Arseny Zinchenko articles - 250 total
AWS: Monitoring AWS OpenSearch Service Cluster with CloudWatch
Let’s continue our journey with AWS OpenSearch Service. What we have is a small AWS OpenSearch...
Terraform: creating an AWS OpenSearch Service cluster and users
In the first part, we covered the basics of AWS OpenSearch Service in general and the types of...
Terraform: using Ephemeral Resources and Write-Only Attributes
Ephemeral resources and write-only arguments appeared in Terraform a long time ago, back in version...
Terraform: AWS EKS Terraform module update from version 20.x to version 21.x
AWS EKS Terraform module version v21.0.0 added support for the AWS Provider Version...
Kubernetes: PVC in a StatefulSet, and the “Forbidden updates to statefulset spec” error
Kubernetes: PVC in StatefulSet, and the “Forbidden updates to statefulset spec” error We...
Kubernetes: what are the Kubernetes Operator and CustomResourceDefinition
Perhaps everyone has used operators in Kubernetes, for example, PostgreSQL operator,...
AWS: creating an OpenSearch Service cluster and configuring authentication and authorization
In the previous part, AWS: Getting Started with OpenSearch Service as a Vector Store, we looked at...
Kubernetes: Kubernetes API, API groups, CRDs, and the etcd
I actually started to write about creating my own Kubernetes Operator, but decided to make a...
Kubernetes: Pod resources.requests, resources.limits and Linux cgroup
Kubernetes: Pod resources.requests, resources.limits, and Linux cgroups How exactly do...
AWS: introduction to the OpenSearch Service as a vector store
We are currently using AWS OpenSearch Service as a vector store for our RAG with AWS Bedrock...
VictoriaLogs: the "rate limit exceeded" error and monitoring ingested logs
We use two systems for collecting logs in the project: Grafana Loki and VictoriaLogs, to which...
VictoriaMetrics: migrating VMSingle and VictoriaLogs data between Kubernetes clusters
We have VictoriaMetrics and VictoriaLogs running on an AWS Elastic Kubernetes Service cluster. We...
Terraform: using import, and some hidden pitfalls
Terraform has two ways to bring existing resources under Terraform management — using the Terraform...
AI: Introduction to Ollama for local LLM launch
I would really like to play with some LLMs locally, because it will allow to better understand the...
Kubernetes: 503 errors with AWS ALB possible causes and solutions
After migration to a new EKS cluster, we started getting alerts about 503 errors sometimes. The...
Terraform: data types, loops, indexes, and the "resource must be replaced" issue
We have an automation for AWS IAM that creates EKS Access Entries to give AWS IAM Users access to...
TCP/IP: OSI and TCP/IP models, TCP packets, Linux sockets and ports
It’s difficult to describe in one post what thousands of books have been written about in a...
Python: introduction to the Celery, and its monitoring configurations
To put it very simply, Celery is something we can use to perform tasks outside of our main...
AI: writing an MCP server for VictoriaLogs
In the previous article, we figured out what an MCP is in general, and created a basic MCP server...
AI: What is the MCP?
Everyone around us is talking about MCPs all the time, and it’s time to understand the topic. So,...
Python: introduction to @decorators using FastAPI as an example
The last time I used decorators in Python was about 10 years ago, in Python 2. I want to refresh my...
Nexus: Configuring Docker proxy repository, and ContainerD in Kubernetes
I wrote about launching Nexus in the Nexus: launch in Kubernetes, and PyPI caching repository...
PostgreSQL: using EXPLAIN and setting up “auto_explain” in AWS RDS
I have already mentioned the EXPLAIN feature in the PostgreSQL: AWS RDS Performance and monitoring...
PostgreSQL: AWS RDS Performance and monitoring
We are migrating our Backend API from DynamoDB to AWS RDS PostgreSQL, and several times RDS...
VictoriaLogs: creating Recording Rules with VMAlert
We continue the migration from Grafana Loki to VictoriaLogs, and the next task is to transfer...
Nexus: running in Kubernetes, and setting up a PyPI caching repository
We run GitHub Runners in Kubernetes to build and deploy our Backend API, see GitHub Actions:...
Kubernetes: a single AWS Load Balancer for different Kubernetes Ingresses
One day, we looked at our AWS costs on AWS Load Balancers and understood that we needed to decrease...
Vector.dev: introduction, AWS S3 logs, and integration with VictoriaLogs
So, we’re back to the topic of AWS VPC Flow Logs, VictoriaLogs, and the Grafana dashboard. In the...
VictoriaLogs: a Grafana dashboard for AWS VPC Flow Logs — migrating from Grafana Loki
VictoriaLogs: a Grafana dashboard for AWS VPC Flow Logs — migrating from Grafana Loki In...
AWS: VPC Flow Logs — logs to S3 and Grafana dashboard with Loki
AWS: VPC Flow Logs — logs to S3 and Grafana dashboard with Loki Continuing the topic...