Move Running VM Instance hosted on Google Compute Engine from One Project to Another Project

Steps :-

1) We need to make image of instance and copy it on Google Bucket. For this SSH into instance that you want to move.

Developer Console -> Compute Engine -> VM Instance -> SSH (any-instance)

2) Make temporary directory to copy the image of running instance
     sudo mkdir /mnt/tmp

3) Now list the drives

    ls -l /dev/disk/by-id/google-*

4) Check disk that you want to export to bucket (as we are moving instance and it is mostly installed on sda)

5) As we are going to create image on temporay folder so there must have enough space for new image file. For this we can mount non persistent disk if not enough space on prime drive (sda). In case you don’t have external disk you can create new one from Developer Console and attach it to running instance.

6)  The following command will format and mount the external non persistent disk (sdb)

   sudo /usr/share/google/safe_format_and_mount -m "mkfs.ext4 -F" /dev/sdb /mnt/tmp

7) Now using imagebunde package create image of vm instance

   sudo gcimagebundle -d /dev/sda -o /mnt/tmp/ --log_file=/tmp/abc.log

8) Now check the new tar file in location

   ls -l /mnt/tmp

9) To export this on Google Bucket we need to provide owner permission to service account. For this check the service account by this command

   curl "http://metadata/computeMetadata/v1/instance/service-   accounts/" -H "Metadata-Flavor:Google"

10) Now provide this service account the owner permission on Google Bucket from Developer Console

11) Change the permission of your newly created image (tar file) /mnt/tmp/d0e9184d539ae7c0274590942ef05af13450.image.tar.gz  using

   chmod u=rwx,g=rwx,o=rwx      mnt/tmp/d0e9184d539ae7c0274590942ef05af13450.image.tar.gz

12 ) Copy this tar file to Google Bucket using

   gsutil cp /mnt/tmp/d0e9184d539ae7c0274590942ef05af13450.image.tar.gz gs://bucket_name

13 ) Check this file on Google Bucket and share it publicly.

14) Now under new project create a new image from Developer Console

Developer Console -> Compure Engine -> Images -> New Image -> Select image source from google bucket and type

gs://bucket-name/filename  

15) Make an instance from Developer Console using this image created above.