March 2016 – tuxfixer.com

Install Nagios Core from RPM on CentOS 7 / RHEL 7

March 15, 2016June 16, 2016 4 Comments

Nagios is a free software, which offers monitoring and alerting services for servers, switches, applications and services. This tutorial describes simple Nagios Core and Nagios Plugins installation from rpm packages on CentOS 7 / RedHat 7. There is no need […]

OpenStack Kilo 3 Node Installation (Controller, Network, Compute) on CentOS 7

March 13, 2016August 22, 2016 54 Comments

In this tutorial we will install OpenStack Kilo release from RDO repository on three nodes (Controller, Network, Compute) based on CentOS 7 operating system using packstack automated script. The following installation utilizes VLAN based internal software network infrastructure for communication […]

nethogs – Display Network Utilization per Process

March 5, 2016June 1, 2016 No Comments

Have you ever wondered how to check network utilization by PID in Linux? Now it’s easy with nethogs application, which unlike other network utilization monitoring applications (nload, iftop) works like Linux top command, but displays network utilization per PID along […]