Category Archives: Virtualization

In computing, virtualization refers to the act of creating a virtual version of something, including virtual computer hardware platforms, storage devices, and computer network resources.

AWS: Trusted Advisor, part 2 – CloudWatch Alarms and Slack notifications

29 November 2021

 Continuing with the theme of the AWS Trusted Advisor service, let’s see how can we configure notifications about new findings. The first part: AWS: Trusted Advisor, part 1 – its features overview. To have notifications, we can use Trusted Advisor metrics from the CloudWatch, see their list on the Trusted Advisor metrics and dimensions page.… Read More »

AWS: Trusted Advisor, part 1 – its features overview

29 November 2021

 AWS Trusted Advisor is another service that allows monitoring your accountant its resources in use for their cost-effectiveness, performance, security, and more. Keep in mind, that Trusted Advisor’s checks that are available for you depend on the AWS Support Plan of your account. вашего аккаунта. Fortunately, we have Premium so I’m able to how all… Read More »

AWS: Console – The Dark theme

23 November 2021

 The feature is not in production yet (maybe, will be announced on the re:Invent-2021?), but it already can be used via the browser’s Developer Tools. So, open the Developer Tools (F12), and open AWS Console, in the Dev Tools switch to the Application tab, on the left side in the Storage open Cookies: In the… Read More »

AWS: Cost optimization – services expenses overview and traffic costs in AWS

3 November 2021

 Let’s proceed with our journey on AWS Cost Optimization topics. Previous parts – AWS: Cost Explorer – costs checking on the CloudWatch Logs example and AWS: cost optimization – purchasing RDS Reserved Instances. One of the shortcomings of the cloud-based architecture is the fact, that it can cost much more than when using own bare-metal… Read More »

AWS: Lambda – copy EC2 tags to its EBS, part 2 – create a Lambda function

13 October 2021

 let’s proceed in our journey of the AWS Lambda function, which will copy an EC2’s AWS Tags to all EBS volumes, attached to it. In the first part, AWS: Lambda — copy EC2 tags to its EBS, part 1 – Python and boto3, we wrote a Python script that can get all EC2 instances in… Read More »

AWS: Lambda – copy EC2 tags to its EBS, part 1 – Python and boto3

13 October 2021

 We have an AWS Elastic Kubernetes Service cluster, which has a few WorkerNode Groups that were created as AWS AutoScaling Groups by using the eksctl, see the AWS Elastic Kubernetes Service: a cluster creation automation, part 2 – Ansible, eksctl for more details. The WorkerNode Group configuration for the eksctl keeps a set of Tags,… Read More »

Kubernetes: Helm – “x509: certificate signed by unknown authority”, and ServiceAccount for Pod

29 September 2021

 We have Github runners in our AWS Elastic Kubernetes service cluster, that are used to build Docker images and deploy them with Helm or ArgoCD. On the first helm install run in a Github runner’s Pod, we are getting the “x509: certificate signed by unknown authority” error: Or, if not set an API URL, then we… Read More »

AWS: disable TLS 1.0 and TLS 1.1 for Application LoadBalancer

27 September 2021

 If check any of a freshly created AWS Application LoadBalancer with a certificate from the AWS Certificate Manager, and with an HTTPS Listener’s default settings you’ll see the B grade: The main point of the SSL Labs is the support of the deprecated encryption versions – TLS 1.0 and 1.1. AWS LoadBalancer SecurityPolicy and TLS… Read More »

AWS: Cost Explorer – costs checking on the CloudWatch Logs example

7 September 2021

 This post isn’t an overview of the AWS Cost Explorer service, but just a quick example of how to detect costs for your AWS account and its services. So, when I came back from the vacation, I noticed that we’ve paid more than usually for the AWS CloudWatch for August – almost 50 dollars per… Read More »