On Tue, September 30, 2014 12:08 pm, m.roth at 5-cent.us wrote: > Leon Fauster wrote: >> I would like to setup a small system based on CentOS6 >> "power outage"-save as possible. The hardware will be >> switch off by pulling the plug. >> >> To accomplishing this goal, I would mounting some fs parts >> readonly (e.g. /usr) and thinking about tmpfs for volatile >> parts (e.g. lock, run under var). Additionally "optimize" >> some vm.dirty_* kernel- and fs/ext4 parameters. /persistent >> would be used with jffs2 on a CF card. So far the theory. >> >> Does anyone have some experience with such type of systems? >> Any pointer to pitfalls are welcome. >> > Put it on a UPS, and install apcupsd. > I would say almost the same: put it behind _APC_ UPS, and install apcupsd. As apcupsd will is designed to talk to APC made UPSes. It may talk nicely to other brands, but I myself do not take chances. And APC is the best in my experience. (Of course, there will be a couple of brands with hardware on the same level...) Valeri ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++