ElastiCache Engine Version

01 Sign in to the AWS Management Console.

02 Navigate to Amazon ElastiCache console available at https://console.aws.amazon.com/elasticache/.

03 For Redis cache clusters:

1. In the main navigation panel, under Resources, choose Redis caches to access the cache clusters created with Redis.
2. Click on the name (link) of the Redis cache cluster that you want to examine.
3. In the Cluster details section, check the Engine version attribute value to identify the Redis cache engine version installed for the selected cluster. Compare the Engine version value with latest Redis engine version supported by Amazon ElastiCache, listed on this page. If there is a newer Redis engine version supported by Amazon ElastiCache, the cache engine version installed on the selected Redis cluster should be upgraded to benefit from all the security and performance improvements that come with the latest engine version.

04 For Memcached cache clusters:

1. In the navigation panel, under Resources, choose Memcached caches to access the cache clusters created with Memcached.
2. Click on the name (link) of the Memcached cache cluster that you want to examine.
3. In the Cluster details section, check the Engine version attribute value to identify the Memcached cache engine version installed for the selected cluster. Compare the Engine version value with latest Memcached engine version supported by Amazon ElastiCache, listed on this page. If there is a newer Memcached engine version supported by Amazon ElastiCache, the cache engine version installed on the selected Memcached cluster should be upgraded to benefit from all the security and performance improvements that come with the latest engine version.

05 Repeat steps no. 3 and 4 for each Amazon ElastiCache cluster provisioned within the current AWS region.

06 Change the AWS cloud region from the navigation bar and repeat the Audit process for other regions.

01 For Redis cache clusters:

1. Run describe-cache-clusters command (OSX/Linux/UNIX) with custom output filters to list the identifier (name) of each Redis cache cluster available in the selected AWS region:
   123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899

   aws elasticache describe-cache-clusters
     --region us-east-1
     --output table
     --query 'CacheClusters[?(Engine==`redis`)].CacheClusterId'
   

2. The command output should return a table with the requested resource names:
   123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899

   -------------------------------------
   |       DescribeCacheClusters       |
   +-----------------------------------+
   |  cc-production-redis-cluster-001  |
   |  cc-production-redis-cluster-001  |
   +-----------------------------------+
   

3. Run again describe-cache-clusters command (OSX/Linux/UNIX) with the name of the Redis cache cluster that you want to examine as the identifier parameter and custom output filters to describe the Redis cache engine version installed on the selected cache engine:
   123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899

   aws elasticache describe-cache-clusters
     --region us-east-1
     --cache-cluster-id cc-production-redis-cluster-001
     --query 'CacheClusters[*].EngineVersion'
   

4. The command output should return the Redis cache engine version:
   123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899

   [
   	"5.0.6"
   ]
   

   
   Compare the engine version returned by the describe-cache-clusters command output with latest Redis engine version supported by Amazon ElastiCache, listed on this page. If there is a newer Redis engine version supported by Amazon ElastiCache, the cache engine version installed on the selected Redis cluster should be upgraded to benefit from all the security and performance improvements that come with the latest version.

02 For Memcached cache clusters:

1. Run describe-cache-clusters command (OSX/Linux/UNIX) to list the name of each Memcached cache cluster available in the selected AWS cloud region:
   123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899

   aws elasticache describe-cache-clusters
     --region us-east-1
     --output table
     --query 'CacheClusters[?(Engine==`memcached`)].CacheClusterId'
   

2. The command output should return a table with the requested cluster names:
   123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899

   -------------------------------------
   |       DescribeCacheClusters       |
   +-----------------------------------+
   |  cc-production-memcache-cluster   |
   |  cc-backend-app-memcache-cluster  |
   +-----------------------------------+
   

3. Run describe-cache-clusters command (OSX/Linux/UNIX) with the name of the Memcached cache cluster that you want to examine as the identifier parameter, to describe the Memcached cache engine version installed on the selected cache cluster:
   123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899

   aws elasticache describe-cache-clusters
     --region us-east-1
     --cache-cluster-id cc-production-memcache-cluster
     --query 'CacheClusters[*].EngineVersion'
   

4. The command output should return the Memcached cache engine version:
   123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899

   [
   	"1.5.10"
   ]
   

   
   Compare the engine version returned by the describe-cache-clusters command output with latest Memcached engine version supported by Amazon ElastiCache, listed on this page. If there is a newer Memcached engine version supported by Amazon ElastiCache, the cache engine version installed on the selected Memcached cluster should be upgraded to benefit from all the security and performance improvements that come with the latest version.

