Interfaces in Go allow you to describe access to data or behavior without providing concrete implementations inside the interface itself. In this way, we create a “common bus” that we can then use to “connect” external “systems.” In other words, an interface is an abstraction that defines a contract. The contract describes what can be… Read More »
Every time I start installing Arch Linux, it’s like a new journey: it seems like nothing much has changed over the years, but every time something new happens. I’ve written about this a lot, and it’s time to write about it again because I bought a new laptop. At first, I was too lazy to… Read More »
The last time I’ve used decorators in Python about 10 years ago, in Python 2, and I want to refresh my memory a bit, because now I’ve started using them quite actively, so want to see how it works under the hood, and what it is in general. The post turned out a bit… weird?… Read More »
Another cool feature that Amazon showed back at the last re:Invent in November 2023 is changes in how AWS Elastic Kubernetes Service authenticates and authorizes users. And this applies not only to the cluster’s users, but also to its WorkerNodes. I mean, it’s not really a new scheme (November 2023) – but I just now… Read More »
I didn’t plan this post at all as I thought I would do it quickly, but it didn’t work out quickly, and I need to dig a little deeper into this topic. So, what we are talking about: we have AWS Load Balancers, logs from which are collected to Grafana Loki, see. Grafana Loki: collecting… Read More »
We have an AWS Elastic Kubernetes Service cluster with Karpenter which is responsible for EC2 auto-scaling, see AWS: Getting started with Karpenter for autoscaling in EKS, and its installation with Helm. In general, there are no problems with it so far, but in any case we need to monitor it. For its monitoring, Karpenter provides… Read More »
I updated my Arch Linux yesterday, and for the first time in 9 years of using this system, I encountered an error when after a reboot the system could not mount a disk: ERROR: device UUID not found. mount: /new_root: can’t find UUID. ERROR: Failed to mount UUID on real root. You are now being… Read More »
The last time I’ve worked with the ELK stack about 7 years ago, see the ELK: установка Elasticsearch+Logstash+Kibana на CentOS. Currently, we are using Logz.io, but its costs going higher and higher, so we started looking at the self-hosted ELK solution to be running on our AWS Elastic Kubernetes Service clusters. So, the task, for… Read More »
AWS ALB Ingress Controller for Kubernetes – is a Kubernetes controller which actually controls AWS Application Load Balancers (ALB) in an AWS account when an Ingress resource with the kubernetes.io/ingress.class: alb annotation is created in a Kubernetes cluster. This Ingress resource in its turn describes an ALB Listeners configuration with SSL termination or traffic routing… Read More »
Gorush is a Go-written application which we are planning to use to send push notifications to our mobile clients. The project’s home – https://github.com/appleboy/gorush The service will be running in our Kubernetes cluster in a dedicated namespace and must be accessible within the cluster’s VPC only, so we will use an Internal ALB from AWS.… Read More »