Terraform module to provision an Elasticsearch cluster with built-in integrations with Kibana and Logstash.

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Introduction

This module will create:

Elasticsearch cluster with the specified node count in the provided subnets in a VPC
Elasticsearch domain policy that accepts a list of IAM role ARNs from which to permit management traffic to the cluster
Security Group to control access to the Elasticsearch domain (inputs to the Security Group are other Security Groups or CIDRs blocks to be allowed to connect to the cluster)
DNS hostname record for Elasticsearch cluster (if DNS Zone ID is provided)
DNS hostname record for Kibana (if DNS Zone ID is provided)

NOTE: To enable zone awareness to deploy Elasticsearch nodes into two different Availability Zones, you need to set zone_awareness_enabled to true and provide two different subnets in subnet_ids. If you enable zone awareness for your domain, Amazon ES places an endpoint into two subnets. The subnets must be in different Availability Zones in the same region. If you don't enable zone awareness, Amazon ES places an endpoint into only one subnet. You also need to set availability_zone_count to 1.

Usage

module "elasticsearch" {
  source = "cloudposse/elasticsearch/aws"
  # Cloud Posse recommends pinning every module to a specific version
  # version     = "x.x.x"
  namespace               = "eg"
  stage                   = "dev"
  name                    = "es"
  dns_zone_id             = "Z14EN2YD427LRQ"
  security_groups         = ["sg-XXXXXXXXX", "sg-YYYYYYYY"]
  vpc_id                  = "vpc-XXXXXXXXX"
  subnet_ids              = ["subnet-XXXXXXXXX", "subnet-YYYYYYYY"]
  zone_awareness_enabled  = true
  elasticsearch_version   = "6.5"
  instance_type           = "t2.small.elasticsearch"
  instance_count          = 4
  ebs_volume_size         = 10
  iam_role_arns           = ["arn:aws:iam::XXXXXXXXX:role/ops", "arn:aws:iam::XXXXXXXXX:role/dev"]
  iam_actions             = ["es:ESHttpGet", "es:ESHttpPut", "es:ESHttpPost"]
  encrypt_at_rest_enabled = true
  kibana_subdomain_name   = "kibana-es"

  advanced_options = {
    "rest.action.multi.allow_explicit_index" = "true"
  }
}

Important

In Cloud Posse's examples, we avoid pinning modules to specific versions to prevent discrepancies between the documentation and the latest released versions. However, for your own projects, we strongly advise pinning each module to the exact version you're using. This practice ensures the stability of your infrastructure. Additionally, we recommend implementing a systematic approach for updating versions to avoid unexpected changes.

Examples

Here is a working example of using this module:

examples/complete

Here are automated tests for the complete example using bats and Terratest (which tests and deploys the example on AWS):

test

Makefile Targets

Available targets:

  help                                Help screen
  help/all                            Display help for all targets
  help/short                          This help short screen
  lint                                Lint terraform code

Requirements

Name	Version
terraform	>= 1.3
aws	>= 3.35.0

Providers

Name	Version
aws	>= 3.35.0

Modules

Name	Source	Version
domain_hostname	cloudposse/route53-cluster-hostname/aws	0.12.3
kibana_hostname	cloudposse/route53-cluster-hostname/aws	0.12.3
kibana_label	cloudposse/label/null	0.25.0
this	cloudposse/label/null	0.25.0
user_label	cloudposse/label/null	0.25.0

Resources

Name	Type
aws_elasticsearch_domain.default	resource
aws_elasticsearch_domain_policy.default	resource
aws_iam_role.elasticsearch_user	resource
aws_iam_service_linked_role.default	resource
aws_opensearch_domain.default	resource
aws_opensearch_domain_policy.default	resource
aws_security_group.default	resource
aws_security_group_rule.egress	resource
aws_security_group_rule.ingress_cidr_blocks	resource
aws_security_group_rule.ingress_security_groups	resource
aws_iam_policy_document.assume_role	data source
aws_iam_policy_document.default	data source

