Export ES_JVM_OPTIONS for SysV init

The environment variable ES_JVM_OPTIONS allows end-users to specify a
custom location for the jvm.options file. Unfortunately, this
environment variable is not exported from the SysV init scripts. This
commit addresses this issue, and includes a test that ES_JVM_OPTIONS and
ES_JAVA_OPTS work for the SysV init packages.

Relates elastic#21445

Author: jasontedor

distribution/deb/src/main/packaging/init.d/elasticsearch

@@ -84,6 +84,7 @@ DAEMON_OPTS="-d -p $PID_FILE -Edefault.path.logs=$LOG_DIR -Edefault.path.data=$D
 export ES_JAVA_OPTS
 export JAVA_HOME
 export ES_INCLUDE
+export ES_JVM_OPTIONS
 
 if [ ! -x "$DAEMON" ]; then
 	echo "The elasticsearch startup script does not exists or it is not executable, tried: $DAEMON"

distribution/rpm/src/main/packaging/init.d/elasticsearch

@@ -60,9 +60,10 @@ prog="elasticsearch"
 pidfile="$PID_DIR/${prog}.pid"
 
 export ES_JAVA_OPTS
-export ES_STARTUP_SLEEP_TIME
 export JAVA_HOME
 export ES_INCLUDE
+export ES_JVM_OPTIONS
+export ES_STARTUP_SLEEP_TIME
 
 lockfile=/var/lock/subsys/$prog
 

qa/vagrant/src/test/resources/packaging/scripts/20_tar_package.bats

@@ -110,12 +110,12 @@ setup() {
     local temp=`mktemp -d`
     touch "$temp/jvm.options"
     chown -R elasticsearch:elasticsearch "$temp"
-    echo "-Xms264m" >> "$temp/jvm.options"
-    echo "-Xmx264m" >> "$temp/jvm.options"
+    echo "-Xms512m" >> "$temp/jvm.options"
+    echo "-Xmx512m" >> "$temp/jvm.options"
     export ES_JVM_OPTIONS="$temp/jvm.options"
     export ES_JAVA_OPTS="-XX:-UseCompressedOops"
     start_elasticsearch_service
-    curl -s -XGET localhost:9200/_nodes | fgrep '"heap_init_in_bytes":276824064'
+    curl -s -XGET localhost:9200/_nodes | fgrep '"heap_init_in_bytes":536870912'
     curl -s -XGET localhost:9200/_nodes | fgrep '"using_compressed_ordinary_object_pointers":"false"'
     stop_elasticsearch_service
     export ES_JVM_OPTIONS=$es_jvm_options

qa/vagrant/src/test/resources/packaging/scripts/70_sysv_initd.bats

@@ -134,6 +134,25 @@ setup() {
     [ "$status" -eq 3 ] || [ "$status" -eq 4 ]
 }
 
+@test "[INIT.D] start Elasticsearch with custom JVM options" {
+    local es_java_opts=$ES_JAVA_OPTS
+    local es_jvm_options=$ES_JVM_OPTIONS
+    local temp=`mktemp -d`
+    touch "$temp/jvm.options"
+    chown -R elasticsearch:elasticsearch "$temp"
+    echo "-Xms512m" >> "$temp/jvm.options"
+    echo "-Xmx512m" >> "$temp/jvm.options"
+    cp /etc/sysconfig/elasticsearch "$temp/elasticsearch"
+    echo "ES_JVM_OPTIONS=\"$temp/jvm.options\"" >> /etc/sysconfig/elasticsearch
+    echo "ES_JAVA_OPTS=\"-XX:-UseCompressedOops\"" >> /etc/sysconfig/elasticsearch
+    service elasticsearch start
+    wait_for_elasticsearch_status
+    curl -s -XGET localhost:9200/_nodes | fgrep '"heap_init_in_bytes":536870912'
+    curl -s -XGET localhost:9200/_nodes | fgrep '"using_compressed_ordinary_object_pointers":"false"'
+    service elasticsearch stop
+    cp "$temp/elasticsearch" /etc/sysconfig/elasticsearch
+}
+
 # Simulates the behavior of a system restart:
 # the PID directory is deleted by the operating system
 # but it should not block ES from starting