On 08/22/2014 05:58 AM, Shanil S wrote:
Hi Juan,
Thanks for your replies..
Regarding the rebuild VM, Is that any method to reinstall the os on the
VM without remove it or create a new one?
This is the same that with a physical machine: it all depends on the
facilities that you have available to boot the machine to the re-install
process. You can, for example, set you VM to boot from the network,
using PXE, and use your favorite system (manual setup of TFTP, cobbler,
foreman, etc) to re-install the OS. There are tons of options for this.
However, unless you have data in the VM that you want to preserve, it
may be easier and faster (specially if you are using templates) to
remove it and create a new one.
--
Regards
Shanil
On Thu, Aug 21, 2014 at 4:55 PM, Juan Hernandez <jhernand(a)redhat.com
<mailto:jhernand@redhat.com>> wrote:
On 08/20/2014 12:42 PM, Shanil S wrote:
> Hi,
>
>
> I would like to create the following functions using the ovirt api
>
> 1. Rebuild VM
What do you exactly mean by "rebuild vm"?
> 2. Restore the screenthots of one vm to another vm
What you can do is create a new VM from an existing snapshot, something
like this:
#!/bin/sh -ex
url="https://ovirt.example.com/ovirt-engine/api"
user="admin@internal"
password="******"
curl \
--verbose \
--insecure \
--request POST \
--header "Accept: application/xml" \
--header "Content-Type: application/xml" \
--user "${user}:${password}" \
--data "
<vm>
<name>myclone</name>
<cluster id='00000001-0001-0001-0001-000000000171'/>
<snapshots>
<snapshot id='f09a98fd-2c7e-40eb-a9ae-6b7f86412bb0'/>
</snapshots>
</vm>
" \
"${url}/vms"
You need to modify that script with your URL, user name, password,
cluster and snapshot id.
> 3. Display cpu,network etc usages
>
The statistics are available in the "statistics" sub-resource. For
example, if you want to get the statistics of a host you can do the
following:
#!/bin/sh -ex
url="https://ovirt.example.com/ovirt-engine/api"
user="admin@internal"
password="******"
curl \
--verbose \
--insecure \
--request GET \
--header "Accept: application/xml" \
--user "${user}:${password}" \
"${url}/hosts/40cc4c33-2560-4516-b028-1d59638139c3/statistics"
There you will find different statistics, like "memory.total",
"memory.used", etc. Take a look. Once you know what statistic you want
you can get its details like this:
curl \
--verbose \
--insecure \
--request GET \
--header "Accept: application/xml" \
--user "${user}:${password}" \
"${url}/hosts/40cc4c33-2560-4516-b028-1d59638139c3/statistics/7816602b-c05c-3db7-a4da-3769f7ad8896"
This can be cumbersome to do with a shell script, so you may want to use
the Python or Java SDKs, or just use directly the ovirt-shell:
$ ovirt-shell --insecure
URL:
https://ovirt.example.com/ovirt-engine/api
Username: admin@internal
Password: ******
[oVirt shell (connected)]# show statistic memory.total --host-identifier
myhost
id : 7816602b-c05c-3db7-a4da-3769f7ad8896
name : memory.total
description : Total memory
host-id : 40cc4c33-2560-4516-b028-1d59638139c3
type : GAUGE
unit : BYTES
values-type : INTEGER
values-value-datum: 2099249152
> I couldn't find out any direct api method to do the above, Is it
> possible to do these operations using api ? If anyone knows it please
> help me to sort out it.
>
>
>
> --
> Regards
> Shanil
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