update jvm options to current version provided by elasticsearch package

The jvm options template provided by this ansible role doesn't reflect current log4j configuration in elasticsearch 6.x and 7.x. This commit update it to default version provided in 6.x and 7.x elasticsearch standard packages.

templates/jvm.options.j2

@@ -41,6 +41,28 @@
 -XX:CMSInitiatingOccupancyFraction=75
 -XX:+UseCMSInitiatingOccupancyOnly
 
+## G1GC Configuration
+# NOTE: G1GC is only supported on JDK version 10 or later.
+# To use G1GC uncomment the lines below.
+# 10-:-XX:-UseConcMarkSweepGC
+# 10-:-XX:-UseCMSInitiatingOccupancyOnly
+# 10-:-XX:+UseG1GC
+{% if es_version is version('7.3.0', '<=') %}
+# 10-:-XX:InitiatingHeapOccupancyPercent=75
+{% else %}
+# 10-:-XX:G1ReservePercent=25
+# 10-:-XX:InitiatingHeapOccupancyPercent=30
+{% endif %}
+
+## DNS cache policy
+# cache ttl in seconds for positive DNS lookups noting that this overrides the
+# JDK security property networkaddress.cache.ttl; set to -1 to cache forever
+-Des.networkaddress.cache.ttl=60
+# cache ttl in seconds for negative DNS lookups noting that this overrides the
+# JDK security property networkaddress.cache.negative ttl; set to -1 to cache
+# forever
+-Des.networkaddress.cache.negative.ttl=10
+
 ## optimizations
 
 # pre-touch memory pages used by the JVM during initialization
@@ -48,8 +70,8 @@
 
 ## basic
 
-# force the server VM
--server
+# explicitly set the stack size
+-Xss1m
 
 # set to headless, just in case
 -Djava.awt.headless=true
@@ -60,18 +82,23 @@
 # use our provided JNA always versus the system one
 -Djna.nosys=true
 
-# use old-style file permissions on JDK9
--Djdk.io.permissionsUseCanonicalPath=true
+# turn off a JDK optimization that throws away stack traces for common
+# exceptions because stack traces are important for debugging
+-XX:-OmitStackTraceInFastThrow
 
 # flags to configure Netty
 -Dio.netty.noUnsafe=true
 -Dio.netty.noKeySetOptimization=true
 -Dio.netty.recycler.maxCapacityPerThread=0
+{% if es_version is version('7.4.0', '>=') %}
+-Dio.netty.allocator.numDirectArenas=0
+{% endif %}
 
 # log4j 2
 -Dlog4j.shutdownHookEnabled=false
 -Dlog4j2.disable.jmx=true
--Dlog4j.skipJansi=true
+
+-Djava.io.tmpdir=${ES_TMPDIR}
 
 ## heap dumps
 
@@ -79,30 +106,35 @@
 # heap dumps are created in the working directory of the JVM
 -XX:+HeapDumpOnOutOfMemoryError
 
-# specify an alternative path for heap dumps
-# ensure the directory exists and has sufficient space
-#-XX:HeapDumpPath=${heap.dump.path}
+# specify an alternative path for heap dumps; ensure the directory exists and
+# has sufficient space
+-XX:HeapDumpPath=${heap.dump.path}
 
-## GC logging
+# specify an alternative path for JVM fatal error logs
+-XX:ErrorFile={{ es_log_dir }}/hs_err_pid%p.log
 
-#-XX:+PrintGCDetails
-#-XX:+PrintGCTimeStamps
-#-XX:+PrintGCDateStamps
-#-XX:+PrintClassHistogram
-#-XX:+PrintTenuringDistribution
-#-XX:+PrintGCApplicationStoppedTime
+## JDK 8 GC logging
 
-# log GC status to a file with time stamps
-# ensure the directory exists
-#-Xloggc:${loggc}
+8:-XX:+PrintGCDetails
+8:-XX:+PrintGCDateStamps
+8:-XX:+PrintTenuringDistribution
+8:-XX:+PrintGCApplicationStoppedTime
+8:-Xloggc:{{ es_log_dir }}/gc.log
+8:-XX:+UseGCLogFileRotation
+8:-XX:NumberOfGCLogFiles=32
+8:-XX:GCLogFileSize=64m
 
+# JDK 9+ GC logging
+9-:-Xlog:gc*,gc+age=trace,safepoint:file={{ es_log_dir }}/gc.log:utctime,pid,tags:filecount=32,filesize=64m
+# due to internationalization enhancements in JDK 9 Elasticsearch need to set the provider to COMPAT otherwise
+# time/date parsing will break in an incompatible way for some date patterns and locals
+9-:-Djava.locale.providers=COMPAT
+
+{% if es_major_version == "6.x" %}
+# temporary workaround for C2 bug with JDK 10 on hardware with AVX-512
+10-:-XX:UseAVX=2
+{% endif %}
 
-# By default, the GC log file will not rotate.
-# By uncommenting the lines below, the GC log file
-# will be rotated every 128MB at most 32 times.
-#-XX:+UseGCLogFileRotation
-#-XX:NumberOfGCLogFiles=32
-#-XX:GCLogFileSize=128M
 {% if es_jvm_custom_parameters !='' %}
 {% for item in es_jvm_custom_parameters %}
 {{ item }}