Setup Remote Access

Remote access is done with nsclient. myLVS supports both, the nsclient version which comes from debian
and the windows version which comes with http://nsclient.org

Setup myLVS with the NSClient (the client part)

• On Debian8 run the installation command

root@mylvs01:/# apt-get install nagios-nrpe-plugin -s

• Check to see if the plugin runs without any error, run:

root@mylvs01:/# /usr/lib/nagios/plugins/check_nrpe

Setup the Linux server with the NSClient (the server part)

• Install NSClient Server part to the myLVS client

root@myLVS-LinuxClient:~# apt-get install nagios-nrpe-server

• Add to sudo

nagios ALL=NOPASSWD: /sbin/ipvsadm
nagios ALL=NOPASSWD: /sbin/init

Edit /etc/nagios/nrpe.cfg

• Set Allowed hosts

allowed_hosts=127.0.0.1 192.168.2.100

• Set dont blame

dont_blame_nrpe=1

• Set two new commands, restart web and reboot

command[reset_apache]=/etc/init.d/apache2 restart
command[reboot]=init 6

• Restart nrpe server

root@myLVS-LinuxClient:~# /etc/init.d/nagios-nrpe-server restart

Setup the Windows server with the NSClient (the server part)

Get the Windows client here: http://www.nsclient.org/download

• Install the client, the settings are not that important, just remove the password.

Edit C:\Program Files\NSClient++\nsclient++.ini

• Add to allowed hosts

allowed hosts = 127.0.0.1,::1,192.168.2.100

• SSL options needed for the classic npe client, worst case is to allow only:

ssl options = sslv2,sslv3

• Verify off

verify mode = none

• Insecure true

insecure = true

• Add commands:

[/settings/external scripts/scripts]
reset_iis="C:\Program Files\NSClient++\scripts\resetiis.bat"
reboot="C:\Program Files\NSClient++\scripts\reboot.bat"

Add two new batch files

• C:\Program Files\NSClient++\scripts\reset_iis.bat

iisreset

• C:\Program Files\NSClient++\scripts\reboot.bat

shutdown /r /f

Restart nrpe++ service

Testing the myLVS access

• Reset the IIS on Windows

root@mylvs01:/home/demo# /usr/lib/nagios/plugins/check_nrpe -H 192.168.2.221 -p 5666  -c reset_iis

• Reset the Apache on Linux

root@mylvs01:/home/demo# /usr/lib/nagios/plugins/check_nrpe -H 192.168.2.222 -p 5666  -c reset_apache

• Reboot Windows

root@mylvs01:/home/demo# /usr/lib/nagios/plugins/check_nrpe -H 192.168.2.221 -p 5666  -c reboot

• Reboot Linux

root@mylvs01:/home/demo# /usr/lib/nagios/plugins/check_nrpe -H 192.168.2.222 -p 5666  -c reboot