Today, I took the plunge. I deemed my brand new server (actually, more than a month old already) ready for action. So I made the last few remaining changes, shut down the old server, and rebooted the new with the proper settings… and, ladies and gentlemen, we are now live.
Expect glitches, of course. I already found a few.
The old server, of which I was very fond, had to go. It was really old, the hardware about 7 years. Its video card fan failed, and its CPU fan was also making noises. It was ultra-reliable though. I never tried to make this a record, but it lasted almost three years without a reboot:
12:28:09 up 1033 days, 17:30, 4 users, load average: 0.64, 0.67, 0.77
(Yes, I kept it regularly updated with patches. But the kernel never received a security patch, so no reboot was necessary. And it has been on a UPS.)
This switcharoo was a Big Deal, in part, because I decided to abandon the Slackware ship in favor of CentOS, due to its improved security and, well, systemd. I know systemd is a very polarizing thing among Linux fans, but my views are entirely pragmatic: in the end, it actually makes my life easier, so there.
Anyhow, the new server has already been up 13 minutes, so… And it is a heck of a lot quieter, which I most welcome.