If you are using the AMI installation method for Private Terraform Enterprise (PTFE), the default and recommended instance type is an
m4.2xlarge. However, larger instance types may be necessary if a large number of Terraform runs are being processed simultaneously, such as an
m5 instance types are not supported, because they expose EBS volumes as NVMe block devices, which PTFE cannot recognize and attach. If this instance type is used, install will hang with a message such as:
Mar 28 14:07:40 tfe init-zfs: 2018-03-28T14:07:40.884Z [DEBUG] waiting for devices to attach: devices="[de df]"
If this occurs, abort the installation and return to an
m4 or other supported instance type.