View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000436 | AlmaLinux-9 | cloud-init | public | 2023-10-27 00:36 | 2023-10-27 20:05 |
| Reporter | kevbo | Assigned To | elkhan | ||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | assigned | Resolution | open | ||
| Summary | 0000436: AWS EC2 images don't work on an IPv6 only Subnet | ||||
| Description | AlmaLinux 9 won't properly initialize on an IPv6 only Subnet in EC2 | ||||
| Steps To Reproduce | Create an IPv6 only Subnet in your VPC (choose "No IPv4 CIDR". Launch an instance (I used ami-0cee948d95563ce2c, us-east-2 AARCH64). Use the IPv6 only subnet as its subnet. Watch the boot using the Serial Console. It kind of hangs at the end of the kernel init, and finally will show a login prompt. It doesn't appear that cloud-init works. (I mounted the image in another instance and saw there was no key in ~ec2-user/.ssh/authorized-keys.) I can't connect to the instance with SSH. | ||||
| Additional Information | This is likely due to: https://github.com/canonical/cloud-init/issues/4540 and https://issues.redhat.com/browse/RHEL-7278 However...if you launch AWS Linux 2023 or Debian 12 (I tested 2023-10-13), they work. They both use cloud-init. Which means, this is possible. (Note: Fedora 38 also has the problem...which means AWS Linux fixed the issue, but somehow it didn't make its way to Fedora. Thanks guys.) I don't know if this is the kind of thing that Alma might be willing to deviate from upstream for. Also, who knows how long it will take upstream to fix. | ||||
| Tags | No tags attached. | ||||
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Hi kevbo, Thanks a lot for your contribution. https://issues.redhat.com/browse/RHEL-7278: This is fixed[^1] on 22.2 version of Cloud-init. Since, the Cloud-init packages on AlmaLinux OS 8.9 and 9.3 are rebased from the 23.1.1 upstream, the patch already included[^2]. https://github.com/canonical/cloud-init/issues/4540: We are closely monitoring the upstream patch[^3] which is currently work in progress with implementation of unit tests. Once it's merged we will backport it. [^1]: https://github.com/canonical/cloud-init/pull/1160/ [^2]: https://git.almalinux.org/rpms/cloud-init/src/branch/a9-beta [^3]: https://github.com/canonical/cloud-init/pull/4547 |
