458 lines
17 KiB
Plaintext
458 lines
17 KiB
Plaintext
# lib/nova
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# Functions to control the configuration and operation of the XXXX service
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# Dependencies:
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# ``functions`` file
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# ``DEST``, ``DATA_DIR`` must be defined
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# ``SERVICE_{TENANT_NAME|PASSWORD}`` must be defined
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# ``LIBVIRT_TYPE`` must be defined
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# ``INSTANCE_NAME_PREFIX``, ``VOLUME_NAME_PREFIX`` must be defined
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# ``KEYSTONE_TOKEN_FORMAT`` must be defined
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# ``stack.sh`` calls the entry points in this order:
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#
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# install_nova
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# configure_nova
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# create_nova_conf
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# init_nova
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# start_nova
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# stop_nova
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# cleanup_nova
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# Save trace setting
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XTRACE=$(set +o | grep xtrace)
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set +o xtrace
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# Defaults
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# --------
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# Set up default directories
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NOVA_DIR=$DEST/nova
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NOVACLIENT_DIR=$DEST/python-novaclient
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NOVA_STATE_PATH=${NOVA_STATE_PATH:=$DATA_DIR/nova}
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# INSTANCES_PATH is the previous name for this
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NOVA_INSTANCES_PATH=${NOVA_INSTANCES_PATH:=${INSTANCES_PATH:=$NOVA_STATE_PATH/instances}}
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NOVA_AUTH_CACHE_DIR=${NOVA_AUTH_CACHE_DIR:-/var/cache/nova}
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NOVA_CONF_DIR=/etc/nova
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NOVA_CONF=$NOVA_CONF_DIR/nova.conf
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NOVA_API_PASTE_INI=${NOVA_API_PASTE_INI:-$NOVA_CONF_DIR/api-paste.ini}
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# Support entry points installation of console scripts
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if [[ -d $NOVA_DIR/bin ]]; then
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NOVA_BIN_DIR=$NOVA_DIR/bin
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else
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NOVA_BIN_DIR=/usr/local/bin
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fi
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# Set the paths of certain binaries
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if [[ "$os_PACKAGE" = "deb" ]]; then
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NOVA_ROOTWRAP=/usr/local/bin/nova-rootwrap
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else
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NOVA_ROOTWRAP=/usr/bin/nova-rootwrap
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fi
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# Allow rate limiting to be turned off for testing, like for Tempest
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# NOTE: Set API_RATE_LIMIT="False" to turn OFF rate limiting
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API_RATE_LIMIT=${API_RATE_LIMIT:-"True"}
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# Nova supports pluggable schedulers. The default ``FilterScheduler``
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# should work in most cases.
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SCHEDULER=${SCHEDULER:-nova.scheduler.filter_scheduler.FilterScheduler}
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QEMU_CONF=/etc/libvirt/qemu.conf
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# Entry Points
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# ------------
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function add_nova_opt {
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echo "$1" >>$NOVA_CONF
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}
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# Helper to clean iptables rules
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function clean_iptables() {
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# Delete rules
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sudo iptables -S -v | sed "s/-c [0-9]* [0-9]* //g" | grep "nova" | grep "\-A" | sed "s/-A/-D/g" | awk '{print "sudo iptables",$0}' | bash
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# Delete nat rules
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sudo iptables -S -v -t nat | sed "s/-c [0-9]* [0-9]* //g" | grep "nova" | grep "\-A" | sed "s/-A/-D/g" | awk '{print "sudo iptables -t nat",$0}' | bash
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# Delete chains
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sudo iptables -S -v | sed "s/-c [0-9]* [0-9]* //g" | grep "nova" | grep "\-N" | sed "s/-N/-X/g" | awk '{print "sudo iptables",$0}' | bash
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# Delete nat chains
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sudo iptables -S -v -t nat | sed "s/-c [0-9]* [0-9]* //g" | grep "nova" | grep "\-N" | sed "s/-N/-X/g" | awk '{print "sudo iptables -t nat",$0}' | bash
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}
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# cleanup_nova() - Remove residual data files, anything left over from previous
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# runs that a clean run would need to clean up
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function cleanup_nova() {
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if is_service_enabled n-cpu; then
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# Clean iptables from previous runs
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clean_iptables
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# Destroy old instances
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instances=`sudo virsh list --all | grep $INSTANCE_NAME_PREFIX | sed "s/.*\($INSTANCE_NAME_PREFIX[0-9a-fA-F]*\).*/\1/g"`
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if [ ! "$instances" = "" ]; then
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echo $instances | xargs -n1 sudo virsh destroy || true
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echo $instances | xargs -n1 sudo virsh undefine || true
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fi
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# Logout and delete iscsi sessions
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sudo iscsiadm --mode node | grep $VOLUME_NAME_PREFIX | cut -d " " -f2 | xargs sudo iscsiadm --mode node --logout || true
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sudo iscsiadm --mode node | grep $VOLUME_NAME_PREFIX | cut -d " " -f2 | sudo iscsiadm --mode node --op delete || true
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# Clean out the instances directory.
