$openstack server volume list 77fcfdc1-bee4-468d-8f22-feba77bd09bd
+----------+--------------------------------------+--------------------------------------+------+------------------------+--------------------------------------+--------------------------------------+
| Device | Server ID | Volume ID | Tag | Delete On Termination? | Attachment ID | BlockDeviceMapping UUID |
+----------+--------------------------------------+--------------------------------------+------+------------------------+--------------------------------------+--------------------------------------+
| /dev/sda | 77fcfdc1-bee4-468d-8f22-feba77bd09bd | 87514286-2cd4-464f-ad26-5e57c4878c84 | None | False | be9e0296-fa70-40df-a8ee-d93cd3002b23 | f2b23870-567f-4866-83ca-f20ae71abc37 |
| /dev/sdb | 77fcfdc1-bee4-468d-8f22-feba77bd09bd | 244f4db3-0e77-4543-9148-06061685d6df | None | False | 8e13f3c2-b762-4f39-a0bd-87a5d5fb5f57 | 315fa31d-b8d3-4db4-8842-3b97c2033163 |
| /dev/sdc | 77fcfdc1-bee4-468d-8f22-feba77bd09bd | 05ddbcd6-ee07-4f3e-93c4-fb5e2a7e58d7 | None | False | f2de4529-cdd9-46ca-a5c5-8d41af26b5e1 | 747459b8-f25c-454b-807f-d10e4e395a33 |
+----------+--------------------------------------+--------------------------------------+------+------------------------+--------------------------------------+--------------------------------------+
Podczas tworzenia snapshotu, dla zachowania integralności oraz synchronizacji danych, zaleca się zatrzymanie instancji. Jeśli jednak zdecydujemy się na zrobienie migawki w trakcie pracy instancji, bądź nie możemy sobie pozwolić na przestój, możemy wykonać snapshot-live.
A) Tworzenie snapshotu całej instancji:
(python-3.10) [2025-06-30 13:18][WAW_1B]root@NB-374:~$openstack server image create 77fcfdc1-bee4-468d-8f22-feba77bd09bd --wait --name copy-1-all-disk
Utworzony snapshot powędrował jako image oraz mamy gotowe snapshoty wszystkich podpiętych wolumenów. Na tym etapie możemy odtworzyć instancję, zachować jako kopia przed planowanymi testami bądź pobrać do siebie na lokalny dysk.
Aby zweryfikować snapshoty oraz image, użyj poleceń:
(python-3.10) [2025-06-30 13:21][WAW_1B]root@NB-374:~$openstack volume snapshot list
+--------------------------------------+--------------------------------+-------------+-----------+------+
| ID | Name | Description | Status | Size |
+--------------------------------------+--------------------------------+-------------+-----------+------+
| e955b876-14eb-4785-ad7f-b88bb09ee0a2 | snapshot for copy-1-all-disk | | available | 5 |
| 6b482112-bbfd-4ad9-9978-a67e02194371 | snapshot for copy-1-all-disk | | available | 7 |
| 43fe2c49-3485-4d84-9126-99abb75a7d27 | snapshot for copy-1-all-disk | | available | 10 |
+--------------------------------------+--------------------------------+-------------+-----------+------+
(python-3.10) [2025-06-30 13:19][WAW_1B]root@NB-374:~$openstack image list
+--------------------------------------+--------------------------------------------+--------+
| ID | Name | Status |
+--------------------------------------+--------------------------------------------+--------+
| 88b8c26f-38d3-43a4-9d5c-9415a0529f67 | copy-1-all-disk | active |
+--------------------------------------+--------------------------------------------+--------+
B) Tworzenie snapshotu pojedyńczego dysku (np. systemowy):
Listujemy podpięte dyski do instancji i szukamy root disk («/dev/sda», flaga boot):
