Terraform ECS Task Definition jsonencode issue - amazon-web-services

Question

I get this error when applying terraform. It's clearly something wrong with my env_Vars. I've tried making name and value in quotes or without.
Error: ECS Task Definition container_definitions is invalid: Error
decoding JSON: json: cannot unmarshal number into Go struct field
KeyValuePair.Environment.Value of type string
locals:
locals {
task_name = "${var.project_name}-${var.environment}-pgadmin"
env_vars = [
{
name = "ENV",
value = var.environment
},
{
name = "POSTGRES_HOST",
value = module.rds.db_address
},
{
name = "POSTGRES_USER",
value = module.rds.db_username
},
{
name = "POSTGRES_PORT",
value = module.rdsdb_port
}
]
}
task def template:
data "template_file" "task-definition" {
template = file("${path.module}/container_definition_template.json.tpl")
vars = {
container_name = local.task_name
container_image = "dpage/pgadmin4"
container_port = 3001
env_variables = jsonencode(local.env_vars)
secrets = jsonencode(local.secrets)
}
}
Task def:
resource "aws_ecs_task_definition" "pgadmin_task_definition" {
family = local.task_name
container_definitions = data.template_file.task-definition.rendered
task_role_arn = aws_iam_role.ecsTaskRole.arn
network_mode = "awsvpc"
cpu = 1024
memory = 2048
requires_compatibilities = ["FARGATE"]
execution_role_arn = aws_iam_role.ecsTaskExecutionRole.arn
}
actual json template is :
[
{
"name": "${container_name}",
"image": "${container_image}",
"startTimeout": 120,
"logConfiguration": {
"logDriver": "awslogs",
"options": {
"awslogs-group": "${aws_logs_group}",
"awslogs-region": "${aws_region}",
"awslogs-stream-prefix": "${aws_log_stream_prefix}"
}
},
"environment": ${env_variables},
"secrets": ${secrets},
"portMappings": [
{
"containerPort": ${container_port},
"hostPort": ${container_port}
}
]
}
]

Answer 1

I think this happens becuase module.rdsdb_port is number in local.env_vars, not string. You can try with:
value = tostring(module.rdsdb_port)