[Bug 1575572] Re: apache2 fails to start if installed via cloud config (on Xenial)

[Martin Pitt]

This commit fixes the bogus "runlevel fails" check:
http://anonscm.debian.org/cgit/collab-maint/init-system-
helpers.git/commit/?id=2c444f0cd . It does modify behaviour during early
boot, but I think this is a correct change; nevertheless I would *not*
want to SRU this, as this check has been broken forever, and thus
invoke-rc.d happily started stuff in early boot (i. e. during rcS in
SysV terms, before sysinit.target in systemd terms).

This is an SRUable bandaid for the main bug here:
http://anonscm.debian.org/cgit/collab-maint/init-system-
helpers.git/commit/?id=161b76221 . Indeed it would be nicer to fix that
in systemd itself, but as I explained above this will be a lot more
intrusive and much less adequate for an SRU.

** Changed in: init-system-helpers (Ubuntu)
       Status: In Progress => Fix Committed

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Title:
  apache2 fails to start if installed via cloud config (on Xenial)

Status in init-system-helpers package in Ubuntu:
  Fix Committed
Status in systemd package in Ubuntu:
  Won't Fix
Status in init-system-helpers source package in Xenial:
  Triaged
Status in systemd source package in Xenial:
  Won't Fix

Bug description:
  Using the following cloud config, apache2 will fail to start on
  installation on Xenial:

  #cloud-config
  packages:
  - apache2

  See for example:

  $ gcloud compute instances create xenial-$(date +%y%m%d-%H%M) --image ubuntu-1604-xenial-v20160420c --image-project ubuntu-os-cloud --metadata-from-file user-data=cloud-config
  NAME                ZONE            MACHINE_TYPE   PREEMPTIBLE  INTERNAL_IP  EXTERNAL_IP    STATUS
  xenial-160427-1050  europe-west1-d  n1-standard-1               10.240.0.7   104.155.86.94  RUNNING

  $ ssh ubuntu at 104.155.86.94 systemctl status apache2.service
  ● apache2.service - LSB: Apache2 web server
     Loaded: loaded (/etc/init.d/apache2; bad; vendor preset: enabled)
    Drop-In: /lib/systemd/system/apache2.service.d
             └─apache2-systemd.conf
     Active: inactive (dead)
       Docs: man:systemd-sysv-generator(8)

  Related Bugs:
   * bug 1576692: [cloud-init] fully support package installation in systemd

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