[Engine-devel] Time for Spring?
by Libor Spevak
Hi,
it is rather cold in Europe, but can I ask, what's the current opinion
or plans about "full" integration of Spring Framework into oVirt engine
(Backend)?
This is a commonly accepted integration framework among Java programmers
and industry standard, which
solves many pains from small to large projects. And can lead to a better
understanding of the program.
There are several Spring dependencies inside oVirt project, but mostly
for LDAP and database communication (JDBC template).
Still missing (sorry, looks like marketing, but..):
- dependency injection
- aspect-oriented programming (AOP)
- enterprise integration patterns
Is something true? :-)
1. We tried, but it is too large and overcomplicated, it can be solved
better way for the project purpose
2. We tried, but we think, we need just e.g. JDBC, LDAP layer covered now
3. We would like to integrate with e.g. Hibernate soon, EJB, remoting,
unit tests, integration tests, ... , probably we will need it soon
4. We understand and need dependency injection, but there are other
light DI containers (Pico, Guice, JBoss Seam).
etc.
Still, I think there is strong potential, probably not clear today. We
cannot avoid Guice on frontend side because of GWTP, but the backend
lacks something.
Or not?
Thanks.
Regards,
Libor
12 years
[Engine-devel] Open Attestation integration with oVirt engine proposal, how to improve engine's performance?
by Chen, Wei D
Open Attestation is a project aim to enable basic open sourced SDK with Intel TXT technology to get node's trustworthiness in a cloud usage environment. Integration Open Attestation with Ovirt will definitely provide a more secure cloud ecosystem which will give end user a choice of whether guest virtual machine need launch on a trusted host server or not.
Initially, we want to attest the host's trustworthiness every time when every guest virtual machine launch on the host, thanks to Doron Fediuck's reminding, we just need attest the host at the first request and cache the result for subsequent requests is enough, further, we want to bring down server's response time in case of large concurrence request. To resolve/improve engine's performance, we decide to tackle this issue by caching all of node's trustworthiness while the first guest virtual machine's launching, this will take a little longer before its running. Node's trustworthiness would be stored in database or just in system memory, the value will be effective within one hour or so, of course, the period of validity could be configured, node's status need to be updated in the case of end user reboot the virtual machine and the duration exceed valid time.
Does this acceptable and any good suggestion?
Some details can be found in this link: http://wiki.ovirt.org/Trusted_compute_pools
Best Regards,
Dave Chen
12 years
[Engine-devel] Trusted Compute Pools
by Wei, Gang
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charset="US-ASCII"
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Hi,
I am an engineer working in Intel Open Source Technology Center, interested
in integrating Intel initiated OpenAttestation(OAT) project
(https://github.com/OpenAttestation/OpenAttestation.git) into oVirt to
provide a way for Administrator to deploy VMs on trusted hosts hardened with
H/W-based security features, such as Intel TXT.
I made a draft feature page for this:
http://wiki.ovirt.org/wiki/Trusted_compute_pools
My draft idea is to provide trust_level requirement while doing vm creation
like below:
curl -v -u "vdcadmin(a)qa.lab.tlv.redhat.com"
-H "Content-type: application/xml"
-d '<vm><name>my_new_vm</name>
<cluster id="99408929-82cf-4dc7-a532-9d998063fa95" />
<template id="00000000-0000-0000-0000-000000000000"/>
<trust_level>trusted</trust_level></vm>'
'http://10.35.1.1/rhevm-api/vms'
Then oVirt Engine should query attestation server built with OAT via RESTful
API to get all trusted hosts and select one to create the VM.
Attestation server performs host verification through following steps:
1. Hosts boot with Intel TXT technology enabled
2. The hosts' BIOS, hypervisor and OS are measured
3. These measured data is sent to Attestation server when challenged by
attestation server
4. Attestation server verifies those measurements against good/known
database to determine hosts' trustworthiness
Hosts need to be installed with OAT host agent to report host integrity to
attestation server.
By far, I am still in process of getting familiar with oVirt code and not
get solid idea yet on how the oVirt Engine should be modified to support
this feature.
Any kind of comments or suggestions will be highly appreciated.
Thanks
Gang (Jimmy) Wei
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------=_NextPart_000_0388_01CDC762.DCFD1B70--
12 years
[Engine-devel] Instance Types Feature
by Tomas Jelinek
Hi All,
this is the proposed new feature called instance types:
http://www.ovirt.org/Features/Instance_Types
Long story short - it should basically split the VM template into:
- "hardware profile" called instance types
- "software profile" called image
This should enable to do something like: Create a new "small" VM and attach a disk with "RHEL + Postgres" installed.
Any comments are more than welcome!
Tomas
12 years
[Engine-devel] Java process increasing resident memory
by navin p
Hi,
I wrote this sample code and the resident memory of the process is
increasing gradually over time. What could be the reason ? I don't see any
obvious leaks in my program. Could it be that the API is not
freeing/deleting memory ?
