diff --git a/test/integration/files/custom_config/elasticsearch b/test/integration/files/custom_config/elasticsearch
new file mode 100644
index 0000000..36540c8
--- /dev/null
+++ b/test/integration/files/custom_config/elasticsearch
@@ -0,0 +1,7 @@
+# Elasticsearch CUSTOM FILE
+
+ES_HOME=/usr/share/elasticsearch
+ES_PATH_CONF=/etc/elasticsearch
+PID_DIR=/var/run/elasticsearch
+ES_JAVA_OPTS=
+ES_STARTUP_SLEEP_TIME=5
diff --git a/test/integration/files/custom_config/jvm.options b/test/integration/files/custom_config/jvm.options
new file mode 100644
index 0000000..71ce100
--- /dev/null
+++ b/test/integration/files/custom_config/jvm.options
@@ -0,0 +1,34 @@
+## JVM configuration CUSTOM FILE
+
+-Xms2g
+-Xmx2g
+-XX:+UseConcMarkSweepGC
+-XX:CMSInitiatingOccupancyFraction=75
+-XX:+UseCMSInitiatingOccupancyOnly
+-Des.networkaddress.cache.ttl=60
+-Des.networkaddress.cache.negative.ttl=10
+-XX:+AlwaysPreTouch
+-Xss1m
+-Djava.awt.headless=true
+-Dfile.encoding=UTF-8
+-Djna.nosys=true
+-XX:-OmitStackTraceInFastThrow
+-Dio.netty.noUnsafe=true
+-Dio.netty.noKeySetOptimization=true
+-Dio.netty.recycler.maxCapacityPerThread=0
+-Dlog4j.shutdownHookEnabled=false
+-Dlog4j2.disable.jmx=true
+-Djava.io.tmpdir=${ES_TMPDIR}
+-XX:+HeapDumpOnOutOfMemoryError
+-XX:HeapDumpPath=${heap.dump.path}
+-XX:ErrorFile=/var/log/elasticsearch/hs_err_pid%p.log
+8:-XX:+PrintGCDetails
+8:-XX:+PrintGCDateStamps
+8:-XX:+PrintTenuringDistribution
+8:-XX:+PrintGCApplicationStoppedTime
+8:-Xloggc:/var/log/elasticsearch/gc.log
+8:-XX:+UseGCLogFileRotation
+8:-XX:NumberOfGCLogFiles=32
+8:-XX:GCLogFileSize=64m
+9-:-Xlog:gc*,gc+age=trace,safepoint:file=/var/log/elasticsearch/gc.log:utctime,pid,tags:filecount=32,filesize=64m
+9-:-Djava.locale.providers=COMPAT
diff --git a/test/integration/files/custom_config/log4j2.properties b/test/integration/files/custom_config/log4j2.properties
new file mode 100644
index 0000000..1573120
--- /dev/null
+++ b/test/integration/files/custom_config/log4j2.properties
@@ -0,0 +1,86 @@
+{% raw %}
+# Log4j CUSTOM FILE
+
+status = error
+logger.action.name = org.elasticsearch.action
+logger.action.level = debug
+appender.rolling.type = Console
+appender.rolling.name = rolling
+appender.rolling.layout.type = ESJsonLayout
+appender.rolling.layout.type_name = server
+rootLogger.level = info
+rootLogger.appenderRef.rolling.ref = rolling
+appender.deprecation_rolling.type = Console
+appender.deprecation_rolling.name = deprecation_rolling
+appender.deprecation_rolling.layout.type = ESJsonLayout
+appender.deprecation_rolling.layout.type_name = deprecation
+appender.deprecation_rolling.layout.esmessagefields=x-opaque-id
+logger.deprecation.name = org.elasticsearch.deprecation
+logger.deprecation.level = warn
+logger.deprecation.appenderRef.deprecation_rolling.ref = deprecation_rolling
+logger.deprecation.additivity = false
+appender.index_search_slowlog_rolling.type = Console
+appender.index_search_slowlog_rolling.name = index_search_slowlog_rolling
+appender.index_search_slowlog_rolling.layout.type = ESJsonLayout
+appender.index_search_slowlog_rolling.layout.type_name = index_search_slowlog
+appender.index_search_slowlog_rolling.layout.esmessagefields=message,took,took_millis,total_hits,stats,search_type,total_shards,source,id
+logger.index_search_slowlog_rolling.name = index.search.slowlog
+logger.index_search_slowlog_rolling.level = trace
+logger.index_search_slowlog_rolling.appenderRef.index_search_slowlog_rolling.ref = index_search_slowlog_rolling
+logger.index_search_slowlog_rolling.additivity = false
+appender.index_indexing_slowlog_rolling.type = Console
