Oracle Free Tier instance cannot boot

When you see the above problem, don’t be panic. I found a solution.

Solution

  1. terminate the current instance without delete the boot volume (recommend to back up)
  2. Go to the boot volume and choose “Create Instance” menu.
  3. Start VM.

It is not perfect way since you need to create a new instance and it changes the public IP but at least your service can run again.