314 lines
11 KiB
HCL
314 lines
11 KiB
HCL
resource "aws_cloudwatch_metric_alarm" "ec2-StatusCheckFailed_System" {
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alarm_name = "${var.cw-alarm-prefix}:EC2:StatusCheckFailed_System:${var.ec2-instance-id}"
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comparison_operator = "GreaterThanThreshold"
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evaluation_periods = "1"
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metric_name = "StatusCheckFailed_System"
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period = "300"
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statistic = "Maximum"
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threshold = 0
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alarm_description = "EC2:StatusCheckFailed_System"
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namespace = "AWS/EC2"
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insufficient_data_actions = []
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actions_enabled = var.actions-enabled
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alarm_actions = [var.sns-targets.alarm-actions-emergency]
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ok_actions = [var.sns-targets.alarm-actions-emergency]
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dimensions = {
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InstanceId = var.ec2-instance-id
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}
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tags = var.default-tags
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lifecycle {
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ignore_changes = [tags]
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}
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}
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resource "aws_cloudwatch_metric_alarm" "ec2-StatusCheckFailed_Instance" {
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alarm_name = "${var.cw-alarm-prefix}:EC2:StatusCheckFailed_Instance:${var.ec2-instance-id}"
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comparison_operator = "GreaterThanThreshold"
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evaluation_periods = "1"
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metric_name = "StatusCheckFailed_Instance"
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period = "300"
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statistic = "Maximum"
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threshold = 0
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alarm_description = "EC2:StatusCheckFailed_Instance"
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namespace = "AWS/EC2"
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insufficient_data_actions = []
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actions_enabled = var.actions-enabled
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alarm_actions = [var.sns-targets.alarm-actions-emergency]
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ok_actions = [var.sns-targets.alarm-actions-emergency]
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dimensions = {
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InstanceId = var.ec2-instance-id
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}
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tags = var.default-tags
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lifecycle {
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ignore_changes = [tags]
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}
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}
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resource "aws_cloudwatch_metric_alarm" "ec2-CPUUtilization" {
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alarm_name = "${var.cw-alarm-prefix}:EC2:CPUUtilization:${var.ec2-instance-id}"
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comparison_operator = "GreaterThanThreshold"
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evaluation_periods = "6"
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metric_name = "CPUUtilization"
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period = "300"
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statistic = "Average"
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threshold = var.threshold-CPUUtilization
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alarm_description = "EC2:CPUUtilization"
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namespace = "AWS/EC2"
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insufficient_data_actions = []
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actions_enabled = var.actions-enabled
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alarm_actions = [var.sns-targets.alarm-actions-urgent]
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ok_actions = [var.sns-targets.alarm-actions-urgent]
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treat_missing_data = "notBreaching"
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dimensions = {
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InstanceId = var.ec2-instance-id
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}
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tags = var.default-tags
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lifecycle {
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ignore_changes = [tags]
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}
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}
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# cwagent metrics
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data "aws_instance" "ec2-instance" {
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instance_id = var.ec2-instance-id
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}
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# get instance OS
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data "external" "ec2-os" {
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program = ["bash", "${path.module}/get-os-platform.sh"]
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query = {
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input = var.ec2-instance-id
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}
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}
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# Linux specific checks
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resource "aws_cloudwatch_metric_alarm" "ec2-mem_free" {
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count = data.external.ec2-os.result.os == "Linux" ? 1 : 0
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alarm_name = "${var.cw-alarm-prefix}:EC2:mem_free:${var.ec2-instance-id}"
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comparison_operator = "LessThanThreshold"
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evaluation_periods = "2"
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metric_name = "mem_free"
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period = "900"
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statistic = "Average"
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threshold = var.threshold-mem_free
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alarm_description = "EC2:mem_free"
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namespace = "CWAgent"
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insufficient_data_actions = []
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actions_enabled = var.actions-enabled
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alarm_actions = [var.sns-targets.alarm-actions-standard]
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ok_actions = [var.sns-targets.alarm-actions-standard]
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dimensions = {
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InstanceId = var.ec2-instance-id
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ImageId = data.aws_instance.ec2-instance.ami
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InstanceType = data.aws_instance.ec2-instance.instance_type
