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added detector for s3 5xxErrors #472
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# AWS-S3 SignalFx detectors | ||
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<!-- START doctoc generated TOC please keep comment here to allow auto update --> | ||
<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE --> | ||
:link: **Contents** | ||
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- [How to use this module?](#how-to-use-this-module) | ||
- [What are the available detectors in this module?](#what-are-the-available-detectors-in-this-module) | ||
- [How to collect required metrics?](#how-to-collect-required-metrics) | ||
- [Metrics](#metrics) | ||
- [Related documentation](#related-documentation) | ||
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<!-- END doctoc generated TOC please keep comment here to allow auto update --> | ||
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## How to use this module? | ||
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This directory defines a [Terraform](https://www.terraform.io/) | ||
[module](https://www.terraform.io/language/modules/syntax) you can use in your | ||
existing [stack](https://github.com/claranet/terraform-signalfx-detectors/wiki/Getting-started#stack) by adding a | ||
`module` configuration and setting its `source` parameter to URL of this folder: | ||
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```hcl | ||
module "signalfx-detectors-integration-aws-s3" { | ||
source = "github.com/claranet/terraform-signalfx-detectors.git//modules/integration_aws-s3?ref={revision}" | ||
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environment = var.environment | ||
notifications = local.notifications | ||
} | ||
``` | ||
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Note the following parameters: | ||
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* `source`: Use this parameter to specify the URL of the module. The double slash (`//`) is intentional and required. | ||
Terraform uses it to specify subfolders within a Git repo (see [module | ||
sources](https://www.terraform.io/language/modules/sources)). The `ref` parameter specifies a specific Git tag in | ||
this repository. It is recommended to use the latest "pinned" version in place of `{revision}`. Avoid using a branch | ||
like `master` except for testing purpose. Note that every modules in this repository are available on the Terraform | ||
[registry](https://registry.terraform.io/modules/claranet/detectors/signalfx) and we recommend using it as source | ||
instead of `git` which is more flexible but less future-proof. | ||
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* `environment`: Use this parameter to specify the | ||
[environment](https://github.com/claranet/terraform-signalfx-detectors/wiki/Getting-started#environment) used by this | ||
instance of the module. | ||
Its value will be added to the `prefixes` list at the start of the [detector | ||
name](https://github.com/claranet/terraform-signalfx-detectors/wiki/Templating#example). | ||
In general, it will also be used in the `filtering` internal sub-module to [apply | ||
filters](https://github.com/claranet/terraform-signalfx-detectors/wiki/Guidance#filtering) based on our default | ||
[tagging convention](https://github.com/claranet/terraform-signalfx-detectors/wiki/Tagging-convention) by default. | ||
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* `notifications`: Use this parameter to define where alerts should be sent depending on their severity. It consists | ||
of a Terraform [object](https://www.terraform.io/language/expressions/type-constraints#object) where each key represents an available | ||
[detector rule severity](https://docs.splunk.com/observability/alerts-detectors-notifications/create-detectors-for-alerts.html#severity) | ||
and its value is a list of recipients. Every recipients must respect the [detector notification | ||
format](https://registry.terraform.io/providers/splunk-terraform/signalfx/latest/docs/resources/detector#notification-format). | ||
Check the [notification binding](https://github.com/claranet/terraform-signalfx-detectors/wiki/Notifications-binding) | ||
documentation to understand the recommended role of each severity. | ||
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These 3 parameters alongs with all variables defined in [common-variables.tf](common-variables.tf) are common to all | ||
[modules](../) in this repository. Other variables, specific to this module, are available in | ||
[variables.tf](variables.tf) and [variables-gen.tf](variables-gen.tf). | ||
In general, the default configuration "works" but all of these Terraform | ||
[variables](https://www.terraform.io/language/values/variables) make it possible to | ||
customize the detectors behavior to better fit your needs. | ||
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Most of them represent usual tips and rules detailled in the | ||
[guidance](https://github.com/claranet/terraform-signalfx-detectors/wiki/Guidance) documentation and listed in the | ||
common [variables](https://github.com/claranet/terraform-signalfx-detectors/wiki/Variables) dedicated documentation. | ||
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Feel free to explore the [wiki](https://github.com/claranet/terraform-signalfx-detectors/wiki) for more information about | ||
general usage of this repository. | ||
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## What are the available detectors in this module? | ||
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This module creates the following SignalFx detectors which could contain one or multiple alerting rules: | ||
