diff --git a/README.md b/README.md
index 925cda0..ecbd1e2 100644
--- a/README.md
+++ b/README.md
@@ -117,9 +117,7 @@ class { 'zookeeper':
 
 Some reasonable values are:
 
-  * `init` - RHEL6, Debian 7
-  * `upstart` - Ubuntu
-  * `systemd` - RHEL 7, Debian 8
+  * `systemd`
   * `runit`
   * `exhibitor` - zookeeper process and config will be managed by exhibitor (https://github.com/soabase/exhibitor). Exhibitor is not managed by this module.
   * `none` - service won't be installed
@@ -371,12 +369,11 @@ rake beaker:sets
 ## Supported platforms
 
   * Debian/Ubuntu
-    * Debian 6 Squeeze: you can get ZooKeeper package from [Wheezy](http://packages.debian.org/wheezy/zookeeper) or [Sid](http://packages.debian.org/sid/zookeeper) repo.
-    * Debian 7 Wheezy: available in apt repository
   * RedHat/CentOS/Fedora
 
 ### Tested on:
 
-  * Debian 6 - Squeeze, 7 - Wheezy, 8 - Jessie
-  * Ubuntu 12.04.03 LTS, 14.04
-  * RHEL 6, RHEL 7, CentOS 6
+  * Debian (8, 9, 10)
+  * Ubuntu (16.04, 18.04)
+  * RHEL (6, 7)
+  * CentOS (6, 7)
diff --git a/manifests/params.pp b/manifests/params.pp
index bc116e6..8066948 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -13,19 +13,8 @@
   case $os_family {
     'Debian': {
       case $os_name {
-        'Debian': {
-          if versioncmp($os_release, '8') < 0 {
-            $initstyle = 'init'
-          } else  {
-            $initstyle = 'systemd'
-          }
-        }
-        'Ubuntu': {
-          if versioncmp($os_release, '15.04') < 0 {
-            $initstyle = 'upstart'
-          } else {
-            $initstyle = 'systemd'
-          }
+        'Debian', 'Ubuntu': {
+          $initstyle = 'systemd'
         }
         default: { $initstyle = undef }
       }
@@ -42,19 +31,8 @@
     }
     'RedHat': {
       case $os_name {
-        'RedHat': {
-          if versioncmp($os_release, '7') < 0 {
-            $initstyle = 'redhat'
-          } else {
-            $initstyle = 'systemd'
-          }
-        }
-        'CentOS' : {
-          if versioncmp($os_release, '7') < 0 {
-            $initstyle = 'redhat'
-          } else {
-            $initstyle = 'systemd'
-          }
+        'RedHat', 'CentOS': {
+          $initstyle = 'systemd'
         }
         default: {
           $initstyle = undef
diff --git a/manifests/post_install.pp b/manifests/post_install.pp
index 2186306..e88ae45 100644
--- a/manifests/post_install.pp
+++ b/manifests/post_install.pp
@@ -18,19 +18,8 @@
     case $os_family {
       'Debian': {
         case $os_name {
-          'Debian': {
-            if versioncmp($os_release, '8') < 0 { # 3.3.5
-              $_clean = true
-            } else { # future releases
-              $_clean = false
-            }
-          }
-          'Ubuntu': {
-            if versioncmp($os_release, '12.04') < 0 { # 3.3.5
-              $_clean = true
-            } else { # future releases
-              $_clean = false
-            }
+          'Debian', 'Ubuntu': {
+            $_clean = false
           }
           default: {
             fail ("Family: '${os_family}' OS: '${os_name}' is not supported yet")
diff --git a/manifests/service.pp b/manifests/service.pp
index 326d168..a653ff4 100644
--- a/manifests/service.pp
+++ b/manifests/service.pp
@@ -16,28 +16,14 @@
   }
 
   if $::zookeeper::manage_service_file == true {
-    if $::zookeeper::service_provider == 'systemd'  {
-      file { "${::zookeeper::systemd_path}/${::zookeeper::service_name}.service":
-        ensure  => 'present',
-        content => template("${module_name}/zookeeper.service.erb"),
-      }
-      ~> exec { 'systemctl daemon-reload # for zookeeper':
-        refreshonly => true,
-        path        => $::path,
-        notify      => Service[$::zookeeper::service_name],
-      }
-    } elsif (
-      $::zookeeper::service_provider == 'init'
-      or $::zookeeper::service_provider == 'redhat'
-      or $::zookeeper::service_provider == 'debian'
-    )  {
-      file { "/etc/init.d/${::zookeeper::service_name}":
-        ensure  => present,
-        content => template("${module_name}/zookeeper.${facts['os']['family']}.init.erb"),
-        mode    => '0755',
-        before  => Service[$::zookeeper::service_name],
-        notify  => Service[$::zookeeper::service_name],
-      }
+    file { "${::zookeeper::systemd_path}/${::zookeeper::service_name}.service":
+      ensure  => 'present',
+      content => template("${module_name}/zookeeper.service.erb"),
+    }
+    ~> exec { 'systemctl daemon-reload # for zookeeper':
+      refreshonly => true,
+      path        => $::path,
+      notify      => Service[$::zookeeper::service_name],
     }
   }
 