Inputs

Name	Description	Type	Default	Required
additional_tag_map	Additional key-value pairs to add to each map in `tags_as_list_of_maps`. Not added to `tags` or `id`. This is for some rare cases where resources want additional configuration of tags and therefore take a list of maps with tag key, value, and additional configuration.	`map(string)`	`{}`	no
advanced_options	Key-value string pairs to specify advanced configuration options	`map(string)`	`{}`	no
advanced_security_options_enabled	AWS Elasticsearch Kibana enchanced security plugin enabling (forces new resource)	`bool`	`false`	no
advanced_security_options_internal_user_database_enabled	Whether to enable or not internal Kibana user database for ELK OpenDistro security plugin	`bool`	`false`	no
advanced_security_options_master_user_arn	ARN of IAM user who is to be mapped to be Kibana master user (applicable if advanced_security_options_internal_user_database_enabled set to false)	`string`	`""`	no
advanced_security_options_master_user_name	Master user username (applicable if advanced_security_options_internal_user_database_enabled set to true)	`string`	`""`	no
advanced_security_options_master_user_password	Master user password (applicable if advanced_security_options_internal_user_database_enabled set to true)	`string`	`""`	no
allowed_cidr_blocks	List of CIDR blocks to be allowed to connect to the cluster	`list(string)`	`[]`	no
anonymous_iam_actions	List of actions to allow for the anonymous (``) IAM roles, e.g.* `es:ESHttpGet`, `es:ESHttpPut`, `es:ESHttpPost`	`list(string)`	`[]`	no
attributes	ID element. Additional attributes (e.g. `workers` or `cluster`) to add to `id`, in the order they appear in the list. New attributes are appended to the end of the list. The elements of the list are joined by the `delimiter` and treated as a single ID element.	`list(string)`	`[]`	no
auto_tune	This object represents the auto_tune configuration. It contains the following filed: - enabled - Whether to enable autotune. - rollback_on_disable - Whether to roll back to default Auto-Tune settings when disabling Auto-Tune. - starting_time - Date and time at which to start the Auto-Tune maintenance schedule in RFC3339 format. Time should be in the future. - cron_schedule - A cron expression specifying the recurrence pattern for an Auto-Tune maintenance schedule. - duration - Autotune maintanance window duration time in hours.	object({ enabled = bool rollback_on_disable = string starting_time = string cron_schedule = string duration = number })	{ "cron_schedule": null, "duration": null, "enabled": false, "rollback_on_disable": "NO_ROLLBACK", "starting_time": null }	no
automated_snapshot_start_hour	Hour at which automated snapshots are taken, in UTC	`number`	`0`	no
availability_zone_count	Number of Availability Zones for the domain to use.	`number`	`2`	no
aws_ec2_service_name	AWS EC2 Service Name	`list(string)`	[ "ec2.amazonaws.com" ]	no
aws_service_type	The type of AWS service to deploy (`elasticsearch` or `opensearch`).	`string`	`"elasticsearch"`	no
cognito_authentication_enabled	Whether to enable Amazon Cognito authentication with Kibana	`bool`	`false`	no
cognito_iam_role_arn	ARN of the IAM role that has the AmazonESCognitoAccess policy attached	`string`	`""`	no
cognito_identity_pool_id	The ID of the Cognito Identity Pool to use	`string`	`""`	no
cognito_user_pool_id	The ID of the Cognito User Pool to use	`string`	`""`	no
cold_storage_enabled	Enables cold storage support.	`bool`	`false`	no
context	Single object for setting entire context at once. See description of individual variables for details. Leave string and numeric variables as `null` to use default value. Individual variable settings (non-null) override settings in context object, except for attributes, tags, and additional_tag_map, which are merged.	`any`	{ "additional_tag_map": {}, "attributes": [], "delimiter": null, "descriptor_formats": {}, "enabled": true, "environment": null, "id_length_limit": null, "label_key_case": null, "label_order": [], "label_value_case": null, "labels_as_tags": [ "unset" ], "name": null, "namespace": null, "regex_replace_chars": null, "stage": null, "tags": {}, "tenant": null }	no
create_elasticsearch_user_role	Whether to create an IAM role for Users/EC2 to assume to access the Elasticsearch domain. Set it to `false` if you already manage access through other means.	`bool`	`true`	no
create_iam_service_linked_role	Whether to create `AWSServiceRoleForAmazonElasticsearchService` service-linked role. Set it to `false` if you already have an ElasticSearch cluster created in the AWS account and AWSServiceRoleForAmazonElasticsearchService already exists. See hashicorp/terraform-provider-aws#5218 for more info	`bool`	`true`	no
