10:09 a.m.
Hi all,
I have installed the ovirt-engine-sdk-python using pip3 in my python3
virtaul environment in my personal laptop
(base) kris@my-ThinkPad-X270:~$ pip install ovirt-engine-sdk-python
Collecting ovirt-engine-sdk-python
Downloading ovirt-engine-sdk-python-4.4.14.tar.gz (335 kB)
|████████████████████████████████| 335 kB 166 kB/s
Collecting pycurl>=7.19.0
Downloading pycurl-7.43.0.6.tar.gz (222 kB)
|████████████████████████████████| 222 kB 496 kB/s
Requirement already satisfied: six in
./training/lib/python3.7/site-packages (from ovirt-engine-sdk-python)
(1.15.0)
Building wheels for collected packages: ovirt-engine-sdk-python, pycurl
Building wheel for ovirt-engine-sdk-python (setup.py) ... done
Created wheel for ovirt-engine-sdk-python:
filename=ovirt_engine_sdk_python-4.4.14-cp37-cp37m-linux_x86_64.whl
size=300970
sha256=128ee03642c36094d62a04435bf5def1e5f8eb2c800f97132e8da02665d227a8
Stored in directory:
/home/kris/.cache/pip/wheels/2f/65/60/6a222dcdec777ae59bacb3f51a0a93e6cf9547b82cb0102db6
Building wheel for pycurl (setup.py) ... done
Created wheel for pycurl:
filename=pycurl-7.43.0.6-cp37-cp37m-linux_x86_64.whl size=269770
sha256=2cf705a2246041f9eaa5cbb19c530470edad7f476a0a7eb04c4877931699bea9
Stored in directory:
/home/kris/.cache/pip/wheels/f2/32/dc/9ccf4566cfe0a7a11ee304c11af36a1e341a16fa30e74fb26e
Successfully built ovirt-engine-sdk-python pycurl
Installing collected packages: pycurl, ovirt-engine-sdk-python
Successfully installed ovirt-engine-sdk-python-4.4.14 pycurl-7.43.0.6
WARNING: You are using pip version 21.0.1; however, version 21.2.2 is
available.
You should consider upgrading via the '/home/kris/training/bin/python3.7 -m
pip install --upgrade pip' command.
(base) kris@my-ThinkPad-X270:~$ which pip
/home/kris/anaconda3/bin/pip
(base) kris@my-ThinkPad-X270:~$ pip --version
pip 21.0.1 from /home/kris/training/lib/python3.7/site-packages/pip (python
3.7)
(base) kris@my-ThinkPad-X270:~$ pwd
/home/kris
and Created file in the user kris home directory in the same laptop // Is
what I am doing right ?
(base) kris@my-ThinkPad-X270:~$ cat ~/.config/ovirt.conf
[engine-dev]
engine_url=https://engine-dev // what is this engine url ? its the rhevm
ovirt url this our service provider may can provide right ?
username=admin@internal
password=mypassword
cafile=/etc/pki/vdsm/certs/cacert.pem // I dont have any cacert.pem
file in my laptop's /etc/pki/vdsm/certs/cacert.pem no folder at all like
this
(base) kris@my-ThinkPad-X270:~$ pwd
/home/kris
(base) kris@my-ThinkPad-X270:~$
But I couldn't find any examples folder where I can find the
download_disk.py // So I have downloaded files for
ovirt-engne-sdk-python-4.1.3.tar.gz
and untarred the files where I am able to find the download_disk.py
#####
(base)
kris@my-ThinkPad-X270:~/OVIRT_PYTON_SDK_SOURCE_FILES/ovirt-engine-sdk-python-4.1.3/examples$
ls
add_affinity_label.py add_vm_from_template_version.py
follow_vm_links.py set_vm_lease_storage_domain.py
add_bond.py add_vm_nic.py
get_display_ticket.py set_vm_serial_number.py
add_cluster.py add_vm.py
import_external_vm.py show_summary.py
add_data_center.py add_vm_snapshot.py
import_vm.py start_vm.py
add_floating_disk.py add_vm_with_sysprep.py
list_affinity_labels.py start_vm_with_boot_devices.py
add_group.py add_vnc_console.py
list_glance_images.py start_vm_with_cloud_init.py
add_host.py assign_affinity_label_to_vm.py
list_roles.py stop_vm.py
add_independet_vm.py assign_permission.py
list_tags_of_vm.py test_connection.py
add_instance_type.py assign_tag_to_vm.py
list_tags.py unassign_tag_to_vm.py
add_mac_pool.py attach_nfs_data_storage_domain.py
list_vm_disks.py update_data_center.py
add_nfs_data_storage_domain.py attach_nfs_iso_storage_domain.py
list_vm_snapshots.py update_fencing_options.py
add_nfs_iso_storage_domain.py change_vm_cd.py
list_vms.py update_quota_limits.py
add_openstack_image_provider.py clone_vm_from_snapshot.py
page_vms.py upload_disk.py
add_role.py connection_builder.py
remove_host.py vm_backup.py
add_tag.py disable_compression.py
remove_tag.py
add_user_ssh_public_key.py download_disk.py
remove_vm.py
add_vm_disk.py enable_serial_console.py
search_vms.py
(base)
kris@my-ThinkPad-X270:~/OVIRT_PYTON_SDK_SOURCE_FILES/ovirt-engine-sdk-python-4.1.3/examples$
Can I execute now the following from my laptop ? so that it will connect to
the rhevm host node and download the disks ?