Regards,
Navin
package ovcollector;
import java.util.*;
import java.io.*;
import java.lang.management.ManagementFactory;
import org.apache.http.client.*;
import org.apache.http.params.*;
import org.ovirt.engine.sdk.Api;
import org.apache.http.pool.*;
import org.ovirt.engine.sdk.decorators.Host;
import org.ovirt.engine.sdk.decorators.HostStatistic;
import org.ovirt.engine.sdk.decorators.StorageDomain;
import org.ovirt.engine.sdk.decorators.VM;
import org.ovirt.engine.sdk.decorators.VMDisk;
import org.ovirt.engine.sdk.decorators.VMDiskStatistic;
import org.ovirt.engine.sdk.decorators.VMStatistic;
import org.ovirt.engine.sdk.decorators.VMs;
import org.ovirt.engine.sdk.entities.CPU;
import org.ovirt.engine.sdk.entities.Value;
import org.ovirt.engine.sdk.exceptions.ServerException;
import org.ovirt.engine.sdk.exceptions.UnsecuredConnectionAttemptError;
import org.ovirt.engine.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class collectHosts extends JPanel {
/**
* @param args
*/
public static String[] columnNames = {"Host Name",
"Host uuid",
"Cpu Cores", "Cpu Sockets",
"Memory.total",
"Memory.used",
"Memory.free",
"Memory.shared","Memory.buffers","Memory.cached","swap.total","swap.free","swap.used","swap.cached","ksm.cpu.current",
"cpu.current.user","cpu.current.system","cpu.current.idle","cpu.load.avg.5m"
};
public static Object[][] data =
{
{"blankvmname", "blankuuid", new Double(0),new Double(0),new Double(0),new
Double(0),new Double(0),new Double(0),new Double(0), new Double(0),
new Double(0),new Double(0),new Double(0),new Double(0),new Double(0),new
Double(0),new Double(0),new Double(0),new Double(0)},
{"blankvmname", "blankuuid", new Double(0),new Double(0),new Double(0),new
Double(0),new Double(0),new Double(0),new Double(0), new Double(0),
new Double(0),new Double(0),new Double(0),new Double(0),new Double(0),new
Double(0),new Double(0),new Double(0),new Double(0)}
};
public collectHosts() {
super(new GridLayout(1,0));
final JTable table = new JTable(data, columnNames);
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
table.setFillsViewportHeight(true);
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Add the scroll pane to this panel.
add(scrollPane);
}
/**
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
*/
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("Hosts");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
collectHosts newContentPane = new collectHosts();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.pack();
frame.setVisible(true);
}
private static final String URL = "http://somehost:80/api";
public static void main(String[] args) throws
ClientProtocolException,ServerException,
UnsecuredConnectionAttemptError,IOException {
// TODO Auto-generated method stub
System.out.println("Hosts");
while (true)
{
Api api = new Api(URL,"SOMEUSERNAME","SOMEPASSWORD");
System.out.println(ManagementFactory.getRuntimeMXBean().getName()) ;
List<Host> hlist = api.getHosts().list();
Integer i=0,j=0;
for(Host obj: hlist)
{
j=0;
System.out.println(obj.getName()+ ":" + obj.getId() +":"+
obj.getMemory()+":" + obj.getCpu().getTopology().getCores() +":"+
obj.getCpu().getTopology().getSockets());
data[i][j++]=obj.getName();
data[i][j++]=obj.getId();
data[i][j++]=obj.getCpu().getTopology().getCores();
data[i][j++]=obj.getCpu().getTopology().getSockets();
List<HostStatistic> lhs=obj.getStatistics().list();
for(HostStatistic obj1: lhs)
{
System.out.println(obj1.getName());
List<Value> vll=obj1.getValues().getValues();
for(Value vl:vll)
{
System.out.println(vl.getDatum());
data[i][j++]=vl.getDatum();
}
}
i++;
}
try {
Thread.sleep(10000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/*
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
List<StorageDomain> list_SD=api.getStorageDomains().list();
Integer i=0;
for(StorageDomain obj: list_SD)
{
System.out.println(obj.getName()+ " | " + obj.getUsed() + " | " +
obj.getAvailable() + " | " + obj.getType());
}
*/
}
}
12 years, 1 month
[Engine-devel] oVirt 3.2 test-day
by Moran Goldboim
we were supposed to have test day tomorrow, but we decided to push it to
Thursday (Jan 31) to have ovirt-node and proper infra for test day (Mike
should announce it's officially soon).
I have refreshed http://www.ovirt.org/Testing/OvirtTestDay, but there is
action from your part as well:
-go over the scenarios (regressions), see if those relevant, add more if
needed remove if not.
-add basic tests for your new 3.2 features.
-assign a contributor to be actively present on helping users on his area
-make commitment and participate the test day
I would like to review this document by Wednesday on users meeting,
please make sure your part is updated by than.
Thanks,
Moran.
12 years, 1 month
[Engine-devel] jpa annotations
by Laszlo Hornyak
Hi,
We have JPA annotations on the backend entity beans, but they have never been actually used as far as I know and now that I looked into VmTemplate for example we do not even have a vm_template table anymore, while VmTemplate still refers to it.
Any plans with the JPA?
Laszlo
12 years, 1 month
