Awesome

This component is responsible for provisioning ElastiCache Redis clusters.

Usage

Stack Level: Regional

Here's an example snippet for how to use this component.

stacks/catalog/elasticache/elasticache-redis/defaults.yaml file (default settings for all Redis clusters):

components:
  terraform:
    elasticache-redis:
      vars:
        enabled: true
        name: "elasticache-redis"
        family: redis6.x
        ingress_cidr_blocks: []
        egress_cidr_blocks: ["0.0.0.0/0"]
        port: 6379
        at_rest_encryption_enabled: true
        transit_encryption_enabled: false
        apply_immediately: false
        automatic_failover_enabled: false
        cloudwatch_metric_alarms_enabled: false
        snapshot_retention_limit: 1
        redis_clusters:
          redis-main:
            num_replicas: 1
            num_shards: 0
            replicas_per_shard: 0
            engine: "redis"
            engine_version: 6.0.5
            instance_type: cache.t2.small
            parameters:
              - name: notify-keyspace-events
                value: "lK"

stacks/org/ou/account/region.yaml file (imports and overrides the default settings for a specific cluster):

import:
  - catalog/elasticache/elasticache-redis/defaults.yaml

components:
  terraform:
    elasticache-redis:
      vars:
        enabled: true
        redis_clusters:
          redis-main:
            num_replicas: 1
            num_shards: 0
            replicas_per_shard: 0
            engine_version: 6.0.5
            instance_type: cache.t2.small
            parameters:
              - name: notify-keyspace-events
                value: lK

The engine can either be redis or valkey. For more information, see why aws supports valkey.

Requirements

Name	Version
<a name="requirement_terraform"></a> terraform	>= 1.0.0
<a name="requirement_aws"></a> aws	>= 4.0

Providers

No providers.

Modules

Name	Source	Version
<a name="module_dns_delegated"></a> dns_delegated	cloudposse/stack-config/yaml//modules/remote-state	1.5.0
<a name="module_eks"></a> eks	cloudposse/stack-config/yaml//modules/remote-state	1.5.0
<a name="module_iam_roles"></a> iam_roles	../account-map/modules/iam-roles	n/a
<a name="module_redis_clusters"></a> redis_clusters	./modules/redis_cluster	n/a
<a name="module_this"></a> this	cloudposse/label/null	0.25.0
<a name="module_vpc"></a> vpc	cloudposse/stack-config/yaml//modules/remote-state	1.5.0
<a name="module_vpc_ingress"></a> vpc_ingress	cloudposse/stack-config/yaml//modules/remote-state	1.5.0

Resources

No resources.

