Red Hat Bugzilla – Bug 1332446
"virsh domdisplay" recognizes 0.0.0.0 as localhost
Last modified: 2016-11-03 14:44:07 EDT
Description of problem: Set spice listen address to 0.0.0.0 # virsh domdisplay rhel7.2-1030 spice://localhost:5900 Version-Release number of selected component: libvirt-1.3.3-2.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. # virsh dumpxml rhel7.2-1030 <graphics type='spice' autoport='yes' listen='0.0.0.0'> <listen type='address' address='0.0.0.0'/> </graphics> 2. # virsh start rhel7.2-1030 3. # virsh dumpxml rhel7.2-1030 <graphics type='spice' port='5900' autoport='yes' listen='0.0.0.0'> <listen type='address' address='0.0.0.0'/> </graphics> 4. # virsh domdisplay rhel7.2-1030 spice://localhost:5900 5. # hostname hp-dl388g9-02.lab.eng.pek2.redhat.com Actual results: As step 4 Expected results: # virsh domdisplay rhel7.2-1030 spice://0.0.0.0:5900 or spice://hp-dl388g9-02.lab.eng.pek2.redhat.com:5900
(In reply to JinFangge from comment #0) > Description of problem: > Set spice listen address to 0.0.0.0 > # virsh domdisplay rhel7.2-1030 > spice://localhost:5900 This is correct as long as you are connecting to 'localhost' with virsh. (which is default) [...] > > 4. # virsh domdisplay rhel7.2-1030 The default libvirt approach is to connect to localhost, so > spice://localhost:5900 .. this is basically correct. If you use the URI from the same machine where you started 'virsh' it will work correctly. > > 5. # hostname > hp-dl388g9-02.lab.eng.pek2.redhat.com > > Actual results: > As step 4 > > Expected results: > # virsh domdisplay rhel7.2-1030 > spice://0.0.0.0:5900 This is definitely not an expected result. This would not work. > or > spice://hp-dl388g9-02.lab.eng.pek2.redhat.com:5900 This is wrong too. The hostname can be different from the uri that was used to connect and thus could not be reachable. There is still a problem with this code though. if you use virsh -c 'qemu+ssh://some.host/system' domdisplay... the output will be still spice://localhost:5900 due to a bug in the code.
Upstream commit: commit 4ddde38e2ddb2849582c3b05a97947f3b7c9b1ee Author: Pavel Hrdina <phrdina@redhat.com> Date: Mon May 30 16:35:17 2016 +0200 virsh: domdisplay: if listen is 0.0.0.0 or [::] print address from URI
Reproduce with libvirt-1.3.3-2.el7.x86_64. Test steps: 1. # virsh dumpxml rhel7.3 <graphics type='spice' autoport='yes' listen='0.0.0.0'> <listen type='address' address='0.0.0.0'/> </graphics> 2. # virsh start rhel7.3 3. # virsh dumpxml rhel7.3 <graphics type='spice' port='5900' autoport='yes' listen='0.0.0.0'> <listen type='address' address='0.0.0.0'/> </graphics> 4.#virsh -c qmeu:///system domdisplay rhel7.3 spice://localhost:5900 5.#hostname intel-e31225-16-3.englab.nay.redhat.com 6.#virsh -c qemu+ssh://intel-e31225-16-3.englab.nay.redhat.com/system domdisplay rhel7.3 spice://localhost:5900 7.#virsh -c qemu+ssh://10.66.144.29/system domdisplay rhel7.3 spice://localhost:5900 Verified pass with libvirt-2.0.0-2.el7.x86_64. Test steps: 1.# virsh dumpxml rhel7.3 ... <graphics type='spice' autoport='yes' listen='0::'> <listen type='address' address='0::'/> </graphics> ... 2. #virsh start rhel7.3 3. #virsh dumpxml rhel7.3 ... <graphics type='spice' port='5900' autoport='yes' listen='0::'> <listen type='address' address='0::'/> </graphics> ... 4.#virsh -c qmeu:///system domdisplay rhel7.3 spice://localhost:5900 5.#hostname intel-e31225-16-3.englab.nay.redhat.com 6.#virsh -c qemu+ssh://intel-e31225-16-3.englab.nay.redhat.com/system domdisplay rhel7.3 spice://intel-e31225-16-3.englab.nay.redhat.com:5900 7.#virsh -c qemu+ssh://10.66.144.29/system domdisplay rhel7.3 spice://10.66.144.29:5900 8.#virsh -c qemu+ssh://[2620:52:0:4292:a248:1cff:feaa:1594]/system domdisplay rhel7.3 spice://[2620:52:0:4292:a248:1cff:feaa:1594]:5900 9.Start a guest with spice listen type='network': #virsh dumpxml rhel7.3-2 ... <graphics type='spice' port='5900' autoport='yes' listen='10.0.1.1'> <listen type='network' address='10.0.1.1' network='br1'/> </graphics> ... 10.#virsh -c qemu+ssh://10.66.144.29/system domdisplay rhel7.3-2 spice://10.0.1.1:5900
I set graphic listen address to '0.0.0.0', and start guest. # netstat -tunap|grep 590 tcp 0 0 0.0.0.0:5900 0.0.0.0:* LISTEN 15390/qemu-kvm On another host, connect to libvirtd with ipv6 address in URI and get domain display, it returns domain display URI with ipv6 address: # virsh -c qemu+ssh://[2620:52:0:49c4:2e76:8aff:feb0:e0c4]/system domdisplay rhel7 vnc://[2620:52:0:49c4:2e76:8aff:feb0:e0c4]:0 But actually, guest is not listening on ipv6 address
Hi, this could be probably fixed. Please create a new BZ for the IPv6 issue.
I file a new bug for the issue in comment 6 Bug 1379649 - Virsh domdisplay returns IPv6 address while qemu is listening on IPv4
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHSA-2016-2577.html