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
[email protected]
Canonical
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