openstack/devstack
Code Issues Proposed changes
23bdb93293
devstack/tools/xen/install_os_domU.sh
Mate Lakat 0b3804bff7 xenapi - cleanup 
Add error on unitialised variable to the scripts. This way some issues
were identified. Also modify README with fresh variables. The patch
includes:
 - Add SWIFT_HASH to the README
 - Add XENAPI_CONNECTION_URL to the README
 - Add VNCSERVER_PROXYCLIENT_ADDRESS to the README
 - Introduce UBUNTU_INST_IFACE which is the OpenStack VM interface used
   for the netinstall. It defaults to eth3. Previously this parameter
   was set by the combination of HOST_IP_IFACE and the undocumented
   NETINSTALL_IP
 - get rid of NETINSTALL_IP
 - xenrc includes CLEAN_TEMPLATES
 - xenrc no longer tries to change directory
 - remove chrooting from prepare_guest.sh (STAGING_DIR was always / )
 - remove DO_TGZ variable from prepare_guest.sh
 - use arguments to call prepare_guest.sh, instead of env vars
 - Fix backslash escaping in prepare_guest_template.sh

NOTE: networking is about to be addressed in a separate change.

Related to blueprint xenapi-devstack-cleanup

Change-Id: Ie9a75321c7f41cc9a0cc051398d1e6ec2c88adfa
2013-05-12 17:27:13 +01:00

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#!/bin/bash
# This script must be run on a XenServer or XCP machine
#
# It creates a DomU VM that runs OpenStack services
#
# For more details see: README.md
set -o errexit
set -o nounset
set -o xtrace
# Abort if localrc is not set
if [ ! -e ../../localrc ]; then
echo "You must have a localrc with ALL necessary passwords defined before proceeding."
echo "See the xen README for required passwords."
exit 1
fi
# This directory
THIS_DIR=$(cd $(dirname "$0") && pwd)
# Source lower level functions
. $THIS_DIR/../../functions
# Include onexit commands
. $THIS_DIR/scripts/on_exit.sh
# xapi functions
. $THIS_DIR/functions
#
# Get Settings
#
# Source params - override xenrc params in your localrc to suit your taste
source $THIS_DIR/xenrc
xe_min()
{
local cmd="$1"
shift
xe "$cmd" --minimal "$@"
}
#
# Prepare Dom0
# including installing XenAPI plugins
#
cd $THIS_DIR
# Install plugins
## Nova plugins
NOVA_ZIPBALL_URL=${NOVA_ZIPBALL_URL:-$(zip_snapshot_location $NOVA_REPO $NOVA_BRANCH)}
install_xapi_plugins_from_zipball $NOVA_ZIPBALL_URL
## Install the netwrap xapi plugin to support agent control of dom0 networking
if [[ "$ENABLED_SERVICES" =~ "q-agt" && "$Q_PLUGIN" = "openvswitch" ]]; then
QUANTUM_ZIPBALL_URL=${QUANTUM_ZIPBALL_URL:-$(zip_snapshot_location $QUANTUM_REPO $QUANTUM_BRANCH)}
install_xapi_plugins_from_zipball $QUANTUM_ZIPBALL_URL
fi
create_directory_for_kernels
#
# Configure Networking
#
# Helper to create networks
# Uses echo trickery to return network uuid
function create_network() {
br=$1
dev=$2
vlan=$3
netname=$4
if [ -z $br ]
then
pif=$(xe_min pif-list device=$dev VLAN=$vlan)
if [ -z $pif ]
then
net=$(xe network-create name-label=$netname)
else
net=$(xe_min network-list PIF-uuids=$pif)
fi
echo $net
return 0
fi
if [ ! $(xe_min network-list params=bridge | grep -w --only-matching $br) ]
then
echo "Specified bridge $br does not exist"
echo "If you wish to use defaults, please keep the bridge name empty"
exit 1
else
net=$(xe_min network-list bridge=$br)
echo $net
fi
}
function errorcheck() {
rc=$?
if [ $rc -ne 0 ]
then
exit $rc
fi
}
# Create host, vm, mgmt, pub networks on XenServer
VM_NET=$(create_network "$VM_BR" "$VM_DEV" "$VM_VLAN" "vmbr")
errorcheck
MGT_NET=$(create_network "$MGT_BR" "$MGT_DEV" "$MGT_VLAN" "mgtbr")
errorcheck
PUB_NET=$(create_network "$PUB_BR" "$PUB_DEV" "$PUB_VLAN" "pubbr")
errorcheck
# Helper to create vlans
function create_vlan() {
dev=$1
vlan=$2
net=$3
# VLAN -1 refers to no VLAN (physical network)
if [ $vlan -eq -1 ]
then
return
fi
if [ -z $(xe_min vlan-list tag=$vlan) ]
then
pif=$(xe_min pif-list network-uuid=$net)
# We created a brand new network this time
if [ -z $pif ]
then
pif=$(xe_min pif-list device=$dev VLAN=-1)
xe vlan-create pif-uuid=$pif vlan=$vlan network-uuid=$net
else
echo "VLAN does not exist but PIF attached to this network"
echo "How did we reach here?"
