In the previous post – AWS: VPC Flow Logs – logs to S3 and Grafana dashboard with Loki, we created a Grafana dashboard that displays NAT Gateway traffic usage statistics. What we were interested in there was which Kubernetes Pods use the most bytes, because it directly affects our AWS Costs. And everything appears… Read More »
Continuing the topic about AWS: VPC Flow Logs, NAT Gateways, and Kubernetes Pods – a detailed overview. There we analyzed how to work with VPC Flow Logs in general, and learned how we can get information about traffic to/from Kubernetes Pods. But there is one problem when using Flow Logs with CloudWatch Logs – the… Read More »
Disruption budgets were introduced in version 0.36, and it looks like a very interesting tool to limit Karpenter from recreating WorkerNodes. For example, in my case, we don’t want EC2 instances to be killed during business hours in the US because we have customers there, so we currently have consolidationPolicy=whenEmpty to prevent “unnecessary” deletion… Read More »
I will write about VictoriaMetrics Cloud itself separately, but now I want to check how you can write CloudWatch Metrics via AWS Firehose to VictoriaMetrics Cloud. In fact, the AWS Data Firehose service itself allows you to transfer streaming data from various sources to Amazon services such as AWS S3, Redshift, Open Search, or… Read More »
We have a new EKS cluster 1.30 on our project, where we want to completely remove the old IRSA with OIDC and start using EKS Pod Identities – see AWS: EKS Pod Identities – a replacement for IRSA? Simplifying IAM access management. And everything seems to work fine, but when I started deploying our… Read More »
Quite often for a new project that is just building its infrastructure and CI/CD to do so as an MVP/PoC, and at the beginning, no time is spent on tuning AWS IAM Roles and IAM Policies, but simply connecting AdministratorAccess. Actually, this is exactly what happened in my project, but we are growing, and… Read More »
So, we have an AWS Elastic Kubernetes Service cluster with Authentication mode EKS API and ConfigMap, which we enabled during upgrade of the EKS Terraform module from version 19.21 to 20.0. Before switching EKS Authentication mode completely to the API, we need to transfer all users and roles to Access Entries of the EKS cluster… Read More »
It seems like a common task to update a version of a Terraform module, but terraform-aws-modules/eks version 20.0 had some pretty big changes with breaking changes. The changes relate to authentication and authorization in AWS IAM and AWS EKS, which I analyzed in the post AWS: Kubernetes and Access Management API, the new authentication in… 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… Read More »
We’re preparing to migrate our Backend API database from DynamoDB to AWS RDS with PostgreSQL, and finally decided to try out AWS RDS IAM database authentication, which appeared in 2021. IAM database authentication, as the name implies, allows us to authenticate to RDS using AWS IAM instead of the login-password from the database server… Read More »