Technology Errors

Cisco Catalyst 2950: When no shut One VLAN The Other VLAN Goes Down

A couple days ago I was working on the network at the computer shop and ran into an issue configuring the Cisco Catalyst 2950 switch we have on part of the network. The goal was to set up three VLAN’s to segregate traffic on three segments of the network that each have their own purpose. One of the VLAN’s is used by the employees, one VLAN used for the public, and the third VLAN used to host servers that provide various services. I was in a rush to minimize downtime when I was configuring the access to the 2950 switch itself and attempted to assign an IP address to two of the VLAN’s. Below I explain the details of the issue that caused as well as an explanation of why this won’t work.

Technology Errors

You Already Have Different Build Flavor Of Windows Live, Error: 0x80280008, Source: WaitForCatalog

While working on a customers computer this past Sunday afternoon I ran into an issue with Windows Live Essentials while attempting to update all of his programs. The error relates to updating Windows Live Essentials only and can be resolved by either skipping the specified update or really by uninstalling Windows Live Essentials and then reinstalling the components that you use. Below I have noted details about the error followed by how to uninstall Windows Live Essentials 2011.

Technology Errors

Zen Cart New Product Error: 1062 Duplicate entry ‘2147483647’ for key ‘PRIMARY’

A client of mine contacted me earlier because he was unable to add products to his Zen Cart store. I recently installed a couple modules for him and was thinking that the issue may be related to one of the modules however this did not end up being the case. After some investigation I was able to resolve the problem easily by first deleting a product that had been added and then by issuing a SQL command to modify the auto increment numbers for the Zen Cart products table. Below there is more information on the error as well as details on how to resolve the issue.

Technology Errors

Starting vsftpd for vsftpd: 500 OOPS: vsftpd: not configured for standalone, must be started from inetd

Earlier today I was configuring VSFTPD on a new server. After installing via the yum package manager on a CentOS server and copying the configuration from another server to mimic its behavior I attempted to start VSFTD and it failed with the error noted in detail below. After the error details there is information on what caused the problem followed by how I was able to resolve the issue.

Technology Errors

createdb: database creation failed: ERROR: source database “template1” is being accessed by other users

When attempting to create a new database on a PostgreSQL server running walmgr, which is part of SkyTools by Skype Developers, for real time failover I received an error. Initially I was a bit baffled by the error however I remembered after racking my brain for a little bit that you must stop walmgr’s syncdaemon when adding a new database. Below are more details about the error as well as how to stop walmgr’s syncdaemon and then create the new database.