I am able to do a "virsh connect qemu+ssh:" command line and is able to get console.

While configuring if do not select "Use Native Java libvirt client" then, then during testing the connection I am getting the below error.
org.libvirt.LibvirtException: Cannot recv data: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password). : Connection reset by peer

At the same time the daemon prints no messages (/var/log/messages at host).

But if "Use Native Java libvirt client" is selected then, I could see messages like below at the host.

Sep 29 15:20:01 XXX systemd: Starting Session 12256 of user root.
Sep 29 15:20:01 XXX systemd: Started Session 12256 of user root.
Sep 29 15:20:01 XXX systemd: Failed to reset devices.list on /machine.slice: Invalid argument

But in Jenkins, I am getting the error "java.lang.reflect.UndeclaredThrowableException".
Sep 29, 2015 3:24:45 PM net.schmizz.sshj.transport.TransportImpl init
INFO: Client identity string: SSH-2.0-SSHJ_0_9_0
Sep 29, 2015 3:24:45 PM net.schmizz.sshj.transport.TransportImpl init
INFO: Server identity string: SSH-2.0-OpenSSH_6.6.1
Sep 29, 2015 3:24:46 PM net.schmizz.sshj.connection.channel.direct.SessionChannel exec
INFO: Will request to exec `netcat -U /var/run/libvirt/libvirt-sock`
Sep 29, 2015 3:24:46 PM com.nirima.libvirt.xdr.XDRInvocationHandler invoke
INFO: Invoking connectOpen
Sep 29, 2015 3:24:46 PM hudson.plugins.libvirt.Hypervisor$DescriptorImpl doTestConnection
WARNING: Failed to check hypervisor connection to 10.43.16.25 as root/******
hudson.plugins.libvirt.lib.VirtException: java.lang.reflect.UndeclaredThrowableException
at hudson.plugins.libvirt.lib.jlibvirt.JLibVirtConnectImpl.<init>(JLibVirtConnectImpl.java:27)
at hudson.plugins.libvirt.lib.ConnectionBuilder.build(ConnectionBuilder.java:87)
at hudson.plugins.libvirt.Hypervisor$DescriptorImpl.doTestConnection(Hypervisor.java:455)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:298)
at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:161)
at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:96)
at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:121)