diff --git a/metadata.json b/metadata.json
index a5b96b8..3443b9b 100644
--- a/metadata.json
+++ b/metadata.json
@@ -44,8 +44,6 @@
     {
       "operatingsystem": "Debian",
       "operatingsystemrelease": [
-        "6",
-        "7",
         "8",
         "9",
         "10"
@@ -54,8 +52,6 @@
     {
       "operatingsystem": "Ubuntu",
       "operatingsystemrelease": [
-        "12.04",
-        "14.04",
         "16.04",
         "18.04"
       ]
diff --git a/spec/classes/init_spec.rb b/spec/classes/init_spec.rb
index d6e70e9..ef90b88 100644
--- a/spec/classes/init_spec.rb
+++ b/spec/classes/init_spec.rb
@@ -178,48 +178,6 @@
     it { is_expected.to contain_user('zookeeper').with({:ensure => 'present'}) }
   end
 
-  context 'set pid file for init provider' do
-    let(:params) do
-      {
-      :zoo_dir             => '/usr/lib/zookeeper',
-      :log_dir             => '/var/log/zookeeper',
-      :manage_service      => true,
-      :manage_service_file => true,
-      :service_provider    => 'init',
-    }
-    end
-
-    it do
-      is_expected.to contain_file(
-        '/etc/zookeeper/conf/log4j.properties'
-      ).with_content(/zookeeper.log.dir=\/var\/log\/zookeeper/)
-    end
-
-    context 'set service provider' do
-      it { is_expected.to contain_package('zookeeper').with({:ensure => 'present'}) }
-      it do
-        is_expected.to contain_service(service_name).with({
-        :ensure => 'running',
-        :provider => 'init',
-      })
-      end
-    end
-
-    if os_facts[:osfamily] == 'RedHat'
-      it do
-        is_expected.to contain_file(
-          "/etc/init.d/#{service_name}"
-        ).with_content(/pidfile=\/var\/run\/zookeeper.pid/)
-      end
-    else
-      it do
-        is_expected.to contain_file(
-          environment_file
-        ).with_content(/PIDFILE=\/var\/run\/zookeeper.pid/)
-      end
-    end
-  end
-
   context 'create env file' do
     it do
       is_expected.to contain_file(
diff --git a/spec/classes/service_spec.rb b/spec/classes/service_spec.rb
index 727e6b3..1eb5a32 100644
--- a/spec/classes/service_spec.rb
+++ b/spec/classes/service_spec.rb
@@ -125,36 +125,7 @@
         end
       end
     end
-  when 'init'
-    context 'init' do
-      let :pre_condition do
-        'class {"zookeeper":
-           zoo_dir             => "/usr/lib/zookeeper",
-           log_dir             => "/var/log/zookeeper",
-           manage_service_file => true,
-           service_provider    => "init",
-         }'
-      end
-
-      it do
-        is_expected.to contain_file(
-          '/etc/init.d/zookeeper'
-        ).with({
-          'ensure' => 'present',
-        })
-      end
-
-      it do
-        is_expected.to contain_service('zookeeper').with(
-          :ensure   => 'running',
-          :enable   => true,
-          :provider => 'init',
-        )
-      end
-    end
-  end
 
