openstack/devstack
Code Issues Proposed changes

Make dependency on libvirt dynamic

Browse Source 
Fixes bug 1184960

Change-Id: If702807d9ae326bf216a2e076ce61062045d7c6b
This commit is contained in:
Bob Ball 2013-05-30 16:47:19 +01:00
parent 7e37b7314d
commit b1e49bfdf7
4 changed files with 110 additions and 96 deletions
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6
files/apts/nova
View File

@ -12,8 +12,8 @@ iptables
ebtables
sqlite3
sudo
kvm
qemu # dist:wheezy,jessie
kvm # NOPRIME
qemu # dist:wheezy,jessie NOPRIME
libvirt-bin # NOPRIME
libjs-jquery-tablesorter # Needed for coverage html reports
vlan
@ -27,7 +27,7 @@ python-paste
python-migrate
python-gflags
python-greenlet
python-libvirt
python-libvirt # NOPRIME
python-libxml2
python-routes
python-netaddr

6
files/rpms-suse/nova
View File

@ -7,11 +7,11 @@ genisoimage # required for config_drive
iptables
iputils
kpartx
kvm
kvm # NOPRIME
# qemu as fallback if kvm cannot be used
qemu
qemu # NOPRIME
libvirt # NOPRIME
libvirt-python
libvirt-python # NOPRIME
libxml2-python
mysql-community-server # NOPRIME
parted

4
files/rpms/nova
View File

@ -7,9 +7,9 @@ genisoimage # required for config_drive
iptables
iputils
kpartx
kvm
kvm # NOPRIME
libvirt-bin # NOPRIME
libvirt-python
libvirt-python # NOPRIME
libxml2-python
numpy # needed by websockify for spice console
m2crypto