(python-3.10) [2025-06-30 13:28][WAW_1B]root@NB-374:~$openstack server volume list 77fcfdc1-bee4-468d-8f22-feba77bd09bd
+----------+--------------------------------------+--------------------------------------+------+------------------------+--------------------------------------+--------------------------------------+
| Device | Server ID | Volume ID | Tag | Delete On Termination? | Attachment ID | BlockDeviceMapping UUID |
+----------+--------------------------------------+--------------------------------------+------+------------------------+--------------------------------------+--------------------------------------+
| /dev/sda | 77fcfdc1-bee4-468d-8f22-feba77bd09bd | 87514286-2cd4-464f-ad26-5e57c4878c84 | None | False | be9e0296-fa70-40df-a8ee-d93cd3002b23 | f2b23870-567f-4866-83ca-f20ae71abc37 |
| /dev/sdb | 77fcfdc1-bee4-468d-8f22-feba77bd09bd | 244f4db3-0e77-4543-9148-06061685d6df | None | False | 8e13f3c2-b762-4f39-a0bd-87a5d5fb5f57 | 315fa31d-b8d3-4db4-8842-3b97c2033163 |
| /dev/sdc | 77fcfdc1-bee4-468d-8f22-feba77bd09bd | 05ddbcd6-ee07-4f3e-93c4-fb5e2a7e58d7 | None | False | f2de4529-cdd9-46ca-a5c5-8d41af26b5e1 | 747459b8-f25c-454b-807f-d10e4e395a33 |
+----------+--------------------------------------+--------------------------------------+------+------------------------+--------------------------------------+--------------------------------------+
Tworzymy snapshota, korzystamy z flagi --force aby wymusić tryb live:
(python-3.10) [2025-06-30 13:31][WAW_1B]root@NB-374:~$openstack volume snapshot create --description "root disk" --volume 87514286-2cd4-464f-ad26-5e57c4878c84 root-disk-snap
Invalid volume: Volume 87514286-2cd4-464f-ad26-5e57c4878c84 status must be available, but current status is: in-use. (HTTP 400) (Request-ID: req-8805d541-49fd-45a2-acfd-73d787bf1e47)
(python-3.10) [2025-06-30 13:33][WAW_1B]root@NB-374:~$openstack volume snapshot create --description "root disk" --volume 87514286-2cd4-464f-ad26-5e57c4878c84 root-disk-snap --force
+-------------+--------------------------------------+
| Field | Value |
+-------------+--------------------------------------+
| created_at | 2025-06-30T11:34:38.843577 |
| description | root disk |
| id | 80509bd7-d742-49a5-a6cd-bdf50ac0a06e |
| name | root-disk-snap |
| properties | |
| size | 10 |
| status | creating |
| updated_at | None |
| volume_id | 87514286-2cd4-464f-ad26-5e57c4878c84 |
+-------------+--------------------------------------+
Weryfikujemy:
(python-3.10) [2025-06-30 13:34][WAW_1B]root@NB-374:~$openstack volume snapshot list
+--------------------------------------+--------------------------------+-------------+-----------+------+
| ID | Name | Description | Status | Size |
+--------------------------------------+--------------------------------+-------------+-----------+------+
| 80509bd7-d742-49a5-a6cd-bdf50ac0a06e | root-disk-snap | root disk | available | 10 |
| e955b876-14eb-4785-ad7f-b88bb09ee0a2 | snapshot for copy-1-all-disk | | available | 5 |
| 6b482112-bbfd-4ad9-9978-a67e02194371 | snapshot for copy-1-all-disk | | available | 7 |
| 43fe2c49-3485-4d84-9126-99abb75a7d27 | snapshot for copy-1-all-disk | | available | 10 |
+--------------------------------------+--------------------------------+-------------+-----------+------+
Odtworzenie instancji z wykorzystanie snapshotu
W poprzednim rozdziale stworzyliśmy snapshoty niezbędne do odtworzenia instancji. Na tym etapie możemy:
odtworzyć instancję z innym typem dysku (np. zmiana 2.000 IOPS -> 8.000 IOPS etc.)
odtworzyć instancję i uzyskać dostęp np. po utracie hasła/klucza (*wymagany aktywny cloud-init)
stworzyć kopię instancji produkcyjnej
A) Odtworzenie instancji z wcześniej utworzonego snapshota całej instancji
Weryfikujemy nasz wcześniej utworzony image:
(python-3.10) [2025-06-30 13:19][WAW_1B]root@NB-374:~$openstack image list
+--------------------------------------+--------------------------------------------+--------+
| ID | Name | Status |
+--------------------------------------+--------------------------------------------+--------+
| 88b8c26f-38d3-43a4-9d5c-9415a0529f67 | copy-1-all-disk | active |
+--------------------------------------+--------------------------------------------+--------+
(python-3.10) [2025-06-30 13:34][WAW_1B]root@NB-374:~$openstack image show 88b8c26f-38d3-43a4-9d5c-9415a0529f67
+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| checksum | d41d8cd98f00b204e9800998ecf8427e |
| container_format | bare |
| created_at | 2025-06-30T11:19:11Z |
| disk_format | qcow2 |
| file | /v2/images/88b8c26f-38d3-43a4-9d5c-9415a0529f67/file |
| id | 88b8c26f-38d3-43a4-9d5c-9415a0529f67 |
| min_disk | 0 |
| min_ram | 0 |
| name | copy-1-all-disk |
| owner | 14c8ad7ba1734841a8a05609e3925570 |
| properties | base_image_ref='', bdm_v2='True', block_device_mapping='[{"volume_type": null, "destination_type": "volume", "encryption_options": null, "no_device": null, "device_name": "/dev/sda", |
| | "delete_on_termination": false, "guest_format": null, "source_type": "snapshot", "volume_id": null, "encrypted": null, "encryption_format": null, "image_id": null, "disk_bus": "scsi", "tag": null, |
| | "boot_index": 0, "snapshot_id": "43fe2c49-3485-4d84-9126-99abb75a7d27", "volume_size": 10, "device_type": "disk", "encryption_secret_uuid": null}, {"volume_type": null, "destination_type": "volume", |
| | "encryption_options": null, "no_device": null, "device_name": "/dev/sdb", "delete_on_termination": false, "guest_format": null, "source_type": "snapshot", "volume_id": null, "encrypted": null, |
| | "encryption_format": null, "image_id": null, "disk_bus": null, "tag": null, "boot_index": null, "snapshot_id": "e955b876-14eb-4785-ad7f-b88bb09ee0a2", "volume_size": 5, "device_type": null, |
| | "encryption_secret_uuid": null}, {"volume_type": null, "destination_type": "volume", "encryption_options": null, "no_device": null, "device_name": "/dev/sdc", "delete_on_termination": false, "guest_format": |
| | null, "source_type": "snapshot", "volume_id": null, "encrypted": null, "encryption_format": null, "image_id": null, "disk_bus": null, "tag": null, "boot_index": null, "snapshot_id": |
| | "6b482112-bbfd-4ad9-9978-a67e02194371", "volume_size": 7, "device_type": null, "encryption_secret_uuid": null}]', boot_roles='member,creator,reader,load-balancer_member', hw_cdrom_bus='sata', |
| | hw_disk_bus='scsi', hw_input_bus='usb', hw_machine_type='q35', hw_pointer_model='usbtablet', hw_qemu_guest_agent='yes', hw_scsi_model='virtio-scsi', hw_video_model='virtio', hw_vif_model='virtio', |
| | locations='[{'url': 'file:///var/lib/glance/images/88b8c26f-38d3-43a4-9d5c-9415a0529f67', 'metadata': {'store': 'file'}}]', os_hash_algo='sha512', |
| | os_hash_value='cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e', os_hidden='False', os_require_quiesce='True', |
| | os_type='linux', owner_project_name='project-pb', owner_specified.openstack.md5='', owner_specified.openstack.object='images/Ubuntu-24.04-amd64-20240426', owner_specified.openstack.sha256='', |
| | owner_user_name='pb', password_0='AR7F93HTgY4xFV79Xy6Lp1fYcIdbd/sKWzdnEz6Tcc6QAVNQmG8ZWUKpxm6LNxQ2TZngTWdM9l2OEAhm7T05Z6ebb3BFasU5KXtjxh2mLMRe9Zt/On4Cnh/GxvK59LdJUJbplGFTE8pjGaPclxlFA3WISR8X2NkCaCZlLn3H |