-  if init_provider != 'upstart'
     context 'custom service name' do
       let :pre_condition do
         'class {"zookeeper":
diff --git a/spec/spec_helper_local.rb b/spec/spec_helper_local.rb
index 92523bb..d5c1d20 100644
--- a/spec/spec_helper_local.rb
+++ b/spec/spec_helper_local.rb
@@ -16,64 +16,17 @@ def get_os_info(facts)
     info[:environment_file] = '/etc/zookeeper/conf/environment'
     info[:should_install_zookeeperd] = true
     info[:zookeeper_shell] = '/bin/false'
-
-    case facts[:os]['name']
-    when 'Debian'
-      if Puppet::Util::Package.versioncmp(facts[:os]['release']['major'], '8') < 0
-        info[:init_provider] = 'init'
-        info[:should_install_cron] = true
-      else
-        info[:init_provider] = 'systemd'
-      end
-    when 'Ubuntu'
-      if Puppet::Util::Package.versioncmp(facts[:os]['release']['major'], '15.04') < 0
-        info[:init_provider] = 'upstart'
-      else
-        info[:init_provider] = 'systemd'
-      end
-
-      if Puppet::Util::Package.versioncmp(facts[:os]['release']['major'], '12.04') < 0
-        info[:should_install_cron] = true
-      end
-    end
+    info[:init_provider] = 'systemd'
   when 'RedHat'
     info[:service_name] = 'zookeeper-server'
     info[:environment_file] = '/etc/zookeeper/conf/java.env'
     info[:should_install_zookeeperd] = false
     info[:zookeeper_shell] = '/sbin/nologin'
-
-    case facts[:os]['name']
-    when 'RedHat'
-      if Puppet::Util::Package.versioncmp(facts[:os]['release']['major'], '7') < 0
-        info[:init_provider] = 'redhat'
-      else
-        info[:init_provider] = 'systemd'
-      end
-    when 'CentOS'
-      if Puppet::Util::Package.versioncmp(facts[:os]['release']['major'], '7') < 0
-        info[:init_provider] = 'redhat'
-      else
-        info[:init_provider] = 'systemd'
-      end
-    end
+    info[:init_provider] = 'systemd'
   end
 
-  case info[:init_provider]
-  when 'init'
-    info[:init_dir] = '/etc/init.d'
-  when 'systemd'
-    info[:init_dir] = '/etc/systemd/system'
-  when 'upstart'
-    info[:init_dir] = '/etc/init'
-  when 'redhat'
-    info[:init_dir] = '/etc/init.d'
-  end
-
-  if info[:init_provider] == 'systemd'
-    info[:service_file] = "#{info[:init_dir]}/#{info[:service_name]}.service"
-  else
-    info[:service_file] = "#{info[:init_dir]}/#{info[:service_name]}"
-  end
+  info[:init_dir] = '/etc/systemd/system'
+  info[:service_file] = "#{info[:init_dir]}/#{info[:service_name]}.service"
 
