Tracked in Github Issues as https://github.com/canonical/cloud- init/issues/3619
** Bug watch added: github.com/canonical/cloud-init/issues #3619 https://github.com/canonical/cloud-init/issues/3619 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ifupdown in Ubuntu. https://bugs.launchpad.net/bugs/1867029 Title: Package ifupdown breaks network configuration by cloud-init Status in cloud-init: Fix Released Status in ifupdown package in Ubuntu: New Bug description: It appears the `ifupdown` package breaks networking configuration that cloud-init would normally handle (?) on both providers. The result, if you image an instance with the `ifupdown` package installed, is that the image is not bootable by Azure/AWS. I'm not familiar with how Azure/AWS/etc use cloud-init for network start up however. I'm filing here for now, in case `cloud-init` needs to be more defensive against `ifupdown`. To reproduce with Packer (I confirmed this method): * Add necessary Azure subscription env vars from `ifupdown-bug.json` * `packer build ifupdown-bug.json` * Try to boot an instance with resulting image * Instance will never boot -- more specifically, networking never comes up. See `boot.log` for an example boot To reproduce manually (only a guess, I did not confirm): * Boot 18.04 ubuntu instance * Install ifupdown * Image the instance * Try to boot instance using new image * Instance won't boot I hit this with Packer, creating new images for booting instances in scaling groups -- `ifupdown` is brought in by `salt`. If this is reproducible via manual installation, there could be some backup images/snapshots that are unable to boot though. This appears to be because cloud-init network start up operations are broken by whatever `ifupdown` sysv/systemd scripts perform on boot. With `ifupdown` installed on Azure, `eth0` does not get an IP address, the instance never fully boots according to Azure, and it will enter an error state. On AWS, the instance boots, but network operations like SSH fail. The `boot.log` is from Azure. Eventually `cloud-init` gives an exception (see `exception.log`), but this seems like a secondary issue related to networking being down. I did try to upgrade cloud-init using nightly PPAs (version 20.1 I believe), but no luck. This is on Ubuntu 18.04 instances from Azure marketplace and AWS Canonical AMI, cloud-init version `19.4-33-gbb4131a2-0ubuntu1~18.04.1`. Related: https://github.com/Azure/WALinuxAgent/issues/1612 To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-init/+bug/1867029/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