create_security_group	Whether to create a dedicated security group for the Elasticsearch domain. Set it to `false` if you already have security groups that you want to attach to the domain and specify them in the `security_groups` variable.	`bool`	`true`	no
custom_endpoint	Fully qualified domain for custom endpoint.	`string`	`""`	no
custom_endpoint_certificate_arn	ACM certificate ARN for custom endpoint.	`string`	`""`	no
custom_endpoint_enabled	Whether to enable custom endpoint for the Elasticsearch domain.	`bool`	`false`	no
dedicated_master_count	Number of dedicated master nodes in the cluster	`number`	`0`	no
dedicated_master_enabled	Indicates whether dedicated master nodes are enabled for the cluster	`bool`	`false`	no
dedicated_master_type	Instance type of the dedicated master nodes in the cluster	`string`	`"t2.small.elasticsearch"`	no
delimiter	Delimiter to be used between ID elements. Defaults to `-` (hyphen). Set to `""` to use no delimiter at all.	`string`	`null`	no
descriptor_formats	Describe additional descriptors to be output in the `descriptors` output map. Map of maps. Keys are names of descriptors. Values are maps of the form `{<br/> format = string<br/> labels = list(string)<br/>}` (Type is `any` so the map values can later be enhanced to provide additional options.) `format` is a Terraform format string to be passed to the `format()` function. `labels` is a list of labels, in order, to pass to `format()` function. Label values will be normalized before being passed to `format()` so they will be identical to how they appear in `id`. Default is `{}` (`descriptors` output will be empty).	`any`	`{}`	no
dns_zone_id	Route53 DNS Zone ID to add hostname records for Elasticsearch domain and Kibana	`string`	`""`	no
domain_endpoint_options_enforce_https	Whether or not to require HTTPS	`bool`	`true`	no
domain_endpoint_options_tls_security_policy	The name of the TLS security policy that needs to be applied to the HTTPS endpoint	`string`	`"Policy-Min-TLS-1-0-2019-07"`	no
domain_hostname_enabled	Explicit flag to enable creating a DNS hostname for ES. If `true`, then `var.dns_zone_id` is required.	`bool`	`false`	no
ebs_iops	The baseline input/output (I/O) performance of EBS volumes attached to data nodes. Applicable only for the Provisioned IOPS EBS volume type	`number`	`0`	no
ebs_throughput	Specifies the throughput (in MiB/s) of the EBS volumes attached to data nodes. Applicable only for the gp3 volume type. Valid values are between 125 and 1000.	`number`	`null`	no
ebs_volume_size	EBS volumes for data storage in GB	`number`	`0`	no
ebs_volume_type	Storage type of EBS volumes	`string`	`"gp2"`	no
elasticsearch_subdomain_name	The name of the subdomain for Elasticsearch in the DNS zone (_e.g._ `elasticsearch`, `ui`, `ui-es`, `search-ui`)	`string`	`""`	no
elasticsearch_version	Version of Elasticsearch to deploy (_e.g._ `7.4`, `7.1`, `6.8`, `6.7`, `6.5`, `6.4`, `6.3`, `6.2`, `6.0`, `5.6`, `5.5`, `5.3`, `5.1`, `2.3`, `1.5`	`string`	`"7.4"`	no
enabled	Set to false to prevent the module from creating any resources	`bool`	`null`	no
encrypt_at_rest_enabled	Whether to enable encryption at rest	`bool`	`true`	no
encrypt_at_rest_kms_key_id	The KMS key ID to encrypt the Elasticsearch domain with. If not specified, then it defaults to using the AWS/Elasticsearch service KMS key	`string`	`""`	no
environment	ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT'	`string`	`null`	no
iam_actions	List of actions to allow for the user IAM roles, e.g. `es:ESHttpGet`, `es:ESHttpPut`, `es:ESHttpPost`	`list(string)`	`[]`	no
iam_authorizing_role_arns	List of IAM role ARNs to permit to assume the Elasticsearch user role	`list(string)`	`[]`	no
iam_role_arns	List of IAM role ARNs to permit access to the Elasticsearch domain	`list(string)`	`[]`	no
iam_role_max_session_duration	The maximum session duration (in seconds) for the user role. Can have a value from 1 hour to 12 hours	`number`	`3600`	no
iam_role_permissions_boundary	The ARN of the permissions boundary policy which will be attached to the Elasticsearch user role	`string`	`null`	no
id_length_limit	Limit `id` to this many characters (minimum 6). Set to `0` for unlimited length. Set to `null` for keep the existing setting, which defaults to `0`. Does not affect `id_full`.	`number`	`null`	no
ingress_port_range_end	End number for allowed port range. (e.g. `443`)	`number`	`65535`	no
ingress_port_range_start	Start number for allowed port range. (e.g. `443`)	`number`	`0`	no
