diff --git a/manifests/config/cluster.pp b/manifests/config/cluster.pp
index cad346a..1a3cc26 100644
--- a/manifests/config/cluster.pp
+++ b/manifests/config/cluster.pp
@@ -13,8 +13,8 @@
     validate_string( $file )
   }
 
-  if ! ($channel in ['carbon_ch', 'fnv1a_ch', 'forward', 'file']) {
-    fail("channel '${channel}' is not in ['carbon_ch', 'fnv1a_ch', 'forward', 'file']")
+  if ! ($channel in ['carbon_ch', 'fnv1a_ch', 'forward', 'file', 'any_of']) {
+    fail("channel '${channel}' is not in ['carbon_ch', 'fnv1a_ch', 'forward', 'file', 'any_of']")
   }
 
   unless is_array( $hosts ) {
diff --git a/manifests/init.pp b/manifests/init.pp
index eb681be..1d951f7 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -181,55 +181,6 @@
   $worker_threads              = $carbon_c_relay::params::worker_threads
 ) inherits carbon_c_relay::params {
 
-  validate_bool(
-    $carbon_cache_statistics,
-    $package_manage,
-    $service_enable,
-    $service_manage,
-    $sorted_matches,
-    $sorted_rewrites,
-  )
-
-  validate_hash(
-    $config_clusters,
-    $config_rewrites,
-  )
-
-  validate_integer([
-    $io_timeout,
-    $limit_no_file,
-    $limit_nproc,
-    $listen,
-    $listen_backlog,
-    $max_stalls,
-    $replication_factor,
-    $server_batch_size,
-    $server_queue_size,
-    $statistics_sending_interval,
-    $worker_threads,
-  ])
-
-  validate_string(
-    $config_file,
-    $group,
-    $init_file,
-    $init_file_ensure,
-    $init_template,
-    $interface,
-    $log_dir,
-    $log_file,
-    $output_file,
-    $package_ensure,
-    $package_name,
-    $pid_dir,
-    $pid_file,
-    $service_ensure,
-    $service_name,
-    $sysconfig_file,
-    $sysconfig_template,
-    $user,
-  )
-
   anchor { 'carbon_c_relay::begin': }
   -> class { '::carbon_c_relay::install': }
   -> class { '::carbon_c_relay::config': }
diff --git a/manifests/install.pp b/manifests/install.pp
index cd60348..40f3942 100644
--- a/manifests/install.pp
+++ b/manifests/install.pp
@@ -8,7 +8,8 @@
 ) {
 
   if $package_manage {
-
+    include epel
+  
     group { $group:
       ensure => present
     }
@@ -19,7 +20,8 @@
     }
 
     package { $package_name:
-      ensure => $package_ensure
+      ensure  => $package_ensure,
+      require => Yumrepo['epel'],
     }
   }
 }
diff --git a/manifests/params.pp b/manifests/params.pp
index af3c569..42718d9 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -10,7 +10,7 @@
   $init_file                   = '/etc/init.d/carbon-c-relay'
   $init_file_ensure            = 'file'
   $init_template               = "carbon_c_relay${init_file}.erb"
-  $interface                   = '0.0.0.0'
+  $interface                   = undef
   $io_timeout                  = 600
   $limit_fsize                 = undef
   $limit_cpu                   = undef
@@ -40,7 +40,7 @@
   $sorted_matches              = true
   $sorted_rewrites             = false
   $statistics_hostname         = undef
-  $statistics_sending_interval = 60
+  $statistics_sending_interval = undef
   $sysconfig_file              = '/etc/sysconfig/carbon-c-relay'
   $sysconfig_template          = "carbon_c_relay${sysconfig_file}.erb"
   $user                        = 'carbon-c-relay'
diff --git a/metadata.json b/metadata.json
index a60d818..01867bd 100644
--- a/metadata.json
+++ b/metadata.json
@@ -8,7 +8,14 @@
   "project_page": "https://github.com/mlambrichs/puppet-carbon_c_relay.git",
   "issues_url": "https://github.com/mlambrichs/puppet-carbon_c_relay/issues",
   "dependencies": [
-    {"name":"puppetlabs-stdlib","version_requirement":">=2.1.3 <5.0.0"}
+    {
+      "name": "puppetlabs-stdlib",
+      "version_requirement":">=2.1.3 <9.0.0"
+    },
+    {
+      "name": "puppet/epel",
+      "version_requirement": ">= 3.0.0 < 5.0.0"
+    }
   ],
   "tags": [
     "carbon-c-relay",
diff --git a/templates/etc/sysconfig/carbon-c-relay.erb b/templates/etc/sysconfig/carbon-c-relay.erb
index af7571b..440f3cc 100644
--- a/templates/etc/sysconfig/carbon-c-relay.erb
+++ b/templates/etc/sysconfig/carbon-c-relay.erb
@@ -24,4 +24,4 @@
 #   -t  config test mode: prints rule matches from input on stdin
 #   -H  hostname: override hostname (used in statistics)
 
-ARGS=-p <%= @listen %> -i <%= @interface %> -w <%= @worker_threads %> -b <%= @server_batch_size %> -q <%= @server_queue_size %> -l <%= @log_dir %>/<%= @log_file %><% if @max_stalls -%> -L <%= @max_stalls %><% end -%><% if @listen_backlog -%> -B <%= @listen_backlog %><% end -%><% if @io_timeout -%> -T <%= @io_timeout %><% end -%><% if @carbon_cache_statistics -%> -m <% end -%><% if @statistics_sending_interval -%> -S <%= @statistics_sending_interval %><% end -%><% if @allowed_chars -%> -c <%= @allowed_chars %><% end -%><% if @statistics_hostname -%> -H <%= @statistics_hostname %><% end -%>
+ARGS=-p <%= @listen %><% if @interface -%> -i <%= @interface %><% end -%> -w <%= @worker_threads %> -b <%= @server_batch_size %> -q <%= @server_queue_size %> -l <%= @log_dir %>/<%= @log_file %><% if @max_stalls -%> -L <%= @max_stalls %><% end -%><% if @listen_backlog -%> -B <%= @listen_backlog %><% end -%><% if @io_timeout -%> -T <%= @io_timeout %><% end -%><% if @carbon_cache_statistics -%> -m <% end -%><% if @statistics_sending_interval -%> -S <%= @statistics_sending_interval %><% end -%><% if @allowed_chars -%> -c <%= @allowed_chars %><% end -%><% if @statistics_hostname -%> -H <%= @statistics_hostname %><% end -%>
diff --git a/templates/usr/lib/systemd/system/carbon-c-relay.service.erb b/templates/usr/lib/systemd/system/carbon-c-relay.service.erb
index 4e4f8b0..7ba73d3 100644
--- a/templates/usr/lib/systemd/system/carbon-c-relay.service.erb
+++ b/templates/usr/lib/systemd/system/carbon-c-relay.service.erb
@@ -8,7 +8,7 @@ User=<%= @user %>
 Group=<%= @group %>
 EnvironmentFile=/etc/sysconfig/<%= @service_name %>
 ExecStart=/bin/carbon-c-relay -f <%= @config_file %> $ARGS
-ExecReload=/bin/kill -HUP ${MAINPID}
+ExecReload=/bin/kill -s HUP $MAINPID
 Type=simple
 <% if @limit_fsize -%>
 # (file size)