Changing Storage class from Multi-Regional to Coldline in Google Cloud Platform - google-cloud-platform

Question

I just finished my 1 year free trial with Google Cloud Platform and I am now being billed.
When I set my first project up, it looks like I set it up as Multi-Regional. I would only use the Google Cloud Storage in the event of a catastrophic failure in my home where i lose data on both internal and external hard drives (ie. fire, etc) . I believe for this type of backup, I only need Coldline storage. I did change my project over to Coldline but it looks like it only changes new data, not the original stored data because I am still being charged for Multi-regional storage.
From what I understand, I have to change the Object Storage Class either by overwriting the data using "gsutil rewrite -s [STORAGE_CLASS] gs://[PATH_TO_OBJECT]" or by Object Lifestyle Management. I could not figure out how to do either, so I need help doing this (I am not even sure where to type these commands or which approach to use (I am not a programmer!!)).
I also saw in another post that my gsutil command needs to up to date 4.22 or higher. How do I check this?? I also saw in this post that the [PATH_TO_OBJECT] is My Bucket. I see a Project Name, Project ID, and Project number. Which of these (if any) are used in that field for My Bucket?
Thank you for any help

Answer 1

I also saw in another post that my gsutil command needs to up to date
4.22 or higher. How do I check this??
Get the gsutil version:
gsutil version
Update the Cloud SDK which includes gsutil:
Windows:
Open a command prompt with Administrator rights
gcloud components update
Linux:
gcloud components update
I see a Project Name, Project ID, and Project number. Which of these
(if any) are used in that field for My Bucket.
Use the PROJECT_ID. To get a list of the projects that you have access to. This command will list each project.
gcloud projects list
To see which is your default project:
gcloud config list project
If the default project is blank or the wrong one, use the following command.
To set the default project:
gcloud config set project [PROJECT_ID]
From what I understand, I have to change the Object Storage Class
either my overwriting the data
Assuming your bucket name is mybucket.
STEP 1: Change the default storage class for the bucket:
gsutil defstorageclass set coldline gs://mybucket
STEP 2: Change the storage class for each object manually. This is an option if you want to just select a few files.
gsutil rewrite -s coldline gs://mybucket/objectname
STEP 3: Verify the existing lifecycle policy. Change step 4 accordingly if an existing policy exists.
gsutil lifecycle get gs://mybucket
STEP 4: Change the lifecycle of the bucket. This policy will move all files older than 7 days to coldline storage.
POLICY (write to lifecycle.json):
{
"lifecycle": {
"rule": [
{
"action": {
"type": "SetStorageClass",
"storageClass": "COLDLINE"
},
"condition": {
"age": 7,
"matchesStorageClass": [
"MULTI_REGIONAL",
"STANDARD",
"DURABLE_REDUCED_AVAILABILITY"
]
}
}
]
}
}
Command:
gsutil lifecycle set lifecycle.json gs://mybucket