* Install the NSClient++ on remote Windows server 1) Download the NSClient++ from its offical download page. Make sure you use the right version for the server processor 32bit/ 64bit. In this sample, I use NSClient++-0.3.8-Win32.zip. 2) Unzip NSClient++-0.3.8-Win32.zip to C:\nsclient++. 3) Open a command prompt and change the path to C:\nsclient++, then run ‘NSclient++.exe … Continue reading Nagios: Monitoring Windows
Nagios: Monitoring Linux
In this sample, Nagios monitors remote Linux host via the plugin named ‘check_nrpe’. And the NRPE package needs to be installed on the remote Linux host, as it works as the Nagios Linux agent. * The following configurations need to be done on the remote Linux/Unix host: 1) Install prerequisite packages. yum install -y gcc … Continue reading Nagios: Monitoring Linux
Nagios Installation
Today is the first day of my new job. I am currently working as a system/network administrator in a data center of a global organization. The first task I got is something on Nagios. I did not use Nagois before. Instead, I am pretty familiar with a similar product named WhatsUp Gold. I believe the … Continue reading Nagios Installation
How Google Search Works
How Google Search Works
FTP Active Mode vs. Passive Mode
Continue with my previous post. Now my friend should understand why the solution I gave to him fixed the FTP issue. I illustrated how FTP protocal works in both active and passive mode as below. The biggest difference is which side initiates the data transfer session: In active mode, FTP server initiates the data transfer … Continue reading FTP Active Mode vs. Passive Mode
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