   return info
 end
diff --git a/templates/zookeeper.Debian.init.erb b/templates/zookeeper.Debian.init.erb
deleted file mode 100644
index 00cfe98..0000000
--- a/templates/zookeeper.Debian.init.erb
+++ /dev/null
@@ -1,187 +0,0 @@
-#! /bin/sh
-### BEGIN INIT INFO
-# Provides:          zookeeper
-# Required-Start:    $remote_fs
-# Required-Stop:     $remote_fs
-# Default-Start:     2 3 4 5
-# Default-Stop:      0 1 6
-# Short-Description: centralized coordination service
-# Description:       ZooKeeper is a centralized service for maintaining
-#                    configuration information, naming, providing distributed
-#                    synchronization, and providing group services.
-### END INIT INFO
-
-# Author: Foo Bar <foobar@baz.org>
-#
-# Please remove the "Author" lines above and replace them
-# with your own name if you copy and modify this script.
-
-# Do NOT "set -e"
-
-ZOOBINDIR="<%= scope.lookupvar("zookeeper::service::_zoo_dir") %>/bin"
-ZOOCFGDIR=<%= scope.lookupvar("zookeeper::cfg_dir") %>
-ZOOCFG="$ZOOCFGDIR/zoo.cfg"
-ZOO_LOG_DIR=<%= scope.lookupvar("zookeeper::log_dir") %>
-
-[ -r "$ZOOCFGDIR/<%= scope.lookupvar("zookeeper::environment_file") %>" ] || exit 0
-. "$ZOOCFGDIR/<%= scope.lookupvar("zookeeper::environment_file") %>"
-
-[ -e "$ZOOCFGDIR/java.env" ] && . "$ZOOCFGDIR/java.env"
-
-[ "x$ZOO_LOG4J_PROP" = "x" ] && ZOO_LOG4J_PROP="<%= scope.lookupvar("zookeeper::log4j_prop") %>"
-
-# PATH should only include /usr/* if it runs after the mountnfs.sh script
-#
-PATH=/sbin:/usr/sbin:/bin:/usr/bin
-DESC="centralized coordination service"
-SCRIPTNAME=/etc/init.d/$NAME
-
-# Read configuration variable file if it is present
-[ -r /etc/default/$NAME ] && . /etc/default/$NAME
-
-for f in ${ZOOBINDIR}/../zookeeper-*.jar
-do
-    CLASSPATH="$CLASSPATH:$f"
-done
-
-ZOOLIBDIR=${ZOOLIBDIR:-$ZOOBINDIR/../lib}
-for i in "$ZOOLIBDIR"/*.jar
-do
-    CLASSPATH="$CLASSPATH:$i"
-done
-
-#add the zoocfg dir to classpath
-CLASSPATH=$ZOOCFGDIR:$CLASSPATH
-
-# Load the VERBOSE setting and other rcS variables
-. /lib/init/vars.sh
-
-# Define LSB log_* functions.
-# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
-. /lib/lsb/init-functions
-
-is_running()
-{
-	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $JAVA --user $USER --test > /dev/null \
-		|| return 1
-    return 0
-}
-
-#
-# Function that starts the daemon/service
-#
-do_start()
-{
-	# Return
-	#   0 if daemon has been started
-	#   1 if daemon was already running
-	#   2 if daemon could not be started
-    is_running || return 1
-
-    if [ ! -d $PIDDIR ]
-    then
-      mkdir -p $PIDDIR
-    fi
-    chown $USER:$GROUP $PIDDIR
-
-    if [ ! -d  $ZOO_LOG_DIR ]
-    then
-      mkdir -p $ZOO_LOG_DIR
-    fi
-    chown $USER:$GROUP $ZOO_LOG_DIR
-
-	start-stop-daemon --start --quiet \
-               --pidfile $PIDFILE \
-               --make-pidfile \
-               --chuid $USER:$GROUP \
-               --background \
-               --exec $JAVA -- \
-                 -cp $CLASSPATH \
-                 $JAVA_OPTS \
-                 $JVM_FLAGS \
-                 -Dzookeeper.log.dir=${ZOO_LOG_DIR} \
-                 -Dzookeeper.root.logger=${ZOO_LOG4J_PROP} \
-                 $ZOOMAIN $ZOOCFG \
-		|| return 2
-}
-
-#
-# Function that stops the daemon/service
-#
-do_stop()
-{
-	# Return
-	#   0 if daemon has been stopped
-	#   1 if daemon was already stopped
-	#   2 if daemon could not be stopped
-	#   other if a failure occurred
-	is_running && return 1
-
-	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE
-	RETVAL="$?"
-	[ "$RETVAL" = 2 ] && return 2
-	# Many daemons don't delete their pidfiles when they exit.
-	[ "$RETVAL" = 0 ] && rm -f $PIDFILE
-	return "$RETVAL"
-}
-
-case "$1" in
-  start)
-        if [ "x$JMXDISABLE" = "x" ]
-        then
-            [ "$VERBOSE" != no ] && log_action_msg "$NAME: JMX enabled by default"
-            # for some reason these two options are necessary on jdk6 on Ubuntu
-            #   accord to the docs they are not necessary, but otw jconsole cannot
-            #   do a local attach
-            JAVA_OPTS="$JAVA_OPTS -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.local.only=$JMXLOCALONLY"
-        else
-            [ "$VERBOSE" != no ] && log_action_msg "$NAME: JMX disabled by user request"
-        fi
-
-	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
-	do_start
-	case "$?" in
-		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
-		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
-	esac
-	;;
-  stop)
