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Mounting Linux volumes with systemd vs fstab

Mounting Linux volumes with systemd vs fstab

If you have ever done anything more than just an out of the box linux installation you have more than likely worked with fstab to get your volumes to mount.  The screenshot to the left shows and example of an fstab file.  In this example we are going to look at /dev/sda6 which is mounted to /apps using the XFS file partition and using the defaults.  In the sample fstab file you will also notice other volumes mounted using UUID and also the...

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Using VLAN’s to keep your IoT devices separate from your main network.

Using VLAN’s to keep your IoT devices separate from your main network.

Just over a month ago I decided it was time to  upgrade my home network and get rid of those troublesome consumer APs and routers that had numerous security flaws on them.  I went with Ubiquiti Networks as I liked the price point, and the options I had with the firewall, AP’s, and switches.  The switches also gave me the ability to use VLANs without costing a fortune either.  I also have a handful of IoT devices that may or may not...

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How to reset an unknown root password on RHEL/CentOS 7.x

There may come a time in your day to day activities where you need access to a RHEL/CentOS server or workstation and you do not have the root password.  How do you go about changing a password, when you need root access to change passwords.  Fortunately there is a method which is fairly easy that allows you to reset the root password.  You do need physical access to the server however, so this can not be done via SSH or any other remote...

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Changing grub2 boot options on UEFI boot system

Changing grub2 boot options on UEFI boot system

On my workstation at home I have a dual boot with Red Hat Enterprise Linux 7.3 Workstation and Windows 10.  My system boots with UEFI which makes setting up dual boots such as this fairly easy.  I did want to make some changes to the default grub2 menu when my computer boots however.  First while I enjoy working with RHEL, my wife does not, so having the system boot into RHEL by default was causing some unneeded friction.  I also wanted to...

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Red Hat Summit 2017

Red Hat Summit 2017

Red Hat Summit 2017 will be in Boston this year, and I will be going for the first time.  I am looking forward to this conference and working in some of the labs.  The conference itself is three days long in the first week of May.  With my heavy interest in security and networking many of the sessions I am attending are focused around the security track offered by Red Hat.  Below is my current schedule for the week. Tuesday 10:15 –...

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Using Subscription-Manager and YUM in RHEL for new systems with a proxy

After installing RHEL the first steps that you will want to accomplish is registering your system with Red Hat, attaching your system to the appropriate subscription, and running YUM update to bring your system up to date.  If this is within a corporate network many times you’ll run into the problems of not being able to connect to the Red Hat network until you make some configuration changes both within Subscription Manager, and...

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DNF / YUM History

Accidents can happen at any time on a computer system.  Some small, some painfully large.  One of such accidents can be removing or installing software in Linux and it causing havoc in your system.  When you run a DNF remove command it does list all the packages and dependencies that are going to be removed and gives you the opportunity to abort.  The problem can come into play if you get too complacent and just hit yes, or are just...

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