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|Detector|Critical|Major|Minor|Warning|Info| | ||
|---|---|---|---|---|---| | ||
|AWS S3 s3 errors and requests|X|X|-|-|-| | ||
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## How to collect required metrics? | ||
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This module deploys detectors using metrics reported by the | ||
[AWS integration](https://docs.splunk.com/Observability/gdi/get-data-in/connect/aws/aws.html) configurable | ||
with [this Terraform module](https://github.com/claranet/terraform-signalfx-integrations/tree/master/cloud/aws). | ||
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Check the [Related documentation](#related-documentation) section for more detailed and specific information about this module dependencies. | ||
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### Metrics | ||
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Here is the list of required metrics for detectors in this module. | ||
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* `5xxErrors` | ||
* `AllRequests` | ||
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## Related documentation | ||
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* [Terraform SignalFx provider](https://registry.terraform.io/providers/splunk-terraform/signalfx/latest/docs) | ||
* [Terraform SignalFx detector](https://registry.terraform.io/providers/splunk-terraform/signalfx/latest/docs/resources/detector) | ||
* [Splunk Observability integrations](https://docs.splunk.com/Observability/gdi/get-data-in/integrations.html) |
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../../common/module/filters-integration-aws.tf |
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../../common/module/locals.tf |
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../../common/module/modules.tf |
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../../common/module/variables.tf |
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../../common/module/versions.tf |
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module: AWS S3 | ||
name: S3 Errors and Requests | ||
id: s3_5xxErrors | ||
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transformation: true | ||
aggregation: true | ||
filtering: "filter('namespace', 'AWS/S3')" | ||
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value_unit: "%" | ||
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signals: | ||
errors: | ||
metric: '5xxErrors' | ||
extrapolation: zero | ||
rollup: sum | ||
requests: | ||
metric: 'AllRequests' | ||
extrapolation: zero | ||
rollup: sum | ||
signal: | ||
formula: (errors/requests).scale(100).fill(value=0) | ||
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rules: | ||
critical: | ||
threshold: 10 | ||
comparator: ">" | ||
lasting_duration: 5m | ||
lasting_at_least: 0.9 | ||
append_condition: and when(requests > ${var.minimum_traffic}) | ||
major: | ||
threshold: 5 | ||
comparator: ">" | ||
dependency: critical | ||
lasting_duration: 5m | ||
lasting_at_least: 0.9 | ||
append_condition: and when(requests > ${var.minimum_traffic}) |
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documentations: | ||
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source_doc: |
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resource "signalfx_detector" "s3_5xxerrors" { | ||
name = format("%s %s", local.detector_name_prefix, "AWS S3 s3 errors and requests") | ||
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authorized_writer_teams = var.authorized_writer_teams | ||
teams = try(coalescelist(var.teams, var.authorized_writer_teams), null) | ||
tags = compact(concat(local.common_tags, local.tags, var.extra_tags)) | ||
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viz_options { | ||
label = "signal" | ||
value_suffix = "%" | ||
} | ||
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program_text = <<-EOF | ||
base_filtering = filter('namespace', 'AWS/S3') | ||
errors = data('5xxErrors', filter=base_filtering and ${module.filtering.signalflow}, rollup='sum', extrapolation='zero')${var.s3_5xxerrors_aggregation_function}${var.s3_5xxerrors_transformation_function} | ||
requests = data('AllRequests', filter=base_filtering and ${module.filtering.signalflow}, rollup='sum', extrapolation='zero')${var.s3_5xxerrors_aggregation_function}${var.s3_5xxerrors_transformation_function} | ||
signal = (errors/requests).scale(100).fill(value=0).publish('signal') | ||
detect(when(signal > ${var.s3_5xxerrors_threshold_critical}, lasting=%{if var.s3_5xxerrors_lasting_duration_critical == null}None%{else}'${var.s3_5xxerrors_lasting_duration_critical}'%{endif}, at_least=${var.s3_5xxerrors_at_least_percentage_critical}) and when(requests > ${var.minimum_traffic})).publish('CRIT') | ||
detect(when(signal > ${var.s3_5xxerrors_threshold_major}, lasting=%{if var.s3_5xxerrors_lasting_duration_major == null}None%{else}'${var.s3_5xxerrors_lasting_duration_major}'%{endif}, at_least=${var.s3_5xxerrors_at_least_percentage_major}) and when(requests > ${var.minimum_traffic}) and (not when(signal > ${var.s3_5xxerrors_threshold_critical}, lasting=%{if var.s3_5xxerrors_lasting_duration_critical == null}None%{else}'${var.s3_5xxerrors_lasting_duration_critical}'%{endif}, at_least=${var.s3_5xxerrors_at_least_percentage_critical}) and when(requests > ${var.minimum_traffic}))).publish('MAJOR') | ||
EOF | ||
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rule { | ||
description = "is too high > ${var.s3_5xxerrors_threshold_critical}%" | ||
severity = "Critical" | ||
detect_label = "CRIT" | ||
