My latest article Build your own DNS name server on Linux, has been posted on Opensource.com. This is the second article in my series on DNS name services.

Published yesterday, April 6, Introduction to the Domain Name System (DNS), talks about how name services work on both the client and server side, and lists some of the more common DNS records and their uses.

You may also be interested in some of my other articles about networking. The following list of articles are posted on my Linux-DataBook website, and may also be posted on Opensource.com.

The following articles are currently posted only on Opensource.com as of April 7, 2017.


This news item in the Washington Post is an interesting and ironic example of the Law of Unintended Consequences.

Helen Beristain voted for Trump despite the fact that her husband, who is from Mexico and is undocumented, warned her that Trump wanted to “…get rid of the Mexicans.” She apparently thought somehow that Trump only meant the “bad” Mexicans.

Too bad for her, because her husband, who has no criminal record of any kind has been deported. It also appears from the WP story that his deportation was expedited so that court rulings to prevent the deportation, at least temporarily so he could have his day in court, would not take place until he had already been removed from the U.S.A.

It is a tragedy that a man who has lived in the U.S. for almost 20 years, raised two children who are American citizens, and paid his taxes, is being forcibly removed from his family. I am not sure how much sympathy I can scrape up for her but that does not make it any less of an injustice.

So much for those “family values” the Republicans keep talking about.

Read the entire article  in the Washington Post and see what you think.

 


My latest article, Introduction to the Domain Name System (DNS), has been posted on Opensource.com. This article talks about how name services work on both the client and server side, and lists some of the more common DNS records and their uses.

You may also be interested in some of my other articles about networking. The following list of articles are posted on my Linux-DataBook website, and may also be posted on Opensource.com.

The following articles are currently posted only on Opensource.com as of April 6, 2017.


It has been a while since I posted anything here. I have been busy doing other things and reading and posting on FaceBook and other social media sites. I am really tired of all the political vitriol I encounter on Facebook, so am spending far less time there. That leaves more time for me to post here.

Of course I will obviously be posting political items here, but you don’t have to read my blog if you don’t like it and I won’t be inflicting my opinions on my FaceBook “friends” who don’t give a rat’s ass about politics, the environment, or anything else I might post here.

Hopefully that will make FaceBook a bit more friendly for you and others.


I will be presenting the talk, SystemV startup vs systemd at All Things Open on Monday, October 19th at 3:25pm. I do not yet know which room I will be in, but that should be available on the schedule when you get to the conference.

systemd is a controversial replacement for the init daemon and SystemV start scripts that is now used by many important distributions. My presentation will cover some of the differences between these two startup systems as well as some basic usage information needed by anyone getting started with systemd.

I hope to see you there.


For a number of reasons, I am closing down the business entity known as Millennium Technology Consulting LLC effective immediately.

I will continue to maintain my DataBook® web site, where I post technical information for Linux system administrators and end users. If you are looking for help with Linux and other Free Open Source Software (FOSS), I post information here that – for me at least – was difficult to find or that took me a lot of time to discover through experimentation.

Because that business subsidised the operation of this web site, that source of financial support is no longer available. So, if you find this web site useful, I ask you to consider supporting it by donating so that it may continue to exist.

Thank you.


23. May 2013 · Comments Off on Coast-to-Coast in my Gen1 Prius · Categories: Environment, Hybrid

Alice and I just completed a coast-to-coast (almost) trip in my gen1, 2001 Prius.

This trip totalled over 5500 miles from Raleigh, North Carolina to Redlands, California, where our daughter and her family live. Much of the trip was through mountains and desert and the air-conditioner was on over 80% of the time. As you can see by the picture below, our mileage for 5526 miles was 41.7 MPG. Pretty darn great for a 12-year old hybrid.

Mileage data for our trip to California from Raleigh, NC

Mileage data for our trip to California from Raleigh, NC

 


So here we are, December 22, 2012, the day after the world was supposed to end according to—no, not the Mayans—the morons.

The Mayans did not predict the end of the world. They created a calendar. The calendar ended yesterday.

Look at the calendar on your wall. It probably ends on December 31, 2012. Does that mean that the world will come to an end at midnight December 31, just because there is not another page to turn?

Of course not. Neither did the end of the Mayan calendar mean the end of the world. If you think so, then send me your contact information as I have a useless survival kit to sell you.

What the Mayan calendar does mean is that the Mayans were very smart. They created a calendar that could be used for millennia and which was accurate to boot. That implies a serious knowledge of astronomy and mathematics.

I can’t wait to see who is going to be next to declare the end of the world, and how it will occur.


I voted early, today.

Have you voted yet? If not, and your state has early voting, you should do so now.

“Those who refuse to participate in politics are destined to be governed by their inferiors.” — Plato


06. October 2012 · Comments Off on “Linux Servers and Advanced System Administration” Class Status · Categories: Linux, Millennium Technology Consulting LLC, Training

The advanced class I have been working on for over a year is nearly ready. This unique class, entitled, Linux Servers and Advanced System Administration covers a wide range of advanced topics in a manner never seen in other courses.

The topics covered in this course (still subject to change) will be:

 Administrative Tools  WordPress and MySQL
 IPTables  MailMan
BIND DNS  VNC
DHCP  NFS
Network Configuration  SAMBA
SSH  NTP
SendMail  CUPS
SpamAssassin  SELinux
MIMEDefang  Building RPMs
Apache Web Server

But it is how the class is structured as much as the specific subjects covered that makes it unique. Most classes that cover these subjects do not cover all of them, and they do not treat them as a part of an integrated whole system. The Linux Servers and Advanced System Administration class treats these as parts of a unified whole

By the end of the class each student will have a fully working Linux system with a firewall; a name server with forward and reverse zones; a DHCP server; an email server with integrated anti-spam; two working web sites with one a static HTML site and the other a complete WordPress site with a MySQL back end; A MailMan mailing list server; A VNC server; NFS and Samba shares. The student will also learn to build RPM packages.

In addition, students will learn advanced aspects of some of the system commands covered in my Theory and Practice of Linux System Administration course, as well as some interesting new commands that can be used for advanced system administration tasks and problem determination.

I expect this course to be ready for a test class in December of 2012. It will be held in my Raleigh, NC, training facility. The exact date is still a bit uncertain but, at this time, I expect it to be the first week of December.

The class will normally cost $2995. There will be discounts available for that session because it will be a test class. As always, the additional $500 discount for TriLUG members will apply. Please contact Millennium Technology Consulting LLC for details.