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Author Archives: jonmoore
Rewrite incoming CallerID
We’re using asterisk, and as part of the dial plan, a 9 is required before the number to make calls out to the PSTN. Since our phones have a incoming call log, it would be very convient to have asterisk rewrite the CallerID value on calls from the PSTN to include this leading digit. I [...]
Asterisk GotoIf Application
The description from asterisk for this is GotoIf(condition?[labeliftrue]:[labeliffalse]), however for me (being somewhat new to asterisk, and not fully understanding all the little bits, this was a bit confusing. A better way of describing this, at least for those of use new to asterisk, might be GotoIf(condition?[context,priority,labeliftrue]:[context,priority,labeliffalse]).
I have not used labels in the dial plan [...]
Remote packet capture
Had a need to capture some traffic on the remote machine and analyze it in Real Time ™. Found to solutions to this. The first, involved just sending the output of tcpdump across the ssh session.
ssh host.example.org tcpump - eth0 -w - > capture.pcap
The other method, picked up from the wireshark wiki allows for the captured traffic [...]
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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 cause, and 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 [...]
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' Download/archlinux-2009.08-netinstall-i686.iso
Then, you’re done.
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. [...]
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 few [...]
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 downloading [...]
Why use ZFS with FreeNAS?