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GCP Terraform Second Drive

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How to add a second drive on GCP Compute Engine using Terraform.

provider "google" {
  project = "your-project-id"
  zone    = "us-central1-c"
}
 
resource "google_compute_disk" "data-drive" {
  name = "data-drive"
  type = "pd-standard"
  zone = "us-central1-c"
  size = "20"
}
 
resource "google_compute_attached_disk" "attach-data-drive" {
  count    = 1
  disk     = google_compute_disk.data-drive.id
  instance = google_compute_instance.test.id
}
 
resource "google_compute_instance" "test" {
  name         = "test"
  machine_type = "e2-micro"
 
  boot_disk {
    initialize_params {
      image = "rocky-linux-cloud/rocky-linux-8"
    }
  }
 
  scheduling {
    preemptible       = true
    automatic_restart = false
  }
  network_interface {
    network = "default"
    access_config {
    }
  }
}

GCP Create Scheduled Snapshots

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How to create scheduled snapshots in GCP.

gcloud compute resource-policies create snapshot-schedule hourly \
--description "my hourly schedule" \
--max-retention-days 7 \
--start-time 00:00 \
--hourly-schedule 1 \
--region us-central1 \
--on-source-disk-delete keep-auto-snapshots \
--storage-location US

Add snapshot schedule to a disk.

gcloud compute disks add-resource-policies disk-name \
--resource-policies hourly \
--zone us-central1-a
gcloud compute disks create disk-name \
--resource-policies hourly \
--zone us-central1-a

List snapshot schedules.

gcloud compute resource-policies list

Describe snapshot schedule.

gcloud compute resource-policies describe hourly

GCP Compute add startup-script to metadata

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How to add a startup-script to metadata. The script executes every time VM is started.

gcloud compute instances add-metadata instance-name \
--project your-project-id \
--zone us-central1-c \
--metadata=startup-script='#! /bin/bash
sudo -i
echo "Time: $(date)" >> /tmp/date.txt'

GCP CVS Mount Instructions

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Here are the mount instructions for NFS and SMB drives for GCP Netapp CVS.

NFS

sudo yum install -y nfs-utils
sudo apt-get install nfs-common
sudo mkdir /condescending-sharp-hugle
sudo mount -t nfs -o rw,hard,rsize=65536,wsize=65536,vers=3,tcp 10.49.253.6:/condescending-sharp-hugle /condescending-sharp-hugle

SMB

Mapping your network drive
1. Click the Start button and then click on Computer.
2. Click Map Network Drive.
3. In the Drive list, click any available drive letter.
4. In the folder box, type \\shared.mydomain.com\myshare.
To connect every time you log on to your computer, select the Reconnect at sign-in check box.
\\shared.mydomain.com\myshare
5. Click Finish.

Metadata URL

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Here’s the metadata URLs for both AWS and GCP.

curl http://169.254.169.254/computeMetadata/v1/ -H "Metadata-Flavor: Google"
curl http://169.254.169.254/latest/meta-data/

GCP List Disk Types

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To list all disk types available in your project in all regions. Result is truncated.

$ gcloud compute disk-types list
NAME         ZONE                       VALID_DISK_SIZES
pd-balanced                             10GB-65536GB
pd-ssd                                  10GB-65536GB
pd-standard                             200GB-65536GB
pd-balanced                             10GB-65536GB
...

To list a specific region, use the filter option.

$ gcloud compute disk-types list --filter="zone~'us-central1'"
NAME         ZONE           VALID_DISK_SIZES
pd-balanced  us-central1-a  10GB-65536GB
pd-extreme   us-central1-a  500GB-65536GB
pd-ssd       us-central1-a  10GB-65536GB
pd-standard  us-central1-a  10GB-65536GB
pd-balanced  us-central1-b  10GB-65536GB
pd-extreme   us-central1-b  500GB-65536GB
pd-ssd       us-central1-b  10GB-65536GB
pd-standard  us-central1-b  10GB-65536GB
pd-balanced  us-central1-c  10GB-65536GB
pd-extreme   us-central1-c  500GB-65536GB
pd-ssd       us-central1-c  10GB-65536GB
pd-standard  us-central1-c  10GB-65536GB
pd-balanced  us-central1-f  10GB-65536GB
pd-extreme   us-central1-f  500GB-65536GB
pd-ssd       us-central1-f  10GB-65536GB
pd-standard  us-central1-f  10GB-65536GB
pd-balanced  us-central1-d  10GB-65536GB
pd-extreme   us-central1-d  500GB-65536GB
pd-ssd       us-central1-d  10GB-65536GB
pd-standard  us-central1-d  10GB-65536GB

To a list a specific region and local SSDs only.

gcloud compute disk-types list --filter="zone~'us-central1' AND name~'local-'"
NAME       ZONE           VALID_DISK_SIZES
local-ssd  us-central1-a  375GB-375GB
local-ssd  us-central1-b  375GB-375GB
local-ssd  us-central1-c  375GB-375GB
local-ssd  us-central1-f  375GB-375GB
local-ssd  us-central1-d  375GB-375GB

GCS Fuse

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GCS Fuse allows you to mount a Google bucket as a file system. It’s similar to S3FS.

Setup repo

sudo tee /etc/yum.repos.d/gcsfuse.repo > /dev/null <<EOF
[gcsfuse]
name=gcsfuse (packages.cloud.google.com)
baseurl=https://packages.cloud.google.com/yum/repos/gcsfuse-el7-x86_64
enabled=1
gpgcheck=1
repo_gpgcheck=0
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg
       https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
EOF

Yum install

sudo yum install gcsfuse

Login to GCP and mount. Run as a user and not root.

gcloud auth login
gcsfuse my-bucket /path/to/mount

Unmount

fusermount -u /path/to/mount