In order for the network load balancer to execute a Health Check, you need to create a security group using the IP addresses of the load balancer. Unfortunately, you cannot obtain the ip addresses of the load balancers in CloudFormation. This forces you to grant access to the entire VPC CIDR or the relevant subnet CIDRs in which the load balancer is deployed.
With this custom CloudFormation Provider you can obtain the actual private ip addresses of the load balancers, allowing you to create a security group to explicitly grant access to a specific load balancer.Read more...
On July the 12th, 2018, Amazon announced the availability of Provisioned throughput for EFS volumes. This is a very valuable feature for anybody using EFS. Unfortunately, it can only be enabled through the Console or the API. Although the Console is nice for playing around, it is not suitable for engineering solutions on AWS. With this custom provider you can specify provisioned throughput for EFS in CloudFormation, 4 days after the release!
On August the 8th, we discovered that the properties
ProvisionedThroughputInMibs can now be set in AWS::EFS::FileSystem, making this provider obsolete!
The original version of cfn-flip is a command line tool that converts CloudFormation templates from JSON to YAML and vice versa. This tool has existed for some time and does the job magnificently. Most people find YAML more readable. I belong to the minority that finds JSON easier to read.Read more...