10:10 a.m.
Hi,
I am using java to connect to the xen, but my class is throwing a
exception. Does anyone know what is happening?
public class TestConnection {
public static void main(String[] args) {
Connect conn = null;
try {
conn = new Connect("xen+ssh://root@192.XXX.XXX.XX/", true);
libvir: RPC error : End of file while reading data: nc: invalid option --
'U'
nc -h for help: Input/output error
exception caught:org.libvirt.LibvirtException: End of file while reading
data: nc: invalid option -- 'U'
nc -h for help: Input/output error
level:VIR_ERR_ERROR
code:VIR_ERR_SYSTEM_ERROR
domain:VIR_FROM_RPC
hasConn:false
hasDom:false
hasNet:false
message:End of file while reading data: nc: invalid option -- 'U'
nc -h for help: Input/output error
str1:%s
str2:End of file while reading data: nc: invalid option -- 'U'
nc -h for help: Input/output error
str3:null
int1:-1
int2:-1
Thanks,
Felipe
--
*-- Felipe Oliveira Gutierrez*
*-- **lipe.82(a)gmail.com* <lipe.82(a)gmail.com>
*-- https://sites.google.com/site/lipe82/Home/diaadia*
10:27 a.m.
New subject: [libvirt-users] [libvirt] Connection using Java
On 10/02/2012 09:10 AM, Felipe Oliveira Gutierrez wrote:
Hi,
I am using java to connect to the xen, but my class is throwing a
exception. Does anyone know what is happening?
public class TestConnection {
public static void main(String[] args) {
Connect conn = null;
try {
conn = new Connect("xen+ssh://root@192.XXX.XXX.XX/", true);
libvir: RPC error : End of file while reading data: nc: invalid option --
'U'
What distro is running the machine at 192.XXX.XXX.XX, and what version
of nc is it using (remembering that Fedora and Debian nc come from
different heritages)? What does 'nc --help' output on that machine?
It may be possible to connect by installing an updated nc on that
machine, and/or altering your xen+ssh://... URI to include a ?netcat=...
parameter that points to an alternate location on that server that
understands -U.
http://libvirt.org/remote.html#Remote_URI_parameters
--
Eric Blake eblake(a)redhat.com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
10:57 a.m.
New subject: [libvirt-users] [libvirt] Connection using Java
Hi Eric, thanks for reply
My netcat version is v1.10-38 and I am using Debian on 192.XXX.XXX.XX
# nc -h
[v1.10-38]
connect to somewhere: nc [-options] hostname port[s] [ports] ...
listen for inbound: nc -l -p port [-options] [hostname] [port]
I use Ubuntu to access the Debian machine, and now my Java class is like
this:
public static void main(String[] args) {
Connect conn = null;
try {
conn = new
Connect("xen+ssh://root@192.168.XXX.XX/?netcat=/bin/netcat",
true);
but is still throwing the error:
libvir: RPC error : End of file while reading data: /bin/netcat: invalid
option -- 'U'
nc -h for help: Input/output error
exception caught:org.libvirt.LibvirtException: End of file while reading
data: /bin/netcat: invalid option -- 'U'
I have files on the client machine that are /usr/bin/ncat , /bin/netcat and
/etc/alternatives/netcat. I am not sure which I should use.
Thanks, Felipe
On Tue, Oct 2, 2012 at 12:27 PM, Eric Blake <eblake(a)redhat.com> wrote:
On 10/02/2012 09:10 AM, Felipe Oliveira Gutierrez wrote:
> Hi,
>
> I am using java to connect to the xen, but my class is throwing a
> exception. Does anyone know what is happening?
>
> public class TestConnection {
> public static void main(String[] args) {
> Connect conn = null;
> try {
> conn = new Connect("xen+ssh://root@192.XXX.XXX.XX/", true);
>
> libvir: RPC error : End of file while reading data: nc: invalid option --
> 'U'
What distro is running the machine at 192.XXX.XXX.XX, and what version
of nc is it using (remembering that Fedora and Debian nc come from
different heritages)? What does 'nc --help' output on that machine?
It may be possible to connect by installing an updated nc on that
machine, and/or altering your xen+ssh://... URI to include a ?netcat=...
parameter that points to an alternate location on that server that
understands -U.
http://libvirt.org/remote.html#Remote_URI_parameters
--
Eric Blake eblake(a)redhat.com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
--
*-- Felipe Oliveira Gutierrez*
*-- **lipe.82(a)gmail.com* <lipe.82(a)gmail.com>
*-- https://sites.google.com/site/lipe82/Home/diaadia*
11:04 a.m.
