diff --git a/collectd/files/postgresql.conf b/collectd/files/postgresql.conf
index f2a5a83..210f669 100644
--- a/collectd/files/postgresql.conf
+++ b/collectd/files/postgresql.conf
@@ -13,52 +13,52 @@ LoadPlugin postgresql
   <Query {{ query.name }}>
     {%- if query.statement is defined and query.statement %}
     Statement "{{ query.statement }}"
-    {%- endif %}    
+    {%- endif %}
     {%- if query.param is defined and query.param %}
     Param "{{ query.param }}"
     {%- endif %}
-    {%- for result in query.results %}  
+    {%- for result in query.results %}
     <Result>
       {%- if result.type is defined and result.type %}
       Type {{ result.type }}
       {%- endif %}
       {%- if result.instanceprefix is defined and result.instanceprefix %}
       InstancePrefix "{{ result.instanceprefix }}"
-      {%- endif %} 
+      {%- endif %}
       {%- if result.instancesfrom is defined and result.instancesfrom %}
       InstancesFrom "{{ result.instancesfrom }}"
-      {%- endif %} 
+      {%- endif %}
       {%- if result.valuesfrom is defined and result.valuesfrom %}
       ValuesFrom "{{ result.valuesfrom }}"
       {%- endif %}
     </Result>
     {%- endfor %}
-  </Query>  
+  </Query>
 {%- endfor %}
 
 {%- for db in collectd_settings.plugins.postgresql.databases %}
   <Database {{ db.name }}>
     {%- if db.host is defined and db.host %}
     Host "{{ db.host }}"
-    {%- endif %}    
+    {%- endif %}
     {%- if db.port is defined and db.port %}
     Port "{{ db.port }}"
-    {%- endif %} 
+    {%- endif %}
     {%- if db.user is defined and db.user %}
     User "{{ db.user }}"
-    {%- endif %} 
+    {%- endif %}
     {%- if db.pass is defined and db.pass %}
     Password "{{ db.pass }}"
-    {%- endif %} 
+    {%- endif %}
     {%- if db.sslmode is defined and db.sslmode %}
     SSLMode "{{ db.sslmode }}"
-    {%- endif %} 
+    {%- endif %}
     {%- if db.krbsrvname is defined and db.krbsrvname %}
     KRBSrvName "{{ db.krbsrvname }}"
     {%- endif %}
     {%- if db.service is defined and db.service %}
     Service "{{ db.service }}"
-    {%- endif %} 
+    {%- endif %}
     {%- if db.interval is defined and db.interval %}
     Interval "{{ db.interval }}"
     {%- endif %}
diff --git a/collectd/map.jinja b/collectd/map.jinja
index de06033..9eb9fae 100644
--- a/collectd/map.jinja
+++ b/collectd/map.jinja
@@ -251,4 +251,4 @@
 {% do default_settings.collectd.update(os_map) %}
 
 {# Update settings defaults from pillar data #}
-{% set collectd_settings = salt['pillar.get']('collectd', default=default_settings.collectd, merge=True) %}
\ No newline at end of file
+{% set collectd_settings = salt['pillar.get']('collectd', default=default_settings.collectd, merge=True) %}
diff --git a/collectd/openldap.sls b/collectd/openldap.sls
index 3802127..c5c0a34 100644
--- a/collectd/openldap.sls
+++ b/collectd/openldap.sls
@@ -12,4 +12,3 @@ include:
     - template: jinja
     - watch_in:
       - service: collectd-service
-
diff --git a/collectd/openvpn.sls b/collectd/openvpn.sls
index 3d77f9b..0964ee7 100644
--- a/collectd/openvpn.sls
+++ b/collectd/openvpn.sls
@@ -12,4 +12,3 @@ include:
     - template: jinja
     - watch_in:
       - service: collectd-service
-
diff --git a/collectd/postgresql.sls b/collectd/postgresql.sls
index 1e3a455..ab27e35 100644
--- a/collectd/postgresql.sls
+++ b/collectd/postgresql.sls
@@ -4,6 +4,7 @@
 include:
   - collectd
 
+# Install the required dependency package corresponding to the OS
 collectd-postgresql-pkg-installed:
   pkg.installed:
     - name: {{ collectd_settings.plugin_postgresql.pkg }}
@@ -18,4 +19,4 @@ collectd-postgresql-pkg-installed:
     - watch_in:
       - service: collectd-service
     - require:
-      - pkg: collectd-postgresql-pkg-installed
\ No newline at end of file
+      - pkg: collectd-postgresql-pkg-installed
diff --git a/collectd/rabbitmq.sls b/collectd/rabbitmq.sls
index ca12f88..6df01b8 100644
--- a/collectd/rabbitmq.sls
+++ b/collectd/rabbitmq.sls
@@ -20,4 +20,3 @@ collectd-rabbitmq-module:
     - template: jinja
     - watch_in:
       - service: collectd-service
-
diff --git a/collectd/redis.sls b/collectd/redis.sls
index 381c177..2c4ca22 100644
--- a/collectd/redis.sls
+++ b/collectd/redis.sls
@@ -15,4 +15,3 @@ libhiredis0.13:
     - template: jinja
     - watch_in:
       - service: collectd-service
-
diff --git a/collectd/tcpconns.sls b/collectd/tcpconns.sls
index 4b62773..d7582b5 100644
--- a/collectd/tcpconns.sls
+++ b/collectd/tcpconns.sls
@@ -12,4 +12,3 @@ include:
     - template: jinja
     - watch_in:
       - service: collectd-service
-
diff --git a/collectd/zookeeper.conf b/collectd/zookeeper.conf
index c0f683b..bf26ba7 100644
--- a/collectd/zookeeper.conf
+++ b/collectd/zookeeper.conf
@@ -12,4 +12,3 @@ include:
     - template: jinja
     - watch_in:
       - service: collectd-service
-