Ask HN: What tools are you using to manage your servers

Well, the 'S' of the SNMP stands for simple, yet, I wonder what is out there that can be described as "SNMP Made Easy". I am looking for a suite of software which not standing in my way, easy to work with (install, configure), and basically requires no maintenance once installed.

I am about to deploy my software on around around 180 remote Linux servers and wants to monitor the servers and configure my daemons all from a centralized point.

Open Source is mandatory.

Since most of YC startups are basically SAAS shaped companies I guess there is enough knowledge amongst us that can be shared and useful for others.

And last thing, I strongly believe providing such suite, end to end solutions, can be a great business for a startup (but that is another story...)