(base) kris@my-ThinkPad-X270:$ python3 download_disk.py -c engine-dev
MY_vm_blah_Id /var/tmp/disk1.raw //is this correct ?
My laptop doesn't have space to accommodate 300 GB so can I attache a usb
harddisk and can I specify its mount point ? or any other suggestions or
correcton ? Because its a live host. I can't do trail and error on service
maintainer's rhevm host machines.
kindly correct me if any thing wrong in my steps . I have to perform this
script running on mylaptop to rhevm host machines without breaking
anything.
Kindly guide me.
Kris
On Wed, Aug 4, 2021 at 1:38 AM Nir Soffer <nsoffer(a)redhat.com> wrote:
On Tue, Aug 3, 2021 at 7:29 PM KK CHN <kkchn.in(a)gmail.com>
wrote:
>
> I have asked our VM maintainer to run the command
>
> # virsh -r dumpxml vm-name_blah //as Super user
>
> But no output : No matching domains found that was the TTY output on
that rhevm node when I executed the command.
>
> Then I tried to execute # virsh list // it doesn't list any VMs
!!! ( How come this ? Does the Rhevm node need to enable any CLI with
License key or something to list Vms or to dumpxml with virsh ? or its
CLI commands ?
RHV undefine the vms when they are not running.
> Any way I want to know what I have to ask the maintainer to provide
a working a working CLI or ? which do the tasks expected to do with
command line utilities in rhevm.
>
If the vm is not running you can get the vm configuration from ovirt
using the API:
GET /api/vms/{vm-id}
You may need more API calls to get info about the disks, follow the <links>
in the returned xml.
> I have one more question : Which command can I execute on an rhevm
node to manually export ( not through GUI portal) a VMs to required
format ?
>
> For example; 1. I need to get one VM and disks attached to it as
raw images. Is this possible how?
>
> and another 2. VM and disk attached to it as Ova or( what other good
format) which suitable to upload to glance ?
Arik can add more info on exporting.
> Each VMs are around 200 to 300 GB with disk volumes ( so where should
be the images exported to which path to specify ? to the host node(if the
host doesn't have space or NFS mount ? how to specify the target location
where the VM image get stored in case of NFS mount ( available ?)
You have 2 options:
- Download the disks using the SDK
- Export the VM to OVA
When exporting to OVA, you will always get qcow2 images, which you can
later
convert to raw using "qemu-img convert"
When downloading the disks, you control the image format, for example
this will download
the disk in any format, collapsing all snapshots to the raw format:
$ python3
/usr/share/doc/python3-ovirt-engine-sdk4/examples/download_disk.py
-c engine-dev 3649d84b-6f35-4314-900a-5e8024e3905c /var/tmp/disk1.raw
This requires ovirt.conf file:
$ cat ~/.config/ovirt.conf
[engine-dev]
engine_url = https://engine-dev
username = admin@internal
password = mypassword
cafile = /etc/pki/vdsm/certs/cacert.pem
Nir
> Thanks in advance
>
>
> On Mon, Aug 2, 2021 at 8:22 PM Nir Soffer <nsoffer(a)redhat.com> wrote:
>>
>> On Mon, Aug 2, 2021 at 12:22 PM <kkchn.in(a)gmail.com> wrote:
>> >
>> > I have few VMs in Redhat Virtualisation environment RHeV ( using
Rhevm4.1 ) managed by a third party
>> >
>> > Now I am in the process of migrating those VMs to my cloud setup
with OpenStack ussuri version with KVM hypervisor and Glance storage.
>> >
>> > The third party is making down each VM and giving the each VM image
with their attached volume disks along with it.
>> >
>> > There are three folders which contain images for each VM .
>> > These folders contain the base OS image, and attached LVM disk images
( from time to time they added hard disks and used LVM for storing data )
where data is stored.
>> >
>> > Is there a way to get all these images to be exported as Single
image file Instead of multiple image files from Rhevm it self. Is this
possible ?
>> >
>> > If possible how to combine e all these disk images to a single image
and that image can upload to our cloud glance storage as a single image ?
>>
>> It is not clear what is the vm you are trying to export. If you share
>> the libvirt xml
>> of this vm it will be more clear. You can use "sudo virsh -r dumpxml
vm-name".
>>
>> RHV supports download of disks to one image per disk, which you can move
>> to another system.
>>
>> We also have export to ova, which creates one tar file with all
exported disks,
>> if this helps.
>>
>> Nir
>>