Add exercise that boots an instance from a volume.
* Launches a cirros builder instance * Mounts a disk to the builder instance * Creates a bootable volume from builder * Launches the volume-backed instance * Update glance syntax * Don't require instance-to-web communication (that only works with fully configured floating ips) * Add footer/header Change-Id: Ia6dcf399ee49154aaf4e597b060164c2f41cf3d2
This commit is contained in:
Anthony Young
parent
ae604985e7
commit
440be4b6a8
253
exercises/boot_from_volume.sh
Executable file
253
exercises/boot_from_volume.sh
Executable file
@ -0,0 +1,253 @@
|
||||
#!/usr/bin/env bash
|
||||
|
||||
# **boot_from_volume.sh**
|
||||
|
||||
# This script demonstrates how to boot from a volume. It does the following:
|
||||
# * Create a 'builder' instance
|
||||
# * Attach a volume to the instance
|
||||
# * Format and install an os onto the volume
|
||||
# * Detach volume from builder, and then boot volume-backed instance
|
||||
|
||||
echo "**************************************************"
|
||||
echo "Begin DevStack Exercise: $0"
|
||||
echo "**************************************************"
|
||||
|
||||
# This script exits on an error so that errors don't compound and you see
|
||||
# only the first error that occured.
|
||||
set -o errexit
|
||||
|
||||
# Print the commands being run so that we can see the command that triggers
|
||||
# an error. It is also useful for following allowing as the install occurs.
|
||||
set -o xtrace
|
||||
|
||||
|
||||
# Settings
|
||||
# ========
|
||||
|
||||
# Keep track of the current directory
|
||||
EXERCISE_DIR=$(cd $(dirname "$0") && pwd)
|
||||
TOP_DIR=$(cd $EXERCISE_DIR/..; pwd)
|
||||
|
||||
# Import common functions
|
||||
source $TOP_DIR/functions
|
||||
|
||||
# Import configuration
|
||||
source $TOP_DIR/openrc
|
||||
|
||||
# Import exercise configuration
|
||||
source $TOP_DIR/exerciserc
|
||||
|
||||
# Boot this image, use first AMI image if unset
|
||||
DEFAULT_IMAGE_NAME=${DEFAULT_IMAGE_NAME:-ami}
|
||||
|
||||
# Instance type
|
||||
DEFAULT_INSTANCE_TYPE=${DEFAULT_INSTANCE_TYPE:-m1.tiny}
|
||||
|
||||
# Default floating IP pool name
|
||||
DEFAULT_FLOATING_POOL=${DEFAULT_FLOATING_POOL:-nova}
|
||||
|
||||
# Grab the id of the image to launch
|
||||
IMAGE=`glance -f index | egrep $DEFAULT_IMAGE_NAME | head -1 | cut -d" " -f1`
|
||||
|
||||
die_if_not_set IMAGE "Failure getting image"
|
||||
|
||||
# Instance and volume names
|
||||
INSTANCE_NAME=${INSTANCE_NAME:-test_instance}
|
||||
VOL_INSTANCE_NAME=${VOL_INSTANCE_NAME:-test_vol_instance}
|
||||
VOL_NAME=${VOL_NAME:-test_volume}
|
||||
|
||||
# Clean-up from previous runs
|
||||
nova delete $VOL_INSTANCE_NAME || true
|
||||
nova delete $INSTANCE_NAME || true
|
||||
|
||||
# Wait till server is gone
|
||||
if ! timeout $ACTIVE_TIMEOUT sh -c "while nova show $INSTANCE_NAME; do sleep 1; done"; then
|
||||
echo "server didn't terminate!"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Configure Security Groups
|
||||
SECGROUP=${SECGROUP:-test_secgroup}
|
||||
nova secgroup-delete $SECGROUP || true
|
||||
nova secgroup-create $SECGROUP "$SECGROUP description"
|
||||
