CentOS7 / DNS UP

     I’ve resolve the issues with systemd configuration on centos7.eskimo.com.  It and the DNS server at (ns2.eskimo.com) are both online.  The system has been imaged so if there is a need for it to be restored, it will be restored with the proper fixes in place.

Centos7 /

     The shell server centos7.eskimo.com and the DNS server at which resides on that machine will be up and down intermittently as I work to resolve a problem with the systemd configuration.


John 20:24-31King James Version (KJV)

24 But Thomas, one of the twelve, called Didymus, was not with them when Jesus came.

25 The other disciples therefore said unto him, We have seen the Lord. But he said unto them, Except I shall see in his hands the print of the nails, and put my finger into the print of the nails, and thrust my hand into his side, I will not believe.

26 And after eight days again his disciples were within, and Thomas with them: then came Jesus, the doors being shut, and stood in the midst, and said, Peace be unto you.

27 Then saith he to Thomas, Reach hither thy finger, and behold my hands; and reach hither thy hand, and thrust it into my side: and be not faithless, but believing.

28 And Thomas answered and said unto him, My Lord and my God.

29 Jesus saith unto him, Thomas, because thou hast seen me, thou hast believed: blessed are they that have not seen, and yet have believed.

30 And many other signs truly did Jesus in the presence of his disciples, which are not written in this book:

31 But these are written, that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through his name.

     It seems appropriate that we’d have a full lunar eclipse this weekend, the light momentarily snuffed out only to return minutes later.  But the moon feels nothing, Jesus suffered greatly for our sins, for us to have life.

Kernel Upgrade Failed

     The kernels I built did not work properly.  One machine just hung with a flashing cursor.  The other booted and ran and actually performed quite well however it would not respond to a USB keyboard and mouse so I suspect I removed some necessary hardware support.

     Not this week but in time I am going to build some kernels with the same configuration as the existing kernels with all the added stuff defaulted so I can determine if it’s an issue with that version of kernel or a configuration item.

     The kernels are identical configurations on almost identical hardware.  Nothing logged gives me a clue. On the machine that hung there are no error messages.

Shell Servers Interruption

     I inadvertently booted the wrong machine while testing kernels and booted one of the hosts instead of the test guest machine.  This affected shell servers debian, mint, ubuntu, scientific, scientific7, opensuse, and fedora.

These are all back online now.

     This will happen again sometime after 11pm but on purpose if all goes more according to plan than it has thus far.

Maintenance This Evening 11pm+

     This evening, starting at around 11PM, I hope to get the host machines up on Linux 3.3.8 and using a pre-emptive kernel.

     This will require reboots, maybe more than one if the first attempt doesn’t work, and each reboot involves hibernating all the guests, rebooting, then restoring them.

     Each server will freeze for approximately 1/2 hour during the process.  If you are on one of these and you are using x2go or nx clients, you will be able to re-attach to your session after the server comes back to life and pick up where you left off.

     I now have all the EL6 derived guest machines (CentOS 6.x and Scientific Linux 6x) on version 3.3.8 with pre-emptive kernels and the non-EL6 guest machines on 3.19.3 with pre-emptive kernels.

     This makes it possible for example to go to a server with x2go, fire up Firefox, go to youtube and, if you have an adequately fast internet connection, play a video reasonably smoothly.  It improves the general responsiveness of the servers.  With the old kernels, even if you had the bandwidth you’d only see around 10 frames per second on the video.

     I have resolved the issues between the old NFSv4 implementation and the new so older pre 3.4.0 kernels now communicate properly with post 3.4.0 kernels and id mapping works properly across the board with NFSv4.

Evolution of Geek

Live Customer Service

     Live customer service will be unavailable between approximately 7pm-8:30pm on Wednesday April 1st.

     If you call please leave a message with your name, login, telephone number, the nature of your issue, and how late it is okay to get back to you.  If I return before that time I will return your call, even if it is after 9pm.

Customer Service

Kernel Upgrades on Ubuntu and Debian

     I upgraded the Ubuntu kernel to 3.16.32-lowlatency and Debian to 3.19.3 built from source with pre-emptive kernel option.  I also somewhat cleaned up the start-up scripts on Debian.

     This fixed a stuttering video problem on Ubuntu when viewing a Youtube video via Firefox over X2Go.

     On Debian, it significantly reduced the time for the Maté desktop to come up.

     Let me know if I broke anything in the process.

     One thing I did learn of interest, a current 3.19.3 NFS version 4 client will interoperate properly with a 2.6.26 NFS version 4 server if the current nfs-utils are installed and everything is configured properly.


Old Eskimo Server – Parts Needed

     Those of you who would like to see the old ‘eskimo.com’ SunOS 4.1.4 based shell server stay alive please read on.

     One of two things needs to be done, either I’ve got to successfully get this operating under an emulator such as the Qemu Sparc emulation, some people have succeeded, but so far, not I, or I’ve got to find another M-Bus CPU module for this thing (preferably two identical so it can be quad CPU instead of dual CPU as it presently is).

     Getting emulation working would be my preferred option since it would forever eliminate the unobtainable hardware issue but in the meantime hardware is needed.

     I have a spare chassis, motherboard, power supply, but no spare M-Bus CPU modules and these have been the only components that have failed, and these have failed repeatedly.  The unit presently in place occasionally screws up which suggests it may be on it’s way.

     I have searched Google and E-Bay but so far nothing really affordable or if it’s affordable not readily identifiable as compatible.  Any help along these lines would be appreciated.