Managing and deploying AWS IAM User Login Profiles in Terraform requires a base-64 encoded PGP public key or a Keybase, as stated in the official documentation. But, there is no info on how to get to this PGP key, hence the topic for today will describe the…

RPO (Recovery Point Objective) and RTO (Recovery Time Objective) are two of the most crucial and key parameters as part of a disaster recovery plan. Even though RTO and RPO sound alike, obviously there are major differences between them which I’m going to…

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…

In case you didn’t know by now, Azure Portal offers a decent ammount of customization, including option to auto logout after a period of time.

If you have already created a docker-compose stack and you are trying to restart the containers or start them you may face Docker error: Cannot start service ..: network $network-id not found error. Here I will quickly show you some working scenarios on how…

Speaking of Azure regions and locations, very often we think of the commercial Azure cloud, since there is Azure Government, which basically represents a completely isolated Azure cloud dedicated to the US government only. For the rest of us being plebs,…

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…