[Photo by Antony Trivet](https://www.pexels.com/photo/herd-of-blue-wildebeest-walking-in-savanna-6053000/)

How I stopped worrying and loved the GNU Make and Makefiles

First contact with make When I was invited for my first job interview in the IT, I’ve been asked such question: How would you typically build a program from sources, what commands will you use? I answered: It’s obvious: ./configure make make install Those times belong to the past now and not many programmers use GNU Make1 today. Try asking this question and you will see disgust or be called a moron 😃...

2024-02-16 · 8 min · timor

Keeping Docker afloat - Best practices for patching and deprecating images

Intro One of the biggest benefits of Docker images is their immutability. Once they’re built, they don’t change. Built once, would work forever… That’s how nightmares of security guys starts 🤣 We have then two contradictory concepts: flowchart LR id1(Keep it stable) <---> id2(Keep is up to date and secure) For day to day work, usually first concept wins. You want your builds stable and try to avoid tempting distractions of upgrading log4j to latest version… Who knows what might break....

2024-02-09 · 7 min · timor
[Photo by RealToughCandy.com from Pexels](https://www.pexels.com/photo/a-person-holing-a-sticker-in-close-up-photography-11035380/)

The best way to get NVM working in CI/CD systems

TL;DR While reasoning is important, readers may not be interested in all the frustrations I experienced while figuring out how to get things done. If you’re looking for a quick solution, skip to the “What eventually worked?” section. However, if you’re interested in the thought process behind the solution, keep reading. Why? Some might bother why the hell I’d like to make my life so hard? 🤣 I’m supporting organization with thousands of projects....

2023-04-25 · 9 min · timor
Devoxx 2022

Back on the big stage!

I’m back on the big stage! I haven’t attend any big conferences as presenter for some time, but this year will change it. I’m starting big, with a talk: Docker base images - Ideas how to manage them on scale on Devoxx conference in Kraków, that will take place on 22-24th June 2022. Want to meet? Meet there 😄 Update I uploaded slides from presentation to my Github account. There’s also a video available:

2022-06-13 · 1 min · timor

Projekt Jednorożec

Projekt JednorożecPowieść o szansie w epoce przewrotów cyfrowych Author: Gene Kim helion.pl

2021-12-09 · 1 min · timor

Projekt Feniks

Projekt FeniksPowieść o IT, modelu DevOps i o tym, jak pomóc firmie w odniesieniu sukcesu Authors: Gene Kim, Kevin Behr, George Spafford helion.pl

2018-08-18 · 1 min · timor

Ansible - ssh pipelining

In recent Ansible update to 1.5 version there is really nice feature ssh pipelining. This option is serious alternative to accelerated mode. Just add to you config file (ex. ~/.ansible.cfg): [ssh_connection] pipelining=True Now run any playbook - you will see the difference 😄 Source (and extended info about): http://blog.ansibleworks.com/2014/01/15/ssh-connection-upgrades-coming-in-ansible-1-5/

2014-03-04 · 1 min · timor

Ansible - Dynamicaly update /etc/hosts files on target servers

I was configuring GlusterFS on few servers using Ansible and have a need to update /etc/hosts with hostnames for easier configuration. I found this one working: - name: Update /etc/hosts lineinfile: dest=/etc/hosts regexp='.*{{item}}$' line='{{hostvars.{{item}}.ansible_default_ipv4.address}} {{item}}' state=present with_items: '{{groups.somegroup}}' Source: http://xmeblog.blogspot.com/2013/06/ansible-dynamicaly-update-etchosts.html

2013-12-11 · 1 min · timor