Change Environment to EnvironmentFile in systemd unit file

debian/Makefile

@@ -142,7 +142,7 @@ RPM_BUILDING/SOURCES/$(FULL_PACKAGE_TITLE)-$(RPM_VERSION).tar.gz: rpm-build-area
 	rm -rf $(FULL_PACKAGE_TITLE)-$(RPM_VERSION)
 	mkdir $(FULL_PACKAGE_TITLE)-$(RPM_VERSION)
 	cp -R $(DESTDIR)/* $(FULL_PACKAGE_TITLE)-$(RPM_VERSION)
-	sed "s@##RPMVERSION##@$(RPM_VERSION)@g; s@##RPMRELEASE##@$(RPM_RELEASE_ID)@g" <  debian/$(FULL_PACKAGE_TITLE).spec.in > $(FULL_PACKAGE_TITLE)-$(RPM_VERSION)/$(FULL_PACKAGE_TITLE).spec 
+	sed "s@##RPMVERSION##@$(RPM_VERSION)@g; s@##RPMRELEASE##@$(RPM_RELEASE_ID)@g" < debian/$(FULL_PACKAGE_TITLE).spec.in > $(FULL_PACKAGE_TITLE)-$(RPM_VERSION)/$(FULL_PACKAGE_TITLE).spec
 	rm -f $@ && tar -czf $@ $(FULL_PACKAGE_TITLE)-$(RPM_VERSION)
 	rm -rf $(FULL_PACKAGE_TITLE)-$(RPM_VERSION)
 

debian/confluent-kafka-rest

@@ -0,0 +1,14 @@
+# JMX settings
+#KAFKAREST_JMX_OPTS="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false "
+
+# JVM performance options
+#KAFKAREST_JVM_PERFORMANCE_OPTS="-server -XX:+UseG1GC -XX:MaxGCPauseMillis=20 -XX:InitiatingHeapOccupancyPercent=35 -XX:+ExplicitGCInvokesConcurrent -Djava.awt.headless=true"
+
+# Generic JVM settings you want to add
+#KAFKAREST_OPTS=""
+
+# Memory options
+#KAFKAREST_HEAP_OPTS="-Xmx256M"
+
+# Logging directory
+LOG_DIR=/var/log/confluent/kafka-rest

debian/confluent-kafka-rest.service

@@ -7,7 +7,7 @@ After=network.target confluent-kafka.target
 Type=simple
 User=cp-kafka-rest
 Group=confluent
-Environment="LOG_DIR=/var/log/confluent/kafka-rest"
+EnvironmentFile=-/etc/sysconfig/confluent-kafka-rest
 ExecStart=/usr/bin/kafka-rest-start /etc/kafka-rest/kafka-rest.properties
 LimitNOFILE=100000
 TimeoutStopSec=180

debian/confluent-kafka-rest.spec.in

@@ -92,6 +92,7 @@ fi
 /usr/share/doc/kafka-rest
 
 %config(noreplace) /etc/kafka-rest/*
+%config(noreplace) /etc/sysconfig/confluent-kafka-rest
 
 %clean
 #used to cleanup things outside the build area and possibly inside.