marclop.svbtle.comMarc Lopez

Svbtle Menu is writing on the Svbtle network. github.com/marclop @marclop__ rss feed about svbtle sign up Personal Blog @marclop__ github.com/marclop Read this first Road to Continuous Integration Introduction About a year ago, I had some doubts about Continuous Integration because of how I had seen it working and some of the challenges that this methodology presents, Thereby I wanted to take a better approach at it in my new company. This article will guide you through my journey to Continuous Integration. Let’s get started. Continuous Integration (CI) is a software development practice that recommends integrating to a repository main branch at least once a day and preferably more than once. Every time a commit is made and pushed to the remote Source Code Repository, it is built, verified and scanned in a different environment from the one used by the developer’s daily work to provide fast , reliable feedback to the development team. Very much like in the diagram below This relatively new approach allows the development team to detect and fix early bugs while developing, but... Continue reading → Jul 15, 2016 Terminal tricks to boost productivity Escape tedious commands There’s always those horrible, tedious, uncomfortable to type commands that you type in every single day at work at least once. Something like git pull or git fetch Can be shortened to a much shorter command like gp or gf . Here’s where alias comes to the rescue. But before that, we need yo identify what long commands we type in more often to make the most out of our aliases. Identifying long commands To see the commands that we use the most we can call the history command and with the help of superuser, make sense of our daily input. history | awk '{CMD[$2]++;count++;}END { for (a in CMD)print CMD[a] " " CMD[a]/count*100 "% " a;}' | grep -v "./" | column -c3 -s " " -t | sort -nr | nl | head -n10 The output of that command was the following when I typed it in my computer: 1 2009 20.092% git 2 1058 10.5811% docker 3 802 8.0208% ... Continue reading → Jul 13, 2016 Moving from svbtle to ghost Why Lately I was missing some more customization at [Svbtle](svbtle.com) https://marclop.svbtle.com, so I recently decided to move my blog to http://marclop.com, instead of being locked in the Svbtle CMS. While Svbtle design is very compelling due to its simplicity and cleanliness I haven’t seen (much) improvements in the last 2 past years, let alone the amount of customization that you can apply to it is about nil . While I still like Svbtle’s principles, speed, Markdown and GA tracking, I’m missing one feature that’s becoming more and more important for me: Theme customization But it isn’t all black or white, I still like somethings of svbtle, but those are already covered in Ghost, so here I go. Svbtle Pros: Clean UI Markdown Fast Google Analytics integration Kudos button Cons: No theme customization Not possible to add additional code (JS) to your post No support for SEO... Continue reading → Jul 5, 2016 How I tripled my salary in 3 years Around 3 years ago I started my professional career in Systems Administration / Engineering / SRE, I was barely a junior, but I had (and still have) quite a lot of ambition and high hopes for the future me. Prior to that, I was doing internships wherever I could to gain experience and learn as much as I could, acting as a networking (D-Link) teacher to the school I previously attended and other miscellaneous things to be of use. First job I started out my first real job at Amaris (At the time it was about 1.5K employees worldwide), where I would spend a good year and a half working for Thomson Reuters Financial , Splendia and helping out some of my co-workers with technical challenges in their current projects. The first 6 months where exhilarating, I finally had a job, which meant I could really show my real value and how eager I was to learn and be of real use to my boss, co-workers... Continue reading → Jun 30, 2016 Alpine Linux for your Docker containers Alpine linux was slowly becoming the de-facto for most of the Docker registry images, and today is one of the most used base images for official Docker images (called Docker Library), Some examples: nginx and redis. Distribution Alpine Linux is a super small linux distribution that claims to focuses on being lighteight , secure and resource efficient . The idea comes the Busybox implementation, and also uses musl and libc which results in an image no bigger than 8MB! $ time docker run --rm alpine echo true Unable to find image 'alpine:latest' locally latest: Pulling from library/alpine e110a4a17941: Already exists Digest: sha256:3dcdb92d7432d56604d4545cbd324b14e647b313626d99b889d0626de158f73a Status: Downloaded newer image for alpine:latest true docker run --rm alpine echo true 0.01s user 0.01s system 0% cpu 3.892 total It downloads the image, starts the container, runs the command... Continue reading → Mar 4, 2015 Vagrant series I: Installing and using Vagrant on Windows 8.1 (Hyper-V required) I’m sure you’ve heard about Vagrant at least to some degree somewhere. If you haven’t it may be time for you to become at least aware of its existence. I will not make any introduction post on it as it has been explained extensively and very well in lots of blogs and Internet pages: Vagrant docs: Why vagrant Introducing vagrant In this post I will describe how I set up my own vagrant environment on Windows 8.1 so it might not fit well in other versions of Windows (Specially if you don’t have the Windows 8 Pro version) which don’t have the Hyper-V feature. My “lab” requirements are: Windows 8.1 Pro Hyper-V Feature enabled Vagrant 1.7.2 Vagrant Putty plugin Atom editor: For editing diferent files and formats such as this post Administrator permissions on the host machine An existing Hyper-V vSwitch, either Internal or External. Putty Putty Solarized Theme Installing and running ... Continue reading → Dec 3, 2014 Paswordless SSH using an SSH keypair SSH overview SSH is a widely-used secure console connection to a remote linux server. It provides a text-only interface and spawns a remote shell in the server which is previously defined in the user creation process but it’s usually /bin/bash or /bin/sh. After we successfully log into the server, we can execute system commands or custom scripts depending on the permission level we have. In this post I’ll cover how to generate an SSH keypair so that we can connect to our server remotely without specifying a password every time. SSH Keypair generation We have two options: Create an SSH Keypair using Puttygen on windows Create an ssh using openssl (ssh-keygen) on our remote server and then copying it to our local computer and convert it to a Putty .ppk file if necessary. To generate the keypair using ssh-keygen we’ll use: [marc@centos7 ~]$ ssh-keygen -t rsa -b 4096 -C "My Private ... Continue reading → Dec 1, 2014 Creating an automated CentOS 7 Install via Kickstart file Since this article was written, I have moved to a new blog, to continue to follow my activity at http://www.marclop.com. This blogpost is available here in the updated format. require(["mojo/signup-forms/Loader"], function(L) { L.start({"baseUrl":"mc.us13.list-manage.com","uuid":"80efb65b846ae883e8359f31c","lid":"642ee9eec0"}) }) File Generation In this post I’ll try to describe as throughly as I can and make a walkthrough of how to automate the installation of CentOS7 via a Kickstarter file located in an accesible web server over the Internet. Here are the steps required to do it: [OPTIONAL] Install CentOS7 using your preferred method [OPTIONAL] Copy the resulting installation file located under /root/anaconda-ks.cfg Open your kickstart file and begibn writing your desired configuration Save it when it suits your needs and upload it to any http server you have in your reach (you... Continue reading → Sep 11, 2014 SmartOS AWS S3 Restore Amazon Simple Storage Service (S3) Amazon Simple Storage Service (Amazo...