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}
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tags = var.default-tags
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lifecycle {
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ignore_changes = [tags]
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}
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}
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resource "aws_cloudwatch_metric_alarm" "ec2-swap_free" {
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count = data.external.ec2-os.result.os == "Linux" ? 1 : 0
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# zero is fine as most ec2 instances are deployed without any swap
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alarm_name = "${var.cw-alarm-prefix}:EC2:swap_free:${var.ec2-instance-id}"
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comparison_operator = "LessThanThreshold"
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evaluation_periods = "2"
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threshold = var.threshold-swap_free
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alarm_description = "EC2:swap_free"
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insufficient_data_actions = []
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actions_enabled = var.actions-enabled
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alarm_actions = [var.sns-targets.alarm-actions-standard]
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ok_actions = [var.sns-targets.alarm-actions-standard]
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metric_query {
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id = "m1"
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metric {
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metric_name = "swap_free"
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namespace = "CWAgent"
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period = 900
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stat = "Average"
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dimensions = {
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InstanceId = var.ec2-instance-id
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ImageId = data.aws_instance.ec2-instance.ami
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InstanceType = data.aws_instance.ec2-instance.instance_type
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}
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}
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}
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metric_query {
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id = "e1"
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expression = "IF(m1==0, ${var.threshold-swap_free}, m1)"
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label = "swap_free_if_not_zero"
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return_data = "true"
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}
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tags = var.default-tags
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lifecycle {
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ignore_changes = [tags]
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}
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}
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# get device dimension from cw metrics
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/*
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data "external" "disk-device" {
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program = ["bash", "${path.module}/get-cwagent-device.sh"]
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query = {
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input = var.ec2-instance-id
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}
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}
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*/
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data "external" "cw-dimensions" {
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program = ["bash", "${path.module}/get-cwagent-dimensions.sh"]
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query = {
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input = var.ec2-instance-id
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}
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}
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resource "aws_cloudwatch_metric_alarm" "ec2-disk_free" {
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count = data.external.ec2-os.result.os == "Linux" ? 1 : 0
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alarm_name = "${var.cw-alarm-prefix}:EC2:disk_free:${var.ec2-instance-id}"
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comparison_operator = "LessThanThreshold"
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evaluation_periods = "2"
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metric_name = "disk_free"
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period = "900"
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statistic = "Average"
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threshold = var.threshold-disk_free
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alarm_description = "EC2:disk_free"
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namespace = "CWAgent"
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insufficient_data_actions = []
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actions_enabled = var.actions-enabled
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alarm_actions = [var.sns-targets.alarm-actions-urgent]
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ok_actions = [var.sns-targets.alarm-actions-urgent]
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dimensions = data.external.cw-dimensions.result
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/*
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dimensions = {
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InstanceId = var.ec2-instance-id
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ImageId = data.aws_instance.ec2-instance.ami
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InstanceType = data.aws_instance.ec2-instance.instance_type
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device = data.external.disk-device.result.device
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fstype = data.external.disk-device.result.fstype
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path = "/"
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}
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*/
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tags = var.default-tags
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lifecycle {
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ignore_changes = [tags]
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}
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}
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resource "aws_cloudwatch_metric_alarm" "ec2-disk_inodes_free" {
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count = data.external.ec2-os.result.os == "Linux" ? 1 : 0
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alarm_name = "${var.cw-alarm-prefix}:EC2:disk_inodes_free:${var.ec2-instance-id}"
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comparison_operator = "LessThanThreshold"
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evaluation_periods = "2"
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metric_name = "disk_inodes_free"
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period = "300"
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statistic = "Average"
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threshold = var.threshold-disk_inodes_free
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alarm_description = "EC2:disk_inodes_free"
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namespace = "CWAgent"
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insufficient_data_actions = []
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actions_enabled = var.actions-enabled
