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…

Using Docker with a non-root user can cause issues connected with the docker daemon. The docker daemon binds to a Unix socket, so the docker client will try to communicate to the daemon through that Unix socket. Even though the docker daemon is running on…

Django is a python free and open-source framework that is widely used nowadays. It offers a lot of libraries and functions that can be easily invoked. Running Django app with a local Django server will help you to speed up the development process. Let’s see…

Most of the Docker images are not compatible with the newest Apple Silicon M1 chip throwing no matching manifest for linux/arm64/v8. Let’s see how to resolve the issue.

TimescaleDB is a PostgreSQL extension that enables easier approach when working with time-series data. Today we are going to see how can we install, enable/disable, get the TimescaleDB version of the databases, and optionally remove it.

If you have been working with Docker Compose stacks for a while, you might have come across the following warning message: WARNING: Connection pool is full, discarding connection <IP Address>. Usually, the root cause it’s due to an application connection…

A reverse proxy that provides authentication with Google, Azure, OpenID Connect and many more identity providers. - oauth2-proxy/oauth2-proxy

Working with high load SQL queries or big transactions, you may face: Waiting for table metadata lock. Here I’m going to list some useful solutions that might help you.

Although Ansible has a low learning curve, obvisouly there’s always a big difference between learning on your own versus working on a medium to large scale size (enterprise) projects. Today’s post will be related to a common error in Ansible known as Ans…

In the last Ansible post I’ve noted that there’s a difference when choosing between vars_files and include_vars. So, let’s explore the differences on a surface level.

While creating a swap on your Linux machine, executing sudo fallocate -l 1G /swap-file-name may throw fallocate failed: Operation not supported. Here I’m going to show you a quick fix for it.

Clearing the DNS cache usually fixes issues related to not resolving new or updated existing domain records. Let’s see how it’s done from the command line though.

Having multiple docker-compose files in the same directory cleary is not a good idea, although I could see the use case if you are working on multiple different projects with custom docker-compose filenames and being lazy enough to put everything under the…