So, Terraform is great, but so far in our project, we have decided to create the first AWS EKS clusters using the AWS CDK, because firstly, it is already on the project, and secondly, it is very interesting to try a new tool. Today we will see what came out of it, and how a… Read More »
Currently, I’m setting up a new EKS cluster. Among other things, I’m running ExternalDNS on it, which uses a Kubernetes ServiceAccount to authenticate to AWS in order to be able to make changes to the domain zone in Route53. However, I forgot to configure the Identity Provider in AWS IAM and ExternalDNS threw an error:… Read More »
Collecting logs in Grafana Loki with Kubernetes is very simple – we just launch Promtail in DaemonSet, configure it to read all data from /var/logs – and that’s it (in fact, we don’t specify anything at all – everything works out of the box from the Helm chart). But what about CloudWatch Logs? On my new project,… Read More »
I need to plan the use of Terraform in a new project, and this includes planning the file structure for the project, how to create a backend (i.e. bootstrap) and other resources needed to get started, and think about working with multiple environments and AWS accounts. In general, this post was originally written purely about… Read More »
The AWS Cloud Development Kit (AWS CDK) allows you to describe an infrastructure using the programming languages TypeScript, JavaScript, Python, Java, C#, or Go. Under the hood, CDK creates a CloudFormation stack with the resources described in your code. The answer to the question “Our CDK, when is Terraform?” can be found here – 4 ultimate reasons… Read More »
AWS Fargate is another serverless solution from Amazon that takes over infrastructure management, saving the user the need to spend time configuring EC2 instances, operating systems, container management systems, etc. In general, when I was getting acquainted with Fargate, I found a great video from AWS re:Invent 2022, which very well explained (and showed) the… Read More »
Instance metadata (IMDS – Instance Metadata Service) – data about an EC2 instance, such as information about AMI, IP, hostname, etc. You can also add User Data to Instance Metadata to store some parameters, which can then be retrieved inside the instance. See Instance metadata and user data and Instance metadata categories. From the beginning of the IMDS,… Read More »
We continue our engagement with GitLab and its deployment in Kubernetes. The first part – GitLab: Components, Architecture, Infrastructure, and Launching from the Helm Chart in Minikube, and now let’s get ready to deploy to AWS Elastic Kubernetes Service. What will we do and where: deploy to AWS from the Helm-chart, with some test env Kubernetes –… Read More »
As GitLab recently changed the policy of providing free access, and now only 5 users will be available for the Free subscription, we decided to move to the self-hosted version. In general, they have interesting terms with the license: the price depends on the number of users, you can buy it for at least one… Read More »
The very useful thing is to monitor how efficiently the cluster is being used, especially if applications are deployed by developers who do not delve into requests much and set inflated values ”in reserve”. A reserve, of course, is needed – but simply requesting resources is a bad idea. For example, you have a WorkerNode… Read More »