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feat: add CloudWatch alarms and alarms forwarding to BetterStack (#131)
* feat: add CloudWatch alarms and alarms forwarding to BetterStack * fix: ignore topic encryption warning
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| * @Xav | ||
| * @Elyniss |
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| formatter: 'markdown table' | ||
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| recursive: | ||
| enabled: true | ||
| path: . | ||
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| output: | ||
| file: README.md | ||
| mode: inject | ||
| template: |- | ||
| <!-- BEGIN_TF_DOCS --> | ||
| {{ .Content }} | ||
| <!-- END_TF_DOCS --> | ||
| content: | | ||
| {{ .Header }} | ||
| {{ .Requirements }} | ||
| {{ .Providers }} | ||
| {{ .Modules }} | ||
| ## Inputs | ||
| {{- $hideInputs := list "namespace" "region" "stage" "name" "delimiter" "attributes" "tags" "regex_replace_chars" "id_length_limit" "label_key_case" "label_value_case" "label_order" }} | ||
| {{- $filteredInputs := list -}} | ||
| {{- range .Module.Inputs -}} | ||
| {{- if not (has .Name $hideInputs) -}} | ||
| {{- $filteredInputs = append $filteredInputs . -}} | ||
| {{- end -}} | ||
| {{- end -}} | ||
| {{ if not $filteredInputs }} | ||
| No inputs. | ||
| {{ else }} | ||
| | Name | Description | Type | Default | Required | | ||
| |------|-------------|------|---------|:--------:| | ||
| {{- range $filteredInputs }} | ||
| | {{ anchorNameMarkdown "input" .Name }} | {{ tostring .Description | sanitizeMarkdownTbl }} | {{ printf " " }}<pre lang="json">{{ tostring .Type | sanitizeMarkdownTbl }}</pre> | {{ printf " " }}<pre lang="json">{{ .GetValue | sanitizeMarkdownTbl }}</pre> | {{ printf " " }}{{ ternary .Required "yes" "no" }} | | ||
| {{- end }} | ||
| {{- end }} | ||
| {{ .Outputs }} | ||
| {{/** End of file fixer */}} |
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| # `cloudwatch` module | ||
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| This module configures the cloudwatch alarms and webhook forwarding. | ||
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| <!-- BEGIN_TF_DOCS --> | ||
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| ## Requirements | ||
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| | Name | Version | | ||
| |------|---------| | ||
| | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | ~> 1.0 | | ||
| | <a name="requirement_aws"></a> [aws](#requirement\_aws) | ~> 5.7 | | ||
| ## Providers | ||
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| | Name | Version | | ||
| |------|---------| | ||
| | <a name="provider_aws"></a> [aws](#provider\_aws) | ~> 5.7 | | ||
| ## Modules | ||
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| | Name | Source | Version | | ||
| |------|--------|---------| | ||
| | <a name="module_cloudwatch"></a> [cloudwatch](#module\_cloudwatch) | app.terraform.io/wallet-connect/cloudwatch-constants/aws | 1.0.0 | | ||
| | <a name="module_this"></a> [this](#module\_this) | app.terraform.io/wallet-connect/label/null | 0.3.2 | | ||
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| ## Inputs | ||
| | Name | Description | Type | Default | Required | | ||
| |------|-------------|------|---------|:--------:| | ||
| | <a name="input_context"></a> [context](#input\_context) | Single object for setting entire context at once.<br>See description of individual variables for details.<br>Leave string and numeric variables as `null` to use default value.<br>Individual variable settings (non-null) override settings in context object,<br>except for attributes and tags, which are merged. | <pre lang="json">any</pre> | <pre lang="json">n/a</pre> | yes | | ||
| | <a name="input_docdb_cluster_id"></a> [docdb\_cluster\_id](#input\_docdb\_cluster\_id) | The DocumentDB cluster ID | <pre lang="json">string</pre> | <pre lang="json">n/a</pre> | yes | | ||
