devops-stack-module-kube-prometheus-stack

A DevOps Stack module to deploy and configure kube-prometheus-chart.

The kube-prometheus-stack chart used by this module is shipped in this repository as well, in order to avoid any unwanted behaviors caused by unsupported versions.

Current Chart Version Original Repository Default Values

58.0.1

Chart

values.yaml

Since this module is meant to be instantiated using its variants, the usage documentation is available in each variant ( AKS | EKS | KinD | SKS ).

Below you will only find the technical reference automatically generated from the *.tf files on the root module.

Technical Documentation

Requirements

The following requirements are needed by this module:

Providers

The following providers are used by this module:

Resources

The following resources are used by this module:

Required Inputs

The following input variables are required:

cluster_name

Description: Name given to the cluster. Value used for naming some the resources created by the module.

Type: string

base_domain

Description: Base domain of the cluster. Value used for the ingress' URL of the application.

Type: string

Optional Inputs

The following input variables are optional (have default values):

subdomain

Description: Subdomain of the cluster. Value used for the ingress' URL of the application.

Type: string

Default: "apps"

argocd_project

Description: Name of the Argo CD AppProject where the Application should be created. If not set, the Application will be created in a new AppProject only for this Application.

Type: string

Default: null

argocd_labels

Description: Labels to attach to the Argo CD Application resource.

Type: map(string)

Default: {}

destination_cluster

Description: Destination cluster where the application should be deployed.

Type: string

Default: "in-cluster"

target_revision

Description: Override of target revision of the application chart.

Type: string

Default: "v10.1.0"

cluster_issuer

Description: SSL certificate issuer to use. Usually you would configure this value as letsencrypt-staging or letsencrypt-prod on your root *.tf files.

Type: string

Default: "selfsigned-issuer"

helm_values

Description: Helm chart value overrides. They should be passed as a list of HCL structures.

Type: any

Default: []

deep_merge_append_list

Description: A boolean flag to enable/disable appending lists instead of overwriting them.

Type: bool

Default: false

app_autosync

Description: Automated sync options for the Argo CD Application resource.

Type:

object({
    allow_empty = optional(bool)
    prune       = optional(bool)
    self_heal   = optional(bool)
  })

Default:

{
  "allow_empty": false,
  "prune": true,
  "self_heal": true
}

dependency_ids

Description: n/a

Type: map(string)

Default: {}

resources

Description: Resource limits and requests for kube-prometheus-stack’s components. Follow the style on official documentation to understand the format of the values.

These are not production values. You should always adjust them to your needs.

Type:

object({

    prometheus = optional(object({
      requests = optional(object({
        cpu    = optional(string, "250m")
        memory = optional(string, "512Mi")
      }), {})
      limits = optional(object({
        cpu    = optional(string)
        memory = optional(string, "1024Mi")
      }), {})
    }), {})

    prometheus_operator = optional(object({
      requests = optional(object({
        cpu    = optional(string, "50m")
        memory = optional(string, "128Mi")
      }), {})
      limits = optional(object({
        cpu    = optional(string)
        memory = optional(string, "128Mi")
      }), {})
    }), {})

    thanos_sidecar = optional(object({
      requests = optional(object({
        cpu    = optional(string, "100m")
        memory = optional(string, "256Mi")
      }), {})
      limits = optional(object({
        cpu    = optional(string)
        memory = optional(string, "512Mi")
      }), {})
    }), {})

    alertmanager = optional(object({
      requests = optional(object({
        cpu    = optional(string, "50m")
        memory = optional(string, "128Mi")
      }), {})
      limits = optional(object({
        cpu    = optional(string)
        memory = optional(string, "256Mi")
      }), {})
    }), {})

    kube_state_metrics = optional(object({
      requests = optional(object({
        cpu    = optional(string, "50m")
        memory = optional(string, "128Mi")
      }), {})
      limits = optional(object({
        cpu    = optional(string)
        memory = optional(string, "128Mi")
      }), {})
    }), {})