instance_count	Number of data nodes in the cluster	`number`	`4`	no
instance_type	Elasticsearch instance type for data nodes in the cluster	`string`	`"t2.small.elasticsearch"`	no
kibana_hostname_enabled	Explicit flag to enable creating a DNS hostname for Kibana. If `true`, then `var.dns_zone_id` is required.	`bool`	`false`	no
kibana_subdomain_name	The name of the subdomain for Kibana in the DNS zone (_e.g._ `kibana`, `ui`, `ui-es`, `search-ui`, `kibana.elasticsearch`)	`string`	`""`	no
label_key_case	Controls the letter case of the `tags` keys (label names) for tags generated by this module. Does not affect keys of tags passed in via the `tags` input. Possible values: `lower`, `title`, `upper`. Default value: `title`.	`string`	`null`	no
label_order	The order in which the labels (ID elements) appear in the `id`. Defaults to ["namespace", "environment", "stage", "name", "attributes"]. You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present.	`list(string)`	`null`	no
label_value_case	Controls the letter case of ID elements (labels) as included in `id`, set as tag values, and output by this module individually. Does not affect values of tags passed in via the `tags` input. Possible values: `lower`, `title`, `upper` and `none` (no transformation). Set this to `title` and set `delimiter` to `""` to yield Pascal Case IDs. Default value: `lower`.	`string`	`null`	no
labels_as_tags	Set of labels (ID elements) to include as tags in the `tags` output. Default is to include all labels. Tags with empty values will not be included in the `tags` output. Set to `[]` to suppress all generated tags. Notes: The value of the `name` tag, if included, will be the `id`, not the `name`. Unlike other `null-label` inputs, the initial setting of `labels_as_tags` cannot be changed in later chained modules. Attempts to change it will be silently ignored.	`set(string)`	[ "default" ]	no
log_publishing_application_cloudwatch_log_group_arn	ARN of the CloudWatch log group to which log for ES_APPLICATION_LOGS needs to be published	`string`	`""`	no
log_publishing_application_enabled	Specifies whether log publishing option for ES_APPLICATION_LOGS is enabled or not	`bool`	`false`	no
log_publishing_audit_cloudwatch_log_group_arn	ARN of the CloudWatch log group to which log for AUDIT_LOGS needs to be published	`string`	`""`	no
log_publishing_audit_enabled	Specifies whether log publishing option for AUDIT_LOGS is enabled or not	`bool`	`false`	no
log_publishing_index_cloudwatch_log_group_arn	ARN of the CloudWatch log group to which log for INDEX_SLOW_LOGS needs to be published	`string`	`""`	no
log_publishing_index_enabled	Specifies whether log publishing option for INDEX_SLOW_LOGS is enabled or not	`bool`	`false`	no
log_publishing_search_cloudwatch_log_group_arn	ARN of the CloudWatch log group to which log for SEARCH_SLOW_LOGS needs to be published	`string`	`""`	no
log_publishing_search_enabled	Specifies whether log publishing option for SEARCH_SLOW_LOGS is enabled or not	`bool`	`false`	no
name	ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'. This is the only ID element not also included as a `tag`. The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input.	`string`	`null`	no
namespace	ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique	`string`	`null`	no
node_to_node_encryption_enabled	Whether to enable node-to-node encryption	`bool`	`false`	no
regex_replace_chars	Terraform regular expression (regex) string. Characters matching the regex will be removed from the ID elements. If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits.	`string`	`null`	no
security_groups	List of security group IDs to be allowed to connect to the cluster or the security group IDs to apply to the cluster when the `create_security_group` variable is set to false.	`list(string)`	`[]`	no
stage	ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'	`string`	`null`	no
subnet_ids	VPC Subnet IDs	`list(string)`	`[]`	no
tags	Additional tags (e.g. `{'BusinessUnit': 'XYZ'}`). Neither the tag keys nor the tag values will be modified by this module.	`map(string)`	`{}`	no
tenant	ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for	`string`	`null`	no
vpc_enabled	Set to false if ES should be deployed outside of VPC.	`bool`	`true`	no
vpc_id	VPC ID	`string`	`null`	no
warm_count	Number of UltraWarm nodes	`number`	`2`	no
warm_enabled	Whether AWS UltraWarm is enabled	`bool`	`false`	no
warm_type	Type of UltraWarm nodes	`string`	`"ultrawarm1.medium.elasticsearch"`	no
zone_awareness_enabled	Enable zone awareness for Elasticsearch cluster	`bool`	`true`	no

