• Operator-SDK: Create a group of objects that can be queried together

  2 min read

  
  

  When you have several kubernetes objects (CRDs) that work together it can be useful to be able to query them all together to get a better idea of what's deployed without having to query all the individial resources. With operator-SDK we just need to annotate the objects.

  01/08/2023

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• Simplifying Input Parameters in Pulumi and AWS CDK Libraries

  2 min read

  
  

  Some libraries require you to use string pointers or custom objects for some input parameters, notable examples are Pulumi and AWS CDK. If we only need to provide some static value for it can be annoying to use.

  16/05/2023

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• Operator-SDK: Set custom fields for kubectl get

  2 min read

  
  

  When writing a custom Kubernetes operator using operator-sdk we might want to change the fields are show when running kubectl get:

  $ kubectl get example
  NAME   AGE
  demo   4h20m
  

  To do so, we'll need to add the additionalPrinterColumns field the the CustomResourceDefinition, but since we are using operator-sdk to take care of this, we'll need to use some annotations in the resource definition file.

  15/05/2023

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• Deploying Cloud Resources with Pulumi and LocalStack

  2 min read

  
  

  Pulumi is a powerful infrastructure as code tool that allows developers to deploy and manage cloud resources using familiar programming languages. However, when it comes to using Pulumi with LocalStack, there are some changes that need to be made to make Pulumi be able to reach LocalStack.

  25/04/2023

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• How to Change the Scope of a Kubernetes API Resource with Operator-SDK

  2 min read

  
  

  When creating a new API resource using the operator-sdk we can use the namespaced flag to make it Namespaced:

  $ operator-sdk create api --group group \
                            --version v1 \
                            --kind Example \
                            --resource \
                            --controller
  

  Or in the cluster scope:

  $ operator-sdk create api --group group \
                            --version v1 \
                            --kind Example \
                            --resource \
                            --controller \
                            --namespaced=false
  

  Maybe because we forgot to add the flag or because we have changed our mind, we don't need delete the object to change the scope of it, let's see how.

  05/04/2023

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