disabled = coalesce(var.s3_5xxerrors_disabled_critical, var.s3_5xxerrors_disabled, var.detectors_disabled) | ||
notifications = try(coalescelist(lookup(var.s3_5xxerrors_notifications, "critical", []), var.notifications.critical), null) | ||
runbook_url = try(coalesce(var.s3_5xxerrors_runbook_url, var.runbook_url), "") | ||
tip = var.s3_5xxerrors_tip | ||
parameterized_subject = var.message_subject == "" ? local.rule_subject : var.message_subject | ||
parameterized_body = var.message_body == "" ? local.rule_body : var.message_body | ||
} | ||
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rule { | ||
description = "is too high > ${var.s3_5xxerrors_threshold_major}%" | ||
severity = "Major" | ||
detect_label = "MAJOR" | ||
disabled = coalesce(var.s3_5xxerrors_disabled_major, var.s3_5xxerrors_disabled, var.detectors_disabled) | ||
notifications = try(coalescelist(lookup(var.s3_5xxerrors_notifications, "major", []), var.notifications.major), null) | ||
runbook_url = try(coalesce(var.s3_5xxerrors_runbook_url, var.runbook_url), "") | ||
tip = var.s3_5xxerrors_tip | ||
parameterized_subject = var.message_subject == "" ? local.rule_subject : var.message_subject | ||
parameterized_body = var.message_body == "" ? local.rule_body : var.message_body | ||
} | ||
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max_delay = var.s3_5xxerrors_max_delay | ||
} | ||
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output "s3_5xxerrors" { | ||
description = "Detector resource for s3_5xxerrors" | ||
value = signalfx_detector.s3_5xxerrors | ||
} | ||
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locals { | ||
tags = ["integration", "aws-s3"] | ||
} | ||
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# s3_5xxerrors detector | ||
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variable "s3_5xxerrors_notifications" { | ||
description = "Notification recipients list per severity overridden for s3_5xxerrors detector" | ||
type = map(list(string)) | ||
default = {} | ||
} | ||
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variable "s3_5xxerrors_aggregation_function" { | ||
description = "Aggregation function and group by for s3_5xxerrors detector (i.e. \".mean(by=['host'])\")" | ||
type = string | ||
default = "" | ||
} | ||
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variable "s3_5xxerrors_transformation_function" { | ||
description = "Transformation function for s3_5xxerrors detector (i.e. \".mean(over='5m')\")" | ||
type = string | ||
default = "" | ||
} | ||
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variable "s3_5xxerrors_max_delay" { | ||
description = "Enforce max delay for s3_5xxerrors detector (use \"0\" or \"null\" for \"Auto\")" | ||
type = number | ||
default = null | ||
} | ||
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variable "s3_5xxerrors_tip" { | ||
description = "Suggested first course of action or any note useful for incident handling" | ||
type = string | ||
default = "" | ||
} | ||
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variable "s3_5xxerrors_runbook_url" { | ||
description = "URL like SignalFx dashboard or wiki page which can help to troubleshoot the incident cause" | ||
type = string | ||
default = "" | ||
} | ||
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variable "s3_5xxerrors_disabled" { | ||
description = "Disable all alerting rules for s3_5xxerrors detector" | ||
type = bool | ||
default = null | ||
} | ||
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variable "s3_5xxerrors_disabled_critical" { | ||
description = "Disable critical alerting rule for s3_5xxerrors detector" | ||
type = bool | ||
default = null | ||
} | ||
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variable "s3_5xxerrors_disabled_major" { | ||
description = "Disable major alerting rule for s3_5xxerrors detector" | ||
type = bool | ||
default = null | ||
} | ||
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variable "s3_5xxerrors_threshold_critical" { | ||
description = "Critical threshold for s3_5xxerrors detector in %" | ||
type = number | ||
default = 10 | ||
} | ||
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variable "s3_5xxerrors_lasting_duration_critical" { | ||
description = "Minimum duration that conditions must be true before raising alert" | ||
type = string | ||
default = "5m" | ||
} | ||
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variable "s3_5xxerrors_at_least_percentage_critical" { | ||
description = "Percentage of lasting that conditions must be true before raising alert (>= 0.0 and <= 1.0)" | ||
type = number | ||
default = 0.9 | ||
} | ||
variable "s3_5xxerrors_threshold_major" { | ||
description = "Major threshold for s3_5xxerrors detector in %" | ||
type = number | ||
default = 5 | ||
} | ||
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variable "s3_5xxerrors_lasting_duration_major" { | ||
description = "Minimum duration that conditions must be true before raising alert" | ||
type = string | ||
default = "5m" | ||
} | ||
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variable "s3_5xxerrors_at_least_percentage_major" { | ||
description = "Percentage of lasting that conditions must be true before raising alert (>= 0.0 and <= 1.0)" | ||
type = number | ||
default = 0.9 | ||
} |
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# Module specific | ||
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variable "minimum_traffic" { | ||
description = "Minimum required traffic to evaluate rate of errors detectors" | ||
type = number | ||
default = 4 | ||
} |
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I can't see where the
minimum_traffic
variable is declared