Nested Loops in Ansible
Recently I needed to create a Nested Loop in Ansible. One of the possible issues I had to consider, was the backward compatibility with both Ansible v1 and Ansible v2. A few days after, Ansible 2.5...
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Anything You Want
40 Lessons for a New Kind of Entrepreneur Derek Sivers tells his story of “10 years of experience in one hour”. Book link This is now one of my all time favorite books You are thinking: 1 hour and 31...
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Beyond
Beyond the Goal: Theory of Constraints Beyond the Phoenix Project: The Origins and Evolution of DevOps You can click here to read about TOC Book page: Beyond The Goal Book page: Beyond the Phoenix...
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Toyota Kata
Managing People for Improvement, Adaptiveness and Superior Results Must read for continuous improvement book page some of the key elements of the toyota way !! Continuous improvement Blameless...
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DNS RPZ with PowerDNS
Domain Name Service Response Policy Zones from PowerDNS Recursor documentation : Response Policy Zone is an open standard developed by Paul Vixie (ISC and Farsight) and Vernon Schryver (Rhyolite), to...
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Taking Up Serpents
Brody Taylor Thriller #2 By Ian Sutherland a couple years ago, I was looking for a fiction book related to the hacker scene. I came across Ian Sutherland. It is really enjoyable. book page...
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CentOS Dist Upgrade
Upgrading CentOS 6.x to CentOS 7.x Disclaimer : Create a recent backup of the system. This is an unofficial , unsupported procedure ! CentOS 6 CentOS release 6.9 (Final) Kernel...
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USBGuard
Prologue Security One of the most common security concerns (especially when traveling) is the attach of unknown USB device on our system. There are a few ways on how to protect your system. Hardware...
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Restrict email addresses for sending emails
Prologue Maintaining a (public) service can be sometimes troublesome. In case of email service, often you need to suspend or restrict users for reasons like SPAM, SCAM or Phishing. You have to deal...
View ArticleCentOS Bootstrap
CentOS 6 This way is been suggested for building a container image from your current centos system. In my case, I need to remote upgrade a running centos6 system to a new clean centos7 on a test vps,...
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Packer by HashiCorp
Packer is an open source tool for creating identical machine images for multiple platforms from a single source configuration Installation in archlinux the package name is: packer-io sudo pacman -S...
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Terraform Gandi
This blog post, contains my notes on working with Gandi through Terraform. I’ve replaced my domain name with: example.com put pretty much everything should work as advertised. The main idea is that...
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books
I’ve spent some time to gather most of the books I have read in my adult life, so this is my current Read (147) list Tag(s): books
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DevOps Failures, Virtualization Can Help!
this post is a copy of an old (Published on March 27, 2017) LinkedIn article, that you can also find it here The Cloud Illustration - Some rights reserved - flickr 2013 In IT operations we are...
View Articledovecot mountpoints
In my logwatch report I saw the below dovecot error msg: Warning: /mnt is no longer mounted Let’s filter mail log file for mnt: # egrep mnt maillog Sep 21 18:02:00 myserver dovecot: master: Warning:...
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WslRegisterDistribution failed with error: 0x800703fa
Getting this error on Windows 10 [Ubuntu running on Windows Subsystem for Linux] Go to this PC –> Manage –> Services & Applications –> Services –> LXSSMANAGER Tag(s): windows, win10,...
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sharing keyboard and mouse with synergy
Synergy Mouse and Keyboard Sharing aka Virtual-KVM Open source core of Synergy, the keyboard and mouse sharing tool You can find the code here: https://github.com/symless/synergy-core or you can use...
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Linux Software RAID mismatch Warning
I use Linux Software RAID for years now. It is reliable and stable (as long as your hard disks are reliable) with very few problems. One recent issue -that the daily cron raid-check was reporting- was...
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Cloud-init with CentOS 7
Cloud-init is the defacto multi-distribution package that handles early initialization of a cloud instance This article is a mini-HowTo use cloud-init with centos7 in your own libvirt qemu/kvm lab,...
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Apple iOS Vs your Linux Mail, Contact and Calendar Server
The purpose of this blog post is to act as a visual guide/tutorial on how to setup an iOS device (iPad or iPhone) using the native apps against a custom Linux Mail, Calendar & Contact server....
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