Monthly Archives: September 2025

Terraform: creating an AWS OpenSearch Service cluster and users
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18 September 2025

In the first part, we covered the basics of AWS OpenSearch Service in general and the types of instances for Data Nodes – AWS: Getting Started with OpenSearch Service as a Vector Store. In the second part, we covered access, AWS: Creating an OpenSearch Service Cluster and Configuring Authentication and Authorization. Now let’s write Terraform… Read More »

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Terraform: using Ephemeral Resources and Write-Only Attributes
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16 September 2025

Ephemeral resources and write-only arguments appeared in Terraform a long time ago, back in version 1.10, but there was no opportunity to write about them in detail. The main idea behind them is not to leave “traces” in the state file, which is especially useful for passwords or tokens, because the data only exists during… Read More »

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AWS: introduction to the OpenSearch Service as a vector store
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15 September 2025

We are currently using AWS OpenSearch Service as a vector store for our RAG with AWS Bedrock Knowledge Base. We will talk more about RAG and Bedrock another time, but today let’s take a look at AWS OpenSearch Service. The task is to migrate our AWS OpenSearch Service Serverless to Managed, primarily due to (surprise)… Read More »

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AWS: creating an OpenSearch Service cluster and configuring authentication and authorization
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15 September 2025

In the previous part, AWS: Getting Started with OpenSearch Service as a Vector Store, we looked at AWS OpenSearch Service in general, figured out how data is organized in it, what shards and nodes are, and what types of instances we actually need for data nodes. The next step is to create a cluster and… Read More »

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Arch Linux: installing and configuring KDE Plasma in 2025
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14 September 2025

In the previous part – Arch Linux: installation in 2025 – disks, encryption, system installation – we installed the system itself, now we’ve gotten around to the working environment. Let’s go through the general settings of Arch Linux (more precisely, any Linux), then talk about the choice of Desktop Environments, and actually install and configure… Read More »

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VictoriaLogs: “rate limit exceeded” and monitoring ingested logs
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13 September 2025

We use two systems for collecting logs in the project: Grafana Loki and VictoriaLogs, to which Promtail simultaneously writes all collected logs. We cannot get rid of Loki: although developers have long since switched to VictoriaLogs, some alerts are still created from metrics generated by Loki, so it is still present in the system. And… Read More »

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