In ElasticSearch >= 5 the documentation has changed, which means none of the above answers worked for me.
I tried changing ES_HEAP_SIZE
in /etc/default/elasticsearch
and in /etc/init.d/elasticsearch
, but when I ran ps aux | grep elasticsearch
the output still showed:
/usr/bin/java -Xms2g -Xmx2g # aka 2G min and max ram
I had to make these changes in:
/etc/elasticsearch/jvm.options
# Xms represents the initial size of total heap space
# Xmx represents the maximum size of total heap space
-Xms1g
-Xmx1g
# the settings shipped with ES 5 were: -Xms2g
# the settings shipped with ES 5 were: -Xmx2g