#!/usr/bin/env bash # **boot_from_volume.sh** # This script demonstrates how to boot from a volume. It does the following: # # * Create a bootable volume # * Boot a volume-backed instance echo "*********************************************************************" echo "Begin DevStack Exercise: $0" echo "*********************************************************************" # This script exits on an error so that errors don't compound and you see # only the first error that occurred. set -o errexit # Print the commands being run so that we can see the command that triggers # an error. It is also useful for following allowing as the install occurs. set -o xtrace # Settings # ======== # Keep track of the current directory EXERCISE_DIR=$(cd $(dirname "$0") && pwd) TOP_DIR=$(cd $EXERCISE_DIR/..; pwd) # Import common functions source $TOP_DIR/functions # Import project functions source $TOP_DIR/lib/cinder source $TOP_DIR/lib/neutron # Import configuration source $TOP_DIR/openrc # Import exercise configuration source $TOP_DIR/exerciserc # If cinder is not enabled we exit with exitcode 55 so that # the exercise is skipped is_service_enabled cinder || exit 55 # Ironic does not support boot from volume. [ "$VIRT_DRIVER" == "ironic" ] && exit 55 # Instance type to create DEFAULT_INSTANCE_TYPE=${DEFAULT_INSTANCE_TYPE:-m1.tiny} # Boot this image, use first AMI image if unset DEFAULT_IMAGE_NAME=${DEFAULT_IMAGE_NAME:-ami} # Security group name SECGROUP=${SECGROUP:-boot_secgroup} # Instance and volume names VM_NAME=${VM_NAME:-ex-bfv-inst} VOL_NAME=${VOL_NAME:-ex-vol-bfv} # Launching a server # ================== # List servers for tenant: nova list # Images # ------ # List the images available glance image-list # Grab the id of the image to launch IMAGE=$(glance image-list | egrep " $DEFAULT_IMAGE_NAME " | get_field 1) die_if_not_set $LINENO IMAGE "Failure getting image $DEFAULT_IMAGE_NAME" # Security Groups # --------------- # List security groups nova secgroup-list if is_service_enabled n-cell; then # Cells does not support security groups, so force the use of "default" SECGROUP="default" echo "Using the default security group because of Cells." else # Create a secgroup if ! nova secgroup-list | grep -q $SECGROUP; then nova secgroup-create $SECGROUP "$SECGROUP description" if ! timeout $ASSOCIATE_TIMEOUT sh -c "while ! nova secgroup-list | grep -q $SECGROUP; do sleep 1; done"; then echo "Security group not created" exit 1 fi fi fi # Configure Security Group Rules if ! nova secgroup-list-rules $SECGROUP | grep -q icmp; then nova secgroup-add-rule $SECGROUP icmp -1 -1 0.0.0.0/0 fi if ! nova secgroup-list-rules $SECGROUP | grep -q " tcp .* 22 "; then nova secgroup-add-rule $SECGROUP tcp 22 22 0.0.0.0/0 fi # List secgroup rules nova secgroup-list-rules $SECGROUP # Set up instance # --------------- # List flavors nova flavor-list # Select a flavor INSTANCE_TYPE=$(nova flavor-list | grep $DEFAULT_INSTANCE_TYPE | get_field 1) if [[ -z "$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 | get_field 1) fi # Clean-up from previous runs nova delete $VM_NAME || true if ! timeout $ACTIVE_TIMEOUT sh -c "while nova show $VM_NAME; do sleep 1; done"; then echo "server didn't terminate!" exit 1 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 # Set up volume # ------------- # Delete any old volume cinder delete $VOL_NAME || true if ! timeout $ACTIVE_TIMEOUT sh -c "while cinder list | grep $VOL_NAME; do sleep 1; done"; then echo "Volume $VOL_NAME not deleted" exit 1 fi # Create the bootable volume start_time=$(date +%s) cinder create --image-id $IMAGE --display-name=$VOL_NAME --display-description "test bootable volume: $VOL_NAME" $DEFAULT_VOLUME_SIZE || \ die $LINENO "Failure creating volume $VOL_NAME" if ! timeout $ACTIVE_TIMEOUT sh -c "while ! cinder list | grep $VOL_NAME | grep available; do sleep 1; done"; then echo "Volume $VOL_NAME not created" exit 1 fi end_time=$(date +%s) echo "Completed cinder create in $((end_time - start_time)) seconds" # Get volume ID VOL_ID=$(cinder list | grep $VOL_NAME | get_field 1) die_if_not_set $LINENO VOL_ID "Failure retrieving volume ID for $VOL_NAME" # Boot instance # ------------- # Boot using the --block-device-mapping param. The format of mapping is: # =::: # Leaving the middle two fields blank appears to do-the-right-thing VM_UUID=$(nova boot --flavor $INSTANCE_TYPE --image $IMAGE --block-device-mapping vda=$VOL_ID --security-groups=$SECGROUP --key-name $KEY_NAME $VM_NAME | grep ' id ' | get_field 2) die_if_not_set $LINENO VM_UUID "Failure launching $VM_NAME" # Check that the status is active within ACTIVE_TIMEOUT seconds if ! timeout $ACTIVE_TIMEOUT sh -c "while ! nova show $VM_UUID | grep status | grep -q ACTIVE; do sleep 1; done"; then echo "server didn't become active!" exit 1 fi # Get the instance IP IP=$(get_instance_ip $VM_UUID $PRIVATE_NETWORK_NAME) die_if_not_set $LINENO IP "Failure retrieving IP address" # Private IPs can be pinged in single node deployments ping_check "$PRIVATE_NETWORK_NAME" $IP $BOOT_TIMEOUT # Clean up # -------- # Delete volume backed instance nova delete $VM_UUID || die $LINENO "Failure deleting instance $VM_NAME" if ! timeout $TERMINATE_TIMEOUT sh -c "while nova list | grep -q $VM_UUID; do sleep 1; done"; then echo "Server $VM_NAME not deleted" exit 1 fi # Wait for volume to be released if ! timeout $ACTIVE_TIMEOUT sh -c "while ! cinder list | grep $VOL_NAME | grep available; do sleep 1; done"; then echo "Volume $VOL_NAME not released" exit 1 fi # Delete volume start_time=$(date +%s) cinder delete $VOL_ID || die $LINENO "Failure deleting volume $VOLUME_NAME" if ! timeout $ACTIVE_TIMEOUT sh -c "while cinder list | grep $VOL_NAME; do sleep 1; done"; then echo "Volume $VOL_NAME not deleted" exit 1 fi end_time=$(date +%s) echo "Completed cinder delete in $((end_time - start_time)) seconds" if [[ $SECGROUP = "default" ]] ; then echo "Skipping deleting default security group" else # Delete secgroup nova secgroup-delete $SECGROUP || die $LINENO "Failure deleting security group $SECGROUP" fi set +o xtrace echo "*********************************************************************" echo "SUCCESS: End DevStack Exercise: $0" echo "*********************************************************************"