exit 1
fi
fi
}
# Create vlans for vm and management
create_vlan $PUB_DEV $PUB_VLAN $PUB_NET
create_vlan $VM_DEV $VM_VLAN $VM_NET
create_vlan $MGT_DEV $MGT_VLAN $MGT_NET
# Get final bridge names
if [ -z $VM_BR ]; then
VM_BR=$(xe_min network-list uuid=$VM_NET params=bridge)
fi
if [ -z $MGT_BR ]; then
MGT_BR=$(xe_min network-list uuid=$MGT_NET params=bridge)
fi
if [ -z $PUB_BR ]; then
PUB_BR=$(xe_min network-list uuid=$PUB_NET params=bridge)
fi
# dom0 ip, XenAPI is assumed to be listening
HOST_IP=${HOST_IP:-`ifconfig xenbr0 | grep "inet addr" | cut -d ":" -f2 | sed "s/ .*//"`}
# Set up ip forwarding, but skip on xcp-xapi
if [ -a /etc/sysconfig/network ]; then
if ! grep -q "FORWARD_IPV4=YES" /etc/sysconfig/network; then
# FIXME: This doesn't work on reboot!
echo "FORWARD_IPV4=YES" >> /etc/sysconfig/network
fi
fi
# Also, enable ip forwarding in rc.local, since the above trick isn't working
if ! grep -q "echo 1 >/proc/sys/net/ipv4/ip_forward" /etc/rc.local; then
echo "echo 1 >/proc/sys/net/ipv4/ip_forward" >> /etc/rc.local
fi
# Enable ip forwarding at runtime as well
echo 1 > /proc/sys/net/ipv4/ip_forward
#
# Shutdown previous runs
#
DO_SHUTDOWN=${DO_SHUTDOWN:-1}
CLEAN_TEMPLATES=${CLEAN_TEMPLATES:-false}
if [ "$DO_SHUTDOWN" = "1" ]; then
# Shutdown all domU's that created previously
clean_templates_arg=""
if $CLEAN_TEMPLATES; then
clean_templates_arg="--remove-templates"
fi
./scripts/uninstall-os-vpx.sh $clean_templates_arg
# Destroy any instances that were launched
for uuid in `xe vm-list | grep -1 instance | grep uuid | sed "s/.*\: //g"`; do
echo "Shutting down nova instance $uuid"
xe vm-unpause uuid=$uuid || true
xe vm-shutdown uuid=$uuid || true
xe vm-destroy uuid=$uuid
done
# Destroy orphaned vdis
for uuid in `xe vdi-list | grep -1 Glance | grep uuid | sed "s/.*\: //g"`; do
xe vdi-destroy uuid=$uuid
done
fi
#
# Create Ubuntu VM template
# and/or create VM from template
#
GUEST_NAME=${GUEST_NAME:-"DevStackOSDomU"}
TNAME="devstack_template"
SNAME_PREPARED="template_prepared"
SNAME_FIRST_BOOT="before_first_boot"
function wait_for_VM_to_halt() {
set +x
echo "Waiting for the VM to halt. Progress in-VM can be checked with vncviewer:"
mgmt_ip=$(echo $XENAPI_CONNECTION_URL | tr -d -c '1234567890.')
domid=$(xe vm-list name-label="$GUEST_NAME" params=dom-id minimal=true)
port=$(xenstore-read /local/domain/$domid/console/vnc-port)
echo "vncviewer -via $mgmt_ip localhost:${port:2}"
while true
do
state=$(xe_min vm-list name-label="$GUEST_NAME" power-state=halted)
if [ -n "$state" ]
then
break
else
echo -n "."
