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Merged in MON-281-monitor-for-disk-forecast-system (pull request #121)

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MON-281 Disk space forecast monitor in system generic

Approved-by: Rafael Romero Carmona <rafael.romero.carmona@fr.clara.net>
Approved-by: Quentin Manfroi <quentin.manfroi@yahoo.fr>
Approved-by: Alexandre Gaillet <alexandre.gaillet@fr.clara.net>
This commit is contained in:
Rafael Romero Carmona 2018-08-22 10:40:44 +00:00 committed by Quentin Manfroi
commit 32e37169f0
5 changed files with 136 additions and 1 deletions
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2
scripts/02_update_readme.sh
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@ -55,7 +55,7 @@ EOF
IFS=$(echo -en "\n\b")
for match in $(grep -E ^[[:space:]]+name[[:space:]]+= $(basename ${path})); do
name=$(get_name "${match}")
echo "- $name" >> README.md
echo "- ${name/could reach/forecast}" >> README.md
done
IFS=$SAVEIFS
terraform-docs md ./ >> README.md

15
system/generic/README.md
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@ -19,6 +19,7 @@ Creates DataDog monitors with the following checks:
- CPU usage
- CPU load 5
- Free disk space
- Disk Space forecast
- Free disk inodes
- Free memory
@ -52,6 +53,19 @@ Creates DataDog monitors with the following checks:
| free_disk_inodes_time_aggregator | Monitor aggregator for Free disk inodes [available values: min, max or avg] | string | `min` | no |
| free_disk_inodes_timeframe | Monitor timeframe for Free disk inodes [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`] | string | `last_5m` | no |
| free_disk_space_extra_tags | Extra tags for Free diskspace monitor | list | `<list>` | no |
| free_disk_space_forecast_algorithm | Algorithm for the Free diskspace Forecast monitor [available values: `linear` or `seasonal`] | string | `linear` | no |
| free_disk_space_forecast_deviations | Deviations for the Free diskspace Forecast monitor [available values: `1`, `2`, `3`, `4` or `5`] | string | `1` | no |
| free_disk_space_forecast_extra_tags | Extra tags for Free diskspace forecast monitor | list | `<list>` | no |
| free_disk_space_forecast_interval | Interval for the Free diskspace Forecast monitor [available values: `30m`, `60m` or `120m`] | string | `60m` | no |
| free_disk_space_forecast_linear_history | History for the Free diskspace Forecast monitor [available values: `12h`, `#d` (1, 2, or 3), `#w` (1, or 2) or `#mo` (1, 2 or 3)] | string | `1w` | no |
| free_disk_space_forecast_linear_model | Model for the Free diskspace Forecast monitor [available values: `default`, `simple` or `reactive`] | string | `default` | no |
| free_disk_space_forecast_message | Custom message for Free diskspace forecast monitor | string | `` | no |
| free_disk_space_forecast_seasonal_seasonality | Seasonality for the Free diskspace Forecast monitor | string | `weekly` | no |
| free_disk_space_forecast_silenced | Groups to mute for Free diskspace forecast monitor | map | `<map>` | no |
| free_disk_space_forecast_threshold_critical | Free disk space forecast critical threshold | string | `80` | no |
| free_disk_space_forecast_threshold_critical_recovery | Free disk space forecast recovery threshold | string | `72` | no |
| free_disk_space_forecast_time_aggregator | Monitor aggregator for Free diskspace forecast [available values: min, max or avg] | string | `max` | no |
| free_disk_space_forecast_timeframe | Monitor timeframe for Free diskspace forecast [available values: `next_12h`, `next_#d` (1, 2, or 3), `next_#w` (1 or 2) or `next_#mo` (1, 2 or 3)] | string | `next_1w` | no |
| free_disk_space_message | Custom message for Free diskspace monitor | string | `` | no |
| free_disk_space_silenced | Groups to mute for Free diskspace monitor | map | `<map>` | no |
| free_disk_space_threshold_critical | Free disk space critical threshold | string | `10` | no |
@ -73,6 +87,7 @@ Creates DataDog monitors with the following checks:
| Name | Description |
|------|-------------|
| datadog_cpu_too_high_id | id for monitor datadog_cpu_too_high |
| datadog_free_disk_space_forecast_id | id for monitor datadog_free_disk_space_forecast |
| datadog_free_disk_space_inodes_too_low_id | id for monitor datadog_free_disk_space_inodes_too_low |
| datadog_free_disk_space_too_low_id | id for monitor datadog_free_disk_space_too_low |
| datadog_free_memory_id | id for monitor datadog_free_memory |

