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Terraform Provisioner: Wait For ECS To Register With LB Before Destroying
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# Ref: https://github.com/terraform-providers/terraform-provider-aws/pull/3485#issuecomment-397918310 | |
resource "aws_ecs_service" "web" { | |
name = "web_service_${var.environment}_${replace(timestamp(), ":", "-")}" | |
cluster = aws_ecs_cluster.web.id | |
task_definition = aws_ecs_task_definition.web.arn | |
desired_count = 1 | |
force_new_deployment = true | |
load_balancer { | |
target_group_arn = data.aws_lb_target_group.web_ecs_arn.arn | |
container_name = "web" | |
container_port = 8000 | |
} | |
# Important! Wait till services are up and running before destroying | |
provisioner "local-exec" { | |
command = "aws ecs wait services-stable --services ${aws_ecs_service.web.name} --cluster ${aws_ecs_cluster.web.name} --region ${data.aws_region.current.name}" | |
} | |
provisioner "local-exec" { | |
command = "aws elbv2 wait target-in-service --target-group-arn ${data.aws_lb_target_group.web_ecs_arn.arn} --region ${data.aws_region.current.name}" | |
} | |
lifecycle { | |
create_before_destroy = true | |
} | |
} |
Author
melvinkcx
commented
Sep 18, 2020
•
resource "null_resource" "wait_for_service_deploy" {
triggers = {
ecs_service = aws_ecs_service.web.name
}
provisioner "local-exec" {
command = "aws ecs wait services-stable --services ${aws_ecs_service.web.name} --cluster ${aws_ecs_cluster.web.name} --region ${data.aws_region.current.name}"
}
}
resource "null_resource" "wait_for_service_lb_healthy" {
triggers = {
ecs_service = aws_ecs_service.web.name
service_stable = null_resource.wait_for_service_deploy.id
}
provisioner "local-exec" {
command = "aws elbv2 wait target-in-service --target-group-arn ${data.aws_lb_target_group.web_ecs_arn.arn} --region ${data.aws_region.current.name}"
}
}
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