Tag: gcp

GCP Add IAM Role to Service Account

Here’s how to add an IAM role to a GCP Service Account.

gcloud projects add-iam-policy-binding your-project-id \
--member serviceAccount:service-account-name@your-project-id.iam.gserviceaccount.com \
--role roles/storage.objectAdmin

GCP SDK Update

Here’s how to update your Google Cloud Platform SDK (Software Development Kit) which is aka the CLI for interacting with Google’s API.

Get Current Version

gcloud version

Get the Components List

gcloud components list

Update

gcloud components update

GCloud Interactive Shell

If you already have Google SDK installed, you can activate GCloud Interactive Shell, which is still in beta by the way, by typing the following command from the Google SDK terminal.

gcloud beta interactive

The interactive shell environment has auto-completion. It shows you who’s logged in and which project you are currently set in. To exit the interactive shell, just Press F9 to quit.

CodeIgniter Base URL

I have a CodeIgniter dev site in Google Cloud. The instance obtains a new IP address at every start. You can set the base URL to a domain or IP address in the “/application/config/config.php” file. Since it’s only a dev box, I don’t have a domain assigned. It’s accessible via IP address only which changes every time the instance is started. So here’s the workaround. I added some extra code in the config file to obtain the external IP address.

$realIP = file_get_contents("http://ipecho.net/plain");
$config['base_url'] = 'http://'.$realIP;

The code is using a service from ipecho.net which returns your external IP address. Works like a charm!

GCP Create Instance From Snapshot

There are two steps in creating an instance from a snapshot.

  1. Create a disk from snapshot
  2. Create an instance from the disk

Create a disk from snapshot.

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

Create an instance from disk.

gcloud beta compute instances create hostname \
--project=project-id \
--zone=us-central1-a \
--subnet=your-subnetwork \
--machine-type=n1-standard-1 \
--no-address \
--maintenance-policy=MIGRATE \
--service-account=service.account@developer.gserviceaccount.com \
--disk=name=instance-1,device-name=instance-1,mode=rw,boot=yes,auto-delete=yes \
--reservation-affinity=any \
--labels=builtby=john.doe \
--tags=web \
--scopes= \
--metadata=