Vultr Customer Portal

1. Navigate to Products and click Compute.
2. Click your target Vultr Cloud Compute instance to open its management page.
3. Navigate to the Settings tab.
4. Find and click Reinstall SSH Keys on the left navigation menu.
5. Select the target SSH key and click Reinstall.
6. Check the confirmation prompt and click Reinstall SSH Keys to apply the changes, reinstall the instance and enable the SSH key.

Terraform

1. Open your Terraform configuration for the existing Cloud Compute instance.
2. Update the ssh_key_ids in the instance resource to reference the new SSH key(s).
   terraform

   resource "vultr_ssh_key" "new_key" {
       name       = "mbp-ed25519"
       public_key = file("~/.ssh/id_ed25519.pub")
   }
   
   resource "vultr_instance" "cc" {
       # ...existing fields (region, plan, os_id, label, etc.)
   
       ssh_key_ids = [vultr_ssh_key.new_key.id]
   }
   

3. Apply the configuration and observe the following output:

   Apply complete! Resources: 0 added, 1 changed, 0 destroyed.