terraform-aws-redis-elasticache

A Terraform module to create an Amazon Web Services (AWS) Redis ElastiCache cluster.

Usage

resource "aws_sns_topic" "global" {
  ...
}

resource "aws_elasticache_subnet_group" "redis" {
  ...
}

resource "aws_elasticache_parameter_group" "redis" {
  ...
}

module "cache" {
  source = "github.com/azavea/terraform-aws-redis-elasticache"

  vpc_id                     = "vpc-20f74844"
  cache_identifier           = "cache"
  automatic_failover_enabled = "false"
  desired_clusters           = "1"
  instance_type              = "cache.t2.micro"
  engine_version             = "3.2.4"
  parameter_group            = "${aws_elasticache_parameter_group.redis.name}"
  subnet_group               = "${aws_elasticache_subnet_group.redis.name}"
  maintenance_window         = "sun:02:30-sun:03:30"
  notification_topic_arn     = "${aws_sns_topic.global.arn}"

  alarm_cpu_threshold    = "75"
  alarm_memory_threshold = "10000000"
  alarm_actions          = ["${aws_sns_topic.global.arn}"]

  project     = "Unknown"
  environment = "Unknown"
}

Variables

vpc_id - ID of VPC meant to house the cache
project - Name of the project making use of the cluster (default: Unknown)
environment - Name of environment the cluster is targeted for (default: Unknown)
cache_identifier - Name used as ElastiCache cluster ID
automatic_failover_enabled - Flag to determine if automatic failover should be enabled
desired_clusters - Number of cache clusters in replication group
instance_type - Instance type for cache instance (default: cache.t2.micro)
engine_version - Cache engine version (default: 3.2.4)
parameter_group - Cache parameter group name (default: redis3.2)
subnet_group - Cache subnet group name
maintenance_window - Time window to reserve for maintenance
notification_topic_arn - ARN to notify when cache events occur
alarm_cpu_threshold - CPU alarm threshold as a percentage (default: 75)
alarm_memory_threshold - Free memory alarm threshold in bytes (default: 10000000)
alarm_actions - ARN to be notified via CloudWatch when alarm thresholds are triggered

Outputs

id - The replication group ID
cache_security_group_id - Security group ID of the cache cluster
port - Port of replication group leader
endpoint - Public DNS name of replication group leader

License

azavea/terraform-aws-redis-elasticache

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