• bestby: Refresh Pods based on it's lifetime using a label on it's definition

    3 min read

    Kubernetes Pod lifetime bestby

    For Kubernetes a Deployment is an object to define a Pod that is intended to permanently run on the cluster, so there's no native way to refresh it's Pods. To do so we can install the bestby controller.

    04/03/2022

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  • Install Crossplane on AWS with the Jet provider

    3 min read

    crossplane kubernetes aws s3 jet provider

    To start creating resources on AWS we can choose the AWS native provider or go with the Jet provider that uses terraform's AWS provider under the hood to generate a Crossplane provider

    02/03/2022

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  • Kubernetes: label vs annotation

    1 min read

    kubernetes label annotation

    On Kubernetes there are two main ways of attaching metedata to objects un Kubernetes: Labels and Annotation.

    What's the difference? When should I choose one over the other?

    01/03/2022

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  • Install Crossplane on AWS with the native provider

    4 min read

    crossplane kubernetes aws s3 native provider

    Crossplane is an open source Kubernetes add-on that lets you create cloud resources using Kubernetes objects (CRDs). It's installation it's straightforward, but once we have it installed the key it to properly configure it's providers. Here we are going to use the crossplane's native AWS provider

    28/02/2022

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  • How to debug a crossplane provider

    4 min read

    crossplane kubernetes troubleshooting debug

    To be able to setup a crossplane provider there are some pieces that need to be aligned to be able to use it. For example, if we want to setup the AWS provider using an IAM Role for ServiceAccount. If something is missaligned, we might end up with an error while creating resources that doesn't really clarify what's the actual error: 

    $ kubectl describe bucket.s3.aws.crossplane.io/test-bucket
Name:         test-bucket
Namespace:    
Labels:       <none>
Annotations:  crossplane.io/external-name: pet2cattle-demo
API Version:  s3.aws.crossplane.io/v1beta1
Kind:         Bucket
Metadata:
(...)
Spec:
(...)
  Provider Config Ref:
    Name:  aws-provider
Status:
  At Provider:
    Arn:  
  Conditions:
    Last Transition Time:  2022-02-22T21:43:23Z
    Message:               observe failed: failed to query Bucket: api error MovedPermanently: Moved Permanently
    Reason:                ReconcileError
    Status:                False
    Type:                  Synced
Events:
  Type     Reason                         Age               From                                 Message
  ----     ------                         ----              ----                                 -------
  Warning  CannotObserveExternalResource  7s (x6 over 36s)  managed/bucket.s3.aws.crossplane.io  failed to query Bucket: api error MovedPermanently: Moved Permanently

    23/02/2022

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Kubernetes:
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