Contents

How To Practise? ..................................................................................................................................... 2

Webmin Installation Using 'YUM' ............................................................................................................ 2

Nagios Tool - Nagios Core ....................................................................................................................... 4

Nagios Plugins Installation....................................................................................................................... 7

Login To Nagios Web Interface ............................................................................................................... 7

Nagios Exchange Webpage Link .............................................................................................................. 8

EPEL - No real Good Advantages ............................................................................................................. 8

Wireshark Using 'YUM' ............................................................................................................................ 9

Links For Other Tools ............................................................................................................................. 10

Links ....................................................................................................................................................... 11

Note : All these steps are applied to RHEL Clones say, for example , CentOS, Oracle Linux, RHEL,

Debian etc. If you have Ubuntu or Fedora then the steps shown below differ

How To Practise?

Getting the software and installing is one thing but, how to practise is another important thing.

My views to do that, as follows :

First install the tools on one Server to get basic practise (But, remember to take snapshot of

your Virtual Machine before you proceed with each tool - the mantra!)

In the step two, install or create two Servers (learning how to clone VM is very much useful,

especially using commands), check networking, install tools, create SSH between Servers,

install DNSmasq and create test hosts. Install servers like FTP, NFS etc. thereafter you can

build your own ideas and also put questions in the Linux Forum

Webmin Installation Using 'YUM'

Webmin Tool is liked by many Linux People. The below steps show how you can install it

quickly and create a Webmin Repository too. Assuming you have a public Yum configured

already

Access to the internet is needed for this installation

In that Vi file "webmin.repo" just put the below information and save the file

Download the Key "j cameron"

Import the key using RPM

Type the below Command

Login to the Webmin Web interface

The password is set to your actual root password of your Server

Navigate to the above links and experience more

Tips for further practise : Install DNSmasq and create test hosts using that, install FTP Server and

create Cron Tab and Cron jobs. In the 'links' section of this article you have relevant information

Nagios Tool - Nagios Core

http://www.nagios.org/download/core/thanks/?t=1429362714

Access to the internet is needed for this installation

Here we can see how we can download a specific version of Nagios (latest or old ones)

Prerequisites must be installed. On the link you can read the "installation documentation"

but, it points to old release of Nagios Core. So, you have to just change the version number

to get the latest one

http://www.nagios.org/download/core/thanks/?t=1429362714

Change your directory to /tmp so that it gets downloaded there

In the above step you see you get the latest one by typing "4.1.1" at the end to get the

latest one downloaded. The same procedure applies for Nagios Plugins to download the

desired version of Plugins, which is of course shown below

Compile Programs

Not only "make all" is sufficient but run the below ones : make install, make install-init etc

For Example you just run at the prompt the program's name. For example :

root@ora-rac1 nagios-4.1.1]# make install-init

The below steps are needed to be performed

In fact these steps are shown in documentation too

Nagios Plugins Installation

Login To Nagios Web Interface

Nagios Exchange Webpage Link

EPEL - No real Good Advantages

On the internet some Linux people stated that EPEL Repository is very helpful. It is not that

useful, by doing a basic test, to get the latest software. The below practical example shows it

To create EPEL Repository on RHEL 64 Bit Clone Systems download the below RPM from this

link

Tip : After you open the below Webpage, press "Ctrl+f" to open "Find Window" and then type in the

Find "epel-release-" (That way you can find and search a thing very fast on Webpages)

Perform a check to get Zabbix using EPEL

Note the version that EPEL is showing and compare it on Zabbix offical Website where you

would see a big difference.

Is there some trick or command to get latest version using EPEL? I think the Linux Community

can answer this ! Well, EPEL is a Fedora Project.

Wireshark Using 'YUM'

Installing Wireshark using Yum

First check how many packages are available. The command below shows that

The "Wireshark Gnome" Package provides GUI. if that is not installed then GUI is not there

for you

Installing

[root@ora-rac1]# yum install wireshark-*

This will install all the relevant packages and also you are provided with GUI

Links For Other Tools

Monit

Learn about Monit here

https://mmonit.com/monit/

Monit Download

https://mmonit.com/download/

Puppet

The best thing to learn about Puppet is creating a VM dedicated for this Tool

https://puppetlabs.com/download-learning-vm?_ga=1.40825442.1912488540.1442070099

Zabbix

In the same way for Puppet, you can either create a separate VM for Zabbix

Zabbix is best with a backend Database such as MySQL or Oracle

Also see the Zabbix Appliance for learning purpose

http://www.zabbix.com/download.php

Hearbeat

It is best to start reading about this initially (theory knowledge first)

http://olex.openlogic.com/packages/heartbeat

Heartbeat usage

http://www.linux-ha.org/doc/users-guide/users-guide.html

https://mmonit.com/monit/https://mmonit.com/download/https://puppetlabs.com/download-learning-vm?_ga=1.40825442.1912488540.1442070099http://www.zabbix.com/download.phphttp://olex.openlogic.com/packages/heartbeathttp://www.linux-ha.org/doc/users-guide/users-guide.html

Links

Dnsmasq

https://oracle-base.com/articles/linux/dnsmasq-for-simple-dns-configurations

For Linux Servers Installation Practise (basics)

https://de.scribd.com/doc/273176493/Linux-Server-Practise-1

Linux forum

http://forum.linuxcareer.com/forum.php

Linux articles on oracle-base

https://oracle-base.com/articles/linux/articles-linux#rhcsa_and_rhce

Linux articles for installing Servers

https://oracle-base.com/articles/linux/articles-linux#rhce

https://oracle-base.com/articles/linux/dnsmasq-for-simple-dns-configurationshttps://de.scribd.com/doc/273176493/Linux-Server-Practise-1http://forum.linuxcareer.com/forum.phphttps://oracle-base.com/articles/linux/articles-linux%23rhcsa_and_rhcehttps://oracle-base.com/articles/linux/articles-linux%23rhce