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sudo rm -rf $NOVA_INSTANCES_PATH/*
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fi
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}
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# configure_novaclient() - Set config files, create data dirs, etc
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function configure_novaclient() {
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setup_develop $NOVACLIENT_DIR
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}
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# configure_nova_rootwrap() - configure Nova's rootwrap
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function configure_nova_rootwrap() {
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# Deploy new rootwrap filters files (owned by root).
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# Wipe any existing rootwrap.d files first
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if [[ -d $NOVA_CONF_DIR/rootwrap.d ]]; then
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sudo rm -rf $NOVA_CONF_DIR/rootwrap.d
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fi
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# Deploy filters to /etc/nova/rootwrap.d
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sudo mkdir -m 755 $NOVA_CONF_DIR/rootwrap.d
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sudo cp $NOVA_DIR/etc/nova/rootwrap.d/*.filters $NOVA_CONF_DIR/rootwrap.d
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sudo chown -R root:root $NOVA_CONF_DIR/rootwrap.d
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sudo chmod 644 $NOVA_CONF_DIR/rootwrap.d/*
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# Set up rootwrap.conf, pointing to /etc/nova/rootwrap.d
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sudo cp $NOVA_DIR/etc/nova/rootwrap.conf $NOVA_CONF_DIR/
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sudo sed -e "s:^filters_path=.*$:filters_path=$NOVA_CONF_DIR/rootwrap.d:" -i $NOVA_CONF_DIR/rootwrap.conf
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sudo chown root:root $NOVA_CONF_DIR/rootwrap.conf
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sudo chmod 0644 $NOVA_CONF_DIR/rootwrap.conf
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# Specify rootwrap.conf as first parameter to nova-rootwrap
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ROOTWRAP_SUDOER_CMD="$NOVA_ROOTWRAP $NOVA_CONF_DIR/rootwrap.conf *"
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# Set up the rootwrap sudoers for nova
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TEMPFILE=`mktemp`
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echo "$USER ALL=(root) NOPASSWD: $ROOTWRAP_SUDOER_CMD" >$TEMPFILE
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chmod 0440 $TEMPFILE
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sudo chown root:root $TEMPFILE
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sudo mv $TEMPFILE /etc/sudoers.d/nova-rootwrap
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}
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# configure_nova() - Set config files, create data dirs, etc
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function configure_nova() {
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setup_develop $NOVA_DIR
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# Put config files in ``/etc/nova`` for everyone to find
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if [[ ! -d $NOVA_CONF_DIR ]]; then
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sudo mkdir -p $NOVA_CONF_DIR
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fi
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sudo chown `whoami` $NOVA_CONF_DIR
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cp -p $NOVA_DIR/etc/nova/policy.json $NOVA_CONF_DIR
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configure_nova_rootwrap
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if is_service_enabled n-api; then
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# Use the sample http middleware configuration supplied in the
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# Nova sources. This paste config adds the configuration required
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# for Nova to validate Keystone tokens.
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# Remove legacy paste config if present
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rm -f $NOVA_DIR/bin/nova-api-paste.ini
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# Get the sample configuration file in place
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cp $NOVA_DIR/etc/nova/api-paste.ini $NOVA_CONF_DIR
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# Rewrite the authtoken configuration for our Keystone service.
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# This is a bit defensive to allow the sample file some variance.
