centos7
Add below line into /etc/sudoers on target machine after "Same thing without a password"
jainendra ALL=(ALL) NOPASSWD: ALL
add host ip into /etc/hosts file
add nagios and nrpe serever ip into inventory/nagios-servers
epel-release
iptables
ntp
[jainendra@centos66 Nagios]$ ansible-playbook site.yml -i inventory/nagios-servers
NA
NA