I was wondering if there is any way to create a base image from scratch ? What I mean is I have a CentOSX machine working, practically I have CentOS 6 on which I have configured Nagios to be operational. It works out-of-box with minimal configuration changes. This Nagios is also monitoring the three remote servers in the network. I understand that there exist CentOS images on hub but I want to do this exercise for deeper understand of how the image is manufactured in first place. Maybe there would be a business case for any company to write their own from scratch…
What I want to do is
a. For fun create a base image form my current VM which is configured with application and tool set I want.
b. I want nagios application be made running in “container” fashion and do exactly the same thing as it is doing now, not sure if that is possible?
Would appreciate input.