| | nn8/sOiD1dhBz66c0GHvN3CtJlg/jePgREOj1wMHDuu8zNINU1WDjVyTDDRhUSy4DWCk4cFcm9uZN+epLCcARD+', password_1='pFubeaLzaXGiI96OixVBPpRtBfhYDtjkaDHZ18PGCCaS1xSbU+XY6VlDOq/tR64zIG9JrQ4A1Ls4Vc36u3948Z/QFPKDwxdjEDoh5VWP |
| | /UCagkL4WgmJWHSCswRzQvOz+swRms5YcQB9UVN3RiiO/kmr4HKT+gGOdlbL0nMWzu62z528iDghaMXmm2oxVyMC5B918UsqBZPIhUkcN3LYD9ddv+PvVeSSy6tgMYWgR/lzgs4RUyNWgNFdH0SKwqK', |
| | password_2='cWPYqptoyBQ4CBUZVr+HxGPHBFn0UiKLDBjQ8B/kD+2g42ZZIATS3WSXMD0G0xqnSQscgoMKJvReEtE4FeAuB9HRYQh32OX7acu3JDhi6+5iMokHO010TRMhMtWW5o15MGVEZaKpJMs47/V58eUBfG5bjfuTuan2pwtczyHiZ31SEo', password_3='', |
| | root_device_name='/dev/sda', stores='file' |
| protected | False |
| schema | /v2/schemas/image |
| size | 0 |
| status | active |
| tags | |
| updated_at | 2025-06-30T11:19:11Z |
| visibility | private |
+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
Tworzymy naszą instancję wskazując jako
--imagenaszą wcześniej utworzoną migawkę. W tej sytuacji został zmieniony flavor
openstack server create \
--image 88b8c26f-38d3-43a4-9d5c-9415a0529f67 \
--flavor m4.c4 \
--network pb-network \
--security-group pb-sec-group \
--security-group default \
--wait \
pb-testy-disk-from-snapshot
Flaga --wait czeka na potwierdzenie realizacji requestu, inaczej mówiąc, po ukończonym zadaniu dostaniemy podsumowanie wykonanej realizacji.
+-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| OS-DCF:diskConfig | MANUAL |
| OS-EXT-AZ:availability_zone | AZ1 |
| OS-EXT-SRV-ATTR:host | None |
| OS-EXT-SRV-ATTR:hostname | pb-testy-disk-from-snapshot |
| OS-EXT-SRV-ATTR:hypervisor_hostname | None |
| OS-EXT-SRV-ATTR:instance_name | None |
| OS-EXT-SRV-ATTR:kernel_id | None |
| OS-EXT-SRV-ATTR:launch_index | None |
| OS-EXT-SRV-ATTR:ramdisk_id | None |
| OS-EXT-SRV-ATTR:reservation_id | None |
| OS-EXT-SRV-ATTR:root_device_name | None |
| OS-EXT-SRV-ATTR:user_data | None |
| OS-EXT-STS:power_state | Running |
| OS-EXT-STS:task_state | None |
| OS-EXT-STS:vm_state | active |
| OS-SRV-USG:launched_at | 2025-06-30T12:04:50.000000 |
| OS-SRV-USG:terminated_at | None |
| accessIPv4 | None |
| accessIPv6 | None |
| addresses | pb-network=192.168.100.4 |
| adminPass | 96sAF9SZq8aF |
| config_drive | None |
| created | 2025-06-30T12:00:47Z |
| description | None |
| flavor | description=, disk='0', ephemeral='0', extra_specs.aggregate_instance_extra_specs:cpu_type='regular', extra_specs.quota:disk_total_iops_sec='200', id='m4.c4', is_disabled=, |
| | is_public='True', location=, name='m4.c4', original_name='m4.c4', ram='4096', rxtx_factor=, swap='0', vcpus='4' |
| hostId | e5e4bff645a240c159548a6f39ce589750c45301ddb8494a0549910f |
| host_status | None |
| id | db859883-b7df-4c81-913c-64d631528040 |
| image | copy-1-all-disk (88b8c26f-38d3-43a4-9d5c-9415a0529f67) |
| key_name | None |
| locked | None |
| locked_reason | None |
| name | pb-testy-disk-from-snapshot |
| pinned_availability_zone | None |
| progress | None |
| project_id | 14c8ad7ba1734841a8a05609e3925570 |
| properties | None |
| security_groups | name='pb-sec-group' |
| | name='default' |
| server_groups | None |
| status | ACTIVE |
| tags | |
| trusted_image_certificates | None |
| updated | 2025-06-30T12:04:50Z |
| user_id | cc0b2429f0ea446f857de292784462cc |
| volumes_attached | delete_on_termination='False', id='16fec94c-84a6-4bca-88bb-900a149d343e' |
| | delete_on_termination='False', id='0b2a8238-c0df-4ebd-9bf0-004e4265787c' |
| | delete_on_termination='False', id='ca2f9a6d-1657-4ea5-8e6f-def85f342b22' |
+-------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
B) Odtworzenie instancji ze zmienionym typem wolumenu root (np. zmiana IOPS):
Do tej operacji potrzebujemy snapshota wolumenu root/systemowego.
