This series adds ability for the qemu driver to tunnel connections to TCP
ports from the host. This is useful for enabling remote VNC/SPICE sessions
without the need to configure SSH tunnels or portforwards and without the
need to open the ports for public.
There's also an advantage for tools such as virt-viewer that have to guess the remote
connection parameters and you have to hope that nothing is in your way. With
spice/VNC clients that have support for read/write callbacks, this would allow also
direct connection without an intermediate socket.
The API and tunelling works but there's no (stable and good working) client for
this API. I hacked up a dirty netcat-like terminal into virsh for testing
purposes (see patch 5/5) but that isn't what I'd like to see.
The client should be able to open a listening socket and when a client connects
to it, it opens a stream and connects it to the remote host.
For the client there are two options:
1) do all the stuff in virsh: + one tool to rule them all
- i'd like to daemonize it and I don't know if that's okay in virsh
2) add a new tool "virtunnel": + less virsh pollution
- separate tool ...
As nobody responded, I'd like to re-ask for someones opinion on this.
(note: this is my personal effort, I'm annoyed of opening ssh tunnels to remote displays on my server
and I don't want to open the ports to public. )
After this it would be great to add support for this to virt-viewer. I will have a look at that later.
----
Diff to v1:
- fixed error reporting in 2/5
- documented limitation to "localhost" in 3/5
- fixed possible segfault in 4/5
---
Peter Krempa (5):
api: Add API to allow TCP tunneling through streams to the host
fdstream: Add support for TCP connections of streams
qemu: Add configuration options to enable TCP tunelling
qemu: Implement virNodeTunnelTcp for the qemu driver
NOT_TO_BE_APPLIED_UPSTREAM: quick and dirty virsh client to test the
stuff
include/libvirt/libvirt.h.in | 11 +++++++
src/driver.h | 8 +++++
src/fdstream.c | 73 ++++++++++++++++++++++++++++++++++++++++++++
src/fdstream.h | 5 +++
src/libvirt.c | 67 ++++++++++++++++++++++++++++++++++++++++
src/libvirt_private.syms | 1 +
src/libvirt_public.syms | 1 +
src/qemu/qemu.conf | 16 ++++++++++
src/qemu/qemu_conf.c | 26 ++++++++++++++++
src/qemu/qemu_conf.h | 13 ++++++++
src/qemu/qemu_driver.c | 48 +++++++++++++++++++++++++++++
src/remote/remote_driver.c | 1 +
src/remote/remote_protocol.x | 9 +++++-
src/remote_protocol-structs | 6 ++++
src/rpc/gendispatch.pl | 1 +
tools/console.c | 66 +++++++++++++++++++++------------------
tools/console.h | 9 ++----
tools/virsh-domain.c | 17 +++++++++--
tools/virsh-host.c | 60 ++++++++++++++++++++++++++++++++++++
19 files changed, 397 insertions(+), 41 deletions(-)
--
1.8.0
--
libvir-list mailing list
libvir-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/libvir-list