I'm also taking a look in this one, I couldn't reproduce it (tried 11 times, with the same az-cli command-line provided by gjolly. Found 2 interesting things after Gauthier provide me access to one of his failing instances:
(a) Regarding cloud-init, I see the following in the logs (comparing a GOOD and BAD instance): GOOD: 2021-04-13 19:19:09,341 - DataSourceAzure.py[DEBUG]: Retrieving public SSH keys 2021-04-13 19:19:09,341 - azure.py[DEBUG]: Unable to get keys from IMDS, falling back to OVF 2021-04-13 19:19:09,341 - DataSourceAzure.py[DEBUG]: Retrieved keys from OVF 2021-04-13 19:19:09,342 - handlers.py[DEBUG]: finish: azure-ds/get_public_ssh_keys: SUCCESS: get_public_ssh_keys 2021-04-13 19:19:09,342 - util.py[DEBUG]: Changing the ownership of /home/ubuntu/.ssh to 1000:1000 2021-04-13 19:19:09,343 - util.py[DEBUG]: Reading from /etc/ssh/sshd_config (quiet=False) 2021-04-13 19:19:09,343 - util.py[DEBUG]: Read 3287 bytes from /etc/ssh/sshd_config 2021-04-13 19:19:09,343 - util.py[DEBUG]: Writing to /home/ubuntu/.ssh/authorized_keys - wb: [600] 381 bytes 2021-04-13 19:19:09,343 - util.py[DEBUG]: Changing the ownership of /home/ubuntu/.ssh/authorized_keys to 1000:1000 2021-04-13 19:19:09,344 - util.py[DEBUG]: Changing the ownership of /root/.ssh to 0:0 2021-04-13 19:19:09,344 - util.py[DEBUG]: Reading from /etc/ssh/sshd_config (quiet=False) 2021-04-13 19:19:09,344 - util.py[DEBUG]: Read 3287 bytes from /etc/ssh/sshd_config 2021-04-13 19:19:09,344 - util.py[DEBUG]: Writing to /root/.ssh/authorized_keys - wb: [600] 545 bytes BAD: 2021-04-12 08:25:07,412 - DataSourceAzure.py[DEBUG]: Retrieving public SSH keys 2021-04-12 08:25:07,412 - azure.py[DEBUG]: Unable to get keys from IMDS, falling back to OVF 2021-04-12 08:25:07,412 - azure.py[DEBUG]: No keys available from OVF 2021-04-12 08:25:07,412 - handlers.py[DEBUG]: finish: azure-ds/get_public_ssh_keys: SUCCESS: get_public_ssh_keys 2021-04-12 08:25:07,413 - util.py[DEBUG]: Changing the ownership of /home/ubuntu/.ssh to 1000:1000 2021-04-12 08:25:07,413 - util.py[DEBUG]: Reading from /etc/ssh/sshd_config (quiet=False) 2021-04-12 08:25:07,413 - util.py[DEBUG]: Read 3287 bytes from /etc/ssh/sshd_config 2021-04-12 08:25:07,414 - util.py[DEBUG]: Writing to /home/ubuntu/.ssh/authorized_keys - wb: [600] 0 bytes 2021-04-12 08:25:07,414 - util.py[DEBUG]: Changing the ownership of /home/ubuntu/.ssh/authorized_keys to 1000:1000 2021-04-12 08:25:07,414 - util.py[DEBUG]: Changing the ownership of /root/.ssh to 0:0 2021-04-12 08:25:07,414 - util.py[DEBUG]: Reading from /etc/ssh/sshd_config (quiet=False) 2021-04-12 08:25:07,415 - util.py[DEBUG]: Read 3287 bytes from /etc/ssh/sshd_config 2021-04-12 08:25:07,415 - util.py[DEBUG]: Writing to /root/.ssh/authorized_keys - wb: [600] 0 bytes So, the main difference here is: 2021-04-13 19:19:09,341 - DataSourceAzure.py[DEBUG]: Retrieved keys from OVF vs 2021-04-12 08:25:07,412 - azure.py[DEBUG]: No keys available from OVF Why one method executes from DataSourceAzure.py whereas the other from azure.py? I'm far from expert in cloud-init, so I'll defer that questions to cloud-init folks. Will continue in next comment. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-azure in Ubuntu. https://bugs.launchpad.net/bugs/1919177 Title: Azure: issues with accelerated networking on Hirsute Status in cloud-init: Incomplete Status in cloud-init package in Ubuntu: New Status in linux-azure package in Ubuntu: New Bug description: [General] On Azure, when provisioning a Hirsute VM with Accelerated Networking enabled, sometimes the SSH key is not setup properly and the user cannot log into the VM. [how to reproduce] Start a VM with AN enabled: ``` az vm create --name "$VM_NAME --resource-group "$GROUP" --location "UK South" --image 'Canonical:0001-com-ubuntu-server-hirsute-daily:21_04-daily-gen2:latest' --size Standard_F8s_v2 --admin-username ubuntu --ssh-key-value "$SSH_KEY" --accelerated-networking ``` After a moment, try to SSH: if you succeed, delete and recreate a new VM. [troubleshooting] To be able to connect into the VM to debug, run: ``` az vm run-command invoke -g "$GROUP" -n "$VM_NAME" --command-id RunShellScript --scripts "sudo -u ubuntu ssh-import-id $LP_USERNAME" ``` In "/run/cloud-init/instance-data.json", I can see: ``` "publicKeys": [ { "keyData": "<my-pub-key>", "path": "/home/ubuntu/.ssh/authorized_keys" } ], ``` as expected. To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-init/+bug/1919177/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
