Windows slaves fail to start via DCOM

Solution for "hudson slave service on local computer started and then stopped"

Clear Event Log (control panel> administrator tools>event viewer)

Now start the service

Hi all,

I'm using Windows Server 2008 R2 Standard (Service Pack 1, 64-bit)  in our environment. Creation of windows slaves with "Let Hudson control this Windows slave as a Windows service" failed.

This is caused by the TrustedInstaller concept of windows.

Solution I found so far:

Hudson requires full access to WBEM Scripting Locator (HKEY_CLASSES_ROOT\CLSID{76A64158-CB41-11D1-8B02-00600806D9B6}). Default for administrators group is just read.
Change permissions for administrators group to "Full Control".

1. Launch 'regedit.exe' as 'Administrator'
2. Find the following registry key: 'HKEY_CLASSES_ROOT\CLSID{76A64158-CB41-11D1-8B02-00600806D9B6}'
3. Right click and select 'Permissions'
4. Change owner to administrators group.
5. Change permissions for administrators group. Grant Full Control.
6. Change owner back to TrustedInstaller (user is "NT Service\TrustedInstaller")
7. Restart Remote Registry Service

Florian, thanks for the tip. I'll add this the page

I am connecting a 64 bit Win 2008 slave server to Jenkins 1.421 and getting this error with JDK from Jenkins console when connecting the slave to it.

Checking if Java exists
ERROR: Failed to prepare Java
java.lang.reflect.UndeclaredThrowableException
at $Proxy48.start(Unknown Source)
at org.jvnet.hudson.remcom.WindowsRemoteProcessLauncher.launch(WindowsRemoteProcessLauncher.java:133)
at hudson.os.windows.ManagedWindowsServiceLauncher.launch(ManagedWindowsServiceLauncher.java:165)
at hudson.slaves.SlaveComputer$1.call(SlaveComputer.java:199)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor10535.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.kohsuke.jinterop.JInteropInvocationHandler.invoke(JInteropInvocationHandler.java:140)
... 9 more
Caused by: org.jinterop.dcom.common.JIException: Unknown Failure
at org.jvnet.hudson.wmi.Win32Service$Implementation.start(Win32Service.java:149)
... 13 more
Copying slave.jar
Starting the service

The JDK is installed in the 2008 server and the PATH is correctly set. Additionally I also added the javaw.exe to the PATH for safety. After all that config i get the above error

Any ideas ....BTW I have turned off any firewall blocking the slave box

Did anyone look at the problem I pasted above .....I would appreciate some replies/hints .....thanks

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After breaking the org.jvnet.hudson.remcom.WindowsRemoteProcess code apart (~line 114 or so) into a small test client. I discovered that the above stack-trace was being generated because the deployed RemComSVC.exe program on the slave machine was missing a Microsoft.VC90.CRT dependency. I simply installed the following package from microsoft (on the slave) and my XP slave started working (http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=5582).

Test Client Code:

import static java.util.logging.Level.FINE;

import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.UnknownHostException;

import jcifs.smb.NtlmPasswordAuthentication;
import jcifs.smb.SmbFile;

import org.jinterop.dcom.common.IJIAuthInfo;
import org.jinterop.dcom.common.JIDefaultAuthInfoImpl;
import org.jinterop.dcom.common.JIException;
import org.jinterop.dcom.core.JISession;
import org.jvnet.hudson.wmi.SWbemServices;
import org.jvnet.hudson.wmi.WMI;
import org.jvnet.hudson.wmi.Win32Service;
import static org.jvnet.hudson.wmi.Win32Service.Win32OwnProcess;

public class RemComClient {

private static IJIAuthInfo credential;

/**

• @param args
• @throws JIException
• @throws IOException
• @throws InterruptedException
  */
  public static void main(String[] args) throws JIException, IOException, InterruptedException {

credential = new JIDefaultAuthInfoImpl("WORKGROUP", "Administrator", "password");
String hostName = "192.168.0.5";
JISession session = JISession.createSession(credential);
session.setGlobalSocketTimeout(60000);
SWbemServices services = WMI.connect(session, hostName);

NtlmPasswordAuthentication smbAuth = createSmbAuth();

if (true) { // change to false if the server side is under the debugger launched from CLI.
Win32Service rsvc = services.getService("RemComSVC");
if (rsvc==null)

if (!rsvc.State().equals("Running"))

}
}

private static NtlmPasswordAuthentication createSmbAuth() throws IOException

private static void copyAndClose(InputStream in, OutputStream out) throws IOException {
try {
byte[] buf = new byte[4096];
while (true)

} finally

}

private static void close(Closeable c) {
try

catch (IOException e)

}

}

Well.... I thought it was working. Now the slave console is hanging after:
Checking if Java exists
java full version "1.6.0_25-b06"
Copying slave.jar
Starting the service

Verified that I can execute a remote "dir" command against the slave machine using the REMComSVC so the problem seems to be related to the slave.jar service. I get three system events when I attempt to start as in the last comment (using Admin Tools->Event Viewer) from the remote Jenkins Master.

All happen on same second:

The Remote Communication Service service was successfully sent a start control. User: Administrator
The Remote Communication Service service entered the running state. User: N/A
The Remote Communication Service service entered the stopped state. User: N/A

The configuration I have is a Ubuntu (Master) talking to a Windows XP (Slave).

I am using windows XP 64 bit machine for both master and slave m/c.
When I click on the 'launch slave agent' in the slave m/c I am getting exception.

Exception Stack Trace:

Connecting to buildserver
Checking if Java exists
ERROR: Failed to prepare Java
ha:AAAAWB+LCAAAAAAAAABb85aBtbiIQSmjNKU4P08vOT+vOD8nVc8DzHWtSE4tKMnMz/PLL0ldFVf2c+b/lb5MDAwVRQxSaBqcITRIIQMEMIIUFgAAckCEiWAAAAA=java.lang.reflect.UndeclaredThrowableException
at $Proxy97.start(Unknown Source)
at org.jvnet.hudson.remcom.WindowsRemoteProcessLauncher.launch(WindowsRemoteProcessLauncher.java:133)
at hudson.os.windows.ManagedWindowsServiceLauncher.launch(ManagedWindowsServiceLauncher.java:158)
at hudson.slaves.SlaveComputer$1.call(SlaveComputer.java:194)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.kohsuke.jinterop.JInteropInvocationHandler.invoke(JInteropInvocationHandler.java:140)
... 9 more
Caused by: org.jinterop.dcom.common.JIException: Unknown Failure
at org.jvnet.hudson.wmi.Win32Service$Implementation.start(Win32Service.java:149)
... 14 more
Copying slave.jar
Starting the service

Please help.

Thanks
Sankarsan