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sed -e "
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/^admin_token/i admin_tenant_name = $SERVICE_TENANT_NAME
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/admin_tenant_name/s/^.*$/admin_tenant_name = $SERVICE_TENANT_NAME/;
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/admin_user/s/^.*$/admin_user = nova/;
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/admin_password/s/^.*$/admin_password = $SERVICE_PASSWORD/;
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s,%SERVICE_TENANT_NAME%,$SERVICE_TENANT_NAME,g;
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s,%SERVICE_TOKEN%,$SERVICE_TOKEN,g;
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" -i $NOVA_API_PASTE_INI
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fi
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if [[ "$KEYSTONE_TOKEN_FORMAT" == "PKI" ]]; then
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iniset $NOVA_API_PASTE_INI filter:authtoken signing_dir $NOVA_AUTH_CACHE_DIR
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fi
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if is_service_enabled n-cpu; then
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# Force IP forwarding on, just on case
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sudo sysctl -w net.ipv4.ip_forward=1
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# Attempt to load modules: network block device - used to manage qcow images
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sudo modprobe nbd || true
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# Check for kvm (hardware based virtualization). If unable to initialize
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# kvm, we drop back to the slower emulation mode (qemu). Note: many systems
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# come with hardware virtualization disabled in BIOS.
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if [[ "$LIBVIRT_TYPE" == "kvm" ]]; then
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sudo modprobe kvm || true
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if [ ! -e /dev/kvm ]; then
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echo "WARNING: Switching to QEMU"
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LIBVIRT_TYPE=qemu
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if which selinuxenabled 2>&1 > /dev/null && selinuxenabled; then
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# https://bugzilla.redhat.com/show_bug.cgi?id=753589
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sudo setsebool virt_use_execmem on
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fi
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fi
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fi
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# Install and configure **LXC** if specified. LXC is another approach to
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# splitting a system into many smaller parts. LXC uses cgroups and chroot
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# to simulate multiple systems.
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if [[ "$LIBVIRT_TYPE" == "lxc" ]]; then
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if [[ "$os_PACKAGE" = "deb" ]]; then
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if [[ ! "$DISTRO" > natty ]]; then
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cgline="none /cgroup cgroup cpuacct,memory,devices,cpu,freezer,blkio 0 0"
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sudo mkdir -p /cgroup
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if ! grep -q cgroup /etc/fstab; then
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echo "$cgline" | sudo tee -a /etc/fstab
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fi
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if ! mount -n | grep -q cgroup; then
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sudo mount /cgroup
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fi
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fi
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fi
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fi
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if is_service_enabled quantum && is_quantum_ovs_base_plugin "$Q_PLUGIN" && ! sudo grep -q '^cgroup_device_acl' $QEMU_CONF ; then
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# Add /dev/net/tun to cgroup_device_acls, needed for type=ethernet interfaces
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cat <<EOF | sudo tee -a $QEMU_CONF
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cgroup_device_acl = [
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"/dev/null", "/dev/full", "/dev/zero",
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"/dev/random", "/dev/urandom",
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"/dev/ptmx", "/dev/kvm", "/dev/kqemu",
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"/dev/rtc", "/dev/hpet","/dev/net/tun",
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]
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EOF
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fi
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if [[ "$os_PACKAGE" = "deb" ]]; then
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LIBVIRT_DAEMON=libvirt-bin
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else
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# http://wiki.libvirt.org/page/SSHPolicyKitSetup
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if ! grep ^libvirtd: /etc/group >/dev/null; then
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sudo groupadd libvirtd
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fi
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sudo bash -c 'cat <<EOF >/etc/polkit-1/localauthority/50-local.d/50-libvirt-remote-access.pkla
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[libvirt Management Access]
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Identity=unix-group:libvirtd
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Action=org.libvirt.unix.manage
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ResultAny=yes
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ResultInactive=yes
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ResultActive=yes
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EOF'
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LIBVIRT_DAEMON=libvirtd
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fi
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# The user that nova runs as needs to be member of **libvirtd** group otherwise
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# nova-compute will be unable to use libvirt.
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sudo usermod -a -G libvirtd `whoami`
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# libvirt detects various settings on startup, as we potentially changed
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# the system configuration (modules, filesystems), we need to restart
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# libvirt to detect those changes.
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restart_service $LIBVIRT_DAEMON
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# Instance Storage
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# ----------------
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# Nova stores each instance in its own directory.
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mkdir -p $NOVA_INSTANCES_PATH
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# You can specify a different disk to be mounted and used for backing the
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# virtual machines. If there is a partition labeled nova-instances we
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# mount it (ext filesystems can be labeled via e2label).