| | <a name="input_docdb_cpu_threshold"></a> [docdb\_cpu\_threshold](#input\_docdb\_cpu\_threshold) | The DocumentDB CPU utilization alarm threshold in percents | <pre lang="json">number</pre> | <pre lang="json">80</pre> | no | | ||
| | <a name="input_docdb_low_memory_throttling_threshold"></a> [docdb\_low\_memory\_throttling\_threshold](#input\_docdb\_low\_memory\_throttling\_threshold) | The DocumentDB low memory throttling alarm threshold in number of operations per period | <pre lang="json">number</pre> | <pre lang="json">2</pre> | no | | ||
| | <a name="input_docdb_memory_threshold"></a> [docdb\_memory\_threshold](#input\_docdb\_memory\_threshold) | The DocumentDB available memory alarm threshold in GiB | <pre lang="json">number</pre> | <pre lang="json">4</pre> | no | | ||
| | <a name="input_ecs_cluster_name"></a> [ecs\_cluster\_name](#input\_ecs\_cluster\_name) | The name of the ECS cluster running the application | <pre lang="json">string</pre> | <pre lang="json">n/a</pre> | yes | | ||
| | <a name="input_ecs_cpu_threshold"></a> [ecs\_cpu\_threshold](#input\_ecs\_cpu\_threshold) | The ECS CPU utilization alarm threshold in percents | <pre lang="json">number</pre> | <pre lang="json">80</pre> | no | | ||
| | <a name="input_ecs_memory_threshold"></a> [ecs\_memory\_threshold](#input\_ecs\_memory\_threshold) | The ECS memory utilization alarm threshold in percents | <pre lang="json">number</pre> | <pre lang="json">80</pre> | no | | ||
| | <a name="input_ecs_service_name"></a> [ecs\_service\_name](#input\_ecs\_service\_name) | The name of the ECS service running the application | <pre lang="json">string</pre> | <pre lang="json">n/a</pre> | yes | | ||
| | <a name="input_webhook_url"></a> [webhook\_url](#input\_webhook\_url) | The URL of the webhook to be called on alarms | <pre lang="json">string</pre> | <pre lang="json">n/a</pre> | yes | | ||
| ## Outputs | ||
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| No outputs. | ||
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| <!-- END_TF_DOCS --> |
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| resource "aws_cloudwatch_metric_alarm" "docdb_cpu_utilization" { | ||
| alarm_name = "${local.alarm_prefix} - DocumentDB CPU Utilization" | ||
| alarm_description = "${local.alarm_prefix} - DocumentDB CPU utilization is high (over ${var.docdb_cpu_threshold}%)" | ||
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| namespace = module.cloudwatch.namespaces.DocumentDB | ||
| dimensions = { | ||
| DBClusterIdentifier = var.docdb_cluster_id | ||
| } | ||
| metric_name = module.cloudwatch.metrics.DocumentDB.CPUUtilization | ||
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| evaluation_periods = local.evaluation_periods | ||
| period = local.period | ||
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| statistic = module.cloudwatch.statistics.Average | ||
| comparison_operator = module.cloudwatch.operators.GreaterThanOrEqualToThreshold | ||
| threshold = var.docdb_cpu_threshold | ||
| treat_missing_data = "breaching" | ||
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| alarm_actions = [aws_sns_topic.webhook.arn] | ||
| insufficient_data_actions = [aws_sns_topic.webhook.arn] | ||
| } | ||
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| resource "aws_cloudwatch_metric_alarm" "docdb_available_memory" { | ||
| alarm_name = "${local.alarm_prefix} - DocumentDB Available Memory" | ||
| alarm_description = "${local.alarm_prefix} - DocumentDB available memory is low (less than ${var.docdb_memory_threshold}GiB)" | ||
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| namespace = module.cloudwatch.namespaces.DocumentDB | ||
| dimensions = { | ||
| DBClusterIdentifier = var.docdb_cluster_id | ||
| } | ||
| metric_name = module.cloudwatch.metrics.DocumentDB.FreeableMemory | ||
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| evaluation_periods = local.evaluation_periods | ||
| period = local.period | ||
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| statistic = module.cloudwatch.statistics.Average | ||
