DevOps: Setup a centralized log system EFK (Elasticsearch)

The monitoring consists in detecting and understanding the problems that an application may encounter. Monitoring allows developers and Ops to align their issues by basing discussions on facts. It also allows you to set up an…

Migrate a database in a CI/CD pipeline with Flyway

CI/CD pipelines allow to build and deploy applications. But update databases is a much more complex task. The Flyway open source software has a solution to solve this problem.

Migrate the database of a Spring Boot app in a CI/CD pipeline with Flyway

CI/CD pipelines allow to build and deploy applications. But update databases is a much more complex task. The Flyway open source software has a solution to solve this problem.

Setup Container Redis, run commands, and publish/subscribe messages

In this story, we will setup a Redis server and we will use a Redis CLI to execute some Redis commands. We will use Docker containers to setup the environment.

Learn Kubernetes: Deploy a MongoDB Pod on Kubernetes

In this story, we will install a Pod to run a MongoDB Docker container on Kubernetes.

The DevOps Assessment of SAFe: DevOps Health Radar

When coaching a DevOps team, it is important to identify the topics on which to focus more effort. The DevOps Maturity Assessment plays this role. At the end of the coaching process, the Maturity Assessment can be implemented again to measure…

Search and replace text in files with regex (regular expressions) with grep — Cheat sheet Linux

In this story, I explain how to search a text in files with regular expressions (RegEx) with the commands grep, egrep, and fgrep).

vi/vim — Cheat sheet Linux

In this story, you will find the Linux Cheat Sheet for vi and vim.

vi and vim are two common editors. They support three modes:

• command: allows to move the cursor and to perform operations,

Logs on Linux: journalctl — Cheat sheet Linux

In this story, we will see how works journalctl on Linux hosts.

For logs, Debian, Ubuntu and CentOS use :

• systemd as the initialization system,
• journald…