Monitoring Tools Part1: OpManager

INTRODUCTION

 ManageEngine’s OpManager can help you take control of the network. Opmanger is based on Java virtual machine. It is cross platform network monitoring tool which you can install on Linux as well as Windows enviroment. Opmanager  has number of features such as Network monitoring, physical and virtual server monitoring, flow-based bandwidth analysis, firewall log analysis and archiving, configuration and change management, and IP address and switch port management, thereby providing all the visibility and control that you need over your network.

Features of OpManager

1) Network Management

2) Monitor servers across various vendor os

3) Network Traffic Analysis

4) Managed configurations and track changes real time

5) Manage switch and IP address space 

6) Tracks and resolves outages before they occurs

7) Manage data center infrastructure

8) Application Performance Management

Installation

1) Download the desire package for installing Opmanager on server as follow:

  Opmanager requires java latest package installed on the server. If you dont have Java install on the server install java package using yum repository.

Make sure downloaded package have execute permission.

Run bellow command in the directory where you have downloaded opmanager binary installation file. Installation will start in console mode and follow the instruction to install Opmanager on server.

By default Opmanger install's in /opt/ManageEngine/OpManager directory. You can change the default location of the directory by specifying same during installation process.

2) Graphical installation.


For GUI based installation on Centos 7 you open terminal and move into the directory where you have save binary installation  package of Opmanager and run bellow command as in screen:

Once the installation get started you will get popup window as bellow. Select Next and select appropriate options in the checkbox on next screens:

During installation process it will ask to select port no for installing OpManager. Here I have selected 8080 port no.

Once installation finish. Next step is to start OpManager. By default OpManager will installed in /opt/ManageEngine/OpManager  directory. To start OpManager service move into /opt/ManageEngine/OpManager/bin directory which contains various scripts. Run commands as per bellow screens on terminal:

Once Opmanager started go to browser and enter http://server_ip/8080 where 8080 is the port we have specify during installation you can use any port you want. We will get login screen as bellow:

Default username and password is admin.

Once you login into OpManager you will get Discovery page in which you can add specify your network range which will automatically discover devices in that specified network range using SNMP protocol. 

For adding New devices select Add device option from the left hand side pane of the OpManager or you can simply add IP of the device ( server, switch, router etc) in the search bar once OpManger recognize this IP is not present in the OpManager it will give prompt for add device where you can add device.

Once, you add device into OpManager you will able to add various monitoring parameters such as service monitor, Disk utilization, Memory Utilization, CPU Utilization. There are various plugins available for Opmanager such as for reports Report plugin available with the help of which you can take custom report or schedule report and mail reports to desired mail id's. We can set threshold values on server for monitoring and if that threshold rich notification mail as well as SMS is sent to the notification Id's.

This is short description of OpManager you can get detailed info on OpManger on ManageEngines official website https://www.manageengine.com/network-monitoring