** Description changed: in cloud-init users can install packages via cloud-config: #cloud-config packages: [apache2] Due to some intricacies of systemd and service installation that doesn't work all that well. We fixed the issue for simple services that do not have any dependencies on other services, or at least don't check those dependencies well under bug 1575572. We'd like to have a way to fully support this in cloud-init. Related bugs: * bug 1575572: apache2 fails to start if installed via cloud config (on Xenial) * bug 1611973: postgresql@9.5-main service not started if postgres installed via cloud-init * bug 1621336: snapd.boot-ok.service hangs eternally on cloud image upgrades (snapd packaging bug, but this cloud-init fix will workaround it) * bug 1620780: dev-sda2.device job running and times out * bug 1623570: Azure: cannot start walinux agent (Transaction order is cyclic.) - * bug 1623868: cloud-final.service does not run due to dependency cycle + * bug 1623868: cloud-final.service does not run due to dependency cycle + * bug 1627436: [gce] Startup scripts do not run on 1604 images SRU INFORMATION =============== FIX for init-system-helpers: https://anonscm.debian.org/cgit/collab-maint/init-system-helpers.git/commit/?id=1460d6a02 REGRESSION POTENTIAL for init-system-helpers: This changes invoke-rc.d and service, two very central pieces of packaging infrastructure. Errors in it will break installation/upgrades of packages or /etc/network/if- up.d/ hooks and the like. This changes the condition when systemd units get started without their dependencies, and the condition gets weakened. This means that behaviour in a booted system is unchanged, but during boot this could change the behaviour of if-up.d/ hooks (although they have never been defined well during boot anyway). However, I tested this change extensively in cloud images and desktop installations (particularly I recreated https://bugs.debian.org/777113 and confirmed that this approach also fixes it) and could not find any regression. TEST CASE (for both packages): Run lxc launch ubuntu-daily:x --config=user.user-data="$(printf "#cloud-config\npackages: [postgresql, samba, postfix]")" x1 This will install all three packages, but "systemctl status postgresql@9.5-main" will not be running. Now prepare a new image with the proposed cloud-init and init-system- helpers: lxc launch ubuntu-daily:x xprep lxc exec xprep bash # enable -proposed and dist-upgrade, then poweroff lxc publish xprep x-proposed Now run the initial lxc launch again, but against that new x-proposed image instead of the standard daily: lxc launch x-proposed --config=user.user-data="$(printf "#cloud- config\npackages: [postgresql, samba, postfix]")" x1 You should now have "systemctl status postgresql@9.5-main" running. Directly after rebooting the instance, check that there are no hanging jobs (systemctl list-jobs), particularly networking.service, to ensure that https://bugs.debian.org/777113 did not come back. Also test interactively installing a package that ships a service, like "apache2", and verify that it starts properly after installation. Verify that journalctl shows no dependency cycles and that all cloud init services and the target are active: $ systemctl list-units --no-legend --all 'cloud*' cloud-config.service loaded active exited Apply the settings specified in cloud-config cloud-final.service loaded active exited Execute cloud user/final scripts cloud-init-local.service loaded active exited Initial cloud-init job (pre-networking) cloud-init.service loaded active exited Initial cloud-init job (metadata service crawler) cloud-config.target loaded active active Cloud-config availability cloud-init.target loaded active active Cloud-init target
** Description changed: in cloud-init users can install packages via cloud-config: #cloud-config packages: [apache2] Due to some intricacies of systemd and service installation that doesn't work all that well. We fixed the issue for simple services that do not have any dependencies on other services, or at least don't check those dependencies well under bug 1575572. We'd like to have a way to fully support this in cloud-init. Related bugs: * bug 1575572: apache2 fails to start if installed via cloud config (on Xenial) * bug 1611973: postgresql@9.5-main service not started if postgres installed via cloud-init * bug 1621336: snapd.boot-ok.service hangs eternally on cloud image upgrades (snapd packaging bug, but this cloud-init fix will workaround it) * bug 1620780: dev-sda2.device job running and times out * bug 1623570: Azure: cannot start walinux agent (Transaction order is cyclic.) * bug 1623868: cloud-final.service does not run due to dependency cycle - * bug 1627436: [gce] Startup scripts do not run on 1604 images + * bug 1627436: [gce] Startup scripts do not run on 1604 images + * bug 1624596: [azure] ephemeral-disk-warning.service causes ordering cycle on multi-user.target SRU INFORMATION =============== FIX for init-system-helpers: https://anonscm.debian.org/cgit/collab-maint/init-system-helpers.git/commit/?id=1460d6a02 REGRESSION POTENTIAL for init-system-helpers: This changes invoke-rc.d and service, two very central pieces of packaging infrastructure. Errors in it will break installation/upgrades of packages or /etc/network/if- up.d/ hooks and the like. This changes the condition when systemd units get started without their dependencies, and the condition gets weakened. This means that behaviour in a booted system is unchanged, but during boot this could change the behaviour of if-up.d/ hooks (although they have never been defined well during boot anyway). However, I tested this change extensively in cloud images and desktop installations (particularly I recreated https://bugs.debian.org/777113 and confirmed that this approach also fixes it) and could not find any regression. TEST CASE (for both packages): Run lxc launch ubuntu-daily:x --config=user.user-data="$(printf "#cloud-config\npackages: [postgresql, samba, postfix]")" x1 This will install all three packages, but "systemctl status postgresql@9.5-main" will not be running. Now prepare a new image with the proposed cloud-init and init-system- helpers: lxc launch ubuntu-daily:x xprep lxc exec xprep bash # enable -proposed and dist-upgrade, then poweroff lxc publish xprep x-proposed Now run the initial lxc launch again, but against that new x-proposed image instead of the standard daily: lxc launch x-proposed --config=user.user-data="$(printf "#cloud- config\npackages: [postgresql, samba, postfix]")" x1 You should now have "systemctl status postgresql@9.5-main" running. Directly after rebooting the instance, check that there are no hanging jobs (systemctl list-jobs), particularly networking.service, to ensure that https://bugs.debian.org/777113 did not come back. Also test interactively installing a package that ships a service, like "apache2", and verify that it starts properly after installation. Verify that journalctl shows no dependency cycles and that all cloud init services and the target are active: $ systemctl list-units --no-legend --all 'cloud*' cloud-config.service loaded active exited Apply the settings specified in cloud-config cloud-final.service loaded active exited Execute cloud user/final scripts cloud-init-local.service loaded active exited Initial cloud-init job (pre-networking) cloud-init.service loaded active exited Initial cloud-init job (metadata service crawler) cloud-config.target loaded active active Cloud-config availability cloud-init.target loaded active active Cloud-init target -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1576692 Title: fully support package installation in systemd To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-init/+bug/1576692/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
