[Bug 1462495] Re: [sru] Init file does not respect the LSB spec.

[Jorge Niedbalski]

** Changed in: haproxy (Ubuntu)
       Status: In Progress => Fix Released

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Title:
  [sru] Init file does not respect the LSB spec.

Status in haproxy package in Ubuntu:
  Fix Released
Status in haproxy source package in Trusty:
  In Progress
Status in haproxy source package in Utopic:
  In Progress

Bug description:
  [Environment]

  Trusty 14.04.2

  [Description]

  Looking in the /etc/init.d/haproxy script, particularly the stop
  method, is returning 4 in case of the pidfile doesn't exists.

   /bin/kill $pid || return 4.

  According to the spec that means 'insufficient privileges' which is not correct. This is causing pacemaker and other
  system monitoring tools to fail because it doesn't complains with LSB.

  An example:

  Jun  2 12:52:13 glance02 crmd[2518]:   notice: process_lrm_event: glance02-res_glance_haproxy_monitor_5000:22 [ haproxy dead, but /var/run/haproxy.pid exists.\n ]
  Jun  2 12:52:13 glance02 crmd[2518]:   notice: process_lrm_event: LRM operation res_glance_haproxy_stop_0 (call=33, rc=4, cib-update=19, confirmed=true) insufficient privileges

  Reference:

  haproxy_stop()
  {
      if [ ! -f $PIDFILE ] ; then
          # This is a success according to LSB
          return 0
      fi
      for pid in $(cat $PIDFILE) ; do
          /bin/kill $pid || return 4
      done
      rm -f $PIDFILE
      return 0
  }

  [Impact]

  * Pacemaker or any other system monitoring tool that relies
  on a proper exit code could fail as this doesn't complains with LSB.

  [Test Case]

  * Kill manually the process and then stop haproxy on Trusty/Utopic and
  check exit code.

  $ sudo killall -9 haproxy
  $ sudo service haproxy stop | echo $?

  [Regression Potential]

  * If any application or shell script is relying on a wrong exit code
  4 , then it could be affected by this change.

  [Proposed solution]

  Backport the current devel (wily) init.

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