Brad Lucas

Programming, Clojure and other interests

Debugging S3 Authorization Issue

May 24, 2011

Recently found an issue with some code running against Amazon’s S3 service. All of a sudden the application, s3cp, was not working as part of our downloader service. The app has been working flawlessly for over a year and suddenly stopped working.

As I tried to debug it I found that the system worked fine locally but not on the server. It was giving an error message around not being able to find one of my accounts buckets. That was odd. First I tried updating the jets3t library used underneath to communicate with S3. The I noticed the server’s Java as bit old but still 1.6. After upgrading both of these still no go.

After taking a break from this I turned on debugging and saw that the authorization interaction with Amazon was returning a 403 error.

To make a long day’s session short for others here is the punch line. Turned out the server’s date was off and Amazon will reject the call if it is too far from the correct time. After setting the servers date and time to the proper value my issue went away.

Continue reading →

Error NT_STATUS_BAD_NETWORK_NAME printing from Mac to Linux Printer

May 11, 2011

Just fixed. Was getting


when printing from my Mac to a printer hanging off a Ubuntu machine.

Having recently upgraded Ubuntu that was probably the culprit.

Continue reading →

Blog up and running

February 22, 2011

Getting the blog up and running after a long hiatus

Continue reading →

Website Grader Report for

February 22, 2011

Continue reading →

Ben Engber In The Wsj

April 21, 2010

Ben Engber over at Thumtack was interviewed by the Wall Street Journal.

"The biggest takeaway was that it's a different world than the one I'm used to," Mr. Engber says, adding that government agencies "want a specific service, and have set criteria to evaluate you." With commercial work, "you can go in and explain what you do and why it's superior," he says.

The article:

Continue reading →