Outputs

Name	Description
domain_arn	ARN of the Elasticsearch domain
domain_endpoint	Domain-specific endpoint used to submit index, search, and data upload requests
domain_hostname	Elasticsearch domain hostname to submit index, search, and data upload requests
domain_id	Unique identifier for the Elasticsearch domain
domain_name	Name of the Elasticsearch domain
elasticsearch_user_iam_role_arn	The ARN of the IAM role to allow access to Elasticsearch cluster
elasticsearch_user_iam_role_name	The name of the IAM role to allow access to Elasticsearch cluster
kibana_endpoint	Domain-specific endpoint for Kibana without https scheme
kibana_hostname	Kibana hostname
security_group_id	Security Group ID to control access to the Elasticsearch domain

References

For additional context, refer to some of these links.

What is Amazon Elasticsearch Service - Complete description of Amazon Elasticsearch Service
Amazon Elasticsearch Service Access Control - Describes several ways of controlling access to Elasticsearch domains
VPC Support for Amazon Elasticsearch Service Domains - Describes Elasticsearch Service VPC Support and VPC architectures with and without zone awareness
Creating and Configuring Amazon Elasticsearch Service Domains - Provides a complete description on how to create and configure Amazon Elasticsearch Service (Amazon ES) domains
Kibana and Logstash - Describes some considerations for using Kibana and Logstash with Amazon Elasticsearch Service
Amazon Cognito Authentication for Kibana - Amazon Elasticsearch Service uses Amazon Cognito to offer user name and password protection for Kibana
Control Access to Amazon Elasticsearch Service Domain - Describes how to Control Access to Amazon Elasticsearch Service Domain
elasticsearch_domain - Terraform reference documentation for the elasticsearch_domain resource
elasticsearch_domain_policy - Terraform reference documentation for the elasticsearch_domain_policy resource

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README.md

README.md

👽 Use Atmos with Terraform

Introduction

Usage

Examples

Makefile Targets

Requirements

Providers

Modules

Resources

Inputs

Outputs

References

Use Terraform Reference Architectures for AWS

Day-0: Your Foundation for Success

Day-2: Your Operational Mastery

✨ Contributing

🌎 Slack Community

📰 Newsletter

📆 Office Hours

License

Trademarks

Files

README.md

Latest commit

History

README.md

File metadata and controls

👽 Use Atmos with Terraform

Introduction

Usage

Examples

Makefile Targets

Requirements

Providers

Modules

Resources

Inputs

Outputs

References

Use Terraform Reference Architectures for AWS

Day-0: Your Foundation for Success

Day-2: Your Operational Mastery

✨ Contributing

🌎 Slack Community

📰 Newsletter

📆 Office Hours

License

Trademarks