Currently, we are able to collect our API Gateway logs from the CloudWatch Logs to Grafana Loki, see. Loki: collecting logs from CloudWatch Logs using Lambda Promtail. But in the process of migrating to Kubernetes, we have Application Load Balancers that can only write logs to S3, and we need…

We have a Kubernetes cluster, where WorkerNodes are scaled by Karpenter, and Karpenter has the disruption.consolidationPolicy=WhenUnderutilized parameter for its NodePool, and this means, that Karpenter will try to "consolidate" the placement of pods on Nodes in order to maximize the use of CPU and Memory resources. In general, everything works…

Some useful tips on using Liveness and Readiness Probes in Kubernetes — the difference between them, and how to properly configure these checks. To put it very briefly: livenessProbe: is used by Kubernetes to know when to perform a Pod restart readinessProbe: is used by Kubernetes to know when a…

In the Prometheus: running Pushgateway on Kubernetes with Helm and Terraform post I wrote about how to add Pushgateway to Prometheus, which allows using the Push model instead of Pull, that is, an Exporter can send metrics directly to the database instead of waiting for Prometheus or VMAgent to come…

So, Karpenter has made another big step towards the release, and in version 0.32 it has moved from Alpha to Beta. Let’s take a quick look at the changes — and they are quite significant — and then upgrade to EKS from Karpneter Terraform module and Karpenter Helm chart. The…

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…

With the data "terraform_remote_state" we can get the outputs of one project to use in another. For example, our AWS VPC is created separately from AWS EKS (although in the series Terraform: Building EKS, part 1 – VPC, Subnets and Endpoints VPCs were created as part of a cluster, but…

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…

Installation of Kubernetes components with Terraform — ExternalDNS, AWS Load Balancer Controller, SecretStore CSI Driver and ASCP, and add a Subscription Filter — 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