SSH Plugins fails

[tall_male]

Despite the sshd is running, iy never shows available on one of my servers. Turning on the agent debug show:

2010-02-04 14:32:38,464 DEBUG [InventoryManager.availability-1] (rhq.core.pc.inventory.ResourceContainer$ResourceComponentInvocationHandler)- Call to [org.rhq.plugins.sshd.OpenSSHDComponent.getAvailability()] with args [] failed.
java.util.concurrent.ExecutionException: java.lang.NullPointerException
        at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
        at java.util.concurrent.FutureTask.get(Unknown Source)
        at org.rhq.core.pc.inventory.ResourceContainer$ResourceComponentInvocationHandler.invokeInNewThreadWithLock(ResourceContainer.java:446)
        at org.rhq.core.pc.inventory.ResourceContainer$ResourceComponentInvocationHandler.invoke(ResourceContainer.java:434)
        at $Proxy49.getAvailability(Unknown Source)
        at org.rhq.core.pc.inventory.AvailabilityExecutor.checkInventory(AvailabilityExecutor.java:167)
        at org.rhq.core.pc.inventory.AvailabilityExecutor.checkInventory(AvailabilityExecutor.java:209)
        at org.rhq.core.pc.inventory.AvailabilityExecutor.call(AvailabilityExecutor.java:106)
        at org.rhq.core.pc.inventory.AvailabilityExecutor.run(AvailabilityExecutor.java:70)
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
        at java.util.concurrent.FutureTask$Sync.innerRunAndReset(Unknown Source)
        at java.util.concurrent.FutureTask.runAndReset(Unknown Source)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(Unknown Source)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(Unknown Source)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
        at org.rhq.plugins.sshd.OpenSSHDComponent.getAvailability(OpenSSHDComponent.java:71)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.rhq.core.pc.inventory.ResourceContainer$ComponentInvocationThread.call(ResourceContainer.java:525)
        at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        ... 3 more
2010-02-04 14:32:38,470 DEBUG [InventoryManager.availability-1] (rhq.core.pc.inventory.AvailabilityExecutor)- Failed to collect availability on resource Resource[id=10718, type=SSHD, key=sshd, name=OpenSSH sshd, parent=vm60as042.test.ns.nl, version=1.0]
java.lang.NullPointerException
        at org.rhq.plugins.sshd.OpenSSHDComponent.getAvailability(OpenSSHDComponent.java:71)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.rhq.core.pc.inventory.ResourceContainer$ComponentInvocationThread.call(ResourceContainer.java:525)
        at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
2010-02-04 14:32:38,470 DEBUG [ResourceContainer.invoker.daemon-3] (Sigar)- [cpu] ncpu=1

Any sugestion what is causing problem?

[tall_male]

Forget abut this question. I rebooted the server; everything is OK now.