How to Monitor a Linux host With nagios We will demonstrate how a add a new host to Nagios, so it will be monitored.  If you want to r...

How To Install Nagios 4.4.2  on CentOS 7 or RHEL 7 In this How to Guide , we will cover the installation of Nagios 4 on CentOS 7 or RH...

SNMP showing wrong Disk Usage Values For larger Disks Nagios It's a Known Bug in SNMP. SNMP has limitation of 32byte size. ...

Nagios is a free opensource monitoring system. We get this error on a Nagios rhel7 client, while configuring it for monitoring. The nrpe ...

While configuring the clients for the nagios monitor, we get these errors. This error means the nrpe daemon is communication with nagios se...

Nagios : Return code of 255 is out of bounds You must be knowing or faced this issue if you are using nagios . I've come across this ...

How to Configure Read Only Mount Points Check in Nagios? Nagios 1. Download the check_ro_mounts plugin from here . 2. Define comm...

Error: [root@example ~]# /usr/lib64/nagios/plugins/check_ro_mounts Can't locate utils.pm in @INC (@INC contains: /usr/lib/nagios/plug...

Nagios Error - HTTP CRITICAL - Unable to open TCP socket Error: Connection refused HTTP CRITICAL - Unable to open TCP socket So...

Nagios Error:  -bash: /usr/lib/nagios/plugins/check_disk: /lib/ld-linux.so.2: bad ELF interpreter: No such file or directory Solution:...

Nagios Error -- Connection refused or timed out Solution: 1. Check nrpe.cfg is correct 2. Start nrpe service service nrpe start ...

CHECK_NRPE: Error - Could not complete SSL handshake. --- Windows Server     If you are using NSCP-0.4.3.x or Greater on your Windows Hos...

NRPE: Unable to read output Solution: 1. Check if you have plugins for the right arch, i.e. if your client is x86_64 your plugins sh...

[1467432609] Warning: Return code of 127 for check of service 'Swap' on host 'nagiosClient' was out of bounds. Make sure th...

1. Login to the Server.   2. Check the NRPE Process Status.  service nrpe status 3. If it gives you following...

How To Create Nagios Availability Report and Send them through Cron What is Nagios? Nagios, now known as Nagios Core, is a free and ...