• xmlrpc tuning parameters (MAX_CONN, MAX_CONN_BACKLOG, KEEPALIVE_TIMEOUT, KEEPALIVE_MAX_CONN and TIMEOUT) are only available with packages distributed by us as they are compiled with a newer xmlrpc-c library.

• for cloud bursting, a newer nokogiri gem than the on packed by current distros is required. If you are planning to use cloud bursting, you need to install nokogiri >= 1.4.4 prior to run install_gems

<xterm> # sudo gem install nokogiri -v 1.4.4 </xterm>

• to accomplish disk hotplugging and nic hotplugging (ignore the first bullet for the latter)
  • disks need to be attached through SCSI, so their images should have a DEV_PREFIX=“sd”
  • VM template that will permit SCSI disk attaches afterwards needs to have an explicitly defined SCSI controller:

<xterm> RAW=[TYPE = “vmware”,

   DATA = "<devices><controller type='scsi' index='0' model='lsilogic'/></devices>"]

</xterm>

• to use SCSI disk based VMs, it is usually a good idea to explicitly declare the PCI bridges. This can be accomplished with the following added to the VM template:

<xterm> FEATURES=[PCIBRIDGE=“1”] </xterm>

• to accomplish hot migration (through vMotion)
  • VM needs to have all network card model with model “E1000”

• to accomplish disk hotplugging:
  • disks need to be attached through SCSI, so their images should have a DEV_PREFIX=“sd”
  • VM template that will permit SCSI disk attaches afterwards needs to have an explicitly defined SCSI controller:

<xterm> RAW=[TYPE = “kvm”,

   DATA = "<devices><controller type='scsi' index='0' model='virtio-scsi'></controller></devices>"]

</xterm>

• due to libvirt version < = 0.10.2, there is a bug in libvrit/qemu attac/detach nic functionality that prevents the reuse of net IDs. This means that after a successful attach/detach NIC, a new attach will fail.

• due to libvirt version < = 0.10.2, there is a bug in libvrit/qemu attac/detach nic functionality that prevents the reuse of net IDs. This means that after a successful attach/detach NIC, a new attach will fail.

Because home directory of oneadmin is located in /var, it violates SELinux default policy. So in ssh passwordless configuration you should disable SELinux by setting SELINUX=disabled in /etc/selinux/config.

• The xen packages on Debian Lenny seem to be broken, and they don't work with the tap:aio interface. A workaround for this problem is the following:

<xterm> # ln -s /usr/lib/xen-3.2-1/bin/tapdisk /usr/sbin # echo xenblktap >> /etc/modules # reboot </xterm>

• Limited startup scripts → only for OpenNebula and Sunstone services

• Limited startup scripts → only for OpenNebula service
• Ubuntu12.04 presents libvirt 0.9.8. We recommend updating (manually, there are no packages) to 0.10.2 to use the AttachNic and DetachNic functionality.

• Limited startup scripts → only for OpenNebula service

OpenNebula is available at the Arch User Repository (AUR), please check the opennebula package page.

You need to compile the xmlrpc-c package with threads support, as:

  USE="threads" emerge xmlrpc-c