[DRE-maint] [Bug 987207] Re: Puppetmaster-passenger will not start after reinstalling due to libapache2-mod-passenger

[James Page]

libapache2-mod-passenger postinst script incorrectly assumes that if a
version number is passed in its an upgrade - but that actually means
'last configured version' which as the package was not purged was the
same version.

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https://bugs.launchpad.net/bugs/987207

Title:
  Puppetmaster-passenger will not start after reinstalling due to
  libapache2-mod-passenger

Status in “passenger” package in Ubuntu:
  Triaged

Bug description:
  As requested by Micah Gersten:

  When purging and installing puppetmaster-passenger again it wont
  start. This is somehow due to a2enmod passenger which is not executed
  properly. The output of the second install is attached as logfile
  since thats where this bug shows up.

  Howto reproduce on fresh ubuntu precise machine:
  1: aptitude install puppetmaster-passenger
  2: aptitude purge puppetmaster-passenger
  3: aptitude install puppetmaster-passenger.

  First install: apache2 is installed togheter with libapache2-mod-passenger. The install script of libapache2-mod-passenger will make sure a2enmod passenger is executed.
  First purge: libapache2-mod-passenger gets removed, and mod-passenger is disabled (apache2 is not removed though)
  Second install: libapache2-mod-passenger is installed again, but not enabled.

  The workaround to properly reinstall without running into problems is
  to completely remove puppetmaster-passenger and libapache2-mod-
  passenger:

  1: aptitude install puppetmaster-passenger
  2: aptitude purge puppetmaster-passenger
  3: aptitude purge libapache2-mod-passenger
  4: aptitude install puppetmaster-passenger

  As far as I can see the problem is that when puppetmaster-passenger is
  purged the dependency libapache2-mod-passenger doesnt get properly
  removed. The next time puppetmaster-passenger is installed the
  dependency mod-passenger wont get enabled. Im not sure if this is a
  bug in the dependency control, or a bug in the install/remove scripts
  from libapache2-mod-passenger.

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