我正在尝试按如下方式创建云观察警报:
module "superb_queue_api-a" {
source = "../../Modules/Services"
no_of_inst = 1
ami_id = "${data.aws_ami.ubuntu.id}"
instance_type = "t2.micro"
subnets = "${data.terraform_remote_state.state_pull.prod-pvt-sub-a}"
key = "sup_queue_inst"
sec-group = ["${aws_security_group.ec2_sg.id}"]
tp = "${var.is_production ? true : false}"
instance-name = "sup-queue-api-a"
}
resource "aws_cloudwatch_metric_alarm" "queue_1" {
alarm_name = "sup-queue-api-a"
comparison_operator = "GreaterThanOrEqualToThreshold"
evaluation_periods = "1"
metric_name = "CPUUtilization"
namespace = "AWS/EC2"
period = "120"
statistic = "Average"
threshold = "90"
dimensions {
InstanceId = "${module.superb_queue_api-a.ec2-instance}"
}
alarm_description = "This metric monitors ec2 cpu utilization"
alarm_actions = ["${var.terraform_elb_name}"]
}
我有以下模块来旋转实例
resource "aws_instance" "ec2_instances" {
count = "${var.no_of_inst}"
#count = "${var.countt}"
ami = "${var.ami_id}"
instance_type = "${var.instance_type}"
#vpc_id = "${var.vpc}"
subnet_id = "${var.subnets}"
key_name = "${var.key}"
vpc_security_group_ids = ["${var.sec-group}"]
disable_api_termination = "${var.tp}"
root_block_device {
volume_size = 100
volume_type = "gp2"
}
tags {
Name = "${var.instance-name}"
}
}
output.tf具有以下内容
output "ec2-instance" {
value = "${aws_instance.ec2_instances.*.id}"
}
output "private_ip" {
value = "${aws_instance.ec2_instances.*.private_ip}"
}
我收到以下错误:
Error: Error running plan: 1 error(s) occurred:
* aws_cloudwatch_metric_alarm.queue_1: dimensions (InstanceId): '' expected type 'string', got unconvertible type '[]interface {}'
有人能帮助我吗?
答案 0 :(得分:2)
问题是module.superb_queue_api-a.ec2-instance是一个数组,因为该模块正在创建多个实例,模块的输出是一个包含所有实例的ID的数组。
我已经调整了代码,因此它为每个实例创建了一个警报:
resource "aws_cloudwatch_metric_alarm" "queue_1" {
count = "${length(module.superb_queue_api-a.ec2-instance)}"
alarm_name = "sup-queue-api-a-${module.superb_queue_api-a.ec2-instance[count.index]}"
comparison_operator = "GreaterThanOrEqualToThreshold"
evaluation_periods = "1"
metric_name = "CPUUtilization"
namespace = "AWS/EC2"
period = "120"
statistic = "Average"
threshold = "90"
dimensions {
InstanceId = "${module.superb_queue_api-a.ec2-instance[count.index]}"
}
alarm_description = "This metric monitors ec2 cpu utilization"
alarm_actions = ["${var.terraform_elb_name}"]
}