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Pod hooks: postStart and preStop
2 min read
If we need to execute some actions at container startup of before stopping the container we can me use of the container lifecycle hooks
24/09/2021
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Kubernetes: Remove taint from node
2 min read
With a taint on a node we can repel Pods as we saw on the post regarding taints and tolerations. So, if we want to taint a node we use kubectl taint as follows:
$ kubectl taint nodes minikube application=example:NoSchedule node/minikube taintedHow do we untaint a node?
13/09/2021
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How to configure an application to use SecurityGroups for Pods
4 min read
To be able to configure SecurityGroups we will have:
- Install SecurityGroups for Pods on the EKS cluster
- Configure the application to be able to actually use SecurityGroup for a Pods (this post)
This is what needs to be done considering that we are going to use an ALB to direct traffic to the application.
26/08/2021
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How to install SecurityGroups for Pods on an AWS EKS clusters
4 min read
To be able to configure SecurityGroups at the Pod level, we have two very differentiated tasks:
- Install SecurityGroups for Pods on the EKS cluster (this post)
- Configure the application to be able to actually use it
Let's take a look at what needs to be done on the cluster side.
25/08/2021
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Kubernetes readinessProbe: testing container's availability
1 min read
Some applications might temporally not being able to server traffic due to some work it is doing: For example, loading data, contacting with external services... If we want to have a way to temporally disable traffic without restarting the application we will need to configure a readinessProbe
24/08/2021
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