feat: add CloudWatch Lambda function invocation alarms #706
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Add CloudWatch alarms for the following three functions: 1. form-archiver: expect 1 invocation per day. 2. nagware: expect 1 invocation on Tuesday, Thursday and Sunday. 3. response-archiver: expect 1 invocation per day
⚠ Terrform update availableTerraform: 1.8.5 (using 1.6.6)
Terragrunt: 0.59.5 (using 0.54.8) |
Staging: lambdas✅ Terraform Init: Plan: 0 to add, 0 to change, 0 to destroyShow summary
Show planChanges to Outputs:
+ lambda_form_archiver_function_name = "form-archiver"
+ lambda_nagware_function_name = "nagware"
+ lambda_response_archiver_function_name = "response-archiver"
You can apply this plan to save these new output values to the Terraform
state, without changing any real infrastructure.
─────────────────────────────────────────────────────────────────────────────
Saved the plan to: plan.tfplan
To perform exactly these actions, run the following command to apply:
terraform apply "plan.tfplan"
Show Conftest resultsWARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_event_rule.audit_logs_archiver_lambda_trigger"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_event_rule.form_archiver_lambda_trigger"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_event_rule.nagware_lambda_trigger"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_event_rule.reliability_dlq_lambda_trigger"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_event_rule.response_archiver_lambda_trigger"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.archive_form_templates"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.audit_logs"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.audit_logs_archiver"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.dead_letter_queue_consumer"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.nagware"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.reliability"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.response_archiver"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.submission"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.vault_integrity"]
WARN - plan.json - main - Missing Common Tags: ["aws_iam_policy.lambda_dynamodb"]
WARN - plan.json - main - Missing Common Tags: ["aws_iam_policy.lambda_kms"]
WARN - plan.json - main - Missing Common Tags: ["aws_iam_policy.lambda_logging"]
WARN - plan.json - main - Missing Common Tags: ["aws_iam_policy.lambda_rds"]
WARN - plan.json - main - Missing Common Tags: ["aws_iam_policy.lambda_s3"]
WARN - plan.json - main - Missing Common Tags: ["aws_iam_policy.lambda_secrets"]
WARN - plan.json - main - Missing Common Tags: ["aws_iam_policy.lambda_sns"]
WARN - plan.json - main - Missing Common Tags: ["aws_iam_policy.lambda_sqs"]
WARN -... |
Staging: alarms✅ Terraform Init: Plan: 3 to add, 0 to change, 0 to destroyShow summary
Show planResource actions are indicated with the following symbols:
+ create
Terraform will perform the following actions:
# aws_cloudwatch_metric_alarm.healthcheck_lambda_form_archiver_invocations will be created
+ resource "aws_cloudwatch_metric_alarm" "healthcheck_lambda_form_archiver_invocations" {
+ actions_enabled = true
+ alarm_description = "HealthCheck - no `form-archiver` invocations in a day."
+ alarm_name = "FormArchiverLambdaNoInvocations"
+ arn = (known after apply)
+ comparison_operator = "LessThanThreshold"
+ dimensions = {
+ "FunctionName" = "form-archiver"
}
+ evaluate_low_sample_count_percentiles = (known after apply)
+ evaluation_periods = 1
+ id = (known after apply)
+ metric_name = "Invocations"
+ namespace = "AWS/Lambda"
+ period = 86400
+ statistic = "Sum"
+ tags_all = {
+ "CostCentre" = "forms-platform-staging"
+ "Terraform" = "true"
}
+ threshold = 1
+ treat_missing_data = "breaching"
}
# aws_cloudwatch_metric_alarm.healthcheck_lambda_nagware_invocations_schedule will be created
+ resource "aws_cloudwatch_metric_alarm" "healthcheck_lambda_nagware_invocations_schedule" {
+ actions_enabled = true
+ alarm_description = "HealthCheck - no `nagware` invocations on schedule."
+ alarm_name = "NagwareLambdaNoInvocationsSchedule"
+ arn = (known after apply)
+ comparison_operator = "LessThanThreshold"
+ evaluate_low_sample_count_percentiles = (known after apply)
+ evaluation_periods = 1
+ id = (known after apply)
+ tags_all = {
+ "CostCentre" = "forms-platform-staging"
+ "Terraform" = "true"
}
+ threshold = 1
+ treat_missing_data = "breaching"
+ metric_query {
+ id = "invocations"
+ return_data = false
+ metric {
+ dimensions = {
+ "FunctionName" = "nagware"
}
+ metric_name = "Invocations"
+ namespace = "AWS/Lambda"
+ period = 86400
+ stat = "Sum"
+ unit = "Count"
}
}
+ metric_query {
+ expression = "IF((DAY(invocations)==2 OR DAY(invocations)==4 OR DAY(invocations)==7),invocations,1)"
+ id = "invocations_schedule"
+ label = "Invocations (schedule)"
+ return_data = true
}
}
# aws_cloudwatch_metric_alarm.healthcheck_lambda_response_archiver_invocations will be created
+ resource "aws_cloudwatch_metric_alarm" "healthcheck_lambda_response_archiver_invocations" {
+ actions_enabled = true
+ alarm_description = "HealthCheck - no `response-archiver` invocations in a day."
+ alarm_name = "ResponseArchiverLambdaNoInvocations"
+ arn = (known after apply)
+ comparison_operator = "LessThanThreshold"
+ dimensions = {
+ "FunctionName" = "response-archiver"
}
+ evaluate_low_sample_count_percentiles = (known after apply)
+ evaluation_periods = 1
+ id = (known after apply)
+ metric_name = "Invocations"
+ namespace = "AWS/Lambda"
+ period = 86400
+ statistic = "Sum"
+ tags_all = {
+ "CostCentre" = "forms-platform-staging"
+ "Terraform" = "true"
}
+ threshold = 1
+ treat_missing_data = "breaching"
}
Plan: 3 to add, 0 to change, 0 to destroy.
Warning: Argument is deprecated
with module.athena_bucket.aws_s3_bucket.this,
on .terraform/modules/athena_bucket/S3/main.tf line 8, in resource "aws_s3_bucket" "this":
8: resource "aws_s3_bucket" "this" {
Use the aws_s3_bucket_lifecycle_configuration resource instead
(and 3 more similar warnings elsewhere)
─────────────────────────────────────────────────────────────────────────────
Saved the plan to: plan.tfplan
To perform exactly these actions, run the following command to apply:
terraform apply "plan.tfplan"
Show Conftest resultsWARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_event_rule.codedeploy_sns"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.notify_slack"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.ELB_5xx_error_warn"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.UnHealthyHostCount-TargetGroup1"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.UnHealthyHostCount-TargetGroup2"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.alb_ddos"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.audit_log_dead_letter_queue_warn"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.cognito_login_outside_canada_warn"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.cognito_signin_exceeded"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.ddos_detected_forms_warn"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.ddos_detected_route53_warn[0]"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.forms_cpu_utilization_high_warn"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.forms_memory_utilization_high_warn"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.healthcheck_lambda_form_archiver_invocations"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.healthcheck_lambda_nagware_invocations_schedule"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.healthcheck_lambda_response_archiver_invocations"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.healthcheck_lambda_submission_invocations_anomaly"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.healthcheck_lambda_submission_invocations_core_hours"]
WARN... |
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Summary
Add CloudWatch alarms for the following three functions:
form-archiver: expect 1 invocation per day.nagware: expect 1 invocation on Tuesday, Thursday and Sunday.response-archiver: expect 1 invocation per dayRelated