如何解决遍历服务器列表并为每个服务器创建警报?
我有一个服务器列表,如下所示,我需要为其创建 cloudwatch 警报。我似乎找不到很多这样的例子。
variable "vms" {
type = list
default = ["server1","server2","server3"]
}
我想将 for_each 用于我的 cloudwatch 警报:
resource "aws_cloudwatch_metric_alarm" "ec2-warning" {
count = length(var.vms)
for_each = {for vms in var.vms: vm.host => vms}
alarm_name =
comparison_operator = "GreaterThanThreshold"
evaluation_periods = "1"
metric_name = "disk_used_percent"
namespace = "CWAgent"
dimensions = {
path = "/"
fstype = "xfs"
host = data.aws_instance.myec2.private_
dnsdevice = "xvda1"
}
编辑:我相信我需要做这样的事情
locals {
my_list = [
"server1","server3","server4"
]
}
resource "aws_cloudwatch_metric_alarm" "ec2-disk-space-warning-for" {
for_each = toset(local.my_list)
alarm_name = {each.key}-"ec2-disk-space-warning"
comparison_operator = "GreaterThanThreshold"
evaluation_periods = "1"
metric_name = "disk_used_percent"
namespace = "CWAgent"
dimensions = {
path = "/"
fstype = "xfs"
host = {each.key}
device = "xvda1"
}
解决方法
如果需要,您可以使用 var.vms
。不需要locals
。但是,在您第一次尝试时,您不能同时使用 count
和 for_each
。在您的第二次尝试中,您遗漏了一些参数(statistic
和 period
)并且错误地使用了 string interpolation。
因此,应尝试以下方法:
variable "vms" {
type = list
default = ["server1","server2","server3"]
}
resource "aws_cloudwatch_metric_alarm" "ec2-disk-space-warning-for" {
for_each = toset(var.vms)
alarm_name = "${each.key}-ec2-disk-space-warning"
comparison_operator = "GreaterThanThreshold"
evaluation_periods = "1"
metric_name = "disk_used_percent"
namespace = "CWAgent"
statistic = "Average"
period = 60
dimensions = {
path = "/"
fstype = "xfs"
host = each.key
device = "xvda1"
}
}
如果您的自定义指标不存在,警报将不起作用,但我假设这些指标正在运行且设置正确。
,这终于对我有用
locals {
my_list = [
"server1","server3","server4"
]
}
resource "aws_cloudwatch_metric_alarm" "ec2-disk-space-warning" {
for_each = toset(local.my_list)
alarm_name = "ec2-disk-space-warning-for-${each.key}"
comparison_operator = "GreaterThanThreshold"
evaluation_periods = "1"
metric_name = "disk_used_percent"
namespace = "CWAgent"
dimensions = {
path = "/"
fstype = "xfs"
host = each.key
device = "xvda1"
}
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