Terraform module to provision an ElastiCache Memcached Cluster
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It's 100% Open Source and licensed under the APACHE2.
We literally have hundreds of terraform modules that are Open Source and well-maintained. Check them out!
IMPORTANT: We do not pin modules to versions in our examples because of the difficulty of keeping the versions in the documentation in sync with the latest released versions. We highly recommend that in your code you pin the version to the exact version you are using so that your infrastructure remains stable, and update versions in a systematic way so that they do not catch you by surprise.
Also, because of a bug in the Terraform registry (hashicorp/terraform#21417), the registry shows many of our inputs as required when in fact they are optional. The table below correctly indicates which inputs are required.
For a complete example, see examples/complete.
For automated tests of the complete example using bats and Terratest (which tests and deploys the example on AWS), see test.
provider "aws" {
region = var.region
}
module "vpc" {
source = "git::https://github.com/cloudposse/terraform-aws-vpc.git?ref=tags/0.8.1"
namespace = var.namespace
stage = var.stage
name = var.name
cidr_block = "172.16.0.0/16"
}
module "subnets" {
source = "git::https://github.com/cloudposse/terraform-aws-dynamic-subnets.git?ref=tags/0.18.1"
availability_zones = var.availability_zones
namespace = var.namespace
stage = var.stage
name = var.name
vpc_id = module.vpc.vpc_id
igw_id = module.vpc.igw_id
cidr_block = module.vpc.vpc_cidr_block
nat_gateway_enabled = false
nat_instance_enabled = false
}
module "memcached" {
source = "cloudposse/elasticache-memcached/aws"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"
namespace = var.namespace
stage = var.stage
name = var.name
availability_zones = var.availability_zones
vpc_id = module.vpc.vpc_id
allowed_security_groups = [module.vpc.vpc_default_security_group_id]
subnets = module.subnets.private_subnet_ids
cluster_size = var.cluster_size
instance_type = var.instance_type
engine_version = var.engine_version
apply_immediately = true
zone_id = var.zone_id
}Review the complete example to see how to use this module.
Available targets:
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lint Lint terraform code
| Name | Version |
|---|---|
| terraform | >= 0.12.26 |
| aws | >= 2.0 |
| null | >= 2.0 |
| Name | Version |
|---|---|
| aws | >= 2.0 |
| null | >= 2.0 |
| Name | Description | Type | Default | Required |
|---|---|---|---|---|
| additional_tag_map | Additional tags for appending to tags_as_list_of_maps. Not added to tags. |
map(string) |
{} |
no |
| alarm_actions | Alarm actions | list(string) |
[] |
no |
| alarm_cpu_threshold_percent | CPU threshold alarm level | number |
75 |
no |
| alarm_memory_threshold_bytes | Alarm memory threshold bytes | number |
10000000 |
no |
| allowed_cidr_blocks | List of CIDR blocks that are allowed ingress to the cluster's Security Group created in the module | list(string) |
[] |
no |
| allowed_security_groups | List of Security Group IDs that are allowed ingress to the cluster's Security Group created in the module | list(string) |
[] |
no |
| apply_immediately | Specifies whether any database modifications are applied immediately, or during the next maintenance window | bool |
true |
no |
| attributes | Additional attributes (e.g. 1) |
list(string) |
[] |
no |
| availability_zones | List of Availability Zones for the cluster | list(string) |
n/a | yes |
| cluster_size | Cluster size | number |
1 |
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. |
object({ |
{ |
no |
| delimiter | Delimiter to be used between namespace, environment, stage, name and attributes.Defaults to - (hyphen). Set to "" to use no delimiter at all. |
string |
null |
no |
| elasticache_parameter_group_family | ElastiCache parameter group family | string |
"memcached1.5" |
no |
| elasticache_subnet_group_name | Subnet group name for the ElastiCache instance | string |
"" |
no |
| enabled | Set to false to prevent the module from creating any resources | bool |
null |
no |
| engine_version | Memcached engine version. For more info, see https://docs.aws.amazon.com/AmazonElastiCache/latest/mem-ug/supported-engine-versions.html | string |
"1.5.16" |
no |
| environment | Environment, e.g. 'uw2', 'us-west-2', OR 'prod', 'staging', 'dev', 'UAT' | string |
null |
no |
| existing_security_groups | List of existing Security Group IDs to place the cluster into. Set use_existing_security_groups to true to enable using existing_security_groups as Security Groups for the cluster |
list(string) |
[] |
no |
| id_length_limit | Limit id to this many characters.Set to 0 for unlimited length.Set to null for default, which is 0.Does not affect id_full. |
number |
null |
no |
| instance_type | Elastic cache instance type | string |
"cache.t2.micro" |
no |
| label_order | The naming order of the id output and Name tag. Defaults to ["namespace", "environment", "stage", "name", "attributes"]. You can omit any of the 5 elements, but at least one must be present. |
list(string) |
null |
no |
| maintenance_window | Maintenance window | string |
"wed:03:00-wed:04:00" |
no |
| max_item_size | Max item size | number |
10485760 |
no |
| name | Solution name, e.g. 'app' or 'jenkins' | string |
null |
no |
| namespace | Namespace, which could be your organization name or abbreviation, e.g. 'eg' or 'cp' | string |
null |
no |
| notification_topic_arn | Notification topic arn | string |
"" |
no |
| port | Memcached port | number |
11211 |
no |
| regex_replace_chars | Regex to replace chars with empty string in namespace, environment, stage and name.If not set, "/[^a-zA-Z0-9-]/" is used to remove all characters other than hyphens, letters and digits. |
string |
null |
no |
| stage | Stage, e.g. 'prod', 'staging', 'dev', OR 'source', 'build', 'test', 'deploy', 'release' | string |
null |
no |
| subnets | AWS subnet ids | list(string) |
[] |
no |
| tags | Additional tags (e.g. map('BusinessUnit','XYZ') |
map(string) |
{} |
no |
| use_existing_security_groups | Flag to enable/disable creation of Security Group in the module. Set to true to disable Security Group creation and provide a list of existing security Group IDs in existing_security_groups to place the cluster into |
bool |
false |
no |
| vpc_id | VPC ID | string |
"" |
no |
| zone_id | Route53 DNS Zone ID | string |
"" |
no |
| Name | Description |
|---|---|
| cluster_address | Cluster address |
| cluster_configuration_endpoint | Cluster configuration endpoint |
| cluster_id | Cluster ID |
| cluster_urls | Cluster URLs |
| hostname | Cluster hostname |
| security_group_id | Security Group ID |
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Check out these related projects.
- terraform-aws-elasticache-redis - Terraform module to provision an ElastiCache Redis Cluster
- terraform-aws-elasticache-cloudwatch-sns-alarms - Terraform module that configures CloudWatch SNS alerts for ElastiCache
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