nagios machine: sudo aptitude install nagios2
watched machine(example.com): sudo aptitude install nagios-plugins-basic
On both machines: create a new home dir for the nagios user:
sudo -i
mkdir /home/nagios
chown nagios:nagios /home/nagios
vipw
^D
In `vipw’ find the user nagios and edit home dir and login shell to /home/nagios and /bin/bash.
On nagios machine: create SSH key pair:
sudo su nagios
ssh-keygen
ssh-copy-id root@example.com
#
ssh root@example.com
mkdir /home/nagios/.ssh
cp .ssh/authorized_keys /home/nagios/.ssh
chown -R nagios:nagios /home/nagios/.ssh
^D
#
ssh example.com w
^D
* edit /etc/nagios2/commands.cfg
* edit /etc/nagios2/conf.d/services_nagios2.cfg