Linode, which hosts our servers, is rolling out fixes for the Meltdown/Spectre bugs. This necessitates a hard reboot of their servers, and that means any guest servers will be down while this happens. beryllium is scheduled for a reboot with a two-hour window starting at 2018-01-17 07:00 AM UTC (02:00 AM EST). The outage should be relatively brief — a matter of just a few minutes.
We expect this will cause our IRC (Internet Relay Chat) service to be unavailable. We do not anticipate any problems, but if things go sideways, I'm sure the community will find a way to let us know via the comments.
Planning ahead, we have learned that lithium, sodium, and boron are all scheduled for a reboot at on 2018-01-18 at 09:00 AM UTC.
We appreciate your understanding and patience as we strive to keep the impact to the site to a minimum.