GCP: Tips

rsync to compute instance

cat ~/.config/gcloud-compute-ssh

#!/bin/sh
host="$1"
shift
exec gcloud compute ssh "$host" -- "$@"

Remember to make the file executable.

chmod +x ~/.config/gcloud-compute-ssh

Now you can rsync to your compute as follows

rsync -e ~/.config/gcloud-compute-ssh -r ./mydir/ <compute-instance-id>:/path/to/sync/to

Run a command in remote GCE instance

gcloud compute ssh <instance-id> -- 'cp /path/to/source /path/to/dest '

Google Source Repository Git Access

Add your keys here

And in your ~/.gitconfig file, add following

[credential "https://source.developers.google.com"]
    helper = gcloud.sh

For those who installed google-cloud-sdk with Homebrew, this should be gcloud. See this SO answer for more

Machine Types

f1-micro
g1-small
n1-standard-1

Duplicate images across projects

gcloud compute --project=<destination-project-id> images create <destination-image-name> --source-image=<source-image-name> --source-image-project=<source-project-id>

Access images across projects

Access image that belongs to project A from project B

Get the address of Service Account from project B
Go to Project B IAM & admin > IAM from menu
Click Add button on top left.
Paste the SA address as Member
Select Compute Engine > Compute Image User

gcloud projects add-iam-policy-binding [PROJECT_ID] \
    --member serviceAccount:[SERVICE_ACCOUNT_EMAIL] --role roles/compute.imageUser

If you learn better from videos, try this

Get Internal DNS address of a GCE instance

curl "http://metadata.google.internal/computeMetadata/v1/instance/hostname" \
    -H "Metadata-Flavor: Google"

Authenticate with service account

gcloud auth activate-service-account --key-file="/path/to/key_file.json"

All about roles

Complete list of GCP roles and their permissions.