-	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
-	do_stop
-	case "$?" in
-		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
-		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
-	esac
-	;;
-  status)
-       status_of_proc -p $PIDFILE "$NAME" "$NAME" && exit 0 || exit $?
-       ;;
-  restart|force-reload)
-	#
-	# If the "reload" option is implemented then remove the
-	# 'force-reload' alias
-	#
-	log_daemon_msg "Restarting $DESC" "$NAME"
-	do_stop
-	case "$?" in
-	  0|1)
-		do_start
-		case "$?" in
-			0) log_end_msg 0 ;;
-			1) log_end_msg 1 ;; # Old process is still running
-			*) log_end_msg 1 ;; # Failed to start
-		esac
-		;;
-	  *)
-	  	# Failed to stop
-		log_end_msg 1
-		;;
-	esac
-	;;
-  *)
-	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
-	exit 3
-	;;
-esac
-
-:
diff --git a/templates/zookeeper.RedHat.init.erb b/templates/zookeeper.RedHat.init.erb
deleted file mode 100644
index c62f717..0000000
--- a/templates/zookeeper.RedHat.init.erb
+++ /dev/null
@@ -1,141 +0,0 @@
-#!/bin/sh
-#
-# zookeeper ZooKeeper Server
-#
-# chkconfig: - 80 05
-# description: Enable ZooKeeper Server
-#
-
-### BEGIN INIT INFO
-# Provides:          zookeeper
-# Default-Start:
-# Default-Stop:
-# Required-Start:    $remote_fs $network
-# Required-Stop:     $remote_fs $network
-# Description:       zookeeper Server
-# Short-Description: Enable zookeeper  Server
-### END INIT INFO
-
-# Source function library.
-. /etc/rc.d/init.d/functions
-
-prog=<%= scope.lookupvar("zookeeper::service_name") %>
-desc="Zookeeper Service"
-
-[ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog
-
-lockfile="/var/lock/subsys/$prog"
-pidfile=<%= scope.lookupvar("zookeeper::pid_path") %>
-
-[ "x$JMXLOCALONLY" = "x" ] && JMXLOCALONLY=false
-
-if [ "x$JMXDISABLE" = "x" ]
-then
-    # for some reason these two options are necessary on jdk6 on Ubuntu
-    #   accord to the docs they are not necessary, but otw jconsole cannot
-    #   do a local attach
-    ZOOMAIN="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.local.only=$JMXLOCALONLY <%= scope.lookupvar("zookeeper::zoo_main") %>"
-else
-    ZOOMAIN=<%= scope.lookupvar("zookeeper::zoo_main") %>
-fi
-
-ZOOBINDIR="<%= scope.lookupvar("zookeeper::service::_zoo_dir") %>/bin"
-ZOOCFGDIR=<%= scope.lookupvar("zookeeper::cfg_dir") %>
-ZOOCFG="$ZOOCFGDIR/zoo.cfg"
-ZOO_LOG_DIR=<%= scope.lookupvar("zookeeper::log_dir") %>
-
-[ -e "$ZOOCFGDIR/java.env" ] && . "$ZOOCFGDIR/java.env"
-[ -e "$ZOOCFGDIR/<%= scope.lookupvar("zookeeper::environment_file") %>" ] && . "$ZOOCFGDIR/<%= scope.lookupvar("zookeeper::environment_file") %>"
-
-[ "x$ZOO_LOG4J_PROP" = "x" ] && ZOO_LOG4J_PROP="<%= scope.lookupvar("zookeeper::log4j_prop") %>"
-
-for f in ${ZOOBINDIR}/../zookeeper-*.jar
-do
-    CLASSPATH="$CLASSPATH:$f"
-done
-
-ZOOLIBDIR=${ZOOLIBDIR:-$ZOOBINDIR/../lib}
-for i in "$ZOOLIBDIR"/*.jar
-do
-    CLASSPATH="$CLASSPATH:$i"
-done
-
-#add the zoocfg dir to classpath
-CLASSPATH=$ZOOCFGDIR:$CLASSPATH
-
-cmd="java  \"-Dzookeeper.log.dir=${ZOO_LOG_DIR}\" \"-Dzookeeper.root.logger=${ZOO_LOG4J_PROP}\" -cp ${CLASSPATH} ${JAVA_OPTS} ${JVMFLAGS} ${ZOOMAIN} ${ZOOCFG} & echo \$! > ${pidfile}"
-
-
-start() {
-    echo $pidfile
-    echo -n "Starting $desc $prog: "
-    touch $pidfile && chown <%= scope.lookupvar("zookeeper::user") %> $pidfile
-    daemon --user <%= scope.lookupvar("zookeeper::user") %> --pidfile $pidfile "$cmd"
-    retval=$?
-    echo
-    [ $retval -eq 0 ] && touch $lockfile
-    return $retval
-}
-
-stop() {
-    echo -n $"Stopping $prog: "
-    killproc -p $pidfile  $prog
-    retval=$?
-    echo
-    [ $retval -eq 0 ] && rm -f $lockfile
-    return $retval
-}
-
-restart() {
-    stop
-    start
-}
-
-reload() {
-    restart
-}
-
-get_status() {
-    if [ -f $pidfile ]
-    then
-      PID=`cat $pidfile`
-      if [ -z "`ps -ef | awk '{print $2}' | grep "^$PID$"`" ]
-      then
-        echo "$prog stopped but pid file exists"
-        exit 1
-      else
-        echo "$prog running with pid $PID"
-        exit 0
-      fi
-    else
-      echo "$prog stopped"
-      exit 1
-    fi
-}
-
-case "$1" in
-    start)
-        start
-        ;;
-    stop)
-        stop
-        ;;
-    restart)
-        restart
-        ;;
-    reload)
-        reload
-        ;;
-    condrestart)
-        [ -e /var/lock/subsys/$prog ] && restart
-        RETVAL=$?
-        ;;
-    status)
-        get_status
-        ;;
-    *)
-        echo $"Usage: $0 {start|stop|restart|reload|condrestart|status}"
-        RETVAL=1
-esac
-
-exit $RETVAL