[ubuntu-cloud] EC2 Archive Mirror migration to S3 completed

Ben Howard ben.howard at canonical.com
Fri Jul 6 14:49:05 UTC 2012

In an effort to improve reliability of the Ubuntu archive mirrors, Canonical undertook a project to host the archives utilized by EC2
instances with Amazon's S3.  We announced in April [1] that we would be switching over to the new mirrors and asked users to make preparations.

On June 13th we announced that the us-east-1 region has been switched over to S3 [2]. As of July 5th, 2012, all remaining EC2 regions have been migrated to S3. The immediate effect of this change is that AWS VPC instances will no longer experience bug 615545 [3] and will have access to the default selected Ubuntu mirrors.

Due to a bug in S3's HTTP implementation, users may experience 403, 404 and 416 HTTP errors during update or installation in some EC2 regions. Notably, Ubuntu 11.04 users will see 403 errors while updating the apt meta-data and Ubuntu 10.04, 11.10 and 12.04 users may see hashsum or size mismatches. If you have not applied software updates, then you will need to manually disable http pipelining usage in apt. This can be done simply with:
    $ echo 'Acquire::http::Pipeline-Depth "0";' |
      sudo tee /etc/apt/apt.conf.d/99-no-pipelining

Amazon has informed us that the S3 http pipelining bug has been fixed in us-east-1 and is being rolled out across the remaining EC2 regions. 

We would like to thank all our beta testers that helped to test these new mirrors and provided valuable feedback. 

If you experience any issues with the EC2 mirrors please file a bug against Ubuntu at [4]. 

Thank you,
Ben Howard

[1] https://lists.ubuntu.com/archives/ubuntu-cloud/2012-April/000752.html
[2] https://lists.ubuntu.com/archives/ubuntu-cloud-announce/2012-June/000026.html 
[3] https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/615545
[4] https://bugs.launchpad.net/ubuntu/+filebug


Ben Howard
ben.howard at canonical.com
GPG ID 0x5406A866

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