Category Archives: CI/CD

Continuous integration in software engineering is the practice of merging all developer working copies to a shared mainline several times a day.

Continuous delivery is a software engineering approach in which teams produce software in short cycles, ensuring that the software can be reliably released at any time and, when releasing the software, doing so manually. It aims at building, testing, and releasing software with greater speed and frequency.

Jenkins: running workers in Kubernetes and Docker images build

27 February 2021

 We have a Jenkins instance that is running jobs in Docker containers on its host. Eventually, we’ve faced with an issue when the current AWS Ec2 instance t2.2xlarge (8 CPU, 32 RAM) during peak workload periods was too overloaded – not enough CPU time, not enough memory. So, the first solution could be to proceed… Read More »

ArgoCD: a Helm chart deployment, and working with Helm Secrets via AWS KMS

22 November 2020

 In the previous post ArgoCD: an overview, SSL configuration, and an application deploy we did a quick overview on how to work with the ArgoCD in general, and now let’s try to deploy a Helm chart. The most interesting part of this is how to enable the Helm Secrets. Had some pain with this, but… Read More »

ArgoCD: an overview, SSL configuration, and an application deploy

22 November 2020

 ArgoCD helps to deliver applications to Kubernetes by using the GitOps approach, i.e. when a Git-repository is used as a source of trust, thus all manifest, configs and other data are stored in a repository. It can b used with Kubernetes manifest, kustomize, ksonnet, jsonnet, and what we are using in our project – Helm-charts.… Read More »

Jenkins: Redis deployment, and Helm subchart values

1 November 2020

 The task is to create a Jenkins job to deploy Redis to Dev/Stage/Prod Kubernetes clusters. In the Redis: running Master-Slave replication in Kubernetes we did it manually to see how it’s working, now it’s time to automate it. The main question is how to pass parameters for different environments during the deployment? I’d like to… Read More »

Kubernetes: running SQL migrations with Kubernetes Job and Helm hook

27 October 2020

 We have a project running in Kubernetes that needs to run SQL migrations during deployment. To run migrations need to clone a Github repository and run actually migrations stored in it. Currently, this is done with Kubernetes initContainers , and there are two of them – the first one with git clones the repository with… Read More »

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 »

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 »

AWS Elastic Kubernetes Service: a cluster creation automation, part 1 – CloudFormation

24 April 2020

 The task is: create automation to roll out an AWS Elastic Kubernetes Service cluster from scratch. Will use: Ansible: to automate CloudFormation stack creation and to execute eksctl with necessary parameters CloudFormation with NestedStacks: to create an infrastructure – VPC, subnets, SecurityGroups, IAM-roles, etc eksctl: to create a cluster itself using resources created by CloudFormation… Read More »

What is: SAML – an overview, its structure and requests tracing between a Jenkins and Okta SSO

17 November 2019

 During the SAML SSO configuration for our Jenkins, I faced an issue, when some attributes weren’t passed from Okta to the Jenkins instance. So in this post will try to figure out what is SAML in general, will take a short overview of its architecture and main components, and will make some SAML-requests tracing/sniffing to… Read More »