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terraform: How to calculate subnets using the cidrsubnet function
3 min read
If we are using terraform for creating subnets on AWS we are going to need to split the VPC's network range into several pieces, one for each AZ. We can let terraform handle all the details by using the cidrsubnet() function
20/04/2022
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Keeping the terraform state in a Kubernetes Secret
2 min read
Storing the terraform state into a S3 bucket with dynamoDB for locking has become the de facto standard for being able to share the state across an organization. Nevertheless, there are interesting alternatives: We can use a Kubernetes Secret
19/04/2022
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terraform: Get the latest AMI id
2 min read
Hard coding values is never a good idea, using the aws_ami datasource we can query AWS to fetch the latest AMI available, or any AMI really, as long as we properly set the filters so than just one AMI is selected.
06/04/2022
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terraform: Update a Lambda function when the code changes
2 min read
If we are using the archive_file datasource to zip some Lambda function to be able to push it to AWS, we need to se the source_code_hash with it's hash to make sure the function gets updated when it changes:
01/04/2022
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terraform: Retrieving values from a map using the lookup function
2 min read
When using HCL, if we want to access an element within a map we can use the usual index access present on many other languages. By using the lookup function we can do exactly that but providing a default value in case there's no such key.
18/03/2022
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Terraform:
Infrastructure as Code