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cloud engineer

Migrate VM to Other Network

Here’s how to move a VM to another network.

Stop the VM.

gcloud compute instances stop server-name \
--zone=us-central1-c \
--project project-id

Migrate the VM. Use self link for network and subnetwork.

gcloud compute instances network-interfaces update server-name \
--zone=us-central1-c \
--network-interface=nic0 \
--network=your-network \
--subnetwork=your-sub-network \
--project project-id

Start the VM.

gcloud compute instances start server-name \
--zone=us-central1-c \
--project project-id

GCP Move Instance to Another Zone

Moving a GCP instance to another zone is actually much simpler than initially thought. It’s just a single gcloud command.

gcloud compute instances move instance-name \
--zone us-central1-a \
--destination-zone us-central1-b

A few details about moving to another zone.

  • VM has to be running.
  • You may get a new internal or external IP address
  • Local SSDs are ephemeral, so you can’t move them.
  • When moving between regions, you may have to select a subnetwork.
  • You may have to change GPUs available in the destination if you use them.

GCP Move Instance to Another Project

Here’s how to copy a disk from one project to another.

gcloud compute disks create lamp-server \
--source-snapshot https://www.googleapis.com/compute/v1/projects/project-id/global/snapshots/lamp-server \
--project next-project-id \
--zone us-central1-a

Once all the disks are copied. You can create a snapshot of the boot.

gcloud compute disks snapshot lamp-server

Create an instance from snapshot.

gcloud compute disks create "hostname-boot" \
--project "project-id" \
--zone "us-central1-a" \
--source-snapshot "snapshot-name" \
--type "pd-standard" \
--size "100"