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if [ -L /dev/disk/by-label/nova-instances ]; then
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if ! mount -n | grep -q $NOVA_INSTANCES_PATH; then
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sudo mount -L nova-instances $NOVA_INSTANCES_PATH
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sudo chown -R `whoami` $NOVA_INSTANCES_PATH
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fi
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fi
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# Clean up old instances
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cleanup_nova
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fi
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}
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# create_nova_conf() - Create a new nova.conf file
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function create_nova_conf() {
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# Remove legacy ``nova.conf``
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rm -f $NOVA_DIR/bin/nova.conf
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# (Re)create ``nova.conf``
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rm -f $NOVA_CONF
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add_nova_opt "[DEFAULT]"
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add_nova_opt "verbose=True"
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add_nova_opt "auth_strategy=keystone"
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add_nova_opt "allow_resize_to_same_host=True"
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add_nova_opt "api_paste_config=$NOVA_API_PASTE_INI"
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add_nova_opt "rootwrap_config=$NOVA_CONF_DIR/rootwrap.conf"
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add_nova_opt "compute_scheduler_driver=$SCHEDULER"
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add_nova_opt "dhcpbridge_flagfile=$NOVA_CONF"
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add_nova_opt "force_dhcp_release=True"
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add_nova_opt "fixed_range=$FIXED_RANGE"
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add_nova_opt "s3_host=$SERVICE_HOST"
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add_nova_opt "s3_port=$S3_SERVICE_PORT"
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add_nova_opt "osapi_compute_extension=nova.api.openstack.compute.contrib.standard_extensions"
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add_nova_opt "my_ip=$HOST_IP"
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local dburl
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database_connection_url dburl nova
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add_nova_opt "sql_connection=$dburl"
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add_nova_opt "libvirt_type=$LIBVIRT_TYPE"
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add_nova_opt "libvirt_cpu_mode=none"
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add_nova_opt "instance_name_template=${INSTANCE_NAME_PREFIX}%08x"
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if is_service_enabled n-api; then
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add_nova_opt "enabled_apis=$NOVA_ENABLED_APIS"
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fi
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if is_service_enabled n-vol; then
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NOVA_ENABLED_APIS="${NOVA_ENABLED_APIS},osapi_volume"
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iniset $NOVA_CONF DEFAULT enabled_apis $NOVA_ENABLED_APIS
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add_nova_opt "volume_api_class=nova.volume.api.API"
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add_nova_opt "volume_group=$VOLUME_GROUP"
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add_nova_opt "volume_name_template=${VOLUME_NAME_PREFIX}%s"
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# oneiric no longer supports ietadm
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add_nova_opt "iscsi_helper=tgtadm"
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fi
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if is_service_enabled cinder; then
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add_nova_opt "volume_api_class=nova.volume.cinder.API"
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fi
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if [ -n "$NOVA_STATE_PATH" ]; then
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add_nova_opt "state_path=$NOVA_STATE_PATH"
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add_nova_opt "lock_path=$NOVA_STATE_PATH"
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fi
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if [ -n "$NOVA_INSTANCES_PATH" ]; then
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add_nova_opt "instances_path=$NOVA_INSTANCES_PATH"
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fi
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if [ "$MULTI_HOST" != "False" ]; then
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add_nova_opt "multi_host=True"
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add_nova_opt "send_arp_for_ha=True"
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fi
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if [ "$SYSLOG" != "False" ]; then
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add_nova_opt "use_syslog=True"
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fi
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if [ "$API_RATE_LIMIT" != "True" ]; then
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add_nova_opt "api_rate_limit=False"
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fi
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if [ "$LOG_COLOR" == "True" ] && [ "$SYSLOG" == "False" ]; then
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# Add color to logging output
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add_nova_opt "logging_context_format_string=%(asctime)s %(color)s%(levelname)s %(name)s [[01;36m%(request_id)s [00;36m%(user_name)s %(project_name)s%(color)s] [01;35m%(instance)s%(color)s%(message)s[00m"
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add_nova_opt "logging_default_format_string=%(asctime)s %(color)s%(levelname)s %(name)s [[00;36m-%(color)s] [01;35m%(instance)s%(color)s%(message)s[00m"
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add_nova_opt "logging_debug_format_suffix=[00;33mfrom (pid=%(process)d) %(funcName)s %(pathname)s:%(lineno)d[00m"
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add_nova_opt "logging_exception_prefix=%(color)s%(asctime)s TRACE %(name)s [01;35m%(instance)s[00m"
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else
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# Show user_name and project_name instead of user_id and project_id
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add_nova_opt "logging_context_format_string=%(asctime)s %(levelname)s %(name)s [%(request_id)s %(user_name)s %(project_name)s] %(instance)s%(message)s"
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fi
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if is_service_enabled ceilometer; then
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add_nova_opt "instance_usage_audit=True"
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add_nova_opt "instance_usage_audit_period=hour"
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add_nova_opt "notification_driver=nova.openstack.common.notifier.rabbit_notifier"
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add_nova_opt "notification_driver=ceilometer.compute.nova_notifier"
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fi
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# Provide some transition from ``EXTRA_FLAGS`` to ``EXTRA_OPTS``
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if [[ -z "$EXTRA_OPTS" && -n "$EXTRA_FLAGS" ]]; then
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EXTRA_OPTS=$EXTRA_FLAGS
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fi
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# Define extra nova conf flags by defining the array ``EXTRA_OPTS``.
