In an ECS task definition, you can set:

"ephemeralStorage": {
   "sizeInGiB": 200
}

yeah, you can add that to the task definition in work pool template

@Kevin Grismore thanks! Perhaps a dense question: I'm editing the work pool in the UI and I don't see this option in the base job template?

under the advanced tab, you can edit the json. you'll need to add two things: the bit I shared above in the place it needs to go in the templated task definition, and an entry in the

variables

object with a name and type so it gets picked up as a job_variable. once you do that it'll show up in the defaults tab for the work pool too

Okay, thanks!

I suppose these messages may disappear soon but I'll close the loop to clarify for anyone else who happens to be interested: The ephemeral storage argument goes under "variables" -> "properties" as seen above:

"variables": {
  "properties": {
    "ephemeral_storage": {
      "type": "integer",
      "title": "Ephemeral Storage (GiB)",
      "default": 21,
      "description": "..."
    },
    ...
  },
  ...
},

I chose

21

for the default since I got this boto3 error logged when I tried the default of 20:

Flow run could not be submitted to infrastructure: An error occurred (ClientException) when calling the RegisterTaskDefinition operation: EphemeralStorage size should be at least 21
01:56:24 PM
prefect_cloud.push_work_pool

The argument gets plugged in under "job_configuration" -> "task_definition" within "ephemeralStorage" -> "sizeInGiB":

"job_configuration": {
    ...
    "task_definition": {
      ...
      "ephemeralStorage": {
        "sizeInGiB": "{{ ephemeral_storage }}"
      },
      ...
    },
 }