• Kubernetes Pod: Share a temporal Volume across containers

  2 min read

  
  

  If we need to be able to share some data across containers (one generates the data and the other one consumes it) we can use an emptyDir to create a Volume to mount on both containers.

  30/06/2021

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• What's the meaning of the sections of a kubeconfig file?

  2 min read

  
  

  The configuration file kubeconfig (~/.kube/config) is used to get access to a Kubernetes cluster. It looks like a Kubernetes object that defines the cluster, the user and the context to use:

  apiVersion: v1
  kind: Config
  preferences: {}
  
  clusters:
  (...)
  
  users:
  (...)
  
  contexts:
  (...)
  

  Let's take a minikube kubeconfig as an example

  29/06/2021

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• How to use ConfigMap on Kubernetes

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  A ConfigMap an object intended to store configuration for other objects to use. To create a config map we just need to add the data we want to store on the configmap as keys on the data section:

  apiVersion: v1
  kind: ConfigMap
  metadata:
    name: demo-configmap
  data:
    file1.txt: |
      this is an example
  
    file2.txt: |
      this is another example
  

  28/06/2021

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• git: Get a diff between branches

  1 min read

  If you want to compare the differences between two branches on git, it's quite straightforward: We just need to tell from which branch to witch one we want to do the diff

  25/06/2021

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• terraform resource time_sleep: Waiting for resources to be ready before using them

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  Some times we need to wait some time before using some of the resources to give some time to the previous resources to be ready. For this kind of situations we can use the resource time_sleep combined with depends_on to achieve this functionality on terraform

  23/06/2021

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