What are the steps to create and mount a persistent disk in Google Cloud Platform (GCP)?
To create and mount a persistent disk in Google Cloud Platform (GCP), you need to follow a series of steps that involve configuring the disk, creating an instance, and attaching the disk to the instance. In this answer, I will provide you with a detailed and comprehensive explanation of each step, along with examples where relevant.
Step 1: Create a persistent disk
1. Open the GCP Console and navigate to the Compute Engine section.
2. Click on "Disks" in the left-hand menu.
3. Click the "Create" button to create a new disk.
4. Specify the disk name, size, and type. You can choose between Standard Persistent Disk (HDD) or SSD Persistent Disk (SSD) based on your requirements.
5. Select the region and zone where you want the disk to be located.
6. Click "Create" to create the persistent disk.
Example: Let's say you want to create a 100GB SSD persistent disk named "my-disk" in the us-central1 region and us-central1-a zone. You would specify these details during the disk creation process.
Step 2: Create an instance
1. In the GCP Console, navigate to the Compute Engine section.
2. Click on "VM instances" in the left-hand menu.
3. Click the "Create" button to create a new instance.
4. Specify the instance name, region, zone, machine type, and other necessary details.
5. Under the "Boot disk" section, select "Change" and choose the operating system and boot disk size.
6. Click "Create" to create the instance.
Example: Let's assume you want to create an instance named "my-instance" in the us-central1 region and us-central1-a zone. You would select the appropriate machine type and specify the necessary boot disk details during the instance creation process.
Step 3: Attach the persistent disk to the instance
1. In the GCP Console, navigate to the Compute Engine section.
2. Click on "Disks" in the left-hand menu.
3. Locate the persistent disk you want to attach and click on its name.
4. Click the "Create attachment" button.
5. Select the instance you created in Step 2 from the drop-down menu.
6. Specify the device name for the disk attachment.
7. Click "Create" to attach the persistent disk to the instance.
Example: Assuming you have created an instance named "my-instance" and a persistent disk named "my-disk," you would select "my-instance" from the drop-down menu and specify the device name (e.g., /dev/sdb) during the attachment creation process.
Step 4: Mount the persistent disk in the instance
1. SSH into the instance by clicking the SSH button next to the instance name in the VM instances page.
2. Run the following command to list the available disks:
ls /dev/disk/by-id/
3. Identify the disk you attached in Step 3 based on its device name.
4. Create a directory where you want to mount the disk:
sudo mkdir /mnt/my-disk
5. Mount the disk to the directory:
sudo mount /dev/sdb1 /mnt/my-disk
Example: Assuming you attached the persistent disk as /dev/sdb and want to mount it to the /mnt/my-disk directory, you would run the above commands accordingly.
After completing these steps, the persistent disk will be successfully created and mounted in your GCP instance.
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