<html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#FFFFFF"> <pre wrap="">Hello, As mentioned earlier [1,2], and in an effort to improve on reliability of the Ubuntu archive mirrors for EC2 instances, Canonical is replacing the existing EC2 archive mirrors with mirrors backed by Amazon S3. This change itself will be done via modification of DNS entries and will be transparent to users. However, due to a bug in the http pipelining implementation in S3 [3], a change to apt configuration needs to be made to avoid download errors. We have chosen to deliver this change via a package upgrade in cloud-init. The *action required* is one of the following: a.) upgrade cloud-init: $ sudo apt-get update ; sudo apt-get install -y cloud-init b.) launch official AMI’s released after 2012-04-01, which will have the fix included. Please see <a class="moz-txt-link-freetext" href="http://cloud-images.ubuntu.com/release">http://cloud-images.ubuntu.com/release</a> for the latest AMI’s. Additionally, the Amazon EC2 Quickstart has been updated with the latest AMI’s. At this time we are still in the process of updating AMIs for Ubuntu 8.04 LTS and Ubuntu 10.10[4]. Announcements will be sent out when they are available. c.) manually disable http pipeline use in apt $ echo 'Acquire::http::Pipeline-Depth "0";' | sudo tee /etc/apt/apt.conf.d/99-no-pipelining Should you choose not to take appropriate action, you will likely experience transient apt downloading errors after the change is implemented. In order to give appropriate time to apply the change, this transition will not occur before April 18, 2012. For users of Ubuntu 8.04 LTS AMIs, you will need to take options 'b' or 'c'. There is not a package update deliverable fix at this time. For Ubuntu 10.10, the update will be released on its end-of-life, which is April 10th, 2012. If you have any questions, please feel free to follow up to this email thread. Thanks, Ben Howard -- [1] <a class="moz-txt-link-freetext" href="https://lists.ubuntu.com/archives/ubuntu-cloud/2012-January/000715.html">https://lists.ubuntu.com/archives/ubuntu-cloud/2012-January/000715.html</a> [2] <a class="moz-txt-link-freetext" href="https://lists.ubuntu.com/archives/ubuntu-cloud/2012-March/000744.html">https://lists.ubuntu.com/archives/ubuntu-cloud/2012-March/000744.html</a> [3] <a class="moz-txt-link-freetext" href="https://bugs.launchpad.net/ubuntu/+source/apt/+bug/948461">https://bugs.launchpad.net/ubuntu/+source/apt/+bug/948461</a> </pre> <pre class="moz-signature" cols="72">-- Ben Howard <a class="moz-txt-link-abbreviated" href="mailto:ben.howard@canonical.com">ben.howard@canonical.com</a> Canonical GPG ID 0x5406A866 </pre> </body> </html>