03 Repeat steps no. 1 and 2 for each Amazon ElastiCache cluster provisioned in the selected AWS region.

04 Change the AWS cloud region by updating the --region command parameter value and repeat steps no. 1 – 3 to perform the Audit process for other regions.

01 CloudFormation template (JSON):

{
	"AWSTemplateFormatVersion": "2010-09-09",
	"Description": "Upgrade Memcached Cache Engine to Latest Supported Version",
	"Resources": {
		"MemcachedCacheCluster": {
			"Type": "AWS::ElastiCache::CacheCluster",
			"Properties": {
				"ClusterName": "cc-memcached-cluster",
				"Engine": "memcached",
				"NumCacheNodes": "2",
				"CacheNodeType": "cache.t2.micro",
				"PreferredAvailabilityZone": "us-east-1b",
				"VpcSecurityGroupIds": ["sg-0abcd1234abcd1234"],
				"EngineVersion": "1.6.6"
			}
		}
	}
}

02 CloudFormation template (YAML):

AWSTemplateFormatVersion: '2010-09-09'
	Description: Upgrade Memcached Cache Engine to Latest Supported Version
	Resources:
		MemcachedCacheCluster:
		Type: AWS::ElastiCache::CacheCluster
		Properties:
			ClusterName: cc-memcached-cluster
			Engine: memcached
			NumCacheNodes: '2'
			CacheNodeType: cache.t2.micro
			PreferredAvailabilityZone: us-east-1b
			VpcSecurityGroupIds:
			- sg-0abcd1234abcd1234
			EngineVersion: 1.6.6

01 Terraform configuration file (.tf):

terraform {
	required_providers {
		aws = {
			source  = "hashicorp/aws"
			version = "~> 4.0"
		}
	}

	required_version = ">= 0.14.9"
}

provider "aws" {
	region  = "us-east-1"
}

resource "aws_elasticache_cluster" "memcached-cache-cluster" {

	cluster_id           = "cc-memcached-cluster"
	engine               = "memcached"
	node_type            = "cache.t2.micro"
	num_cache_nodes      = 2
	availability_zone    = "us-east-1b"
	parameter_group_name = "default.memcached1.6"
	security_group_ids   = ["sg-0abcd1234abcd1234"]

	# Upgrade Memcached Cache Engine to Latest Supported Version
	engine_version       = "1.6.6"
	apply_immediately    = true

}

01 CloudFormation template (JSON):

{
	"AWSTemplateFormatVersion": "2010-09-09",
	"Description": "Upgrade Redis Cache Engine to Latest Supported Version",
	"Resources": {
		"RedisReplicationGroup": {
			"Type": "AWS::ElastiCache::ReplicationGroup",
			"Properties": {
				"ReplicationGroupId": "cc-redis-cache-cluster",
				"ReplicationGroupDescription": "Production Replication Group",
				"NumCacheClusters": "2",
				"CacheNodeType": "cache.t2.micro",
				"CacheParameterGroupName": "default.redis6.x",
				"Engine": "redis",
				"EngineVersion": "6.2"
			}
		}
	}
}

02 CloudFormation template (YAML):

AWSTemplateFormatVersion: '2010-09-09'
	Description: Upgrade Redis Cache Engine to Latest Supported Version
	Resources:
		RedisReplicationGroup:
		Type: AWS::ElastiCache::ReplicationGroup
		Properties:
			ReplicationGroupId: cc-redis-cache-cluster
			ReplicationGroupDescription: Production Replication Group
			NumCacheClusters: '2'
			CacheNodeType: cache.t2.micro
			CacheParameterGroupName: default.redis6.x
			Engine: redis
			EngineVersion: '6.2'

01 Terraform configuration file (.tf):

terraform {
	required_providers {
		aws = {
			source  = "hashicorp/aws"
			version = "~> 4.0"
		}
	}

	required_version = ">= 0.14.9"
}

provider "aws" {
	region  = "us-east-1"
}

resource "aws_elasticache_replication_group" "redis-cache-cluster" {

	replication_group_id        = "cc-redis-cache-cluster"
	description                 = "Production Replication Group"
	engine                      = "redis"
	node_type                   = "cache.t2.micro"
	num_cache_clusters          = 2
	parameter_group_name        = "default.redis6.x"

	# Upgrade Redis Cache Engine to Latest Supported Version
	engine_version              = "6.2"
	apply_immediately           = true

}