vnStat is a console-based network traffic monitor for Linux and BSD that keeps a log of network traffic for the selected interface(s). It uses the network interface statistics provided by the kernel as information source. This means that vnStat won’t actually be sniffing any traffic and also ensures light use of system resources. In this … Read more
Nagios is the most popular open source monitoring system. Nagios will monitor servers, switches, applications and services. It alerts the System Administrator when something went wrong and also alerts back when the issues has been rectified. In this tutorial we will learn how to install and configure Nagios 4.0.8 on CentOS 7/RHEL 7. To install … Read more
Icinga is an enterprise grade open source monitoring system which keeps watch over networks and any conceivable network resource, notifies the user of errors and recoveries and generates performance data for reporting. Scalable and extensible, Icinga can monitor complex, large environments across dispersed locations. Icinga is a fork of Nagios and is backward compatible. So, … Read more
The sar utility, which is part of the systat package, can be used to review history performance data on your server. System resource utilization can be seen for given time frames to help troubleshoot performance issues, or to optimize performance. Installation Sar Sysstat can be easilly installed using the yum package manager: yum install sysstat … Read more
Now let us add some clients to monitor by Nagios server. Add the EPEL repository to install “nagios-plugins” and “nrpe” packages in client systems. View also: How to Enable EPEL Repository for RHEL/CentOS 6/5 and Installing Nagios-3.4 in CentOS 6.3 Nagios server: Operating system : CentOS 6.4 IP Address : 192.168.1.80 Nagios client: Operating System … Read more
Nagios is an opensource software used for network and infrastructure monitoring. Nagios will monitor servers, switches, applications and services. It alerts the System Administrator when something went wrong and also alerts back when the issues has been rectified. View also: How to Enable EPEL Repository for RHEL/CentOS 6/5 yum install nagios nagios-devel nagios-plugins* gd gd-devel httpd … Read more