| comparison_operator = module.cloudwatch.operators.LessThanOrEqualToThreshold | ||
| threshold = var.docdb_memory_threshold * pow(1000, 3) | ||
| treat_missing_data = "breaching" | ||
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| alarm_actions = [aws_sns_topic.webhook.arn] | ||
| insufficient_data_actions = [aws_sns_topic.webhook.arn] | ||
| } | ||
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| resource "aws_cloudwatch_metric_alarm" "docdb_low_memory_throttling" { | ||
| alarm_name = "${local.alarm_prefix} - DocumentDB Low Memory Throttling" | ||
| alarm_description = "${local.alarm_prefix} - DocumentDB is throttling operations due to low memory" | ||
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| namespace = module.cloudwatch.namespaces.DocumentDB | ||
| dimensions = { | ||
| DBClusterIdentifier = var.docdb_cluster_id | ||
| } | ||
| metric_name = module.cloudwatch.metrics.DocumentDB.LowMemNumOperationsThrottled | ||
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| evaluation_periods = local.evaluation_periods | ||
| period = local.period | ||
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| statistic = module.cloudwatch.statistics.Maximum | ||
| comparison_operator = module.cloudwatch.operators.GreaterThanThreshold | ||
| threshold = var.docdb_low_memory_throttling_threshold | ||
| treat_missing_data = "breaching" | ||
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| alarm_actions = [aws_sns_topic.webhook.arn] | ||
| insufficient_data_actions = [aws_sns_topic.webhook.arn] | ||
| } |
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| resource "aws_cloudwatch_metric_alarm" "ecs_cpu_utilization" { | ||
| alarm_name = "${local.alarm_prefix} - ECS CPU Utilization" | ||
| alarm_description = "${local.alarm_prefix} - ECS CPU utilization is high (over ${var.ecs_cpu_threshold}%)" | ||
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| namespace = module.cloudwatch.namespaces.ECS | ||
| dimensions = { | ||
| ClusterName = var.ecs_cluster_name | ||
| ServiceName = var.ecs_service_name | ||
| } | ||
| metric_name = module.cloudwatch.metrics.ECS.CPUUtilization | ||
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| evaluation_periods = local.evaluation_periods | ||
| period = local.period | ||
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| statistic = module.cloudwatch.statistics.Average | ||
| comparison_operator = module.cloudwatch.operators.GreaterThanOrEqualToThreshold | ||
| threshold = var.ecs_cpu_threshold | ||
| treat_missing_data = "breaching" | ||
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| alarm_actions = [aws_sns_topic.webhook.arn] | ||
| insufficient_data_actions = [aws_sns_topic.webhook.arn] | ||
| } | ||
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| resource "aws_cloudwatch_metric_alarm" "ecs_mem_utilization" { | ||
| alarm_name = "${local.alarm_prefix} - ECS Memory Utilization" | ||
| alarm_description = "${local.alarm_prefix} - ECS Memory utilization is high (over ${var.ecs_memory_threshold}%)" | ||
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| namespace = module.cloudwatch.namespaces.ECS | ||
| dimensions = { | ||
| ClusterName = var.ecs_cluster_name | ||
| ServiceName = var.ecs_service_name | ||
| } | ||
| metric_name = module.cloudwatch.metrics.ECS.MemoryUtilization | ||
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| evaluation_periods = local.evaluation_periods | ||
| period = local.period | ||
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| statistic = module.cloudwatch.statistics.Average | ||
| comparison_operator = module.cloudwatch.operators.GreaterThanOrEqualToThreshold | ||
| threshold = var.ecs_memory_threshold | ||
| treat_missing_data = "breaching" | ||
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| alarm_actions = [aws_sns_topic.webhook.arn] | ||
| insufficient_data_actions = [aws_sns_topic.webhook.arn] | ||
| } |
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