devstack/lib/nova_plugins/hypervisor-libvirt
Adam Gandelman 0f73ff2c51 Move libvirt install + setup to functions-libvirt
Moves installation and setup of libvirt to a common functions-libvirt,
which can be used by other drivers in the future that may require
cross-distro libvirt installation and config but are not using
VIRT_DRIVER=libvirt (ie, Ironic).

Change-Id: I4a9255c8b4bacd5acfde9b8061c9e537aeea592c
2014-03-13 15:03:55 -07:00

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# 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
MY_XTRACE=$(set +o | grep xtrace)
set +o xtrace
source $TOP_DIR/lib/nova_plugins/functions-libvirt
# Defaults
# --------
# File injection is disabled by default in Nova. This will turn it back on.
ENABLE_FILE_INJECTION=${ENABLE_FILE_INJECTION:-False}
# 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 $NOVA_CONF DEFAULT libvirt_type "$LIBVIRT_TYPE"
iniset $NOVA_CONF DEFAULT libvirt_cpu_mode "none"
iniset $NOVA_CONF DEFAULT use_usb_tablet "False"
iniset $NOVA_CONF DEFAULT default_ephemeral_format "ext4"
iniset $NOVA_CONF DEFAULT compute_driver "libvirt.LibvirtDriver"
LIBVIRT_FIREWALL_DRIVER=${LIBVIRT_FIREWALL_DRIVER:-"nova.virt.libvirt.firewall.IptablesFirewallDriver"}
iniset $NOVA_CONF DEFAULT firewall_driver "$LIBVIRT_FIREWALL_DRIVER"
# Power architecture currently does not support graphical consoles.
if is_arch "ppc64"; then
iniset $NOVA_CONF DEFAULT vnc_enabled "false"
fi
ENABLE_FILE_INJECTION=$(trueorfalse False $ENABLE_FILE_INJECTION)
if [[ "$ENABLE_FILE_INJECTION" = "True" ]] ; then
# When libguestfs is available for file injection, enable using
# libguestfs to inspect the image and figure out the proper
# partition to inject into.
iniset $NOVA_CONF libvirt inject_partition '-1'
iniset $NOVA_CONF libvirt inject_key 'true'
else
# File injection is being disabled by default in the near future -
# disable it here for now to avoid surprises later.
iniset $NOVA_CONF libvirt inject_partition '-2'
fi
}
# install_nova_hypervisor() - Install external components
function install_nova_hypervisor {
install_libvirt
# Install and configure **LXC** if specified. LXC is another approach to
# splitting a system into many smaller parts. LXC uses cgroups and chroot
# to simulate multiple systems.
if [[ "$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
}
# 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
$MY_XTRACE
# Local variables:
# mode: shell-script
# End: