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How to test terraform's HCL code
2 min read
To be able to learn about new terraform functions we can use terraform output to learn how a variable is modified. But this can take a while if we have a lot of resources to compute.
Instead, if we know the values we want to use beforehand it might be easier and quicker to use terraform console
22/04/2022
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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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Kubernetes: Autoscaling using Prometheus as a external metrics provider
5 min read
Using an external metrics provider (Kubernetes 1.10+) we can use an HorizontalPodAutoscaler to automatically scale applications using any metric collected by Prometheus. Let's take a look on how to configure it
05/04/2022
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