Please be aware that the link to the Wesley Coelho article on the page https://open-services.net/resources/article-20170715/ has been hacked. Problem likely to be at http://devops.sys-con.com.
Nigel Shaw
Thanks Nigel! Just replaced that link to the https://web.archive.org/web/20190521082934/http://devops.sys-con.com/node/4117562. I don’t think any hacking took place, just that the sys-con.com domain expired and it was hijacked by some squatters.