diff --git a/manifests/logging.pp b/manifests/logging.pp
index e04b09d..aeab26d 100644
--- a/manifests/logging.pp
+++ b/manifests/logging.pp
@@ -12,6 +12,10 @@
 #    (Optional) Use syslog for logging.
 #    Defaults to $::os_service_default.
 #
+#  [*use_json*]
+#    (Optional) Use json for logging.
+#    Defaults to $::os_service_default.
+#
 #  [*use_stderr*]
 #    (optional) Use stderr for logging.
 #    Defaults to $::os_service_default.
@@ -91,6 +95,7 @@
 
 class zaqar::logging(
   $use_syslog                    = $::os_service_default,
+  $use_json                      = $::os_service_default,
   $use_stderr                    = $::os_service_default,
   $log_facility                  = $::os_service_default,
   $log_dir                       = '/var/log/zaqar',
@@ -123,6 +128,7 @@ class zaqar::logging(
     instance_uuid_format          => $instance_uuid_format,
     log_date_format               => $log_date_format,
     use_syslog                    => $use_syslog,
+    use_json                      => $use_json,
     use_stderr                    => $use_stderr,
     syslog_log_facility           => $log_facility,
     log_dir                       => $log_dir,
diff --git a/releasenotes/notes/log-json-73790092ddf0cc73.yaml b/releasenotes/notes/log-json-73790092ddf0cc73.yaml
new file mode 100644
index 0000000..41c0413
--- /dev/null
+++ b/releasenotes/notes/log-json-73790092ddf0cc73.yaml
@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    Expose use_json logging parameter, which enables JSON formatted logging.
diff --git a/spec/classes/zaqar_logging_spec.rb b/spec/classes/zaqar_logging_spec.rb
index 69fe777..ce4e47b 100644
--- a/spec/classes/zaqar_logging_spec.rb
+++ b/spec/classes/zaqar_logging_spec.rb
@@ -24,6 +24,7 @@ describe 'zaqar::logging' do
      :instance_uuid_format => '[instance: %(uuid)s] ',
      :log_date_format => '%Y-%m-%d %H:%M:%S',
      :use_syslog => true,
+     :use_json => true,
      :use_stderr => false,
      :log_facility => 'LOG_FOO',
      :log_dir => '/var/log',
@@ -48,6 +49,7 @@ describe 'zaqar::logging' do
     it 'configures zaqar logging settings with default values' do
       is_expected.to contain_oslo__log('zaqar_config').with(
         :use_syslog => '<SERVICE DEFAULT>',
+        :use_json   => '<SERVICE DEFAULT>',
         :use_stderr => '<SERVICE DEFAULT>',
         :log_dir    => '/var/log/zaqar',
         :debug      => '<SERVICE DEFAULT>',
@@ -59,6 +61,7 @@ describe 'zaqar::logging' do
     it 'configures zaqar logging settings with non-default values' do
       is_expected.to contain_oslo__log('zaqar_config').with(
         :use_syslog          => true,
+        :use_json            => true,
         :use_stderr          => false,
         :syslog_log_facility => 'LOG_FOO',
         :log_dir             => '/var/log',