76
system/generic/inputs.tf
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@ -151,6 +151,82 @@ variable "free_disk_space_threshold_critical" {
default = 10
}
variable "free_disk_space_forecast_silenced" {
description = "Groups to mute for Free diskspace forecast monitor"
type = "map"
default = {}
}
variable "free_disk_space_forecast_extra_tags" {
description = "Extra tags for Free diskspace forecast monitor"
type = "list"
default = []
}
variable "free_disk_space_forecast_message" {
description = "Custom message for Free diskspace forecast monitor"
type = "string"
default = ""
}
variable "free_disk_space_forecast_time_aggregator" {
description = "Monitor aggregator for Free diskspace forecast [available values: min, max or avg]"
type = "string"
default = "max"
}
variable "free_disk_space_forecast_timeframe" {
description = "Monitor timeframe for Free diskspace forecast [available values: `next_12h`, `next_#d` (1, 2, or 3), `next_#w` (1 or 2) or `next_#mo` (1, 2 or 3)]"
type = "string"
default = "next_1w"
}
variable "free_disk_space_forecast_algorithm" {
description = "Algorithm for the Free diskspace Forecast monitor [available values: `linear` or `seasonal`]"
type = "string"
default = "linear"
}
variable "free_disk_space_forecast_deviations" {
description = "Deviations for the Free diskspace Forecast monitor [available values: `1`, `2`, `3`, `4` or `5`]"
type = "string"
default = 1
}
variable "free_disk_space_forecast_interval" {
description = "Interval for the Free diskspace Forecast monitor [available values: `30m`, `60m` or `120m`]"
type = "string"
default = "60m"
}
variable "free_disk_space_forecast_linear_history" {
description = "History for the Free diskspace Forecast monitor [available values: `12h`, `#d` (1, 2, or 3), `#w` (1, or 2) or `#mo` (1, 2 or 3)]"
type = "string"
default = "1w"
}
variable "free_disk_space_forecast_linear_model" {
description = "Model for the Free diskspace Forecast monitor [available values: `default`, `simple` or `reactive`]"
type = "string"
default = "default"
}
variable "free_disk_space_forecast_seasonal_seasonality" {
description = "Seasonality for the Free diskspace Forecast monitor"
type = "string"
default = "weekly"
}
variable "free_disk_space_forecast_threshold_critical_recovery" {
description = "Free disk space forecast recovery threshold"
default = 72
}
variable "free_disk_space_forecast_threshold_critical" {
description = "Free disk space forecast critical threshold"
default = 80
}
variable "free_disk_inodes_silenced" {
description = "Groups to mute for Free disk inodes monitor"
type = "map"

39
system/generic/monitors-system.tf
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@ -93,6 +93,45 @@ resource "datadog_monitor" "datadog_free_disk_space_too_low" {
tags = ["env:${var.environment}", "type:system", "provider:disk", "resource:generic", "team:claranet", "created-by:terraform", "${var.free_disk_space_extra_tags}"]
}
resource "datadog_monitor" "datadog_free_disk_space_forecast" {
name = "[${var.environment}] Disk Space could reach {{#is_alert}}{{threshold}}%{{/is_alert}} in a near future"
message = "${coalesce(var.free_disk_space_forecast_message, var.message)}"
query = <<EOF
${var.free_disk_space_forecast_time_aggregator}(${var.free_disk_space_forecast_timeframe}):
forecast(avg:system.disk.in_use${module.filter-tags-disk.query_alert} by {host,device} * 100,
'${var.free_disk_space_forecast_algorithm}',
${var.free_disk_space_forecast_deviations},
interval='${var.free_disk_space_forecast_interval}',
${var.free_disk_space_forecast_algorithm == "linear" ? format("history='%s',model='%s'", var.free_disk_space_forecast_linear_history, var.free_disk_space_forecast_linear_model): ""}
${var.free_disk_space_forecast_algorithm == "seasonal" ? format("seasonality='%s'", var.free_disk_space_forecast_seasonal_seasonality): ""}
)
>= ${var.free_disk_space_forecast_threshold_critical}
EOF
type = "query alert"
thresholds {
critical_recovery = "${var.free_disk_space_forecast_threshold_critical_recovery}"
critical = "${var.free_disk_space_forecast_threshold_critical}"
}
notify_audit = false
locked = false
timeout_h = 0
include_tags = true
require_full_window = true
notify_no_data = false
renotify_interval = 0
evaluation_delay = "${var.evaluation_delay}"
new_host_delay = "${var.new_host_delay}"
silenced = "${var.free_disk_space_forecast_silenced}"
tags = ["env:${var.environment}", "type:system", "provider:disk", "resource:generic", "team:claranet", "created-by:terraform", "${var.free_disk_space_forecast_extra_tags}"]
}
resource "datadog_monitor" "datadog_free_disk_space_inodes_too_low" {
name = "[${var.environment}] Free disk inodes {{#is_alert}}{{{comparator}}} {{threshold}}% ({{value}}%){{/is_alert}}{{#is_warning}}{{{comparator}}} {{warn_threshold}}% ({{value}}%){{/is_warning}}"
message = "${coalesce(var.free_disk_inodes_message, var.message)}"

5
system/generic/outputs.tf
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@ -13,6 +13,11 @@ output "datadog_free_disk_space_too_low_id" {
value = "${datadog_monitor.datadog_free_disk_space_too_low.id}"
}
output "datadog_free_disk_space_forecast_id" {
description = "id for monitor datadog_free_disk_space_forecast"
value = "${datadog_monitor.datadog_free_disk_space_forecast.id}"
}
output "datadog_free_disk_space_inodes_too_low_id" {
description = "id for monitor datadog_free_disk_space_inodes_too_low"
value = "${datadog_monitor.datadog_free_disk_space_inodes_too_low.id}"