Script for transferring VMs from one Openstack project to another

o7k-volume-and-instance-migration.sh

#!/bin/bash
# Requires Bash version 4+ because it uses dictionaries/arrays

# Define the 2 project IDs
# I assume the same user has access to both projects
OLD_PROJECT=INSERT_OLD_PROJECT_ID;
NEW_PROJECT=INSERT_NEW_PROJECT_ID;

# Maintain a dictionary of volume IDs to VM names so that we can attach to the correct VM later
# Detach the non-boot volumes from the VMs in the old project and transfer them to the new project
export OS_PROJECT_ID=$OLD_PROJECT;
VOLUMES=$(openstack volume list | egrep -v "ID|/dev/vda" | awk '{print $2}');
declare -A volumesToInstanceNames;
for VOLUME_ID in $VOLUMES;
    do
        export OS_PROJECT_ID=$OLD_PROJECT;
        echo $VOLUME_ID;
        SERVER_ID=$(openstack volume show $VOLUME_ID -f json | jq '.attachments[0].server_id' -r);
        echo $SERVER_ID;
        SERVER_NAME=$(openstack server show $SERVER_ID -f json | jq '. | .name' -r);
        echo $SERVER_NAME;
        volumesToInstanceNames[$VOLUME_ID]=$SERVER_NAME;
        openstack server remove volume $SERVER_ID $VOLUME_ID;
        VOLUME_TRANSFER_DATA=$(openstack volume transfer request create $VOLUME_ID -f json);
        VOLUME_TRANSFER_ID=$(echo $VOLUME_TRANSFER_DATA | jq '.id' -r);
        VOLUME_TRANSFER_AUTH_KEY=$(echo $VOLUME_TRANSFER_DATA | jq '.auth_key' -r);
        export OS_PROJECT_ID=$NEW_PROJECT;
        openstack volume transfer request accept --auth-key $VOLUME_TRANSFER_AUTH_KEY $VOLUME_TRANSFER_ID;
done

# Create a snapshot image of a VM and the delete the VM
# Create a new VM with the same name using the snapshot image and then delete the snapshot image
export OS_PROJECT_ID=$OLD_PROJECT;
INSTANCES=$(openstack server list | egrep -v ID | awk '{print $2}');
for INSTANCE_ID in $INSTANCES;
    do
        export OS_PROJECT_ID=$OLD_PROJECT;
        echo $INSTANCE_ID;
        INSTANCE_NAME=$(openstack server show $INSTANCE_ID -f json | jq '. | .name' -r);
        echo $INSTANCE_NAME;
        INSTANCE_FLAVOR=$(openstack server show $INSTANCE_ID -f json | jq '. | .flavor' -r | awk '{print $1}');
        echo $INSTANCE_FLAVOR;
        openstack server image create --name $INSTANCE_NAME $INSTANCE_ID;
        openstack server delete $INSTANCE_ID;
        export OS_PROJECT_ID=$NEW_PROJECT;
        openstack server create --flavor $INSTANCE_FLAVOR --image $INSTANCE_NAME $INSTANCE_NAME;
        openstack image delete $INSTANCE_NAME
done

# Attach the additional volumes that were transferred to the appropriate VM using the dictionary 
export OS_PROJECT_ID=$NEW_PROJECT;
for volume in ${!volumesToInstanceNames[@]};
    do
        echo ${volume} ${volumesToInstanceNames[${volume}]};
        openstack server add volume ${volumesToInstanceNames[${volume}]} $volume
done