Ovirt Java SDK access to 'next run' configuration
Hi, I'm developping (in JAVA) an automatic configuration manager to modify memory and cpu allocation (cpushares for the moment) updated on a calendar basis. It will also be used as a kind of enforcer/elastic scheduler on top of the ovirt policy scheduler. Because oVirt is not yet able to update memory and cpushares on live guests like XenServer, my configurator needs to know the running config and the next_run config as well, and force directly the config on live guests (with virsh schedinfo --live arg ? ). Unfortunately, the Host.getVMs().getById( "uuid" ) method returns only the running config so there's no way I can check if the future config is setup. Any suggestion? Best regards Sebastien
On 07/08/2016 04:09 PM, Sebastien Fuchs wrote:
Hi,
I'm developping (in JAVA) an automatic configuration manager to modify memory and cpu allocation (cpushares for the moment) updated on a calendar basis. It will also be used as a kind of enforcer/elastic scheduler on top of the ovirt policy scheduler.
Because oVirt is not yet able to update memory and cpushares on live guests like XenServer, my configurator needs to know the running config and the next_run config as well, and force directly the config on live guests (with virsh schedinfo --live arg ? ).
Unfortunately, the Host.getVMs().getById( "uuid" ) method returns only the running config so there's no way I can check if the future config is setup.
Any suggestion?
Version 3 of the SDK doesn't support GET parameters, unfortunately. If you are using version 4 of the engine then you may consider using version 4 of the SDK, which does support them: ---8<--- import static org.ovirt.engine.sdk4.ConnectionBuilder.connection; import org.ovirt.engine.sdk4.Connection; import org.ovirt.engine.sdk4.services.VmService; import org.ovirt.engine.sdk4.services.VmsService; import org.ovirt.engine.sdk4.types.Vm; // This example will connect to the server and start a virtual machine: public class GetVmNextRun { public static void main(String[] args) throws Exception { // Create the connection to the server: Connection connection = connection() .url("https://engine41.example.com/ovirt-engine/api") .user("admin@internal") .password("...") .trustStoreFile("truststore.jks") .build(); // Get the reference to the "vms" service: VmsService vmsService = connection.systemService().vmsService(); // Find the virtual machine (we need this in order to find // the identifier of the virtual machine given its // name): Vm vm = vmsService.list() .search("name=myvm") .send() .vms() .get(0); // Locate the service that manages the virtual machine: VmService vmService = vmsService.vmService(vm.id()); // Call the "get" method using the "next_run" parameter to // retrieve the configuration of the virtual machine that // will be used the next time it is started: vm = vmService.get() .nextRun(true) .send() .vm(); // Print some details of the virtual machine: System.out.printf("cpu shares: %s", vm.cpuShares()); // Close the connection to the server: connection.close(); } } --->8--- If this isn't an alternative for you, then please open a bug requesting that this support is added to version 3 of the SDK. -- Dirección Comercial: C/Jose Bardasano Baos, 9, Edif. Gorbea 3, planta 3ºD, 28016 Madrid, Spain Inscrita en el Reg. Mercantil de Madrid – C.I.F. B82657941 - Red Hat S.L.
This works fine with sdk4. Thanks. Unfortunately I couldn't find away to update cpu_shares config: can't set any update option to update it now or later and no error from the API. On Mon, Jul 11, 2016 at 1:07 PM, Juan Hernández <jhernand@redhat.com> wrote:
On 07/08/2016 04:09 PM, Sebastien Fuchs wrote:
Hi,
I'm developping (in JAVA) an automatic configuration manager to modify memory and cpu allocation (cpushares for the moment) updated on a calendar basis. It will also be used as a kind of enforcer/elastic scheduler on top of the ovirt policy scheduler.
Because oVirt is not yet able to update memory and cpushares on live guests like XenServer, my configurator needs to know the running config and the next_run config as well, and force directly the config on live guests (with virsh schedinfo --live arg ? ).
Unfortunately, the Host.getVMs().getById( "uuid" ) method returns only the running config so there's no way I can check if the future config is setup.
Any suggestion?
