Mail Server

     I broke our client mail server trying to install new SSL certificates.  I do not know why yet but am restoring the previous configuration.  Unfortunately this needs to be resolved soon or our old certificate expires in a couple of days.  I am restoring the unbroken configuration from backup and then will try changing one thing at a time until I figure out what went wrong.

SpamAssassin Fixed

     I did an sa-update -D which tells spamassassin to re-upload the default ruleset and then I restarted it.  After doing this spamassassin begin scoring spam again properly.

     All I can figure is a cron-scheduled sa-update downloaded a broken set of rules.

Reboots July 6th 1AM

     A recent Microcode update for Intel CPUs basically turned our i7-6850k into an i7-6850 (locked multiplier) reducing the speed of the CPU substantially.

     This platform does not require the Linux Microcode anyway as the Microcode provided by the BIOS is already not vulnerable to meltdown and spectre exploits.

     In order to restore full operating speed a reboot is necessary to back out this microcode upgrade.  This machine provides the /home directory for all machines here and also the following shell servers: centos7, fedora, mint, opensuse, scientific, and ubuntu, as well as our web server.

     Anyone logged into those shell servers will be disconnected as they reboot and any home directory I/O will freeze for several minutes on all the other machines.

     This work is scheduled for 1AM and should conclude by 1:15AM if all goes according to plan.

Ubuntu Update

     Ubuntu is back up but it is up as 17.10.  I am presently applying updates to bring it current then will upgrade to 18.04.  This will require several reboots along the way so please do not use this machine unless you’re okay with being disconnected without warning for update reboots.

 

Centos7

      I had the nightly builds x2go server installed on Centos7, today’s update it left it non-functional.  I’ve installed the stable version but the stable version has the wrong version of xrandr and so will not set your screen dimensions.

     A temporary work around until a working nightly builds is released again is to open a terminal and type xrandr -s (width)x(height), for example my screen is 1920×1080 so I type xrandr -s 1920×1080 (return) and then I’m good.

Zorin

     Zorin was down unexpectedly today.  After some exploration I discovered systemctl was broken in such a way that a non-root user could halt the system.  For now I’ve taken public permissions off of systemctl.  I do not know that this is the only way a non-root user can halt the system.