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AWS EKS: reduce the number of reserved IPs
4 min read
If you are trying to run a EKS cluster on a small subnet you might run out of IPs sooner that you might think. Every time it has to attach or detach IPs an API call needs to be made, so to avoid getting API calls throttled it pre-reserves some
16/05/2022
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Kubernetes: How to identify when and how an object has been modified
3 min read
In the same way we can use git blame to identify who and when has modified a specific line, with kubectl blame we'll be able to do the same to Kubernetes objects
13/05/2022
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Java: JVM DNS cache settings
2 min read
One of the annoyances of running workloads in a JVM is taking into account that it has it's own DNS cache: It's easy to forgot about it when troubleshooting an issue so we might end up not understanding the problem at all
11/05/2022
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Install AWS cloud provider on a k3s cluster
2 min read
One of the drawbacks of installing k3s on a EC2 instance versus using EKS is that we loose the AWS integration, so we cannot use AWS load balancers by default. Thanks to the AWS cloud provider we can overcome this limitation
10/05/2022
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Connect via ssh to a minikube node
3 min read
minikube is a great tool for testing: For some activities we might need to access via ssh to the kubernetes nodes, minikube even provides a command to do it so we don't even have to break a sweat
09/05/2022
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