Author Archives: jonmoore

Unable to use pvmove

I needed to remove a physical volume from a LVM volume group, and found this is done using the pvmove command.  However, trying to run this, resulted in an immediate, and suprising error # pvmove /dev/sdb1 /dev/sdc1 Required device-mapper target(s) not detected in your kernel After some quick google’ing I found on this list a [...]

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Quick install of Tomcat5 on CentOS

At the office, we’re in the process of doing some work where we need a tomcat server.  Without having to get into things to much, I found this simple method for getting tomcat5 up and running pretty quickly.  I’m sure I’ve left out some important things, and I’m doubtful as to how production ready this [...]

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Burn ISO from command line in Linux

Quick and simple way of burning an ISO image from the command line in Linux.  First, find your devices with wodim, the use the cdrecord command to burn the ISO image. $ wodim –devices wodim: Overview of accessible drives (1 found) : ————————————————————————- 0 dev=’/dev/scd0′ rwrw– : ‘LITE-ON’ ‘DVDRW LH-20A1P’ ————————————————————————- $ cdrecord -v dev=’/dev/scd0′ [...]

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Remove bonded interface in OpenFiler

I decided to try and use NIC bonding in OpenFiler and while things seemed to go well at first, I did run into some issues over time.  I’m still in the process of testing, and I think most of the issues are “user error” and not so much problems with NIC bonding or OpenFiler itself.  [...]

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Open Source storage server

This is not going to be a full review, but more a general take on things. Since moving from VMware Server to ESXi to host my virtual machines, I’ve been very interested in looking into some more of the advanced features of ESX and ESXi yet most of these require iSCSI.  I remember from a [...]

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Installing Dropbox on Ubuntu (and others)

I’ve been using dropbox to sync and share files between my various computers for quite some time, and overall have been very pleased.  However, one area things are not so great… documentation for installation on Linux.  After having to reinstall on my notebook, I decided to somewhat document the hidden part of the process. After [...]

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OhioLinux September 25-27, 2009

This years OhioLinux Fest starts tomorrow and runs until Sunday. I’ll be there. You should to. More info at the OhioLinux website

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Modify Windows XP routing table

During some network changes I’ve found the need to modify the routing table. To change the default route on Windows XP (and possibly Windows Vista, 2000, etc) you use the route command. The syntax is pretty simple, here is a quick example…. route change 0.0.0.0 mask 0.0.0.0 172.18.12.120 To delete or add routes, simply change [...]

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Check speed of connected link in Linux

If you’ve ever wanted to check on the status of your Ethernet links, you’ve probably used the ip commands (or ifconfig) to view some basic information.  However, you might have noticed these commands do not tell you what the current link speed is, or other possibly important details.  That’s where ethtool comes in. [jonmoore@megaton ~]$ [...]

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Cancel a traceroute on Cisco devices

Many times I’ve started a traceroute to either a mistyped IP address, the wrong IP or something else that I would really rather not wait for 30 hops to time out before moving on. When doing the traceroute the device tells yous to “Type escape sequence to abort,” but doesn’t share what exactly this escape [...]

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