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hypervisor-libvirt
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hypervisor-libvirt
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#!/bin/bash
#
# lib/nova_plugins/hypervisor-libvirt
# Configure the libvirt hypervisor
# Enable with:
# VIRT_DRIVER=libvirt
# Dependencies:
# ``functions`` file
# ``nova`` configuration
# install_nova_hypervisor - install any external requirements
# configure_nova_hypervisor - make configuration changes, including those to other services
# start_nova_hypervisor - start any external services
# stop_nova_hypervisor - stop any external services
# cleanup_nova_hypervisor - remove transient data and cache
# Save trace setting
_XTRACE_NOVA_LIBVIRT=$(set +o | grep xtrace)
set +o xtrace
source $TOP_DIR/lib/nova_plugins/functions-libvirt
# Defaults
# --------
# Entry Points
# ------------
# clean_nova_hypervisor - Clean up an installation
function cleanup_nova_hypervisor {
# This function intentionally left blank
:
}
# configure_nova_hypervisor - Set config files, create data dirs, etc
function configure_nova_hypervisor {
configure_libvirt
iniset $NOVA_CONF libvirt virt_type "$LIBVIRT_TYPE"
iniset $NOVA_CONF libvirt cpu_mode "$LIBVIRT_CPU_MODE"
# Do not enable USB tablet input devices to avoid QEMU CPU overhead.
iniset $NOVA_CONF DEFAULT pointer_model "ps2mouse"
iniset $NOVA_CONF libvirt live_migration_uri "qemu+ssh://$STACK_USER@%s/system"
iniset $NOVA_CONF DEFAULT default_ephemeral_format "ext4"
iniset $NOVA_CONF DEFAULT compute_driver "libvirt.LibvirtDriver"
# Power architecture currently does not support graphical consoles.
if is_arch "ppc64"; then
iniset $NOVA_CONF vnc enabled "false"
fi
# arm64-specific configuration
if is_arch "aarch64"; then
# arm64 architecture currently does not support graphical consoles.
iniset $NOVA_CONF vnc enabled "false"
iniset $NOVA_CONF libvirt cpu_mode "host-passthrough"
fi
if isset ENABLE_FILE_INJECTION; then
if [ "$ENABLE_FILE_INJECTION" == "True" ]; then
# -1 means use libguestfs to inspect the guest OS image for the
# root partition to use for file injection.
iniset $NOVA_CONF libvirt inject_partition '-1'
fi
fi
if [[ "$LIBVIRT_TYPE" = "parallels" ]]; then
iniset $NOVA_CONF libvirt connection_uri "parallels+unix:///system"
iniset $NOVA_CONF libvirt images_type "ploop"
iniset $NOVA_CONF DEFAULT force_raw_images "False"
iniset $NOVA_CONF vnc server_proxyclient_address $HOST_IP
iniset $NOVA_CONF vnc server_listen $HOST_IP
iniset $NOVA_CONF vnc keymap
elif [[ "$NOVA_BACKEND" == "LVM" ]]; then
iniset $NOVA_CONF libvirt images_type "lvm"
iniset $NOVA_CONF libvirt images_volume_group $DEFAULT_VOLUME_GROUP_NAME
if isset LVM_VOLUME_CLEAR; then
iniset $NOVA_CONF libvirt volume_clear "$LVM_VOLUME_CLEAR"
fi
fi
}
# install_nova_hypervisor() - Install external components
function install_nova_hypervisor {
install_libvirt
# Install and configure **LXC** if specified. LXC is another approach to
# splitting a system into many smaller parts. LXC uses cgroups and chroot
# to simulate multiple systems.
if [[ "$LIBVIRT_TYPE" == "lxc" ]]; then
if is_ubuntu; then
if [[ "$DISTRO" > natty ]]; then
install_package cgroup-lite
fi
else
### FIXME(dtroyer): figure this out
echo "RPM-based cgroup not implemented yet"
yum_install libcgroup-tools
fi
fi
if [[ "$ENABLE_FILE_INJECTION" == "True" ]] ; then
if is_ubuntu; then
install_package python-guestfs
# NOTE(andreaf) Ubuntu kernel can only be read by root, which breaks libguestfs:
# https://bugs.launchpad.net/ubuntu/+source/linux/+bug/759725)
INSTALLED_KERNELS="$(ls /boot/vmlinuz-*)"
for kernel in $INSTALLED_KERNELS; do
STAT_OVERRIDE="root root 644 ${kernel}"
# unstack won't remove the statoverride, so make this idempotent
if [[ ! $(dpkg-statoverride --list | grep "$STAT_OVERRIDE") ]]; then
sudo dpkg-statoverride --add --update $STAT_OVERRIDE
fi
done
elif is_suse; then
# Workaround for missing dependencies in python-libguestfs
install_package python-libguestfs guestfs-data augeas augeas-lenses
elif is_fedora; then
install_package python-libguestfs
fi
fi
}
# start_nova_hypervisor - Start any required external services
function start_nova_hypervisor {
# This function intentionally left blank
:
}
# stop_nova_hypervisor - Stop any external services
function stop_nova_hypervisor {
# This function intentionally left blank
:
}
# Restore xtrace
$_XTRACE_NOVA_LIBVIRT
# Local variables:
# mode: shell-script
# End: