Question

Volume data not persisting with Terraform

Posted April 16, 2020 826 views
DigitalOcean Volumes

Hi,

I’m trying to achieve a setup whereby i can tear down a droplet and reattach it to a volume whenever i need to update code etc.

But after i re attach the volume to the droplet , all the data is gone.
here is my config:


resource "digitalocean_volume" "main-api" {
    region = "lon1"
    name = "ms-vol-two"
    size = 2
    initial_filesystem_type = "ext4"
    description = "File storage for postgres"
}

resource "digitalocean_droplet" "main-api" {
    image = "docker-18-04"
    name = "main-api"
    region = "lon1"
    size = "512mb"
    private_networking = true
    ssh_keys = [
        var.ssh_fingerprint
    ]
 ... etc

}

resource "digitalocean_volume_attachment" "main-api" {
    droplet_id = digitalocean_droplet.main-api.id
    volume_id = digitalocean_volume.main-api.id
}

When i SSH into the droplet i /mnt/msvoltwo exists but has no data. I can create data there and it saves normally. But when i destroy the main-api droplet and then re run with terraform apply the droplet only has /mnt/msvoltwo but the data is no longer there..?
Thanks, Joe.

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1 answer

Sorry the paths above should be:

/mnt/ms_vol_two