When it comes to monitoring, one of the famous web application for monitoring is Zabbix. In this article, we will see the basic installation and configuration of a Zabbix machine on a CentOS7. Zabbix is an open-source monitoring software tool for diverse IT components, including networks, servers, virtual machines (VMs) and cloud services. Zabbix provides […]
Building from scratch an agentless inventory system for Linux servers is a very time-consuming task. To have precise information about your server’s inventory, Ansible comes to be very handy, especially if you are restricted to install an agent on the servers. However, there are some pieces of information that the Ansible’s inventory mechanism cannot retrieve […]
blktrace is a block layer IO tracing mechanism which provides detailed information about request queue operations up to user space. There are three major components: a kernel component, a utility to record the i/o trace information for the kernel to user space, and utilities to analyse and view the trace information. This man page describes […]
Auditing a Linux System is one of the most important aspect when it comes to security. After deploying a simple Centos 7 Linux machine on virtual box, I made an audit using Lynis. It is amazing how many tiny flaws can be seen right from the beginning of a fresh installation. Lynis Enterprise performs security […]
Since some months I have not been posting anything on my blog. I should admit that I was really busy. Recently, a friend asked me about the Out of Memory messages in Linux. How is it generated? What are the consequences? How can it be avoided in Linux machines? There is no specific answer to […]