[Bug 1304008] Re: user not added to libvirtd group with iso trusty 'virtual machine host' installation method

[Serge Hallyn]

Untested proposed debdiff against user-setup to solve this bug for
libvirt.

** Patch added: "user-setup-libvirt.debdiff"
   https://bugs.launchpad.net/ubuntu/+source/user-setup/+bug/1304008/+attachment/4073646/+files/user-setup-libvirt.debdiff

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https://bugs.launchpad.net/bugs/1304008

Title:
  user not added to libvirtd group with iso trusty 'virtual machine
  host' installation method

Status in “libvirt” package in Ubuntu:
  Triaged
Status in “user-setup” package in Ubuntu:
  New

Bug description:
  user not added to libvirtd group with iso trusty 'virtual machine
  host' installation method

  ##### Scenario #####
  * User installs Trusty server from ISO (daily build 20140407 in this case).
  * User selects Virtual Machine Host from the software selection menu, otherwise, installation defaults are kept.
  * After installation completes, user execs:  apt-get install virt-manager
  * User reboots the box and/or logs off and logs back in
  * User can't connect to libvirtd with virt-manager because of group membership.
  * Take note that this issues does not appear to surface when installing libvirt, KVM, et al, via apt-get.  It appears to affect the ISO 'Virtual Machine Host' installation method only.
  * I've also confirmed that the apt-get installation method does indeed add the user to the libvirtd group on the same base ISO release.
  .

  ----- Error Detail -----
  virt-manager 'unable to connect to libvirt.'
  Verify that:
   - The 'libvirt-bin' package is installed
   - The 'libvirtd' daemon has been started
   - You are a member of the libvirtd group
   
  line 105, in openAuth
      if ret is None:raise libvirtError('virConnectOpenAuth() failed')
  libvirtError: Failed to connect socket to '/var/run/libvirt/libvirt-sock': Permission denied

  rbeisner at 130-5:~$ groups
  rbeisner adm cdrom sudo dip plugdev lpadmin sambashare
  * Take note, no libvirtd membership.

  rbeisner at 130-5:~$ uname -a
  Linux 130-5 3.13.0-23-generic #45-Ubuntu SMP Fri Apr 4 06:58:38 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

  rbeisner at 130-5:~$ dpkg -l | egrep 'libvirt|virt-manager'
  ii  libvirt-bin                         1.2.2-0ubuntu10                     amd64        programs for the libvirt library
  ii  libvirt0                            1.2.2-0ubuntu10                     amd64        library for interfacing with different virtualization systems
  ii  python-libvirt                      1.2.2-0ubuntu1                      amd64        libvirt Python bindings
  ii  virt-manager                        0.9.5-1ubuntu3                      all          desktop application for managing virtual machines
  .

  ##### Workaround #####
  $ sudo usermod -a -G libvirtd yourusername
  $ groups
  yourusername adm cdrom sudo dip plugdev libvirtd lpadmin sambashare

  * Log out, log in, launch virt-manager, it connects to libvirtd successfully.
  .

  ##### Expected Results #####
  * Users who are members of the sudo group should also be members of the libvirtd group, and should be able to manage libvirt using virt-manager.  In an older build of Trusty daily ISO, it did behave as expected, as shown below:

  rbeisner at bcu:~$ groups
  rbeisner adm cdrom sudo dip plugdev lpadmin libvirtd sambashare

  rbeisner at bcu:~$ uname -a
  Linux bcu 3.13.0-22-generic #44-Ubuntu SMP Wed Apr 2 20:05:40 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
  rbeisner at bcu:~$ lsb_release -a
  No LSB modules are available.
  Distributor ID: Ubuntu
  Description:    Ubuntu Trusty Tahr (development branch)
  Release:        14.04
  Codename:       trusty

  rbeisner at bcu:~$ dpkg -l | egrep 'libvirt|virt-manager'
  ii  libvirt-bin                               1.2.2-0ubuntu10                        amd64        programs for the libvirt library
  ii  libvirt0                                  1.2.2-0ubuntu10                        amd64        library for interfacing with different virtualization systems
  ii  python-libvirt                            1.2.2-0ubuntu1                         amd64        libvirt Python bindings
  ii  virt-manager                              0.9.5-1ubuntu3                         all          desktop application for managing virtual machines

  * virt-manager gui can connect to libvirtd without adjusting group
  membership.

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