Get elasticache working

{{cookiecutter.project_slug}}/.ebextensions/20_elasticcache.config

@@ -0,0 +1,46 @@
+#This sample requires you to create a separate configuration file that defines the custom
+# option settings for CacheCluster properties.
+
+Resources:
+  MyCacheSecurityGroup:
+    Type: "AWS::EC2::SecurityGroup"
+    Properties:
+      GroupDescription: "Lock cache down to webserver access only"
+      SecurityGroupIngress :
+        - IpProtocol : "tcp"
+          FromPort :
+            Fn::GetOptionSetting:
+              OptionName : "CachePort"
+              DefaultValue: "6379"
+          ToPort :
+            Fn::GetOptionSetting:
+              OptionName : "CachePort"
+              DefaultValue: "6379"
+          SourceSecurityGroupName:
+            Ref: "AWSEBSecurityGroup"
+  MyElastiCache:
+    Type: "AWS::ElastiCache::CacheCluster"
+    Properties:
+      CacheNodeType:
+        Fn::GetOptionSetting:
+          OptionName : "CacheNodeType"
+          DefaultValue : "cache.t1.micro"
+      NumCacheNodes:
+        Fn::GetOptionSetting:
+          OptionName : "NumCacheNodes"
+          DefaultValue : "1"
+      Engine:
+        Fn::GetOptionSetting:
+          OptionName : "Engine"
+          DefaultValue : "redis"
+      VpcSecurityGroupIds:
+        -
+          Fn::GetAtt:
+            - MyCacheSecurityGroup
+            - GroupId
+
+Outputs:
+  ElastiCache:
+    Description : "ID of ElastiCache Cache Cluster with Redis Engine"
+    Value :
+      Ref : "MyElastiCache"

{{cookiecutter.project_slug}}/.ebextensions/30_options.config

@@ -0,0 +1,6 @@
+option_settings:
+  "aws:elasticbeanstalk:customoption":
+    CacheNodeType : cache.t1.micro
+    NumCacheNodes : 1
+    Engine : redis
+    CachePort : 6379

{{cookiecutter.project_slug}}/.ebextensions/40_python.config

@@ -4,6 +4,10 @@ container_commands:
     leader_only: True
   02_collectstatic:
     command: "source /opt/python/run/venv/bin/activate && python manage.py collectstatic --noinput"
+option_settings:
+  "aws:elasticbeanstalk:application:environment":
+    REDIS_ENDPOINT_ADDRESS: '`{ "Fn::GetAtt" : [ "MyElastiCache", "RedisEndpoint.Address"]}`'
+    REDIS_PORT: '`{ "Fn::GetAtt" : [ "MyElastiCache", "RedisEndpoint.Port"]}`'
 option_settings:
   "aws:elasticbeanstalk:container:python":
     WSGIPath: "config/wsgi.py"

{{cookiecutter.project_slug}}/config/settings/production.py

@@ -177,16 +177,39 @@ TEMPLATES[0]['OPTIONS']['loaders'] = [
 
 # DATABASE CONFIGURATION
 # ------------------------------------------------------------------------------
+{% if cookiecutter.use_elasticbeanstalk -%}
+# Uses Amazon RDS for database hosting, which doesn't follow the Heroku-style spec
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.postgresql_psycopg2',
+        'NAME': env('RDS_DB_NAME'),
+        'USER': env('RDS_USERNAME'),
+        'PASSWORD': env('RDS_PASSWORD'),
+        'HOST': env('RDS_HOSTNAME'),
+        'PORT': env('RDS_PORT'),
+    }
+}
+{% else %}
+# Use the Heroku-style specification
 # Raises ImproperlyConfigured exception if DATABASE_URL not in os.environ
 DATABASES['default'] = env.db('DATABASE_URL')
+{%- endif %}
 
 # CACHING
 # ------------------------------------------------------------------------------
+{% if cookiecutter.use_elasticbeanstalk -%}
+REDIS_LOCATION = "redis://{}:{}/0".format(
+    env('REDIS_ENDPOINT_ADDRESS'),
+    env('REDIS_PORT')
+)
+{% else %}
+REDIS_LOCATION = '{0}/{1}'.format(env('REDIS_URL', default='redis://127.0.0.1:6379'), 0)
+{%- endif %}
 # Heroku URL does not pass the DB number, so we parse it in
 CACHES = {
     'default': {
         'BACKEND': 'django_redis.cache.RedisCache',
-        'LOCATION': '{0}/{1}'.format(env('REDIS_URL', default='redis://127.0.0.1:6379'), 0),
+        'LOCATION': REDIS_LOCATION,
         'OPTIONS': {
             'CLIENT_CLASS': 'django_redis.client.DefaultClient',
             'IGNORE_EXCEPTIONS': True,  # mimics memcache behavior.