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Set ES JVM HEAP Xms equal to Xmx #389

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Merged
merged 1 commit into from
Apr 25, 2017
Merged

Set ES JVM HEAP Xms equal to Xmx #389

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9 changes: 6 additions & 3 deletions elasticsearch/run.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,7 @@ if [[ "${INSTANCE_RAM:-}" =~ $regex ]]; then
fi

#determine if req is less then max recommended by ES
echo "Comparing the specificed RAM to the maximum recommended for ElasticSearch..."
echo "Comparing the specified RAM to the maximum recommended for Elasticsearch..."
if [ ${MAX_ES_MEMORY_BYTES} -lt ${num} ]; then
((num = ${MAX_ES_MEMORY_BYTES}))
echo "Downgrading the INSTANCE_RAM to $(($num / BYTES_PER_MEG))m because ${INSTANCE_RAM} will result in a larger heap then recommended."
Expand All @@ -55,15 +55,18 @@ if [[ "${INSTANCE_RAM:-}" =~ $regex ]]; then
echo "Setting the maximum allowable RAM to $(($num / BYTES_PER_MEG))m which is the largest amount available"
fi
else
echo "Unable to determine the maximum allowable RAM for this host in order to configure ElasticSearch"
echo "Unable to determine the maximum allowable RAM for this host in order to configure Elasticsearch"
exit 1
fi

if [[ $num -lt $MIN_ES_MEMORY_BYTES ]]; then
echo "A minimum of $(($MIN_ES_MEMORY_BYTES/$BYTES_PER_MEG))m is required but only $(($num/$BYTES_PER_MEG))m is available or was specified"
exit 1
fi
export ES_JAVA_OPTS="${ES_JAVA_OPTS:-} -Xms128M -Xmx$(($num/2/BYTES_PER_MEG))m"

# Set JVM HEAP size to half of available space
num=$(($num/2/BYTES_PER_MEG))
export ES_JAVA_OPTS="${ES_JAVA_OPTS:-} -Xms${num}m -Xmx${num}m"
echo "ES_JAVA_OPTS: '${ES_JAVA_OPTS}'"
else
echo "INSTANCE_RAM env var is invalid: ${INSTANCE_RAM:-}"
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