Category Archives: Virtualization

In computing, virtualization refers to the act of creating a virtual version of something, including virtual computer hardware platforms, storage devices, and computer network resources.

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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Helm: multiple deployment of the same chart with Chart’s dependency
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19 August 2023

To improve the performance of Grafana Loki, it is necessary to install several almost identical instances of Memcached, see Grafana Loki: performance optimization with Recording Rules, caching, and parallel queries. The monitoring stack itself is deployed from one Helm chart, which dependencies – Promtail, Loki, etc – are added through the dependency field of the… Read More: Helm: multiple deployment of the same chart with Chart’s dependency0… »

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Grafana Loki: performance optimization with Recording Rules, caching, and parallel queries
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19 August 2023

So, we have Loki installed from the chart in simple-scale mode, see Grafana Loki: architecture and running in Kubernetes with AWS S3 storage and boltdb-shipper. Loki is runnings on an AWS Elastic Kubernetes Service cluster, installed with Loki Helm chart, AWS S3 is used as a long-term store, and BoltDB Shipper is used to work… Read More: Grafana Loki: performance optimization with Recording Rules, caching, and parallel… »

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AWS: Grafana Loki, InterZone traffic in AWS, and Kubernetes nodeAffinity
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19 August 2023

Traffic in AWS is generally quite an interesting and sometimes complicated thing, I once wrote about it in the AWS: Cost optimization – services expenses overview and traffic costs in AWS. Now, it’s time to return to this topic again. So, what’s the problem: in AWS Cost Explorer, I’ve noticed that we have an increase… Read More: AWS: Grafana Loki, InterZone traffic in AWS, and Kubernetes nodeAffinity0… »

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VictoriaMetrics: deploying a Kubernetes monitoring stack
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23 July 2023

Now we have VictoriaMetrics + Grafana on a regular EC2 instance, launched with Docker Compose, see the VictoriaMetrics: an overview and its use instead of Prometheus. It was kind of a Proof of Concept, and it’s time to launch it “in an adult way” – in Kubernetes and all the configurations stored in a GitHub… Read More: VictoriaMetrics: deploying a Kubernetes monitoring stack0 (0) »

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AWS: CDK and Python – installing EBS CSI driver Add-On on EKS
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23 July 2023

Let’s continue with AWS CDK and Python. I’m not writing because I like CDK, but because there are quite a few examples on the Internet for AWS CDK with Python, so let them at least be here. So, we have a cluster – AWS: CDK and Python – building an EKS cluster, and general impressions… Read More: AWS: CDK and Python – installing EBS CSI driver Add-On… »

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AWS: Kubernetes – AWS Secrets Manager and Parameter Store integration
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22 July 2023

Storing access data in Kubernetes Secrets has an important drawback, because they are only available within the Kubernetes cluster itself. To make them available to external services, we can use Hashicorp Vault and integrate it with Kubernetes using solutions such as vault-k8sor use services from AWS – Secrets Manager or Parameter Store. Integrating AWS Secrets Manager and Parameter Store… Read More: AWS: Kubernetes – AWS Secrets Manager and Parameter Store integration0… »

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AWS: CDK and Python – configure an IAM OIDC Provider, and install Kubernetes Controllers
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22 July 2023

So we have an AWS EKS cluster built with AWS CDK and Python – AWS: CDK and Python – building an EKS cluster, and general impressions of CDK, and we have an idea of how IRSA works – AWS: EKS, OpenID Connect, and ServiceAccounts. The next step after deploying the cluster is to configure the OIDC… Read More: AWS: CDK and Python – configure an IAM OIDC Provider,… »

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AWS: CDK and Python – building an EKS cluster, and general impressions of CDK
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22 July 2023

So, Terraform is great, but so far in our project, we have decided to create the first AWS EKS clusters using the AWS CDK, because firstly, it is already on the project, and secondly, it is very interesting to try a new tool. Today we will see what came out of it, and how a… Read More: AWS: CDK and Python – building an EKS cluster, and… »

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AWS: EKS, OpenID Connect, and ServiceAccounts
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8 July 2023

Currently, I’m setting up a new EKS cluster. Among other things, I’m running ExternalDNS on it, which uses a Kubernetes ServiceAccount to authenticate to AWS in order to be able to make changes to the domain zone in Route53. However, I forgot to configure the Identity Provider in AWS IAM and ExternalDNS threw an error:… Read More: AWS: EKS, OpenID Connect, and ServiceAccounts0 (0) »

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