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alarm_actions = [var.sns-targets.alarm-actions-urgent]
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ok_actions = [var.sns-targets.alarm-actions-urgent]
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dimensions = data.external.cw-dimensions.result
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/*
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dimensions = {
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InstanceId = var.ec2-instance-id
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ImageId = data.aws_instance.ec2-instance.ami
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InstanceType = data.aws_instance.ec2-instance.instance_type
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device = data.external.disk-device.result.device
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fstype = data.external.disk-device.result.fstype
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path = "/"
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}
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*/
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tags = var.default-tags
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lifecycle {
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ignore_changes = [tags]
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}
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}
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resource "aws_cloudwatch_metric_alarm" "ec2-processes_total" {
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count = data.external.ec2-os.result.os == "Linux" ? 1 : 0
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alarm_name = "${var.cw-alarm-prefix}:EC2:processes_total:${var.ec2-instance-id}"
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comparison_operator = "GreaterThanThreshold"
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evaluation_periods = "2"
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metric_name = "processes_total"
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period = "900"
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statistic = "Average"
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threshold = var.threshold-processes_total
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alarm_description = "EC2:processes_total"
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namespace = "CWAgent"
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insufficient_data_actions = []
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actions_enabled = var.actions-enabled
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alarm_actions = [var.sns-targets.alarm-actions-urgent]
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ok_actions = [var.sns-targets.alarm-actions-urgent]
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dimensions = {
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InstanceId = var.ec2-instance-id
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ImageId = data.aws_instance.ec2-instance.ami
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InstanceType = data.aws_instance.ec2-instance.instance_type
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}
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tags = var.default-tags
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lifecycle {
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ignore_changes = [tags]
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}
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}
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# Windows specific checks
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resource "aws_cloudwatch_metric_alarm" "ec2-MemoryCommittedPct" {
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count = data.external.ec2-os.result.os == "Windows" ? 1 : 0
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alarm_name = "${var.cw-alarm-prefix}:EC2:MemoryCommittedPct:${var.ec2-instance-id}"
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comparison_operator = "GreaterThanThreshold"
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evaluation_periods = "2"
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metric_name = "Memory % Committed Bytes In Use"
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period = "900"
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statistic = "Average"
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threshold = var.threshold-MemoryCommittedPct
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alarm_description = "EC2:MemoryCommittedBytes"
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namespace = "CWAgent"
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insufficient_data_actions = []
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actions_enabled = var.actions-enabled
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alarm_actions = [var.sns-targets.alarm-actions-urgent]
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ok_actions = [var.sns-targets.alarm-actions-urgent]
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dimensions = {
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objectname = "Memory"
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InstanceId = var.ec2-instance-id
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ImageId = data.aws_instance.ec2-instance.ami
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InstanceType = data.aws_instance.ec2-instance.instance_type
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}
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tags = var.default-tags
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lifecycle {
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ignore_changes = [tags]
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}
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}
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resource "aws_cloudwatch_metric_alarm" "ec2-OsDiskFreePct" {
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count = data.external.ec2-os.result.os == "Windows" ? 1 : 0
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alarm_name = "${var.cw-alarm-prefix}:EC2:OsDiskFreePct:${var.ec2-instance-id}"
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comparison_operator = "LessThanThreshold"
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evaluation_periods = "2"
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metric_name = "LogicalDisk % Free Space"
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period = "300"
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statistic = "Average"
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threshold = var.threshold-LogicalDiskFreePct
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alarm_description = "EC2:OsDiskFreePct"
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namespace = "CWAgent"
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insufficient_data_actions = []
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actions_enabled = var.actions-enabled
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alarm_actions = [var.sns-targets.alarm-actions-urgent]
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ok_actions = [var.sns-targets.alarm-actions-urgent]
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dimensions = {
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instance = "C:"
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objectname = "LogicalDisk"
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InstanceId = var.ec2-instance-id
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ImageId = data.aws_instance.ec2-instance.ami
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InstanceType = data.aws_instance.ec2-instance.instance_type
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}
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tags = var.default-tags
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lifecycle {
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ignore_changes = [tags]
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}
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} |