** Description changed: ====== [Bug Description] ====== On Ubuntu 24.04 Minimal EC2 AMIs, cloud-init may fail to retrieve EC2 metadata and userdata on the first boot for certain instance types (notably hpc7a.*, every time on hpc7a.96xlarge). This results in SSH keys from user-data not being applied and prevents SSH access until the instance is rebooted. The issue appears to be caused by a race condition where no eligible network interfaces are present during the init-local stage when the EC2 datasource attempts metadata discovery. - - ====== [Reproducer] ====== + ====== [Reproducer] ====== 1. Launch an Ubuntu 24.04 Noble Minimal EC2 AMI - 2. Use an EC2 instance type where network interfaces may not be immediately available at early boot (e.g. - hpc7a.96xlarge reproduces consistently) + 2. Use an EC2 instance type where network interfaces may not be immediately available at early boot (e.g. + hpc7a.96xlarge reproduces consistently) 3. Wait several minutes after the instance reaches running, then attempt to SSH into the instance You will see this error: ubuntu@<public-ip>: Permission denied (publickey). If you access the machine through the AWS console, you will see the following cloud-init errors: - * Unable to get metadata - * The instance must have at least one eligible NIC + * Unable to get metadata + * The instance must have at least one eligible NIC ====== [Environment Details] ====== * Cloud-init version: cloud-init 25.2-0ubuntu1~24.04.1 * Operating System Distribution: Ubuntu 24.04 LTS (Noble) Minimal AMI * Cloud provider: Amazon EC2, hpc7a.* (notably hpc7a.96xlarge) instances * Kernel: linux-image-6.14.0-1018-aws + ====== [Suggested Fixes] ====== - ====== [Suggested Fixes] ====== - - Include the `ENA_ETHERNET` driver as a built-in module in the noble - generic kernel. + Include the `ENA_ETHERNET` driver as a built-in module in the noble and + questing generic kernel. ====== [Related Links] ====== cloud-init bug: https://github.com/canonical/cloud-init/issues/6697
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2144692 Title: Delayed NIC initialization on hpc7a instances leads to first-boot EC2 metadata failures To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-aws/+bug/2144692/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