Weryfikujemy snapshoty:
Tworzymy nowy wolumen z wcześniej utworzonego snapshota oraz weryfikujemy:
(python-3.10) [2025-06-30 14:50][WAW_1B]root@NB-374:~$openstack volume create --snapshot 80509bd7-d742-49a5-a6cd-bdf50ac0a06e --type 8000iops --bootable root-disk-retyped
(...)
(python-3.10) [2025-06-30 14:50][WAW_1B]root@NB-374:~$openstack volume list --long | grep root-disk
| 726a603b-4917-4bfa-bb4a-b905d14b6589 | root-disk-retyped | available | 10 | 8000iops | true | | |
Rekreujemy instancję wskazując jako źródło nasz nowy wolumen, dodatkowo zmieniamy interesujące nas parametry (np. flavor, klucze ssh):
(python-3.10) [2025-06-30 14:50][WAW_1B]root@NB-374:~$openstack server create \
--volume 726a603b-4917-4bfa-bb4a-b905d14b6589 \
--flavor m4.c4 \
--network pb-network \
--security-group pb-sec-group \
--security-group default \
--key-name pb-ssh-test-rsa \
--wait \
pb-testy-disk-volume-retyped
Instancja została utworzona. Weryfikujemy parametry:
+--------------------------------------+------------------------------+---------+-----------------------------------------------+--------------------------+----------+
| ID | Name | Status | Networks | Image | Flavor |
+--------------------------------------+------------------------------+---------+-----------------------------------------------+--------------------------+----------+
| d929cd77-5978-4de3-854e-92e7a286ed13 | pb-testy-disk-volume-retyped | ACTIVE | pb-network=192.168.100.210 | N/A (booted from volume) | m4.c4 |
| 77fcfdc1-bee4-468d-8f22-feba77bd09bd | pb-testy-disk | ACTIVE | pb-network=192.168.100.228 | N/A (booted from volume) | m1.c2-hc |
+--------------------------------------+------------------------------+---------+-----------------------------------------------+--------------------------+----------+
Zmiana flavora instancji
W przypadku, gdy chcemy zmniejszyć ilość CPU/RAM lub zwiększyć, konieczne jest przebudowanie instancji do docelowego typu flavora.
Weryfikujemy dostępne zasoby oraz flavory
openstack flavor listopenstack quota show --compute --usage | grep -Ev "\-1"
(python-3.10) [2025-06-30 15:20][WAW_1B]root@NB-374:~$openstack flavor list
+--------------------------------------+---------------+------+------+-----------+-------+-----------+
| ID | Name | RAM | Disk | Ephemeral | VCPUs | Is Public |
+--------------------------------------+---------------+------+------+-----------+-------+-----------+
| 18d5a1c2-4ab4-47e1-af39-40b94cf7fdfd | m4.c1.d50 | 4096 | 50 | 0 | 1 | False |
| 2ee37eb7-a7a9-42d2-bd88-bba6d396d727 | m1.c2-hc | 1024 | 0 | 0 | 2 | False |
| 493f12da-9b86-4704-97cd-1d4bc5976d24 | m8.c1.d50-hc | 8192 | 50 | 0 | 1 | False |
| 53c7ef5d-a0a6-4215-a4a0-ea49bff43008 | local-storage | 1024 | 10 | 0 | 1 | False |
| 75e3732b-cfe0-493a-a3ba-7d28e07adbf2 | m2.c1 | 2048 | 0 | 0 | 1 | False |
| 85416389-769e-4f59-a3a4-536a814005e5 | m2.c2 | 2048 | 0 | 0 | 2 | False |
| a2abe272-2517-4a02-9820-00e656a1de6f | m2.c4 | 2048 | 0 | 0 | 4 | False |
| fcb4cbc1-535e-47a0-8fa2-e1cc20791b8d | m4.c4 | 4096 | 0 | 0 | 4 | False |
+--------------------------------------+---------------+------+------+-----------+-------+-----------+
(..)
