![]() It went offline around 01:00 UTC, but is back up now. quote:Due to some network reconfiguring on our subnet here at the lab, the database server shut itself down fearing there was a power outage. It was offline for just over 24 hours, so many connections will be dropped as the servers try to catch up. The 2 last outages, from main page:quote:Our data server internet link returned this morning at 10:00 UTC (3:00am PDT). ![]() In the meantime, all the important servers are protected, just not in the most ideal/elegant manner. We still have some significant server reorganization to deal with before implementing it, but this card will better ensure graceful shutdowns in the event of a random power failure. In other news, we had a short, unannounced outage yesterday to test a new UPS management card. Please note that this backlog only affected the reporting of the stats, not the actual stats themselves. This has become unacceptable, obviously, so for the time being we're going to run the stats data dumps on the master. Anyway, since we've been purging rows from the master database, this means the replica also has an excess of extra updates, and has fallen as much as 4 days behind. Under normal conditions the replica stays fairly up to date, only falling a few minutes behind at peak times. Reminder: the replica currently runs on a much slower machine than the master, and has a hard time staying current (every update on the master also has to happen on the replica). Well, since we've been busy purging old results from the master database, the replica has been unable to keep up. So to protect the master we run these dumps on the replica. Most queries are made on the master database, but the stats dumps are too huge and I/O intensive. Here's why: these stats pages use data snapshots which we take every 24 hours on our replica database server. quote:Ap21:00 UTC Another general update here from BOINC server land: Several users have been complaining that the third party stats pages are falling behind, i.e. quote:ApVolunteers have ported and BOINC to a variety of platforms, including Solaris/Opteron, Linux/Opteron, Linux/PPC, and FreeBSD. Or they may become splitter servers, in case we can't keep up with workunit production demand. The web server is doing just fine, but in anticipation of higher demand and possibly more site features we are working on setting up a bank of SunFire V100s to be backup web servers. We have the option of splitting uploads and downloads onto separate servers as well. ![]() Then galileo will shed its large, unwieldy disk enclosures and be in the running as a good replacement for the data server (currently a 2 CPU/2 GB Sun D220R). Fairly soon, the master science database will move off of galileo (a 6 CPU/6 GB Sun E3500) and onto castelli (an 8 CPU/7 GB Sun E3500 which faster/larger/RAIDed disks). The data server (which handles uploads/downloads) is also on the brink of being unable to keep up with demand, so we are going to deal with this as well. Right now the replica is not being used for production (only for backups), so this isn't a major problem yet. As classic ramps down and more users join the database server is keeping up, but the replica is having a harder time of it. This was spotted and fixed, and immediately all system temps went down as much as 8 degrees (Celsius) and various fibre channel warnings disappeared from our system logs. Due to low levels of freon the air conditioner in our server closet hasn't been doing its job. First off, our cooling situation vastly improved yesterday. quote:Ap18:30 UTC It's been a while, so here's a general update about how things are going around here in SETI/BOINC server land. quote:ApYou can now select a language for this site without changing your browser's language preference. Quote:ApWe have temporarily taken down 4.10 it did not solve the graphics problem.
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