This guide outlines the installation and configuration of Network UPS Tools (NUT) for monitoring a Tripp Lite USB PDU, enabling Zabbix integration. It covers prerequisites, file configuration, USB permissions, firewall settings, service management, and setting up Zabbix agent parameters, concluding with adjustments for SELinux to facilitate data collection.
Monitoring
Monitor Tripplite UPS on RHEL 7 via NUT
One of the UPS's in my home lab is a Tripplite 1500VALCD. I wanted to be able to monitor/manage the UPS via RHEL/Centos however Tripplite no longer makes a Linux version of Power Alert Local for Linux. Instead I decided to use Nut. After connecting a USB cable between my RHEL server and my UPS, … Continue reading Monitor Tripplite UPS on RHEL 7 via NUT
Cockpit for Centos and RHEL 7: Install and Configure
Introduction I have recently purchased 3 Dell servers, and put myself to task to build out a new lab. My old lab was in desperate need of updating as I had long past the time when 48GB of memory per node was sufficient. The cost of memory, old or new was not even closely in … Continue reading Cockpit for Centos and RHEL 7: Install and Configure
Centos7/Rhel7 – Collectd Config for Libvirt, Carbon-Cache
The following is the collectd config that I am running on my RHEL 7 kvm hypervisor. This is not meant to be an all inclusive config for collectd, rather I am looking to gather basic performance metrics on my hypervisors and VMs. Note that I have disabled selinux, as I am running these hypervisors in … Continue reading Centos7/Rhel7 – Collectd Config for Libvirt, Carbon-Cache
HomeLab: Basic Syslog Configuration on Cisco Catalyst Devices
In my homelab setup I am dumping syslog on all my devices to my Linux desktop. Have not figure out what I am going to do with it yet, but I see myself either setting up Splunk or Greylog in the near future. Note, a while back I wrote a post on how to configure rsyslog on RHEL 6 - s0 if you are interested you can find that post here.
Very High snmpd CPU Usage and 1000s of IP Addresses
For a while now we have been experiencing SNMP timeouts from our central monitoring server to a set of new and recently deployed servers. We at first attributed the issue to the network driver being a bit different than what we have used in the past (latest greatest hardware) and then to the fact that … Continue reading Very High snmpd CPU Usage and 1000s of IP Addresses
MegaRaid Cards Via CLI
MegaCLI is the Linux console based management utility for LSI SAS controllers. Honestly its a pretty crummy command when compared to HP's command line tool, but that's often what you are stuck with when you buy Dell or Supermicro.