Inputs

Name	Description	Type	Default	Required
<a name="input_additional_tag_map"></a> additional_tag_map	Additional key-value pairs to add to each map in `tags_as_list_of_maps`. Not added to `tags` or `id`.<br/>This is for some rare cases where resources want additional configuration of tags<br/>and therefore take a list of maps with tag key, value, and additional configuration.	`map(string)`	`{}`	no
<a name="input_allow_all_egress"></a> allow_all_egress	If `true`, the created security group will allow egress on all ports and protocols to all IP address.<br/>If this is false and no egress rules are otherwise specified, then no egress will be allowed.	`bool`	`true`	no
<a name="input_allow_ingress_from_this_vpc"></a> allow_ingress_from_this_vpc	If set to `true`, allow ingress from the VPC CIDR for this account	`bool`	`true`	no
<a name="input_allow_ingress_from_vpc_stages"></a> allow_ingress_from_vpc_stages	List of stages to pull VPC ingress cidr and add to security group	`list(string)`	`[]`	no
<a name="input_apply_immediately"></a> apply_immediately	Apply changes immediately	`bool`	n/a	yes
<a name="input_at_rest_encryption_enabled"></a> at_rest_encryption_enabled	Enable encryption at rest	`bool`	n/a	yes
<a name="input_attributes"></a> attributes	ID element. Additional attributes (e.g. `workers` or `cluster`) to add to `id`,<br/>in the order they appear in the list. New attributes are appended to the<br/>end of the list. The elements of the list are joined by the `delimiter`<br/>and treated as a single ID element.	`list(string)`	`[]`	no
<a name="input_auth_token_enabled"></a> auth_token_enabled	Enable auth token	`bool`	`true`	no
<a name="input_auto_minor_version_upgrade"></a> auto_minor_version_upgrade	Specifies whether minor version engine upgrades will be applied automatically to the underlying Cache Cluster instances during the maintenance window. Only supported if the engine version is 6 or higher.	`bool`	`false`	no
<a name="input_automatic_failover_enabled"></a> automatic_failover_enabled	Enable automatic failover	`bool`	n/a	yes
<a name="input_availability_zones"></a> availability_zones	Availability zone IDs	`list(string)`	`[]`	no
<a name="input_cloudwatch_metric_alarms_enabled"></a> cloudwatch_metric_alarms_enabled	Boolean flag to enable/disable CloudWatch metrics alarms	`bool`	n/a	yes
<a name="input_context"></a> 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, tags, and additional_tag_map, which are merged.	`any`	<pre>{<br/> "additional_tag_map": {},<br/> "attributes": [],<br/> "delimiter": null,<br/> "descriptor_formats": {},<br/> "enabled": true,<br/> "environment": null,<br/> "id_length_limit": null,<br/> "label_key_case": null,<br/> "label_order": [],<br/> "label_value_case": null,<br/> "labels_as_tags": [<br/> "unset"<br/> ],<br/> "name": null,<br/> "namespace": null,<br/> "regex_replace_chars": null,<br/> "stage": null,<br/> "tags": {},<br/> "tenant": null<br/>}</pre>	no
<a name="input_delimiter"></a> delimiter	Delimiter to be used between ID elements.<br/>Defaults to `-` (hyphen). Set to `""` to use no delimiter at all.	`string`	`null`	no
<a name="input_descriptor_formats"></a> descriptor_formats	Describe additional descriptors to be output in the `descriptors` output map.<br/>Map of maps. Keys are names of descriptors. Values are maps of the form<br/>`{<br/> format = string<br/> labels = list(string)<br/>}`<br/>(Type is `any` so the map values can later be enhanced to provide additional options.)<br/>`format` is a Terraform format string to be passed to the `format()` function.<br/>`labels` is a list of labels, in order, to pass to `format()` function.<br/>Label values will be normalized before being passed to `format()` so they will be<br/>identical to how they appear in `id`.<br/>Default is `{}` (`descriptors` output will be empty).	`any`	`{}`	no
<a name="input_eks_component_names"></a> eks_component_names	The names of the eks components	`set(string)`	`[]`	no
<a name="input_eks_security_group_enabled"></a> eks_security_group_enabled	Use the eks default security group	`bool`	`false`	no
<a name="input_enabled"></a> enabled	Set to false to prevent the module from creating any resources	`bool`	`null`	no
<a name="input_environment"></a> environment	ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT'	`string`	`null`	no
<a name="input_family"></a> family	Redis family	`string`	n/a	yes
<a name="input_id_length_limit"></a> id_length_limit	Limit `id` to this many characters (minimum 6).<br/>Set to `0` for unlimited length.<br/>Set to `null` for keep the existing setting, which defaults to `0`.<br/>Does not affect `id_full`.	`number`	`null`	no
<a name="input_ingress_cidr_blocks"></a> ingress_cidr_blocks	CIDR blocks for permitted ingress	`list(string)`	n/a	yes
<a name="input_label_key_case"></a> label_key_case	Controls the letter case of the `tags` keys (label names) for tags generated by this module.<br/>Does not affect keys of tags passed in via the `tags` input.<br/>Possible values: `lower`, `title`, `upper`.<br/>Default value: `title`.	`string`	`null`	no
<a name="input_label_order"></a> label_order	The order in which the labels (ID elements) appear in the `id`.<br/>Defaults to ["namespace", "environment", "stage", "name", "attributes"].<br/>You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present.	`list(string)`	`null`	no
<a name="input_label_value_case"></a> label_value_case	Controls the letter case of ID elements (labels) as included in `id`,<br/>set as tag values, and output by this module individually.<br/>Does not affect values of tags passed in via the `tags` input.<br/>Possible values: `lower`, `title`, `upper` and `none` (no transformation).<br/>Set this to `title` and set `delimiter` to `""` to yield Pascal Case IDs.<br/>Default value: `lower`.	`string`	`null`	no
<a name="input_labels_as_tags"></a> labels_as_tags	Set of labels (ID elements) to include as tags in the `tags` output.<br/>Default is to include all labels.<br/>Tags with empty values will not be included in the `tags` output.<br/>Set to `[]` to suppress all generated tags.<br/>Notes:<br/> The value of the `name` tag, if included, will be the `id`, not the `name`.<br/> Unlike other `null-label` inputs, the initial setting of `labels_as_tags` cannot be<br/> changed in later chained modules. Attempts to change it will be silently ignored.	`set(string)`	<pre>[<br/> "default"<br/>]</pre>	no
<a name="input_multi_az_enabled"></a> multi_az_enabled	Multi AZ (Automatic Failover must also be enabled. If Cluster Mode is enabled, Multi AZ is on by default, and this setting is ignored)	`bool`	`false`	no
<a name="input_name"></a> name	ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.<br/>This is the only ID element not also included as a `tag`.<br/>The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input.	`string`	`null`	no
<a name="input_namespace"></a> 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
<a name="input_port"></a> port	Port number	`number`	n/a	yes
<a name="input_redis_clusters"></a> redis_clusters	Redis cluster configuration	`map(any)`	n/a	yes
<a name="input_regex_replace_chars"></a> regex_replace_chars	Terraform regular expression (regex) string.<br/>Characters matching the regex will be removed from the ID elements.<br/>If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits.	`string`	`null`	no
<a name="input_region"></a> region	AWS region	`string`	n/a	yes
<a name="input_snapshot_retention_limit"></a> snapshot_retention_limit	The number of days for which ElastiCache will retain automatic cache cluster snapshots before deleting them.	`number`	`0`	no
<a name="input_stage"></a> stage	ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'	`string`	`null`	no
<a name="input_tags"></a> tags	Additional tags (e.g. `{'BusinessUnit': 'XYZ'}`).<br/>Neither the tag keys nor the tag values will be modified by this module.	`map(string)`	`{}`	no
<a name="input_tenant"></a> tenant	ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for	`string`	`null`	no
<a name="input_transit_encryption_enabled"></a> transit_encryption_enabled	Enable TLS	`bool`	n/a	yes

Outputs

Name	Description
<a name="output_redis_clusters"></a> redis_clusters	Redis cluster objects

References

cloudposse/terraform-aws-components - Cloud Posse's upstream component

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Related Projects

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Cloud Posse Terraform Modules - Our collection of reusable Terraform modules used by our reference architectures.
Atmos - Atmos is like docker-compose but for your infrastructure

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This project is maintained by <a href="https://cpco.io/homepage?utm_source=github&utm_medium=readme&utm_campaign=cloudposse-terraform-components/aws-elasticache-redis&utm_content=">Cloud Posse, LLC</a>. <a href="https://cpco.io/homepage?utm_source=github&utm_medium=readme&utm_campaign=cloudposse-terraform-components/aws-elasticache-redis&utm_content="><img src="https://cloudposse.com/logo-300x69.svg" align="right" /></a>

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