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test: use correct pool allocation for spot strategy (#20593)

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Determine the allocation pool size for the spot fleet by the allocation
strategy. This allows us to ensure a consistent attribute plan during
re-runs which avoid rebuilding the target fleets.

Signed-off-by: Ryan Cragun <me@ryan.ec>
This commit is contained in:
Ryan Cragun
2023-05-16 14:00:20 -06:00
committed by GitHub
parent ba1633f81c
commit cb23fcd83f
1 changed files with 11 additions and 7 deletions
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10
enos/modules/target_ec2_spot_fleet/main.tf
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@@ -161,6 +161,7 @@ resource "random_string" "unique_id" {
}
locals {
allocation_strategy = "lowestPrice"
instances = toset([for idx in range(var.instance_count) : tostring(idx)])
cluster_name = coalesce(var.cluster_name, random_string.cluster_name.result)
name_prefix = "${var.project_name}-${local.cluster_name}-${random_string.unique_id.result}"
@@ -314,11 +315,14 @@ resource "aws_launch_template" "target" {
# Unless we see capacity issues or instances being shut down then we ought to
# stick with that strategy.
resource "aws_spot_fleet_request" "targets" {
allocation_strategy = "lowestPrice"
allocation_strategy = local.allocation_strategy
fleet_type = "request"
iam_fleet_role = aws_iam_role.fleet.arn
// Set this to zero so re-runs don't plan for replacement
instance_pools_to_use_count = 0
// The instance_pools_to_use_count is only valid for the allocation_strategy
// lowestPrice. When we are using that strategy we'll want to always set it
// to 1 to avoid rebuilding the fleet on a re-run. For any other strategy
// set it to zero to avoid rebuilding the fleet on a re-run.
instance_pools_to_use_count = local.allocation_strategy == "lowestPrice" ? 1 : 0
target_capacity = var.instance_count
terminate_instances_on_delete = true
wait_for_fulfillment = true