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.

VictoriaMetrics: migrating VMSingle and VictoriaLogs data between Kubernetes cluster
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5 July 2025

We have VictoriaMetrics and VictoriaLogs running on an AWS Elastic Kubernetes Service cluster. We do major upgrades to EKS by creating a new cluster, and therefore we have to transfer monitoring data from the old VMSingle instance to the new one. For VictoriaMetrics, there is the vmctl tool which can migrate data through the APIs… Read More: VictoriaMetrics: migrating VMSingle and VictoriaLogs data between Kubernetes cluster0 (0) »

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Python: introduction to the Celery, and its monitoring configurations
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20 May 2025

To put it very simply, Celery is something we can use to perform tasks outside of our main service. For example, there is a Backend API that has some kind of endpoint to which mobile devices send information that the user has created a new whatever in the application. The task of the Backend is… Read More: Python: introduction to the Celery, and its monitoring configurations0 (0) »

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Kubernetes: find a directory with a mounted volume in a Pod on its host
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18 May 2025

We have an AWS Elastic Kubernetes Service with the VictoriaMetrics stack deployed (see VictoriaMetrics: deploying a Kubernetes monitoring stack). I need to migrate the data from the old VMSingle Pod to the new one on the new cluster, and to do this, I need to find VMSingle’s data on an EC2. Note: regarding the migration… Read More: Kubernetes: find a directory with a mounted volume in a… »

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Nexus: Configuring Docker proxy repository, and ContainerD in Kubernetes
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17 May 2025

I wrote about launching Nexus in the Nexus: launch in Kubernetes, and PyPI caching repository configuration post, now I want to add Docker image caching to PyPI, especially since Docker Hub introduces new limits from April 1, 2025 – see Docker Hub usage and limits. We’ll do it as usual: first run manually locally on… Read More: Nexus: Configuring Docker proxy repository, and ContainerD in Kubernetes0 (0) »

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Nexus: launch in Kubernetes, and PyPI caching repository configuration
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17 May 2025

In Kubernetes, we run GitHub Runner for the build and deploy of our Backend API, see GitHub Actions: Running Actions Runner Controller in Kubernetes. But over time, we noticed that there was too much traffic on the NAT Gateway – see VictoriaLogs: a Grafana dashboard for AWS VPC Flow Logs – migrating from Grafana Loki.… Read More: Nexus: launch in Kubernetes, and PyPI caching repository configuration0 (0) »

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PostgreSQL: using EXPLAIN and setting up “auto_explain” in AWS RDS
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12 February 2025

I have already mentioned the EXPLAIN feature in the PostgreSQL: AWS RDS Performance and monitoring blog post, but this is such an interesting and useful thing that it’s worth talking about it separately. In addition, AWS RDS for PostgreSQL has the ability to enable Execution Plans logging with EXPLAIN, which is also useful for monitoring… Read More: PostgreSQL: using EXPLAIN and setting up “auto_explain” in AWS RDS0… »

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PostgreSQL: AWS RDS Performance and monitoring
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10 February 2025

We are migrating our Backend API from DynamoDB to AWS RDS PostgreSQL, and several times RDS crashed. Actually, given that we took db.t3.small with two vCPUs and two gigabytes of memory to save money, it was quite expected, but I wondered why everything was crashing. A few days later, I started to debug the issue,… Read More: PostgreSQL: AWS RDS Performance and monitoring0 (0) »

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Kubernetes: a single AWS Load Balancer for different Kubernetes Ingresses
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21 December 2024

One day, we looked at our AWS costs on AWS Load Balancers, and understood that we needed to decrease the spends a bit. What we wanted was to have one LoadBalancer, and through it to route requests to different Kubernetes Ingresses and Services in different Namespaces. The first thing that came to mind was either… Read More: Kubernetes: a single AWS Load Balancer for different Kubernetes Ingresses0… »

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Nexus: running in Kubernetes, and setting up a PyPI caching repository
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21 December 2024

We run GitHub Runners in Kubernetes to build and deploy our Backend API, see GitHub Actions: running the Actions Runner Controller in Kubernetes. But over time, we noticed that there was too much traffic on the NAT Gateway – see VictoriaLogs: a Grafana dashboard for AWS VPC Flow Logs – migrating from Grafana Loki. The… Read More: Nexus: running in Kubernetes, and setting up a PyPI caching… »

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Vector.dev: introduction, AWS S3 logs, and integration with VictoriaLogs
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21 December 2024

So, we’re back to the topic of AWS VPC Flow Logs, VictoriaLogs, and the Grafana dashboard. In the post VictoriaLogs: a Grafana dashboard for AWS VPC Flow Logs – migrating from Grafana Loki, we created a cool dashboard to display various statistics on AWS NAT Gateway traffic. But there is a small drawback: all the… Read More: Vector.dev: introduction, AWS S3 logs, and integration with VictoriaLogs0 (0) »

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