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Linux: Replace Disk in MD

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On my lab machines, I use a pair of physical disks, configured in a RAID 1 with MD, with LVM on top of that.  This gives me a lot of flexibility with full redundancy. However recently I had a failure of a drive. Identify the Failure Here is what MD was telling me after I […]

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Bash: Dynamic Volume Group Mounter

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This is similar, but an enhanced version of my custom_mount.sh previously published here: Bash: Automatically Mount File Systems on Volume Group if Present. This previous version was just a simple init script.  This updated version is designed for newer Linux distributions that use Systemd instead of Init. The Code The majority of the work is […]

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Fedora 20: Use PPTP VPN

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I have had this one in the queue for a while (I don’t even run of Fedora 20 anymore).  This one will be short and sweet because there really isn’t a bunch of discussion that needs to go into it. By default Fedora 20 will block outbound PPTP VPN connections. # firewall-cmd –direct –add-rule ipv4 […]

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Fedora 20: Firefox Reports Flash as Vulnerable

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This problem starts with Firefox reporting that your flash-plugin is out of date.  This report looks like this and disables all-flash. After this, we will take a look Mozilla’s Plugin Check to see what it thinks is going on. Now here we can see that version 11.2.202.440 is vulnerable.  We will then check about:plugins to […]

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Linux KVM: Bridging a Bond on CentOS 6.5

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Today we are going to hop back into the KVM fray, and take a  look at using CentOS as a hypervisor., and configuring very resilient network connections to support our guests.  Of course these instructions should be valid on Red Hat Linux and Oracle Linux as well, though there is a little more to be […]

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Voyage Linux: Dialog Error with Apt

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This can happen on other Linux distributions, however, in this case, I found it on Voyage Linux, which is a Linux distribution for embedded hardware. The Error Here we are dealing with an annoyance whenever you use apt-get or aptitude. debconf: unable to initialize frontend: Dialog<br /> debconf: (No usable dialog-like program is installed, so […]

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Voyage Linux: Locale Error with Apt

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Voyage Linux is an embedded linux distribution.  I use it on some ALIX boards I have lying around, it is very stripped down, and as such there are a few annoyances which we have to fix. The Error This issue happens when attempting to install/upgrade packages using apt-get or aptitude. perl: warning: Setting locale failed.<br […]

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SQL Developer Crash on Fedora 20

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I ran into a painful issue on Fedora 20 with SQL Developer.  Basically every time it was launched via the shortcut it would go through loading, and then disappear. Manual Invocation of SQL Developer When launching it via the script itself it gives us a little more information. $ /opt/sqldeveloper/sqldeveloper.sh</p> <p>Oracle SQL Developer<br /> Copyright […]