Author: Chathura Ariyadasa

♚Father ♚Innovative Technical Architect ♚ Cyber Security Strategist ♞ vCISO | vCIO ♞ Blogger & an Adrenaline junkie...

Creating Host groups and adding Hosts to Nagios

Today we are going to discuss on Nagios Host group creation and Host addition for the Nagios platform. The host groups provide clean grouping of the hosts. 

Creating Host Groups in Nagios

  • Create a hostgroups.cfg using the below command

vi /usr/local/nagios/etc/objects/hostgroups.cfg

  • Then add the following to the hostgroups.cfg.

define hostgroup {
         hostgroup_name NAMEOFGROUP
         alias NAMEOFGROUP alias
}

  • Add the entry in the Nagios.cfg file

nano /usr/local/nagios/etc/nagios.cfg

  • Then, add the below line at the end of the file

cfg_file=/usr/local/nagios/etc/objects/hostgroups.cfg

  • Finally, we need to add the servers to the host group (as below)

define host {
host_name NAMEOFHOST
alias NAMEOFHOST
address xxx.xxx.xxx.xxx
hostgroups NAMEOFGROUP
}

  • Also, make sure to restart the nagios service – service nagios restart

Then, we will look at Host addition process

Continue reading “Creating Host groups and adding Hosts to Nagios”

How to enable MFA in Dokuwiki

Recently, I had to create a Wiki site. So consideriing all the features, my selection was Dokuwiki. Before the go live, I had to secure the Wiki site. My primary concern was MFA (Multi Factor Authentication). I faced some issues while configuring the MFA. So, I thought of sharing this with you. Let’s see how we can enable MFA.

Make sure to slect “Mandatory” as no one can bypass the MFA

  • Then, you need to enable Google Auth. plugin as below

  • Finally, you may verify the MFA by running Enrollment wizard and re login

As you can see, I can not login to the system without providing the configured MFA.