+appender.index_indexing_slowlog_rolling.name = index_indexing_slowlog_rolling
+appender.index_indexing_slowlog_rolling.layout.type = ESJsonLayout
+appender.index_indexing_slowlog_rolling.layout.type_name = index_indexing_slowlog
+appender.index_indexing_slowlog_rolling.layout.esmessagefields=message,took,took_millis,doc_type,id,routing,source
+logger.index_indexing_slowlog.name = index.indexing.slowlog.index
+logger.index_indexing_slowlog.level = trace
+logger.index_indexing_slowlog.appenderRef.index_indexing_slowlog_rolling.ref = index_indexing_slowlog_rolling
+logger.index_indexing_slowlog.additivity = false
+appender.audit_rolling.type = Console
+appender.audit_rolling.name = audit_rolling
+appender.audit_rolling.layout.type = PatternLayout
+appender.audit_rolling.layout.pattern = {\
+"type": "audit", \
+"timestamp":"%d{yyyy-MM-dd'T'HH:mm:ss,SSSZ}"\
+%varsNotEmpty{, "node.name":"%enc{%map{node.name}}{JSON}"}\
+%varsNotEmpty{, "node.id":"%enc{%map{node.id}}{JSON}"}\
+%varsNotEmpty{, "host.name":"%enc{%map{host.name}}{JSON}"}\
+%varsNotEmpty{, "host.ip":"%enc{%map{host.ip}}{JSON}"}\
+%varsNotEmpty{, "event.type":"%enc{%map{event.type}}{JSON}"}\
+%varsNotEmpty{, "event.action":"%enc{%map{event.action}}{JSON}"}\
+%varsNotEmpty{, "user.name":"%enc{%map{user.name}}{JSON}"}\
+%varsNotEmpty{, "user.run_by.name":"%enc{%map{user.run_by.name}}{JSON}"}\
+%varsNotEmpty{, "user.run_as.name":"%enc{%map{user.run_as.name}}{JSON}"}\
+%varsNotEmpty{, "user.realm":"%enc{%map{user.realm}}{JSON}"}\
+%varsNotEmpty{, "user.run_by.realm":"%enc{%map{user.run_by.realm}}{JSON}"}\
+%varsNotEmpty{, "user.run_as.realm":"%enc{%map{user.run_as.realm}}{JSON}"}\
+%varsNotEmpty{, "user.roles":%map{user.roles}}\
+%varsNotEmpty{, "origin.type":"%enc{%map{origin.type}}{JSON}"}\
+%varsNotEmpty{, "origin.address":"%enc{%map{origin.address}}{JSON}"}\
+%varsNotEmpty{, "realm":"%enc{%map{realm}}{JSON}"}\
+%varsNotEmpty{, "url.path":"%enc{%map{url.path}}{JSON}"}\
+%varsNotEmpty{, "url.query":"%enc{%map{url.query}}{JSON}"}\
+%varsNotEmpty{, "request.method":"%enc{%map{request.method}}{JSON}"}\
+%varsNotEmpty{, "request.body":"%enc{%map{request.body}}{JSON}"}\
+%varsNotEmpty{, "request.id":"%enc{%map{request.id}}{JSON}"}\
+%varsNotEmpty{, "action":"%enc{%map{action}}{JSON}"}\
+%varsNotEmpty{, "request.name":"%enc{%map{request.name}}{JSON}"}\
+%varsNotEmpty{, "indices":%map{indices}}\
+%varsNotEmpty{, "opaque_id":"%enc{%map{opaque_id}}{JSON}"}\
+%varsNotEmpty{, "x_forwarded_for":"%enc{%map{x_forwarded_for}}{JSON}"}\
+%varsNotEmpty{, "transport.profile":"%enc{%map{transport.profile}}{JSON}"}\
+%varsNotEmpty{, "rule":"%enc{%map{rule}}{JSON}"}\
+%varsNotEmpty{, "event.category":"%enc{%map{event.category}}{JSON}"}\
+}%n
+logger.xpack_security_audit_logfile.name = org.elasticsearch.xpack.security.audit.logfile.LoggingAuditTrail
+logger.xpack_security_audit_logfile.level = info
+logger.xpack_security_audit_logfile.appenderRef.audit_rolling.ref = audit_rolling
+logger.xpack_security_audit_logfile.additivity = false
+logger.xmlsig.name = org.apache.xml.security.signature.XMLSignature
+logger.xmlsig.level = error
+logger.samlxml_decrypt.name = org.opensaml.xmlsec.encryption.support.Decrypter
+logger.samlxml_decrypt.level = fatal
+logger.saml2_decrypt.name = org.opensaml.saml.saml2.encryption.Decrypter
+logger.saml2_decrypt.level = fatal
+{% endraw %}
diff --git a/test/integration/helpers/serverspec/oss_spec.rb b/test/integration/helpers/serverspec/oss_spec.rb
index 0f4ff00..f07ce88 100644
--- a/test/integration/helpers/serverspec/oss_spec.rb
+++ b/test/integration/helpers/serverspec/oss_spec.rb
@@ -1,13 +1,20 @@
 require 'spec_helper'
+require 'shared_spec'
 