190
lib/nova
View File

@ -237,37 +237,39 @@ function configure_nova() {
# Force IP forwarding on, just on case
sudo sysctl -w net.ipv4.ip_forward=1
# Attempt to load modules: network block device - used to manage qcow images
sudo modprobe nbd || true
if [[ "$VIRT_DRIVER" = 'libvirt' ]]; then
# Attempt to load modules: network block device - used to manage qcow images
sudo modprobe nbd || true
# Check for kvm (hardware based virtualization). If unable to initialize
# kvm, we drop back to the slower emulation mode (qemu). Note: many systems
# come with hardware virtualization disabled in BIOS.
if [[ "$LIBVIRT_TYPE" == "kvm" ]]; then
sudo modprobe kvm || true
if [ ! -e /dev/kvm ]; then
echo "WARNING: Switching to QEMU"
LIBVIRT_TYPE=qemu
if which selinuxenabled 2>&1 > /dev/null && selinuxenabled; then
# https://bugzilla.redhat.com/show_bug.cgi?id=753589
sudo setsebool virt_use_execmem on
# Check for kvm (hardware based virtualization). If unable to initialize
# kvm, we drop back to the slower emulation mode (qemu). Note: many systems
# come with hardware virtualization disabled in BIOS.
if [[ "$LIBVIRT_TYPE" == "kvm" ]]; then
sudo modprobe kvm || true
if [ ! -e /dev/kvm ]; then
echo "WARNING: Switching to QEMU"
LIBVIRT_TYPE=qemu
if which selinuxenabled 2>&1 > /dev/null && selinuxenabled; then
# https://bugzilla.redhat.com/show_bug.cgi?id=753589
sudo setsebool virt_use_execmem on
fi
fi
fi
fi
# Install and configure **LXC** if specified. LXC is another approach to
# splitting a system into many smaller parts. LXC uses cgroups and chroot
# to simulate multiple systems.
if [[ "$LIBVIRT_TYPE" == "lxc" ]]; then
if is_ubuntu; then
if [[ ! "$DISTRO" > natty ]]; then
cgline="none /cgroup cgroup cpuacct,memory,devices,cpu,freezer,blkio 0 0"
sudo mkdir -p /cgroup
if ! grep -q cgroup /etc/fstab; then
echo "$cgline" | sudo tee -a /etc/fstab
fi
if ! mount -n | grep -q cgroup; then
sudo mount /cgroup
# 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
cgline="none /cgroup cgroup cpuacct,memory,devices,cpu,freezer,blkio 0 0"
sudo mkdir -p /cgroup
if ! grep -q cgroup /etc/fstab; then
echo "$cgline" | sudo tee -a /etc/fstab
fi
if ! mount -n | grep -q cgroup; then
sudo mount /cgroup
fi
fi
fi
fi
@ -278,9 +280,10 @@ function configure_nova() {
configure_baremetal_nova_dirs
fi
if is_service_enabled quantum && is_quantum_ovs_base_plugin && ! sudo grep -q '^cgroup_device_acl' $QEMU_CONF; then
# Add /dev/net/tun to cgroup_device_acls, needed for type=ethernet interfaces
cat <<EOF | sudo tee -a $QEMU_CONF
if [[ "$VIRT_DRIVER" = 'libvirt' ]]; then
if is_service_enabled quantum && is_quantum_ovs_base_plugin && ! sudo grep -q '^cgroup_device_acl' $QEMU_CONF; then
# Add /dev/net/tun to cgroup_device_acls, needed for type=ethernet interfaces
cat <<EOF | sudo tee -a $QEMU_CONF
cgroup_device_acl = [
"/dev/null", "/dev/full", "/dev/zero",
"/dev/random", "/dev/urandom",
@ -288,19 +291,17 @@ cgroup_device_acl = [
"/dev/rtc", "/dev/hpet","/dev/net/tun",
]
EOF
fi
fi
if is_ubuntu; then
LIBVIRT_DAEMON=libvirt-bin
else
LIBVIRT_DAEMON=libvirtd
fi
if is_ubuntu; then
LIBVIRT_DAEMON=libvirt-bin
else
LIBVIRT_DAEMON=libvirtd
fi
if is_fedora || is_suse; then
if is_fedora && [[ $DISTRO =~ (rhel6) || "$os_RELEASE" -le "17" ]]; then
sudo bash -c "cat <<EOF >/etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla
if is_fedora || is_suse; then
if is_fedora && [[ $DISTRO =~ (rhel6) || "$os_RELEASE" -le "17" ]]; then
sudo bash -c "cat <<EOF >/etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla
[libvirt Management Access]
Identity=unix-group:$LIBVIRT_GROUP
Action=org.libvirt.unix.manage
@ -308,11 +309,11 @@ ResultAny=yes
ResultInactive=yes
ResultActive=yes
EOF"
elif is_suse && [[ $os_RELEASE = 12.2 || "$os_VENDOR" = "SUSE LINUX" ]]; then
# openSUSE < 12.3 or SLE
# Work around the fact that polkit-default-privs overrules pklas
# with 'unix-group:$group'.
sudo bash -c "cat <<EOF >/etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla
elif is_suse && [[ $os_RELEASE = 12.2 || "$os_VENDOR" = "SUSE LINUX" ]]; then
# openSUSE < 12.3 or SLE
# Work around the fact that polkit-default-privs overrules pklas
# with 'unix-group:$group'.
sudo bash -c "cat <<EOF >/etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla
[libvirt Management Access]
Identity=unix-user:$USER
Action=org.libvirt.unix.manage
@ -320,13 +321,13 @@ ResultAny=yes
ResultInactive=yes
ResultActive=yes
EOF"
else
