As the podman is becoming a suitable way for replacing docker he also offers a compose file for managing multiple services as docker-compose. There are three ways to install it and I’m going to cover all of them. It’s easy and simple but to avoid some podman…

Slack is one of the most popular and used messaging apps by companies of any kind of business size, from small companies and startups to large enterprises. From DevOps point of view, the need for automation, observability and monitoring is still there, so…

Public Azure cloud IP ranges and service tags could be important thing when working with services and NSGs (Network Security Groups). The list could be downloaded as a JSON file in a couple of different ways which will be described as below.

This tutorial is aimed to show you how to download files from a remote sftp server and of course how to upload files to a remote sftp server. It’s useful if you are writing a bash or shell script which requires non-interactive usage of the sftp command and…

2022 might be the year of DevOps alternatives, including cloud providers, CI/CD tools and even containers. Speaking of containers, Podman looks like a promising alternative to Docker. Let’s see how they differ from each other.

Setting up RabbitMQ cluster with master and slave instances can invoke some node destabilizations like the error Node statistics not available. Here I’m going to show you few steps how can you resolve it.

The default open files (nofile) limit is 1024. Let’s see how we could confirm and increase it on user and system-wide level.

When it comes working with a master - replica services Docker offers a scaling compose command which is very useful. Here I’m going to show you how to use it with an example.

If you hold some heavy-load AWS Aurora database tables and you are trying to export some of the tables or import data, there is a big chance to face the following error ERROR 3024 (HY000): Query execution was interrupted, maximum statement execution time…

Kubernetes, the most popular container orchestration platform out there, needs no introduction. Let’s explore a couple of ways and tools on deploying K8s clusters on your local machine.

While running a docker container in detached mode d maybe you have experienced exiting the container immediately. Here I’m going to show you some ways how to keep it running in the background using the: Dockerfile pseudo-tty tail command

Restarting docker-compose stack (docker-compose restart) it’s pretty easy and convinient, and if you somehow screw up something, docker-compose down/up will take care of it. But, now the question is, how can we restart a single docker-compose service running…

The upgrading process from Ubuntu 20.04 to Ubuntu 21.10 takes some time but it’s a straightforward process if you stick close to the steps below. Before taking any actions please make sure that you have completed the Prerequisites section. Let’s make dirty…

Last week, I wrote about How to restart a single container with Docker Compose. The approach is manual, hence will be repetitive and error-prone. And since we want to automate almost everything as a DevOps engineer, today I’ll show you a better way of handling…

HTTP/2 was published almost 7 years ago, HTTP/3 being an internet draft standard since October 2020, and yet here we are, most of us still using HTTP/1.1. Considering how things quickly change in the IT world, I’ll give it av few (5-7) more years for the…

To simplify and structure the terraform modules you can use terragrunt as a wrapper. In this tutorial we are going to see how to install terragrunt on Centos 7.

Installation of podman-compose on Ubuntu 20.04 is pretty simple, quick, and can be achieved in three ways. Before jumping on the installation part make sure that you have python3 and pip3 installed from the prerequisites section.

Most of the shared hosting platforms are providing sftp access to the end-users as a secure file transfer protocol. There are a lot of free and open source GUI platforms for ftp, sftp and ssh connections, but if you are a fan of the Linux command-line tool…

The official Alpine Docker image doesn’t contain jq and curl by default. If you need to parse some JSON content or perform some curl checks, you can add them in the Dockerfile that’s using the official Alpine image.

Exporting and importing MySQL databases and tables sometimes can cause corruption. But there are a lot of different reasons why the MySQL table can get corrupted. Here in this tutorial, I will show you how can you check that.

Deploying docker containers based on alpine images or using alpine on your server is always a good idea as it’s a small, simple Linux OS. But if you want to perform some DNS checks you need to install DNS tools because they are not installed by default. Here…