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Kubernetes: How to configure Deployment to evenly spread Pods across availability zones
5 min read
If you run Kubernetes workloads on AWS you want to make sure Pods are spread across all the available availability zones. To do so we can use podAntiAffinity to tell Kubernetes to avoid deploying all the Pods of the same deployment on the same AZ
28/03/2022
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ArgoCD redirect loop when using a Ingress objects with HTTPS offloading
3 min read
When enabling an Ingress for ArgoCD we might end up with a redirect loop: ArgoCD keeps redirecting to the main page using https, even tough it is already using https:
$ curl -I https://argocd.pet2cattle.com/ HTTP/2 307 date: Wed, 23 Mar 2022 22:38:31 GMT content-type: text/html; charset=utf-8 location: https://argocd.pet2cattle.com/This issue happens because, by default, ArgoCD expects to handle the TLS termination by itself, always redirecting HTTP requests to HTTPS. If we try to offload the TLS termination to the ingress controller, from ArgoCD's perspective the connection is HTTP, so it keeps redirecting to HTTPS
24/03/2022
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Crossplane: Share data between resources within the same Composite
6 min read
Following up on the previous crossplane example on Composition: creating a SecurityGroup and a SecurityGroupRule using a Composition we are now going to push information from one of the objects into the Composition and then push it back to the other resource:
The composistion is going to create a SecurityGroup and push it's ID up to the Composite's status. Once the ID is on the Composition, this will push this ID into the SecurityGroupRule to set the SecurityGroup's ID to which we want to create the rule
22/03/2022
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Run multiple multiple clusters with minikube
3 min read
Whenever we need to test something on a Kubernetes clusters one of the easier (and cheaper) option is test it out using minikube. However, how do we test a feature that require multiple clusters?
21/03/2022
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List all the images a minikube is using
2 min read
Running applications on minikube is a great test bed, but it can get messy pretty easily. That's specially true if there are several people messing with it.
It might be useful to retrieve all the images we are using to run the services. For this we can either describe all the Pods on all the Namespaces or check that the minikube image ls command
17/03/2022
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Kubernetes:
container orchestration
