Package: virt-viewer
Version: 0.5.3-1
Severity: important
virt-viewer does not connect to remote VM.
Upon connecting to a remote VM using virt-viewer with the arguments
qemu+ssh:///URI/system domain the user gets asked for the ssh login
credentials.
After then virt-viewer just exits.
I have seen a strong link to the netcat used.
virt-viewer does not work at all with netcat-traditional and when using netcat-
openbsd it still does not work.
Manually inspecting this issue reveals following:
xxxxxxx@cluster-node1 ~ $ ssh -l root xxxxxxxxx sh -c 'if 'nc' -q 2>&1 | grep
"requires an argument" >/dev/null 2>&1; then ARG=-q0;else ARG=;fi;'nc' $ARG -U
/var/run/libvirt/libvirt-sock-ro'
Enter passphrase for key '/home/xxxxxxxxx/.ssh/id_rsa':
bash: -c: line 0: syntax error near unexpected token `then'
bash: -c: line 0: `sh -c if nc -q 2>&1 | grep "requires an argument" >/dev/null
2>&1; then ARG=-q0;else ARG=;fi;nc $ARG -U /var/run/libvirt/libvirt-sock-ro'
Using dpkg-reconfigure dash to set /bin/sh to /bin/bash does not have any
effect.
Issuing the commands supplied to ssh by the virt-viewer manually on the server
console reveals following:
Using netcat-traditional:
root@server1 ~ # if 'nc' -q 2>&1 | grep "requires an argument" >/dev/null 2>&1;
then ARG=-q0;else ARG=;fi;'nc' $ARG -U /var/run/libvirt/libvirt-sock-ro
nc: invalid option -- 'U'
nc -h for help
Using netcat-openbsd:
root@server1 ~ # if 'nc' -q 2>&1 | grep "requires an argument" >/dev/null 2>&1;
then ARG=-q0;else ARG=;fi;'nc' $ARG -U /var/run/libvirt/libvirt-sock-ro
Seems to work. But as written above it does not work when supplying this via
"ssh sh -c".
netcat6:
root@server1 ~ # if 'nc' -q 2>&1 | grep "requires an argument" >/dev/null 2>&1;
then ARG=-q0;else ARG=;fi;'nc' $ARG -U /var/run/libvirt/libvirt-sock-ro
nc: invalid option -- 'U'
Usage:
nc [options...] hostname port
nc -l -p port [-s addr] [options...] [hostname] [port]
Recognized options are:
-4 Use only IPv4
-6 Use only IPv6
-b, --bluetooth Use Bluetooth (defaults to L2CAP protocol)
--buffer-size=BYTES Set buffer size
--continuous Continuously accept connections
(only in listen mode with --exec)
--disable-nagle Disable nagle algorithm for TCP connections
-e, --exec=CMD Exec command after connect
--half-close Handle network half-closes correctly
-h, --help Display help
-l, --listen Listen mode, for inbound connects
--mtu=BYTES Set MTU for network connection transmits
-n Numeric-only IP addresses, no DNS
--no-reuseaddr Disable SO_REUSEADDR socket option
(only in listen mode)
--nru=BYTES Set NRU for network connection receives
-p, --port=PORT Local port
-q, --hold-timeout=SEC1[:SEC2]
Set hold timeout(s) for local [and remote]
--rcvbuf-size Kernel receive buffer size for network sockets
--recv-only Only receive data, don't transmit
-s, --address=ADDRESS Local source address
--sco Use SCO over Bluetooth
--send-only Only transmit data, don't receive
--sndbuf-size Kernel send buffer size for network sockets
-t, --idle-timeout=SECONDS
Idle connection timeout
-u, --udp Require use of UDP
-v Increase program verbosity
(call twice for max verbosity)
--version Display nc6 version information
-w, --timeout=SECONDS Timeout for connects/accepts
-x, --transfer File transfer mode
-X, --rev-transfer File transfer mode (reverse direction)
-T, --ttl=TTL TTL of outgoing IP packet
-z Don't send any data (scan mode)
What is wrong?
At least it should be fixable by recompling from virt-viewer source if the
issue is solved.
-- System Information:
Debian Release: 7.0
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 3.7.2 (SMP w/2 CPU cores; PREEMPT)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages virt-viewer depends on:
ii libc6 2.13-38
ii libgdk-pixbuf2.0-0 2.26.1-1
ii libglib2.0-0 2.33.12+really2.32.4-5
ii libgtk-3-0 3.4.2-6
ii libgtk-vnc-2.0-0 0.5.0-3.1
ii libvirt0 0.9.12-11
ii libxml2 2.8.0+dfsg1-7+nmu1
virt-viewer recommends no packages.
Versions of packages virt-viewer suggests:
ii netcat-openbsd [netcat] 1.105-7
--
To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
