Category Archives: Configurations

Service Configuration Examples

Published:
March 25, 2009 – 4:15 pm
Author:
By Dave

Installatron Wordpress Upgrade Disables Plugins 3

I just found a quick tip on the Installatron forums.
By default Installatron disables all Wordpress plugins when doing an upgrade. This is due to the Wordpress best practices for upgrading the version of their system. When you have a lot of Wordpress installs to go through this is a big pain because it usually [...]

Categories: Configurations, Software, System Administration, Webdesign

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Published:
March 23, 2009 – 9:14 am
Author:
By Dave

Memory Allocation Problems on Xen Server & Fix 1

Recently I started seeing this error while provisioning Xen VPSes on a server with 8GB of RAM:
[2009-03-23 15:51:40 xend.XendDomainInfo 3310] DEBUG (XendDomainInfo:1603) XendDomainInfo.destroy: domid=None
[2009-03-23 15:51:40 xend 3310] ERROR (xmlrpclib2:184) (12, ‘Cannot allocate memory’)
I checked the memory, and sure enough, all of the VPSes were using up the memory. More specifically, dom0 (the main server) had [...]

Categories: CentOS, Configurations, System Administration, Xen

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Published:
March 17, 2009 – 3:58 pm
Author:
By Dave

Apt-get Update GPG Key Errors and Fix 5

Running sudo apt-get upgrade, I started getting this error:
Reading package lists… Done
W: GPG error: http://ppa.launchpad.net intrepid Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 313D312748A22A95
W: You may want to run apt-get update to correct these problems
Ah ha! But apt-get update is the command causing this problem.
The solution is [...]

Categories: Configurations, Shell, System Administration, Ubuntu

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Published:
January 8, 2009 – 10:28 am
Author:
By Dave

Remote Desktop from Windows XP to Windows Server 2008 or Windows Vista 2

The Remote Desktop connection settings for Windows Server 2008, and I believe Windows Vista, includes 3 levels of service:

Don’t allow connections to this computer
Allow connections from computers running any version of Remote Desktop (less secure)
Allow connections only from computers running Remote Desktop with Network Level Authentication (more secure)

At first blush, you would probably choose the [...]

Categories: Configurations, Security, System Administration, Windows

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Published:
December 29, 2008 – 3:58 pm
Author:
By Dave

Installing VirtualBox on a PAE Kernel System 5

I recently got stuck while trying to install Headless Virtualbox on a Centos 5.2 server per the directions at Howtoforge here. The RPM failed with the error that it couldn’t find the kernel source. I thought I had already installed kernel-devel, and confirmed that I did. The instructions were to define the KERN_DIR variable like [...]

Categories: Configurations, Linux, Programs, Shell, Software, System Administration

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