# Starting with fedora 18 and opensuse-12.3 enable stack-user to
# virsh -c qemu:///system by creating a policy-kit rule for
# stack-user using the new Javascript syntax
rules_dir=/etc/polkit-1/rules.d
sudo mkdir -p $rules_dir
sudo bash -c "cat <<EOF > $rules_dir/50-libvirt-$STACK_USER.rules
else
# Starting with fedora 18 and opensuse-12.3 enable stack-user to
# virsh -c qemu:///system by creating a policy-kit rule for
# stack-user using the new Javascript syntax
rules_dir=/etc/polkit-1/rules.d
sudo mkdir -p $rules_dir
sudo bash -c "cat <<EOF > $rules_dir/50-libvirt-$STACK_USER.rules
polkit.addRule(function(action, subject) {
if (action.id == 'org.libvirt.unix.manage' &&
subject.user == '"$STACK_USER"') {
@ -334,21 +335,22 @@ polkit.addRule(function(action, subject) {
}
});
EOF"
unset rules_dir
unset rules_dir
fi
fi
fi
# The user that nova runs as needs to be member of **libvirtd** group otherwise
# nova-compute will be unable to use libvirt.
if ! getent group $LIBVIRT_GROUP >/dev/null; then
sudo groupadd $LIBVIRT_GROUP
fi
add_user_to_group $STACK_USER $LIBVIRT_GROUP
# The user that nova runs as needs to be member of **libvirtd** group otherwise
# nova-compute will be unable to use libvirt.
if ! getent group $LIBVIRT_GROUP >/dev/null; then
sudo groupadd $LIBVIRT_GROUP
fi
add_user_to_group $STACK_USER $LIBVIRT_GROUP
# libvirt detects various settings on startup, as we potentially changed
# the system configuration (modules, filesystems), we need to restart
# libvirt to detect those changes.
restart_service $LIBVIRT_DAEMON
# libvirt detects various settings on startup, as we potentially changed
# the system configuration (modules, filesystems), we need to restart
# libvirt to detect those changes.
restart_service $LIBVIRT_DAEMON
fi
# Instance Storage
@ -436,8 +438,10 @@ function create_nova_conf() {
if is_baremetal; then
iniset $NOVA_CONF baremetal sql_connection `database_connection_url nova_bm`
fi
iniset $NOVA_CONF DEFAULT libvirt_type "$LIBVIRT_TYPE"
iniset $NOVA_CONF DEFAULT libvirt_cpu_mode "none"
if [[ "$VIRT_DRIVER" = 'libvirt' ]]; then
iniset $NOVA_CONF DEFAULT libvirt_type "$LIBVIRT_TYPE"
iniset $NOVA_CONF DEFAULT libvirt_cpu_mode "none"
fi
iniset $NOVA_CONF DEFAULT instance_name_template "${INSTANCE_NAME_PREFIX}%08x"
iniset $NOVA_CONF DEFAULT osapi_v3_enabled "True"
@ -636,26 +640,32 @@ function install_novaclient() {
# install_nova() - Collect source and prepare
function install_nova() {
if is_service_enabled n-cpu; then
if is_ubuntu; then
install_package libvirt-bin
elif is_fedora || is_suse; then
install_package libvirt
else
exit_distro_not_supported "libvirt installation"
fi
# Install and configure **LXC** if specified. LXC is another approach to
# splitting a system into many smaller parts. LXC uses cgroups and chroot
# to simulate multiple systems.
if [[ "$LIBVIRT_TYPE" == "lxc" ]]; then
if [[ "$VIRT_DRIVER" = 'libvirt' ]]; then
if is_ubuntu; then
if [[ "$DISTRO" > natty ]]; then
install_package cgroup-lite
fi
install_package kvm
install_package libvirt-bin
install_package python-libvirt
elif is_fedora || is_suse; then
install_package kvm
install_package libvirt
install_package libvirt-python
else
### FIXME(dtroyer): figure this out
echo "RPM-based cgroup not implemented yet"
yum_install libcgroup-tools
exit_distro_not_supported "libvirt installation"
fi
# 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
fi
fi
@ -698,9 +708,13 @@ function start_nova() {
screen_it n-cell "cd $NOVA_DIR && $NOVA_BIN_DIR/nova-cells --config-file $NOVA_CELLS_CONF"
fi
# The group **$LIBVIRT_GROUP** is added to the current user in this script.
# Use 'sg' to execute nova-compute as a member of the **$LIBVIRT_GROUP** group.
screen_it n-cpu "cd $NOVA_DIR && sg $LIBVIRT_GROUP '$NOVA_BIN_DIR/nova-compute --config-file $NOVA_CONF_BOTTOM'"
if [[ "$VIRT_DRIVER" = 'libvirt' ]]; then
# The group **$LIBVIRT_GROUP** is added to the current user in this script.
# Use 'sg' to execute nova-compute as a member of the **$LIBVIRT_GROUP** group.
screen_it n-cpu "cd $NOVA_DIR && sg $LIBVIRT_GROUP '$NOVA_BIN_DIR/nova-compute --config-file $NOVA_CONF_BOTTOM'"
else
screen_it n-cpu "cd $NOVA_DIR && $NOVA_BIN_DIR/nova-compute --config-file $NOVA_CONF_BOTTOM"
fi
screen_it n-crt "cd $NOVA_DIR && $NOVA_BIN_DIR/nova-cert"
screen_it n-net "cd $NOVA_DIR && $NOVA_BIN_DIR/nova-network --config-file $NOVA_CONF_BOTTOM"
screen_it n-sch "cd $NOVA_DIR && $NOVA_BIN_DIR/nova-scheduler --config-file $NOVA_CONF_BOTTOM"