diff --git a/manifests/pool.pp b/manifests/pool.pp
index 87f4cca9..522a98ad 100644
--- a/manifests/pool.pp
+++ b/manifests/pool.pp
@@ -43,6 +43,10 @@
 #   Optional. Default is undef.
 #   Increase or decrease the replica level of a pool.
 #
+# [*tag*] Pool tag.
+#   Optional. Default is undef.
+#   cephfs,rbd,rgw or freeform for custom application.
+#
 # [*exec_timeout*] The default exec resource timeout, in seconds
 #   Optional. Defaults to $::ceph::params::exec_timeout
 #
@@ -51,6 +55,7 @@ define ceph::pool (
   $pg_num = 64,
   $pgp_num = undef,
   $size = undef,
+  $tag = undef,
   $exec_timeout = $::ceph::params::exec_timeout,
 ) {
 
@@ -107,6 +112,19 @@ test $(ceph osd pool get ${name} size | sed 's/.*:\s*//g') -eq ${size}",
       }
     }
 
+    if $tag {
+      exec { "set-${name}-tag":
+        command => "/bin/true # comment to satisfy puppet syntax requirements
+set -ex
+ceph osd pool application enable ${name} ${tag}",
+        unless  => "/bin/true # comment to satisfy puppet syntax requirements
+set -ex
+ceph osd pool application get ${name} ${tag}",
+        require => Exec["create-${name}"],
+        timeout => $exec_timeout,
+      }
+    }
+
   } elsif $ensure == absent {
 
     exec { "delete-${name}":
diff --git a/spec/defines/ceph_pool_spec.rb b/spec/defines/ceph_pool_spec.rb
index 1510ea1f..5181d013 100644
--- a/spec/defines/ceph_pool_spec.rb
+++ b/spec/defines/ceph_pool_spec.rb
@@ -33,6 +33,7 @@ describe 'ceph::pool' do
           :pg_num  => 3,
           :pgp_num => 4,
           :size    => 2,
+          :tag     => 'rbd',
         }
       end
 
@@ -49,6 +50,9 @@ describe 'ceph::pool' do
         is_expected.to contain_exec('set-volumes-size').with(
           'command' => "/bin/true # comment to satisfy puppet syntax requirements\nset -ex\nceph osd pool set volumes size 2"
         )
+        is_expected.to contain_exec('set-volumes-tag').with(
+          'command' => "/bin/true # comment to satisfy puppet syntax requirements\nset -ex\nceph osd pool application enable volumes rbd"
+        )
         is_expected.not_to contain_exec('delete-volumes')
       }