Version 3 of the SDK doesn't support GET parameters, unfortunately. If you are using version 4 of the engine then you may consider using version 4 of the SDK, which does support them:
---8<--- import static org.ovirt.engine.sdk4.ConnectionBuilder.connection;
import org.ovirt.engine.sdk4.Connection; import org.ovirt.engine.sdk4.services.VmService; import org.ovirt.engine.sdk4.services.VmsService; import org.ovirt.engine.sdk4.types.Vm;
// This example will connect to the server and start a virtual machine: public class GetVmNextRun { public static void main(String[] args) throws Exception { // Create the connection to the server: Connection connection = connection() .url("https://engine41.example.com/ovirt-engine/api") .user("admin@internal") .password("...") .trustStoreFile("truststore.jks") .build();
// Get the reference to the "vms" service: VmsService vmsService = connection.systemService().vmsService();
// Find the virtual machine (we need this in order to find // the identifier of the virtual machine given its // name): Vm vm = vmsService.list() .search("name=myvm") .send() .vms() .get(0);
// Locate the service that manages the virtual machine: VmService vmService = vmsService.vmService(vm.id());
// Call the "get" method using the "next_run" parameter to // retrieve the configuration of the virtual machine that // will be used the next time it is started: vm = vmService.get() .nextRun(true) .send() .vm();
// Print some details of the virtual machine: System.out.printf("cpu shares: %s", vm.cpuShares());
// Close the connection to the server: connection.close(); } } --->8---
If this isn't an alternative for you, then please open a bug requesting that this support is added to version 3 of the SDK.
-- Dirección Comercial: C/Jose Bardasano Baos, 9, Edif. Gorbea 3, planta 3ºD, 28016 Madrid, Spain Inscrita en el Reg. Mercantil de Madrid – C.I.F. B82657941 - Red Hat S.L.
On 07/12/2016 07:26 PM, Sebastien Fuchs wrote:
This works fine with sdk4. Thanks. Unfortunately I couldn't find away to update cpu_shares config: can't set any update option to update it now or later and no error from the API.
In order to perform the update using version 4 of the SDK you need to do something like this: import static org.ovirt.engine.sdk4.builders.Builders.vm; vmService.update() .vm( vm() .cpuShares(20) ) .send(); This sends the correct request to the server, but as you detected it doesn't have any effect. I believe that is a bug, opened the following BZ to track it: It isn't possible to change the CPU shares of virtual machine when it is up https://bugzilla.redhat.com/1355865
On Mon, Jul 11, 2016 at 1:07 PM, Juan Hernández <jhernand@redhat.com <mailto:jhernand@redhat.com>> wrote:
On 07/08/2016 04:09 PM, Sebastien Fuchs wrote: > Hi, > > I'm developping (in JAVA) an automatic configuration manager to modify > memory and cpu allocation (cpushares for the moment) updated on a > calendar basis. It will also be used as a kind of enforcer/elastic > scheduler on top of the ovirt policy scheduler. > > Because oVirt is not yet able to update memory and cpushares on live > guests like XenServer, my configurator needs to know the running config > and the next_run config as well, and force directly the config on live > guests (with virsh schedinfo --live arg ? ). > > Unfortunately, the Host.getVMs().getById( "uuid" ) method returns only > the running config so there's no way I can check if the future config is > setup. > > Any suggestion? >
Version 3 of the SDK doesn't support GET parameters, unfortunately. If you are using version 4 of the engine then you may consider using version 4 of the SDK, which does support them:
---8<--- import static org.ovirt.engine.sdk4.ConnectionBuilder.connection;
import org.ovirt.engine.sdk4.Connection; import org.ovirt.engine.sdk4.services.VmService; import org.ovirt.engine.sdk4.services.VmsService; import org.ovirt.engine.sdk4.types.Vm;
// This example will connect to the server and start a virtual machine: public class GetVmNextRun { public static void main(String[] args) throws Exception { // Create the connection to the server: Connection connection = connection() .url("https://engine41.example.com/ovirt-engine/api") .user("admin@internal") .password("...") .trustStoreFile("truststore.jks") .build();
// Get the reference to the "vms" service: VmsService vmsService = connection.systemService().vmsService();
// Find the virtual machine (we need this in order to find // the identifier of the virtual machine given its // name): Vm vm = vmsService.list() .search("name=myvm") .send() .vms() .get(0);
// Locate the service that manages the virtual machine: VmService vmService = vmsService.vmService(vm.id <http://vm.id>());
// Call the "get" method using the "next_run" parameter to // retrieve the configuration of the virtual machine that // will be used the next time it is started: vm = vmService.get() .nextRun(true) .send() .vm();
// Print some details of the virtual machine: System.out.printf("cpu shares: %s", vm.cpuShares());
// Close the connection to the server: connection.close(); } } --->8---
If this isn't an alternative for you, then please open a bug requesting that this support is added to version 3 of the SDK.
-- Dirección Comercial: C/Jose Bardasano Baos, 9, Edif. Gorbea 3, planta 3ºD, 28016 Madrid, Spain Inscrita en el Reg. Mercantil de Madrid – C.I.F. B82657941 - Red Hat S.L.
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-- Dirección Comercial: C/Jose Bardasano Baos, 9, Edif. Gorbea 3, planta 3ºD, 28016 Madrid, Spain Inscrita en el Reg. Mercantil de Madrid – C.I.F. B82657941 - Red Hat S.L.
participants (2)
-
Juan Hernández -
Sebastien Fuchs