Kubectl is a fantastic tool to deploy and manage applications in Kubernetes. Using kubectl you can inspect cluster resources, create/update/delete each kind of k8s object (pods, services, deployments, etc), scale up and down an existing replicaSet and so on. If you had read the previous article in the series “K8S in the wild” and you are interested in […]

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We are living in the age of containers. More and more companies are in the middle of redesigning and rewriting their monolith applications in the microservices way, deploying it in containers. Of course, all the deployed containers need to be orchestrated by something. And there we go… there are some pieces or software able to […]

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A few years ago, when I started to be a system administrator / DevOps engineer  I installed some package on a CentOS 7 system and I wanted to find out where all files were installed. I questioned myself if there is a way to ask the package manager where the package was installed. After some […]

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The ‘$’ character is used for parameter expansion, command substitution, or arithmetic expansion. It is very useful if you want to manipulate the values of variables without using some other external command like sed, awk, python etc. In this article you will learn more about how to use parameter expansion in Bash. First of all, is important […]

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Javascript keeps its position in the top of the preferences of a scripting language in 2018. According to StackOverflow’s 2018 survey, about 70% of the respondents chose Javascript as used scripting language. Being so popular automatically means a huge open-source community and this means a lot of new libraries designed to solve some of the shortcomings of language or […]

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Docker is awesome! Nowadays containers are everywhere. From startups to huge companies, everyone uses it more or less. On the other hand, WordPress is one of the most popular Content Management Systems (CMS) due to the fact is user-friendly, is flexible and has tons of nice features. There are lots of freelancers worldwide developing themes, […]

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Let’s Encrypt is a free and open certificate authority (CA) provided by Internet Security Research Group (ISRG). The main purpose of this organization is to offer free digital certificates in order to enable HTTPS on your website. They fight for a more secure and privacy-respecting Web, and this is one of the reasons they offer certificates […]

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Knowing simple JS tricks can save a lot of development time, so I will share with you some tricks I learned these days and I found useful: Object destructuring used to simulate name parameters A very nice and handy way to pass a config object as a parameter for a function and avoid checking the […]

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One of the problems I identified when I build a web scraper is execution time needed to process the DOM and the memory used for this task. If HTML source is considerably big and XPaths are complex, the time needed for processing will increase. In my opinion, a language such as Go is preferable in this situations. […]

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Nowadays we can enjoy lots of information on the Internet. This is fantastic because we can use this information sources to enrich our skills but, sometimes, as a developer, we want to use some pieces of information in our awesome software projects. Here is the moment when we face the problem of unstructured information from […]

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