nova secgroup-add-rule $SECGROUP icmp -1 -1 0.0.0.0/0
|
||||
nova secgroup-add-rule $SECGROUP tcp 22 22 0.0.0.0/0
|
||||
|
||||
# Determinine instance type
|
||||
INSTANCE_TYPE=`nova flavor-list | grep $DEFAULT_INSTANCE_TYPE | cut -d"|" -f2`
|
||||
if [[ -z "$INSTANCE_TYPE" ]]; then
|
||||
# grab the first flavor in the list to launch if default doesn't exist
|
||||
INSTANCE_TYPE=`nova flavor-list | head -n 4 | tail -n 1 | cut -d"|" -f2`
|
||||
fi
|
||||
|
||||
# Setup Keypair
|
||||
KEY_NAME=test_key
|
||||
KEY_FILE=key.pem
|
||||
nova keypair-delete $KEY_NAME || true
|
||||
nova keypair-add $KEY_NAME > $KEY_FILE
|
||||
chmod 600 $KEY_FILE
|
||||
|
||||
# Boot our instance
|
||||
VM_UUID=`nova boot --flavor $INSTANCE_TYPE --image $IMAGE --security_groups=$SECGROUP --key_name $KEY_NAME $INSTANCE_NAME | grep ' id ' | cut -d"|" -f3 | sed 's/ //g'`
|
||||
|
||||
# check that the status is active within ACTIVE_TIMEOUT seconds
|
||||
if ! timeout $ACTIVE_TIMEOUT sh -c "while ! nova show $VM_UUID | grep status | grep -q ACTIVE; do sleep 1; done"; then
|
||||
echo "server didn't become active!"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Delete the old volume
|
||||
nova volume-delete $VOL_NAME || true
|
||||
|
||||
# Free every floating ips - setting FREE_ALL_FLOATING_IPS=True in localrc will make life easier for testers
|
||||
if [ "$FREE_ALL_FLOATING_IPS" = "True" ]; then
|
||||
nova floating-ip-list | grep nova | cut -d "|" -f2 | tr -d " " | xargs -n1 nova floating-ip-delete || true
|
||||
fi
|
||||
|
||||
# Allocate floating ip
|
||||
FLOATING_IP=`nova floating-ip-create | grep $DEFAULT_FLOATING_POOL | cut -d '|' -f2 | tr -d ' '`
|
||||
|
||||
# Make sure the ip gets allocated
|
||||
if ! timeout $ASSOCIATE_TIMEOUT sh -c "while ! nova floating-ip-list | grep -q $FLOATING_IP; do sleep 1; done"; then
|
||||
echo "Floating IP not allocated"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Add floating ip to our server
|
||||
nova add-floating-ip $VM_UUID $FLOATING_IP
|
||||
|
||||
# Test we can ping our floating ip within ASSOCIATE_TIMEOUT seconds
|
||||
if ! timeout $ASSOCIATE_TIMEOUT sh -c "while ! ping -c1 -w1 $FLOATING_IP; do sleep 1; done"; then
|
||||
echo "Couldn't ping server with floating ip"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Create our volume
|
||||
nova volume-create --display_name=$VOL_NAME 1
|
||||
|
||||
# Wait for volume to activate
|
||||
if ! timeout $ACTIVE_TIMEOUT sh -c "while ! nova volume-list | grep $VOL_NAME | grep available; do sleep 1; done"; then
|
||||
echo "Volume $VOL_NAME not created"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# FIXME (anthony) - python-novaclient should accept a volume_name for the attachment param?
|
||||
DEVICE=/dev/vdb
|
||||
VOLUME_ID=`nova volume-list | grep $VOL_NAME | cut -d '|' -f 2 | tr -d ' '`
|
||||
nova volume-attach $INSTANCE_NAME $VOLUME_ID $DEVICE
|
||||
|
||||
# Wait till volume is attached
|
||||
if ! timeout $ACTIVE_TIMEOUT sh -c "while ! nova volume-list | grep $VOL_NAME | grep in-use; do sleep 1; done"; then
|
||||
echo "Volume $VOL_NAME not created"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# The following script builds our bootable volume.
