Helm: helm-secrets – sensitive data encryption with AWS KMS and use it with Jenkins

16 May 2020

So, as a follow-up to the Helm: Kubernetes package manager – an overview, getting started post – let’s discuss about sensitive data in our Helm charts. What I want is to store a chart files in a repository, but even if such a repo will be a private Github repo – I still don’t want… Read More »

AWS: CloudFormation – using lists in Parameters

8 May 2020

In addition to the AWS Elastic Kubernetes Service: a cluster creation automation, part 1 – CloudFormation and AWS Elastic Kubernetes Service: a cluster creation automation, part 2 – Ansible, eksctl posts – now I’d like to pass a Parameter as a List with multiply values to a CloudForamtion stack. The idea is to get all… Read More »

Helm: Kubernetes package manager – an overview, getting started

3 May 2020

The official documentation calls Helm as a “The package manager for Kubernetes“, but in fact, Helm is something bigger than just a package manager – it’s more an application controlling tool for their installation, managing, upgrading, configuration, etc. In this post, we will take an overview of Helm in general, its Charts, templates, variables, and… Read More »

AWS Elastic Kubernetes Service: a cluster creation automation, part 2 – Ansible, eksctl

1 May 2020

The first part – AWS Elastic Kubernetes Service: a cluster creation automation, part 1 – CloudFormation. To remind the whole idea is to create an automation process to create an EKS cluster: Ansible uses the cloudformation module to create an infrastructure by using an Outputs of the CloudFormation stack created – Ansible from a template will… Read More »

Linux: no sound after suspend/sleep – solution

30 April 2020

I have a laptop with Arch Linux. It’s suspended with the systemctl suspend. The issue: after it’s wake up there is no sound. From the information found during the investigation (see links below) the issue happens because of the NVIDIA drivers and isn’t specific to the Arch Linux – can happen with any other Linux… Read More »

Steam: Civilization V, Arch Linux and ERROR:Invalid resolutions constraints: 0x0 must not be greater than 0x0

27 April 2020

I’m using Steam on Arch Linux (see the Arch Linux: Steam installation). And I have Civilization V game here – my favorite game for last N-years. I have NVIDIA drivers installed and most of the games work fine, even World Of Tanks, but I wasn’t able to play Civilization from the moment I’ve installed Steam… Read More »

Kubernetes: monitoring with Prometheus – exporters, a Service Discovery, and its roles

26 April 2020

The next task with our Kubernetes cluster is to set up its monitoring with Prometheus. This task is complicated by the fact, that there is the whole bunch of resources needs to be monitored: from the infrastructure side – ЕС2 WokerNodes instances, their CPU, memory, network, disks, etc key services of Kubernetes itself – its… Read More »

AWS: eksctl – “Put http://169.254.169.254/latest/api/token: net/http: request canceled”

26 April 2020

We have a Docker image with the eksctl tool included. We also have an ЕС2 with Linux with the eksctl. There is an AWS IAM Instance Profile attached to this EC2 with the AdminAccess policy assigned. On this ЕС2 we have Jenkins running in a Docker container, and it spawns its jobs inside in additional… Read More »