    grafana = optional(object({
      requests = optional(object({
        cpu    = optional(string, "250m")
        memory = optional(string, "512Mi")
      }), {})
      limits = optional(object({
        cpu    = optional(string)
        memory = optional(string, "512Mi")
      }), {})
    }), {})

    node_exporter = optional(object({
      requests = optional(object({
        cpu    = optional(string, "50m")
        memory = optional(string, "128Mi")
      }), {})
      limits = optional(object({
        cpu    = optional(string)
        memory = optional(string, "128Mi")
      }), {})
    }), {})

  })

Default: {}

grafana

Description: Grafana settings

Type: any

Default: {}

prometheus

Description: Prometheus settings

Type: any

Default: {}

alertmanager

Description: Object containing Alertmanager settings. The following attributes are supported:

  • enabled: whether Alertmanager is deployed or not (default: true).

  • domain: domain name configured in the Ingress (default: prometheus.apps.${var.cluster_name}.${var.base_domain}).

  • oidc: OIDC configuration to be used by OAuth2 Proxy in front of Alertmanager (required).

  • deadmanssnitch_url: url of a Dead Man’s Snitch service Alertmanager should report to (by default this reporing is disabled).

  • slack_routes: list of objects configuring routing of alerts to Slack channels, with the following attributes:

  • name: name of the configured route.

  • channel: channel where the alerts will be sent (with '#').

  • api_url: slack URL you received when configuring a webhook integration.

  • matchers: list of strings for filtering which alerts will be sent.

  • continue: whether an alert should continue matching subsequent sibling nodes.

Type: any

Default: {}

metrics_storage_main

Description: Storage settings for the Thanos sidecar. Needs to be of type any because the structure is different depending on the variant used.

Type: any

Default: {}

dataproxy_timeout

Description: Variable to set the time when a query times out. This applies to all the Grafana’s data sources and can be manually configured per data source if desired.

Type: number

Default: 30

Outputs

The following outputs are exported:

id

Description: ID to pass other modules in order to refer to this module as a dependency.

grafana_admin_password

Description: The admin password for Grafana.

Reference in table format

Show tables

= Requirements

Name Version

argocd

>= 5

kubernetes

>= 2

null

>= 3

random

>= 3

utils

>= 1

= Providers

Name Version

random

>= 3

null

>= 3

argocd

>= 5

kubernetes

>= 2

utils

>= 1

= Resources

Name Type

argocd_application.this

resource

argocd_project.this

resource

kubernetes_namespace.kube_prometheus_stack_namespace

resource

kubernetes_secret.thanos_object_storage_secret

resource

null_resource.dependencies

resource

null_resource.this

resource

random_password.grafana_admin_password

resource

random_password.oauth2_cookie_secret

resource

utils_deep_merge_yaml.values

data source

= Inputs

Name Description Type Default Required

cluster_name

Name given to the cluster. Value used for naming some the resources created by the module.

string

n/a

yes

base_domain

Base domain of the cluster. Value used for the ingress' URL of the application.

string

n/a

yes

subdomain

Subdomain of the cluster. Value used for the ingress' URL of the application.

string

"apps"

no

argocd_project

Name of the Argo CD AppProject where the Application should be created. If not set, the Application will be created in a new AppProject only for this Application.

string

null

no

argocd_labels

Labels to attach to the Argo CD Application resource.

map(string)

{}

no

destination_cluster

Destination cluster where the application should be deployed.

string

"in-cluster"

no

target_revision

Override of target revision of the application chart.

string

"v10.1.0"

no

cluster_issuer

SSL certificate issuer to use. Usually you would configure this value as letsencrypt-staging or letsencrypt-prod on your root *.tf files.

string

"selfsigned-issuer"

no

helm_values

Helm chart value overrides. They should be passed as a list of HCL structures.

any

[]

no

deep_merge_append_list

A boolean flag to enable/disable appending lists instead of overwriting them.

bool

false

no

app_autosync

Automated sync options for the Argo CD Application resource.

 
object({
    allow_empty = optional(bool)
    prune       = optional(bool)
    self_heal   = optional(bool)
  })
 
{
  "allow_empty": false,
  "prune": true,
  "self_heal": true
}

no

dependency_ids

n/a

map(string)

{}

no

resources

Resource limits and requests for kube-prometheus-stack’s components. Follow the style on official documentation to understand the format of the values.