|
||||
# To do this, ssh to the builder instance, mount volume, and build a volume-backed image.
|
||||
STAGING_DIR=/tmp/stage
|
||||
CIRROS_DIR=/tmp/cirros
|
||||
ssh -o StrictHostKeyChecking=no -i $KEY_FILE cirros@$FLOATING_IP << EOF
|
||||
set -o errexit
|
||||
set -o xtrace
|
||||
sudo mkdir -p $STAGING_DIR
|
||||
sudo mkfs.ext3 -b 1024 $DEVICE 1048576
|
||||
sudo mount $DEVICE $STAGING_DIR
|
||||
# The following lines create a writable empty file so that we can scp
|
||||
# the actual file
|
||||
sudo touch $STAGING_DIR/cirros-0.3.0-x86_64-rootfs.img.gz
|
||||
sudo chown cirros $STAGING_DIR/cirros-0.3.0-x86_64-rootfs.img.gz
|
||||
EOF
|
||||
|
||||
# Download cirros
|
||||
if [ ! -e cirros-0.3.0-x86_64-rootfs.img.gz ]; then
|
||||
wget http://images.ansolabs.com/cirros-0.3.0-x86_64-rootfs.img.gz
|
||||
fi
|
||||
|
||||
# Copy cirros onto the volume
|
||||
scp -o StrictHostKeyChecking=no -i $KEY_FILE cirros-0.3.0-x86_64-rootfs.img.gz cirros@$FLOATING_IP:$STAGING_DIR
|
||||
|
||||
# Unpack cirros into volume
|
||||
ssh -o StrictHostKeyChecking=no -i $KEY_FILE cirros@$FLOATING_IP << EOF
|
||||
set -o errexit
|
||||
set -o xtrace
|
||||
cd $STAGING_DIR
|
||||
sudo mkdir -p $CIRROS_DIR
|
||||
sudo gunzip cirros-0.3.0-x86_64-rootfs.img.gz
|
||||
sudo mount cirros-0.3.0-x86_64-rootfs.img $CIRROS_DIR
|
||||
|
||||
# Copy cirros into our volume
|
||||
sudo cp -pr $CIRROS_DIR/* $STAGING_DIR/
|
||||
|
||||
cd
|
||||
sync
|
||||
sudo umount $CIRROS_DIR
|
||||
# The following typically fails. Don't know why.
|
||||
sudo umount $STAGING_DIR || true
|
||||
EOF
|
||||
|
||||
# Detach the volume from the builder instance
|
||||
nova volume-detach $INSTANCE_NAME $VOLUME_ID
|
||||
|
||||
# Boot instance from volume! This is done with the --block_device_mapping param.
|
||||
# The format of mapping is:
|
||||
# <dev_name>=<id>:<type>:<size(GB)>:<delete_on_terminate>
|
||||
# Leaving the middle two fields blank appears to do-the-right-thing
|
||||
VOL_VM_UUID=`nova boot --flavor $INSTANCE_TYPE --image $IMAGE --block_device_mapping vda=$VOLUME_ID:::0 --security_groups=$SECGROUP --key_name $KEY_NAME $VOL_INSTANCE_NAME | grep ' id ' | cut -d"|" -f3 | sed 's/ //g'`
|
||||
|
||||
# Check that the status is active within ACTIVE_TIMEOUT seconds
|
||||
if ! timeout $ACTIVE_TIMEOUT sh -c "while ! nova show $VOL_VM_UUID | grep status | grep -q ACTIVE; do sleep 1; done"; then
|
||||
echo "server didn't become active!"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Add floating ip to our server
|
||||
nova remove-floating-ip $VM_UUID $FLOATING_IP
|
||||
|
||||
# Gratuitous sleep, probably hiding a race condition :/
|
||||
sleep 1
|
||||
|
||||
# Add floating ip to our server
|
||||
nova add-floating-ip $VOL_VM_UUID $FLOATING_IP
|
||||
|
||||
# Test we can ping our floating ip within ASSOCIATE_TIMEOUT seconds
|
||||
if ! timeout $ASSOCIATE_TIMEOUT sh -c "while ! ping -c1 -w1 $FLOATING_IP; do sleep 1; done"; then
|
||||
echo "Couldn't ping volume-backed server with floating ip"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Make sure our volume-backed instance launched
|
||||
ssh -o StrictHostKeyChecking=no -i $KEY_FILE cirros@$FLOATING_IP << EOF
|
||||
echo "success!"
|
||||
EOF
|
||||
|
||||
# Delete volume backed instance
|
||||
nova delete $VOL_INSTANCE_NAME
|
||||
|
||||
# Wait till our volume is no longer in-use
|
||||
if ! timeout $ACTIVE_TIMEOUT sh -c "while ! nova volume-list | grep $VOL_NAME | grep available; do sleep 1; done"; then
|
||||
echo "Volume $VOL_NAME not created"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Delete the volume
|
||||
nova volume-delete $VOL_NAME
|
||||
|
||||
# Delete instance
|
||||
nova delete $INSTANCE_NAME
|
||||
|
||||
# Wait for termination
|
||||
if ! timeout $ACTIVE_TIMEOUT sh -c "while nova show $INSTANCE_NAME; do sleep 1; done"; then
|
||||
echo "server didn't terminate!"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# De-allocate the floating ip
|
||||
nova floating-ip-delete $FLOATING_IP
|
||||
|
||||
# Delete secgroup
|
||||
nova secgroup-delete $SECGROUP
|
||||
|
||||
set +o xtrace
|
||||
echo "**************************************************"
|
||||
echo "End DevStack Exercise: $0"
|
||||
echo "**************************************************"
|
||||
Loading…
Reference in New Issue
Block a user