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# For Example: ``EXTRA_OPTS=(foo=true bar=2)``
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for I in "${EXTRA_OPTS[@]}"; do
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# Attempt to convert flags to options
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add_nova_opt ${I//--}
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done
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}
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# init_nova() - Initialize databases, etc.
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function init_nova() {
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# Nova Database
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# -------------
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# All nova components talk to a central database. We will need to do this step
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# only once for an entire cluster.
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if is_service_enabled $DATABASE_BACKENDS && is_service_enabled nova; then
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# (Re)create nova database
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# Explicitly use latin1: to avoid lp#829209, nova expects the database to
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# use latin1 by default, and then upgrades the database to utf8 (see the
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# 082_essex.py in nova)
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recreate_database nova latin1
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# (Re)create nova database
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$NOVA_BIN_DIR/nova-manage db sync
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fi
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if [[ "$KEYSTONE_TOKEN_FORMAT" == "PKI" ]]; then
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# Create cache dir
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sudo mkdir -p $NOVA_AUTH_CACHE_DIR
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sudo chown `whoami` $NOVA_AUTH_CACHE_DIR
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fi
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}
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# install_novaclient() - Collect source and prepare
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function install_novaclient() {
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git_clone $NOVACLIENT_REPO $NOVACLIENT_DIR $NOVACLIENT_BRANCH
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}
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# install_nova() - Collect source and prepare
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function install_nova() {
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if is_service_enabled n-cpu; then
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if [[ "$os_PACKAGE" = "deb" ]]; then
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LIBVIRT_PKG_NAME=libvirt-bin
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else
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LIBVIRT_PKG_NAME=libvirt
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fi
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install_package $LIBVIRT_PKG_NAME
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# Install and configure **LXC** if specified. LXC is another approach to
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# splitting a system into many smaller parts. LXC uses cgroups and chroot
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# to simulate multiple systems.
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if [[ "$LIBVIRT_TYPE" == "lxc" ]]; then
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if [[ "$os_PACKAGE" = "deb" ]]; then
|
||
if [[ "$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
|
||
|
||
git_clone $NOVA_REPO $NOVA_DIR $NOVA_BRANCH
|
||
}
|
||
|
||
# start_nova() - Start running processes, including screen
|
||
function start_nova() {
|
||
# The group **libvirtd** is added to the current user in this script.
|
||
# Use 'sg' to execute nova-compute as a member of the **libvirtd** group.
|
||
# ``screen_it`` checks ``is_service_enabled``, it is not needed here
|
||
screen_it n-cpu "cd $NOVA_DIR && sg libvirtd $NOVA_BIN_DIR/nova-compute"
|
||
screen_it n-crt "cd $NOVA_DIR && $NOVA_BIN_DIR/nova-cert"
|
||
screen_it n-net "cd $NOVA_DIR && $NOVA_BIN_DIR/nova-network"
|
||
screen_it n-sch "cd $NOVA_DIR && $NOVA_BIN_DIR/nova-scheduler"
|
||
screen_it n-novnc "cd $NOVNC_DIR && ./utils/nova-novncproxy --config-file $NOVA_CONF --web ."
|
||
screen_it n-xvnc "cd $NOVA_DIR && ./bin/nova-xvpvncproxy --config-file $NOVA_CONF"
|
||
screen_it n-cauth "cd $NOVA_DIR && ./bin/nova-consoleauth"
|
||
}
|
||
|
||
# stop_nova() - Stop running processes (non-screen)
|
||
function stop_nova() {
|
||
# Kill the nova screen windows
|
||
for serv in n-api n-cpu n-crt n-net n-sch n-novnc n-xvnc n-cauth; do
|
||
screen -S $SCREEN_NAME -p $serv -X kill
|
||
done
|
||
}
|
||
|
||
# Restore xtrace
|
||
$XTRACE
|