Our web server got stuck in some sort of loop where it was consuming a lot of CPU but not serving pages effectively at around 1:38 PM. It slowed the machine down to the point where it was unresponsive to commands.
At 2:46 PM I gave up trying to troubleshoot and rebooted the machine after which it returned to normal operations. I was unable to find anything out of the ordinary in the logs that indicated the reason for it’s behaviour.
After spending a day working on getting a new Fedora 21 server up, I think I’m going to go with Ubuntu instead. The install tools don’t work properly in Fedora 21, and they’re going to replace it with something new and probably even more broken in Fedora 22. Too much revolution instead of evolution in this distribution at this time.
Spam has increased and new techniques spammers are using are getting past the old version of spamassassin we have in place. The version of spamassassin in place is old because it’s the version provided by CentOS 6 which those servers are based upon.
I plan on replacing the servers with new Fedora based installations because Fedora is always current and thus it is easy to compile and install current applications like the most current version of SpamAssassin which is 3.4.0.
The new version of SpamAssassin has a new Bayes engine that has a database back end instead of text files allowing it to store much more information and still process mail in a timely manner and at the same time be more effective.
It has a number of other improvements as well.
I will be making the changes first to the incoming mail servers since most spam originates out there on botnets comprised largely of compromised Windows machines and more recently personal routers that are not properly secured. Once those are up and running, I will put together a replacement client machine.
The Julia programming language has been added to all of our shell servers except debian. I can not find a complete stable release for that platform.
Maintenance is complete on scientific.eskimo.com.
Our shell server, scientific.eskimo.com, will be going down for maintenance. Expected down time is approximately 30 minutes.
Maintenance has been completed on debian.eskimo.com. It is restored to service.
Maintenance on the ftp and web server, ftp.eskimo.com, is complete.
The ftp and web server, ftp.eskimo.com, is going down for maintenance. It will be down for approximately 20 minutes.