Category Archives: HOWTO’s

GitHub Actions: Docker build to AWS ECR and Helm chart deployment to AWS EKS
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7 October 2023

So, we have a deployed Kubernetes cluster – see the Terraform: Creating EKS, Part 1 – VPCs, Subnets, and Endpoints series. And we have a GitHub Actions workflow to deploy it – see GitHub Actions: Deploying Dev/Prod environments with Terraform. It’s time to start deploying our backend to Kubernetes. Here we will use GitHub Actions… Read More: GitHub Actions: Docker build to AWS ECR and Helm chart… »

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GitHub Actions: deploying Dev/Prod environments with Terraform
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30 September 2023

Now that we have Terraform code ready to deploy an AWS Elastic Kubernetes Service cluster (see Terraform: Building EKS, part 1 – VPC, Subnets and Endpoints and subsequent parts), it’s time to think about automation, that is, creating pipelines in CI/CD that would create new environments for testing features, or deploy updates to the Dev/Prod… Read More: GitHub Actions: deploying Dev/Prod environments with Terraform0 (0) »

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Terraform: building EKS, part 4 – installing controllers
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16 September 2023

The last, fourth part, in which we will install the rest of the controllers and add a couple of useful little things. All the parts: Terraform: building EKS, part 1 – VPC, Subnets and Endpoints Terraform: building EKS, part 2 – an EKS cluster, WorkerNodes, and IAM Terraform: building EKS, part 3 – Karpenter installation… Read More: Terraform: building EKS, part 4 – installing controllers0 (0) »

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Terraform: building EKS, part 3 – Karpenter installation
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16 September 2023

This is the third part of deploying an AWS Elastic Kubernetes Service cluster with Terraform, in which we will add Karpenter to our cluster. I’ve decided to post this separately because it’s quite a long post. And in the next and final (hopefully!), the fourth part, we will add the rest – all kinds of… Read More: Terraform: building EKS, part 3 – Karpenter installation0 (0) »

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Terraform: Building EKS, part 1 – VPC, Subnets and Endpoints
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10 September 2023

So, now that we’ve been reminded a bit about Terraform’s data types and loops, it’s time to start building something real. The first thing we will deploy with Terraform is the AWS Elastic Kubernetes Service cluster and all the resources associated with it because now it is done with AWS CDK, and in addition to… Read More: Terraform: Building EKS, part 1 – VPC, Subnets and Endpoints0… »

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Terraform: remote state with AWS S3, and state locking with DynamoDB
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3 September 2023

We are preparing to transfer infrastructure management from AWS CDK to Terraform. I’ve already wrote about planning it in the Terraform: planning a new project with Dev/Prod environments post, but there I didn’t wrote about one very important option – creating a lock for state files. State file locking is used to avoid situations where… Read More: Terraform: remote state with AWS S3, and state locking with… »

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VictoriaMetrics: VMAuth – Proxy, Authentication, and Authorization
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27 August 2023

We continue to develop our monitoring stack. See the first part – VictoriaMetrics: creating a Kubernetes monitoring stack with its own Helm chart. What do we want to do next: give access to developers so that they can set Silence for alerts themselves in Alertmanager to avoid spamming Slack, see Prometheus: Alertmanager Web UI alerts Silence.… Read More: VictoriaMetrics: VMAuth – Proxy, Authentication, and Authorization0 (0) »

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AWS: Getting started with Karpenter for autoscaling in EKS, and its installation with Helm
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19 August 2023

On all my previous projects where Kubernetes was, for its WorkerNodes scaling I’ve used the Cluster Autoscaler (CAS) because actually there were no other options before. In general, CAS worked well, but in November 2020 AWS released its own solution for scaling nodes in EKS – the Karpenter, and if at first time reviews were… Read More: AWS: Getting started with Karpenter for autoscaling in EKS, and… »

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Kubernetes: Pods and WorkerNodes – control the placement of the Pods on the Nodes
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19 August 2023

Kubernetes allows very flexible control over how its Pods will be located on servers, i.e. WorkerNodes. This can be useful if you need to run a pod on a specific node configuration, for example – a WorkerNode must have a GPU, or an SSD instead of an HDD. Another example is when you need to… Read More: Kubernetes: Pods and WorkerNodes – control the placement of the… »

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