These are not production values. You should always adjust them to your needs. 
object({

    prometheus = optional(object({
      requests = optional(object({
        cpu    = optional(string, "250m")
        memory = optional(string, "512Mi")
      }), {})
      limits = optional(object({
        cpu    = optional(string)
        memory = optional(string, "1024Mi")
      }), {})
    }), {})

    prometheus_operator = optional(object({
      requests = optional(object({
        cpu    = optional(string, "50m")
        memory = optional(string, "128Mi")
      }), {})
      limits = optional(object({
        cpu    = optional(string)
        memory = optional(string, "128Mi")
      }), {})
    }), {})

    thanos_sidecar = optional(object({
      requests = optional(object({
        cpu    = optional(string, "100m")
        memory = optional(string, "256Mi")
      }), {})
      limits = optional(object({
        cpu    = optional(string)
        memory = optional(string, "512Mi")
      }), {})
    }), {})

    alertmanager = optional(object({
      requests = optional(object({
        cpu    = optional(string, "50m")
        memory = optional(string, "128Mi")
      }), {})
      limits = optional(object({
        cpu    = optional(string)
        memory = optional(string, "256Mi")
      }), {})
    }), {})

    kube_state_metrics = optional(object({
      requests = optional(object({
        cpu    = optional(string, "50m")
        memory = optional(string, "128Mi")
      }), {})
      limits = optional(object({
        cpu    = optional(string)
        memory = optional(string, "128Mi")
      }), {})
    }), {})

    grafana = optional(object({
      requests = optional(object({
        cpu    = optional(string, "250m")
        memory = optional(string, "512Mi")
      }), {})
      limits = optional(object({
        cpu    = optional(string)
        memory = optional(string, "512Mi")
      }), {})
    }), {})

    node_exporter = optional(object({
      requests = optional(object({
        cpu    = optional(string, "50m")
        memory = optional(string, "128Mi")
      }), {})
      limits = optional(object({
        cpu    = optional(string)
        memory = optional(string, "128Mi")
      }), {})
    }), {})

  })

{}

no

grafana

Grafana settings

any

{}

no

prometheus

Prometheus settings

any

{}

no

alertmanager

Object containing Alertmanager settings. The following attributes are supported:

  • enabled: whether Alertmanager is deployed or not (default: true).

  • domain: domain name configured in the Ingress (default: prometheus.apps.${var.cluster_name}.${var.base_domain}).

  • oidc: OIDC configuration to be used by OAuth2 Proxy in front of Alertmanager (required).

  • deadmanssnitch_url: url of a Dead Man’s Snitch service Alertmanager should report to (by default this reporing is disabled).

  • slack_routes: list of objects configuring routing of alerts to Slack channels, with the following attributes:

  • name: name of the configured route.

  • channel: channel where the alerts will be sent (with '#').

  • api_url: slack URL you received when configuring a webhook integration.

  • matchers: list of strings for filtering which alerts will be sent.

  • continue: whether an alert should continue matching subsequent sibling nodes.

any

{}

no

metrics_storage_main

Storage settings for the Thanos sidecar. Needs to be of type any because the structure is different depending on the variant used.

any

{}

no

dataproxy_timeout

Variable to set the time when a query times out. This applies to all the Grafana’s data sources and can be manually configured per data source if desired.

number

30

no

= Outputs

Name Description

id

ID to pass other modules in order to refer to this module as a dependency.

grafana_admin_password

The admin password for Grafana.