New subject: [libvirt-users] [libvirt] Connection using Java
[dropping libvir-list - this is not a development question. Also, please
don't top-post on technical lists]
On 10/02/2012 09:57 AM, Felipe Oliveira Gutierrez wrote:
Hi Eric, thanks for reply
My netcat version is v1.10-38 and I am using Debian on 192.XXX.XXX.XX
# nc -h
[v1.10-38]
connect to somewhere: nc [-options] hostname port[s] [ports] ...
listen for inbound: nc -l -p port [-options] [hostname] [port]
Lame - that didn't say which -options are supported.
exception caught:org.libvirt.LibvirtException: End of file while
reading
data: /bin/netcat: invalid option -- 'U'
I have files on the client machine that are /usr/bin/ncat , /bin/netcat and
/etc/alternatives/netcat. I am not sure which I should use.
I'm not much of a debian user myself, but you'll want to make sure that
whichever app you use is one that supports -U for connecting via a Unix
socket. You may want to ask more on debian lists on how to properly
configure your desired netcat.
--
Eric Blake eblake(a)redhat.com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
3:11 a.m.
New subject: [libvirt-users] [libvirt] Connection using Java
On 10/02/2012 07:04 PM, Eric Blake wrote:
...
I'm not much of a debian user myself, but you'll want to make sure that
whichever app you use is one that supports -U for connecting via a Unix
socket. You may want to ask more on debian lists on how to properly
configure your desired netcat.
Debian/Ubuntu have two alternative netcat packages: netcat-traditional
and netcat-openbsd. My bet is that libvirt will only work with one of
them, but I don't know which one. Just try them both and see for yourself.
Best,
Hristo
11:47 a.m.
New subject: [libvirt-users] [libvirt] Connection using Java
Thanks Hristo,
I removed the netcat from my Debian. After this the detcat-openbsd remais
there. I could type nc -h and now there is th eoption -U
Felipe
On Wed, Oct 3, 2012 at 5:11 AM, Hristo Deshev <hristo(a)deshev.com> wrote:
On 10/02/2012 07:04 PM, Eric Blake wrote:
> ...
> I'm not much of a debian user myself, but you'll want to make sure that
> whichever app you use is one that supports -U for connecting via a Unix
> socket. You may want to ask more on debian lists on how to properly
> configure your desired netcat.
Debian/Ubuntu have two alternative netcat packages: netcat-traditional
and netcat-openbsd. My bet is that libvirt will only work with one of
them, but I don't know which one. Just try them both and see for yourself.
Best,
Hristo
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--
*-- Felipe Oliveira Gutierrez*
*-- **lipe.82(a)gmail.com* <lipe.82(a)gmail.com>
*-- https://sites.google.com/site/lipe82/Home/diaadia*
2:06 a.m.
New subject: [libvirt-users] [libvirt] Connection using Java
Hi.
At Tue, 2 Oct 2012 12:57:03 -0300,
Felipe Oliveira Gutierrez wrote:
My netcat version is v1.10-38 and I am using Debian on 192.XXX.XXX.XX
# nc -h
[v1.10-38]
connect to somewhere: nc [-options] hostname port[s] [ports] ...
listen for inbound: nc -l -p port [-options] [hostname] [port]
I use Ubuntu to access the Debian machine, and now my Java class is like this:
public static void main(String[] args) {
Connect conn = null;
try {
conn = new
Connect("xen+ssh://root@192.168.XXX.XX/?netcat=/bin/netcat", true);
but is still throwing the error:
libvir: RPC error : End of file while reading data: /bin/netcat: invalid option --
'U'
nc -h for help: Input/output error
exception caught:org.libvirt.LibvirtException: End of file while reading data:
/bin/netcat: invalid option -- 'U'
I have files on the client machine that are /usr/bin/ncat , /bin/netcat and
/etc/alternatives/netcat. I am not sure which I should use.
These are actually all the same. Run "update-alternatives --display nc"
to show the current config and list alternative choices.
Installing the OpenBSD nc ("sudo apt-get install netcat-openbsd") on
your Debian machine should solve this. Just use nc.openbsd in your
connection string to make sure it is used.
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4420
days inactive
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days old
6 comments
4 participants
participants (4)
-
Claudio Bley -
Eric Blake -
Felipe Oliveira Gutierrez -
Hristo Deshev