[Bug 1495853] [NEW] puppet service enable broken on ubuntu vivid for services shipping sysvinit and systemd support

[Tero Marttila]

Public bug reported:

Running Puppet on Ubuntu 15.04 Vivid:

	$ lsb_release -d
	Description:	Ubuntu 15.04

	$ apt-cache policy puppet-common
	puppet-common:
		Installed: 3.7.2-1ubuntu2

Using the bird package as an example:

	$ dpkg -L bird | vgrep service unit files
	/lib/systemd/system/bird.service
	/lib/systemd/system/bird6.service
	/etc/init.d/bird6
	/etc/init.d/bird
	/etc/init/bird.conf
	/etc/init/bird6.conf

Puppet appears to choose the debian provider for the bird service, over
the systemd provider:

	$ sudo puppet resource --debug --param provider --param enable service bird
	Debug: Runtime environment: puppet_version=3.7.2, ruby_version=2.1.2, run_mode=user, default_encoding=UTF-8
	...
	Debug: /Service[bird]: Provider debian does not support features flaggable; not managing attribute flags
	...
	Debug: Service bird found in both debian and init; skipping the init version
	...
	Debug: /Service[bird.service]: Provider systemd does not support features flaggable; not managing attribute flags
	...
	Debug: Executing '/etc/init.d/bird status'
	service { 'bird':
	  ensure   => 'stopped',
	  enable   => 'true',
	  provider => 'debian',
	}

This means that while `ensure => running/stopped` works:

	$ sudo puppet resource --debug --param provider service bird ensure=stopped
	Debug: Executing '/etc/init.d/bird status'
	Debug: Executing '/etc/init.d/bird stop'
	Notice: /Service[bird]/ensure: ensure changed 'running' to 'stopped'
	Debug: Finishing transaction 3255100
	Debug: Storing state
	Debug: Stored state in 0.13 seconds
	Debug: Executing '/etc/init.d/bird status'
	service { 'bird':
	  ensure   => 'stopped',
	  provider => 'debian',
	}

The service `enabled => true/false` state does not:

	$ sudo puppet resource --debug --param provider service bird enable=false
	Debug: Executing '/etc/init.d/bird status'
	Debug: Executing '/usr/sbin/update-rc.d bird disable'
	Notice: /Service[bird]/enable: enable changed 'true' to 'false'
	Debug: Finishing transaction 23676980
	Debug: Storing state
	Debug: Stored state in 0.12 seconds
	Debug: Executing '/etc/init.d/bird status'
	service { 'bird':
	  ensure   => 'stopped',
	  enable   => 'false',
	  provider => 'debian',
	}
	$ sudo puppet resource --debug --param provider service bird enable=true
	Debug: Executing '/etc/init.d/bird status'
	Debug: Executing '/usr/sbin/update-rc.d -f bird remove'
	Debug: Executing '/usr/sbin/update-rc.d bird defaults'
	Notice: /Service[bird]/enable: enable changed 'false' to 'true'
	Debug: Finishing transaction 12984740
	Debug: Storing state
	Debug: Stored state in 0.14 seconds
	Debug: Executing '/etc/init.d/bird status'
	service { 'bird':
	  ensure   => 'stopped',
	  enable   => 'true',
	  provider => 'debian',
	}
	$ ls /etc/rc?.d/*bird*
	/etc/rc0.d/K01bird   /etc/rc1.d/K01bird6  /etc/rc3.d/K01bird6  /etc/rc4.d/S02bird   /etc/rc6.d/K01bird
	/etc/rc0.d/K01bird6  /etc/rc2.d/K01bird6  /etc/rc3.d/S02bird   /etc/rc5.d/K01bird6  /etc/rc6.d/K01bird6
	/etc/rc1.d/K01bird   /etc/rc2.d/S02bird   /etc/rc4.d/K01bird6  /etc/rc5.d/S02bird
	$ sudo systemctl is-enabled bird
	disabled

I presume that systemd ignores any sysvinit configuration (/etc/rc?.d/*)
for services that have a native systemd unit, and is thus blind to any
state inspected/changed by puppet's debian service provider.

Workaround is to explcitly use the systemd provider for the service
shipping a native systemd service unit:

	$ sudo puppet resource --debug --param provider --param enable service bird provider=systemd enable=true
	Warning: Setting manifest is deprecated in puppet.conf. See http://links.puppetlabs.com/env-settings-deprecations
	Debug: Executing '/bin/systemctl is-active bird'
	Debug: Executing '/bin/systemctl is-enabled bird'
	Debug: Executing '/bin/systemctl enable bird'
	Notice: /Service[bird]/enable: enable changed 'false' to 'true'
	Debug: Finishing transaction 14759420
	Debug: Storing state
	Debug: Stored state in 0.20 seconds
	Debug: Executing '/bin/systemctl is-active bird'
	Debug: Executing '/bin/systemctl is-enabled bird'
	service { 'bird':
	  ensure   => 'stopped',
	  enable   => 'true',
	  provider => 'systemd',
	}
	$ sudo systemctl is-enabled bird
	enabled

** Affects: puppet (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1495853

Title:
  puppet service enable broken on ubuntu vivid for services shipping
  sysvinit and systemd support

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