Yearly Archives: 2025

VictoriaMetrics: migrating VMSingle and VictoriaLogs data between Kubernetes cluster

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 »

Terraform: using import, and some hidden pitfalls

15 June 2025
 

 Terraform has two ways to bring existing resources under Terraform management – using the Terraform CLI and the terraform import command, or using the import resource. Why might we need to import resources? if we already have a manually configured (the “clickops”) service that we want to bring under Terraform management (for example, the common… Read More »

AI: Introduction to Ollama for local LLM launch

31 May 2025
 

 I would really like to play with some LLMs locally, because it will allow to better understand the nuances of their work. It’s like getting acquainted with AWS without having dealt with at least VirtualBox before – working with the AWS Console or AWS API will not give an understanding of what is happening under… Read More »

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AI: What is the MCP?

21 May 2025
 

 Everyone around us is talking about MCPs all the time, and it’s time to understand the topic. So, today we will deal with the basic concepts – “what it is in general”, then we will write our own “micro-MCP server”, and in the next post – something more real, about working with VictoriaLogs. LLM Limitations… Read More »

Python: introduction to the Celery, and its monitoring configurations

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 »

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

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 »