(python-3.10) [2025-06-30 15:20][WAW_1B]root@NB-374:~$openstack quota show --compute --usage | grep -Ev "\-1"
+----------------------+-------+--------+----------+
| Resource | Limit | In Use | Reserved |
+----------------------+-------+--------+----------+
| cores | 20 | 16 | 0 |
| instances | 30 | 7 | 0 |
| ram | 51200 | 16384 | 0 |
| fixed_ips | 0 | 0 | 0 |
| floating_ips | 0 | 0 | 0 |
| networks | 0 | 0 | 0 |
| security_group_rules | 0 | 0 | 0 |
| security_groups | 0 | 0 | 0 |
| injected-file-size | 10240 | 0 | 0 |
| injected-path-size | 255 | 0 | 0 |
| injected-files | 5 | 0 | 0 |
| key-pairs | 100 | 0 | 0 |
| properties | 128 | 0 | 0 |
| server-group-members | 10 | 0 | 0 |
| server-groups | 10 | 0 | 0 |
+----------------------+-------+--------+----------+
Zmieniamy instancję
pb-testy-disk-volume-retypedz flavora 4.4 na 2.2.
openstack server listopenstack server resize --flavor m2.c2 pb-testy-disk-volume-retypedopenstack server show pb-testy-disk-volume-retyped -c status -c flavoropenstack server resize confirm pb-testy-disk-volume-retypedopenstack server show pb-testy-disk-volume-retyped -c status -c flavor
(python-3.10) [2025-06-30 15:17][WAW_1B]root@NB-374:~$openstack server list
+--------------------------------------+------------------------------+---------+-----------------------------------------------+--------------------------+----------+
| ID | Name | Status | Networks | Image | Flavor |
+--------------------------------------+------------------------------+---------+-----------------------------------------------+--------------------------+----------+
| d929cd77-5978-4de3-854e-92e7a286ed13 | pb-testy-disk-volume-retyped | ACTIVE | pb-network=192.168.100.210 | N/A (booted from volume) | m4.c4 |
(..)
(python-3.10) [2025-06-30 15:22][WAW_1B]root@NB-374:~$openstack server resize --flavor m2.c2 pb-testy-disk-volume-retyped
(python-3.10) [2025-06-30 15:28][WAW_1B]root@NB-374:~$openstack server show pb-testy-disk-volume-retyped -c status -c flavor
+--------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+--------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| flavor | description=, disk='0', ephemeral='0', extra_specs.aggregate_instance_extra_specs:cpu_type='regular', extra_specs.quota:disk_total_iops_sec='200', id='m2.c2', is_disabled=, is_public='True', location=, name='m2.c2', |
| | original_name='m2.c2', ram='2048', rxtx_factor=, swap='0', vcpus='2' |
| status | VERIFY_RESIZE |
+--------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
(python-3.10) [2025-06-30 15:30][WAW_1B]root@NB-374:~$openstack server resize confirm pb-testy-disk-volume-retyped
(python-3.10) [2025-06-30 15:30][WAW_1B]root@NB-374:~$openstack server show pb-testy-disk-volume-retyped -c status -c flavor
+--------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+--------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| flavor | description=, disk='0', ephemeral='0', extra_specs.aggregate_instance_extra_specs:cpu_type='regular', extra_specs.quota:disk_total_iops_sec='200', id='m2.c2', is_disabled=, is_public='True', location=, name='m2.c2', |
| | original_name='m2.c2', ram='2048', rxtx_factor=, swap='0', vcpus='2' |
| status | ACTIVE |
+--------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
(..)