 shared_examples 'oss::init' do |vars|
   describe file("/etc/elasticsearch/log4j2.properties") do
     it { should be_file }
     it { should be_owned_by 'root' }
-    it { should_not contain 'CUSTOM LOG4J FILE' }
+    it { should contain 'Log4j CUSTOM FILE' }
   end
   describe file("/etc/elasticsearch/jvm.options") do
     it { should be_file }
     it { should be_owned_by 'root' }
+    it { should contain 'JVM configuration CUSTOM FILE' }
+  end
+  describe file($family['defaults_path']) do
+    it { should be_file }
+    it { should be_owned_by 'root' }
+    it { should contain 'Elasticsearch CUSTOM FILE' }
   end
 end
diff --git a/test/integration/helpers/serverspec/shared_spec.rb b/test/integration/helpers/serverspec/shared_spec.rb
index 0522fe4..4bf94e9 100644
--- a/test/integration/helpers/serverspec/shared_spec.rb
+++ b/test/integration/helpers/serverspec/shared_spec.rb
@@ -2,7 +2,7 @@ require 'spec_helper'
 require 'json'
 vars = JSON.parse(File.read('/tmp/vars.json'))
 
-families = {
+$families = {
   'Debian' => {
     'shell'    => '/bin/false',
     'password' => '*',
@@ -15,7 +15,7 @@ families = {
   }
 }
 
-family = families[vars['ansible_os_family']]
+$family = $families[vars['ansible_os_family']]
 
 es_api_url = "#{vars['es_api_scheme']}://localhost:#{vars['es_api_port']}"
 username = vars['es_api_basic_auth_username']
@@ -88,9 +88,9 @@ shared_examples 'shared::init' do |vars|
     it { should belong_to_group vars['es_group'] }
     it { should have_uid vars['es_user_id'] } if vars.key?('es_user_id')
 
-    it { should have_login_shell family['shell'] }
+    it { should have_login_shell $family['shell'] }
 
-    its(:encrypted_password) { should eq(family['password']) }
+    its(:encrypted_password) { should eq($family['password']) }
   end
 
   describe package(vars['es_package_name']) do
@@ -129,7 +129,7 @@ shared_examples 'shared::init' do |vars|
     end
   end
 
-  describe file(family['defaults_path']) do
+  describe file($family['defaults_path']) do
     its(:content) { should match '' }
   end
 
diff --git a/test/integration/oss.yml b/test/integration/oss.yml
index f94d585..d7ab9b7 100644
--- a/test/integration/oss.yml
+++ b/test/integration/oss.yml
@@ -10,5 +10,8 @@
     es_heap_size: "1g"
     es_plugins:
       - plugin: ingest-attachment
+    es_config_default: "test/integration/files/custom_config/elasticsearch"
+    es_config_log4j2: "test/integration/files/custom_config/log4j2.properties"
+    es_config_jvm: "test/integration/files/custom_config/jvm.options"
 
 #Do not add tests here. This test is run twice and confirms idempotency.