Jerry Geis wrote: > I am using centos 5.1. I want to keep my machines always powered on. > Some machines (important ones) are UPS'd. > > I have also set in the BIOS (gigabyte motherboard) the power options > that after power loss should do a full on. > > The other day we had just a momentary power drop. > the UPS machines had no issue of course with that. > > However, the other machines did not come back on. > > Is there anything additional in Centos that can help ensure > this machines turn back on. Perhaps something in acpi stuff? > Does that need setup? > > Thanks for the discussion. > > Jerry > > No. If a PC is powered off, the OS (regardless of which OS), won't be able todo anything about it, since an OS is loaded after the PC's BIOS & POST. The only way around this, is setup something like nagios on another server (you could have a few servers running with Nagios, monitoring each other), which can then send a WOL (Wake On Lan) signal to the PC's that have switched off. Some more expensive UPS's have a function to turn PC's on when they're on -- Kind Regards Rudi Ahlers CEO, SoftDux Web: http://www.SoftDux.com Check out my technical blog, http://blog.softdux.com for Linux or other technical stuff, or visit http://www.WebHostingTalk.co.za for Web Hosting stugg