Public bug reported: Cloud-init is seeing intermittent failures while running `netplan apply`, which appears to be caused by a missing resource at the time of call.
The symptom in cloud-init logs looks like: Running ['netplan', 'apply'] resulted in stderr output: Failed to connect system bus: No such file or directory I think that this error[1] is likely caused by cloud-init running netplan apply too early in boot process (before dbus is active). Today I stumbled upon this error which was hit in MAAS[2]. We have also hit it intermittently during tests (we didn't have a reproducer). Realizing that this may not be a cloud-init error, but possibly a dependency bug between dbus/systemd we decided to file this bug for broader visibility to other projects. I will follow up this initial report with some comments from our discussion earlier. [1] https://github.com/canonical/netplan/blob/main/src/dbus.c#L801 [2] https://discourse.maas.io/t/latest-ubuntu-20-04-image-causing-netplan-error/5970 ** Affects: cloud-init Importance: Undecided Status: New ** Affects: systemd Importance: Undecided Status: New ** Also affects: systemd Importance: Undecided Status: New -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to cloud-init. https://bugs.launchpad.net/bugs/1997124 Title: Netplan/Systemd/Cloud-init/Dbus Race Status in cloud-init: New Status in systemd: New Bug description: Cloud-init is seeing intermittent failures while running `netplan apply`, which appears to be caused by a missing resource at the time of call. The symptom in cloud-init logs looks like: Running ['netplan', 'apply'] resulted in stderr output: Failed to connect system bus: No such file or directory I think that this error[1] is likely caused by cloud-init running netplan apply too early in boot process (before dbus is active). Today I stumbled upon this error which was hit in MAAS[2]. We have also hit it intermittently during tests (we didn't have a reproducer). Realizing that this may not be a cloud-init error, but possibly a dependency bug between dbus/systemd we decided to file this bug for broader visibility to other projects. I will follow up this initial report with some comments from our discussion earlier. [1] https://github.com/canonical/netplan/blob/main/src/dbus.c#L801 [2] https://discourse.maas.io/t/latest-ubuntu-20-04-image-causing-netplan-error/5970 To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-init/+bug/1997124/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