sleep 20
fi
done
set -x
}
templateuuid=$(xe template-list name-label="$TNAME")
if [ -z "$templateuuid" ]; then
#
# Install Ubuntu over network
#
# always update the preseed file, incase we have a newer one
PRESEED_URL=${PRESEED_URL:-""}
if [ -z "$PRESEED_URL" ]; then
PRESEED_URL="${HOST_IP}/devstackubuntupreseed.cfg"
HTTP_SERVER_LOCATION="/opt/xensource/www"
if [ ! -e $HTTP_SERVER_LOCATION ]; then
HTTP_SERVER_LOCATION="/var/www/html"
mkdir -p $HTTP_SERVER_LOCATION
fi
cp -f $THIS_DIR/devstackubuntupreseed.cfg $HTTP_SERVER_LOCATION
MIRROR=${MIRROR:-""}
if [ -n "$MIRROR" ]; then
sed -e "s,d-i mirror/http/hostname string .*,d-i mirror/http/hostname string $MIRROR," \
-i "${HTTP_SERVER_LOCATION}/devstackubuntupreseed.cfg"
fi
fi
# Update the template
$THIS_DIR/scripts/install_ubuntu_template.sh $PRESEED_URL
# create a new VM with the given template
# creating the correct VIFs and metadata
$THIS_DIR/scripts/install-os-vpx.sh -t "$UBUNTU_INST_TEMPLATE_NAME" -v $VM_BR -m $MGT_BR -p $PUB_BR -l $GUEST_NAME -r $OSDOMU_MEM_MB -k "flat_network_bridge=${VM_BR}"
# wait for install to finish
wait_for_VM_to_halt
# set VM to restart after a reboot
vm_uuid=$(xe_min vm-list name-label="$GUEST_NAME")
xe vm-param-set actions-after-reboot=Restart uuid="$vm_uuid"
#
# Prepare VM for DevStack
#
# Install XenServer tools, and other such things
$THIS_DIR/prepare_guest_template.sh "$GUEST_NAME"
# start the VM to run the prepare steps
xe vm-start vm="$GUEST_NAME"
# Wait for prep script to finish and shutdown system
wait_for_VM_to_halt
# Make template from VM
snuuid=$(xe vm-snapshot vm="$GUEST_NAME" new-name-label="$SNAME_PREPARED")
xe snapshot-clone uuid=$snuuid new-name-label="$TNAME"
else
#
# Template already installed, create VM from template
#
vm_uuid=$(xe vm-install template="$TNAME" new-name-label="$GUEST_NAME")
fi
#
# Inject DevStack inside VM disk
#
$THIS_DIR/build_xva.sh "$GUEST_NAME"
# create a snapshot before the first boot
# to allow a quick re-run with the same settings
xe vm-snapshot vm="$GUEST_NAME" new-name-label="$SNAME_FIRST_BOOT"
#
# Run DevStack VM
#
xe vm-start vm="$GUEST_NAME"
#
# Find IP and optionally wait for stack.sh to complete
#
function find_ip_by_name() {
local guest_name="$1"
local interface="$2"
local period=10
max_tries=10
i=0
while true
do
if [ $i -ge $max_tries ]; then
echo "Timed out waiting for devstack ip address"
exit 11
fi
devstackip=$(xe vm-list --minimal \
name-label=$guest_name \
params=networks | sed -ne "s,^.*${interface}/ip: \([0-9.]*\).*\$,\1,p")
if [ -z "$devstackip" ]
then
sleep $period
((i++))
else
echo $devstackip
break
fi
done
}
function ssh_no_check() {
ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no "$@"
}
# Note the XenServer needs to be on the chosen
# network, so XenServer can access Glance API
if [ $HOST_IP_IFACE == "eth2" ]; then
DOMU_IP=$MGT_IP
if [ $MGT_IP == "dhcp" ]; then
DOMU_IP=$(find_ip_by_name $GUEST_NAME 2)
fi
else
DOMU_IP=$PUB_IP
if [ $PUB_IP == "dhcp" ]; then
DOMU_IP=$(find_ip_by_name $GUEST_NAME 3)
fi
fi
# If we have copied our ssh credentials, use ssh to monitor while the installation runs
WAIT_TILL_LAUNCH=${WAIT_TILL_LAUNCH:-1}
COPYENV=${COPYENV:-1}
if [ "$WAIT_TILL_LAUNCH" = "1" ] && [ -e ~/.ssh/id_rsa.pub ] && [ "$COPYENV" = "1" ]; then
set +x
echo "VM Launched - Waiting for startup script"
# wait for log to appear
while ! ssh_no_check -q stack@$DOMU_IP "[ -e run.sh.log ]"; do
sleep 10
done
echo -n "Running"
while [ `ssh_no_check -q stack@$DOMU_IP pgrep -c run.sh` -ge 1 ]
do
sleep 10
echo -n "."
done
echo "done!"
set -x
# output the run.sh.log
ssh_no_check -q stack@$DOMU_IP 'cat run.sh.log'
# Fail if the expected text is not found
ssh_no_check -q stack@$DOMU_IP 'cat run.sh.log' | grep -q 'stack.sh completed in'
set +x
echo "################################################################################"
echo ""
echo "All Finished!"
echo "You can visit the OpenStack Dashboard"
echo "at http://$DOMU_IP, and contact other services at the usual ports."
else
set +x
echo "################################################################################"
echo ""
echo "All Finished!"
echo "Now, you can monitor the progress of the stack.sh installation by "
echo "tailing /opt/stack/run.sh.log from within your domU."
echo ""
echo "ssh into your domU now: 'ssh stack@$DOMU_IP' using your password"
echo "and then do: 'tail -f /opt/stack/run.sh.log'"
echo ""
echo "When the script completes, you can then visit the OpenStack Dashboard"
echo "at http://$DOMU_IP, and contact other services at the usual ports."
fi
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