es heap option control

Author: bitsofinfo

Dockerfile

@@ -23,6 +23,9 @@ RUN cd /toolbox && \
     ln -s elasticsearch-${ES_VERSION} elasticsearch && \
     chown -R elasticsearch elasticsearch-${ES_VERSION}
 
+# our entrypoint.sh sets and can override this
+RUN sed -i '/-Xm[xs]/s/^/#/' /toolbox/elasticsearch/config/jvm.options
+
 RUN cd /toolbox && \
     curl -O https://artifacts.elastic.co/downloads/kibana/kibana-${KIBANA_VERSION}-linux-x86_64.tar.gz && \
     tar -xvf kibana-${KIBANA_VERSION}-linux-x86_64.tar.gz && \

README.md

@@ -381,6 +381,9 @@ docker run --rm -ti -p 5601:5601 \
   analyze-only
 ```
 
+Want to control the default ElasticSearch JVM memory heap options you can do so via
+a docker environment variable i.e. `-e ES_JAVA_OPTS="-Xmx1g -Xms1g"` etc.
+
 ## <a id="help"></a>Help/Resources
 
 ### Gmail

entrypoint.sh

@@ -1,9 +1,18 @@
 #!/bin/bash
 
+if [ -z "$ES_JAVA_OPTS" ]; then
+  # if not set just use ES defaults (that were formally in jvm.options see Dockerfile)
+  export ES_JAVA_OPTS="-Xmx2g -Xms2g"
+else
+  echo
+  echo "using: ES_JAVA_OPTS=$ES_JAVA_OPTS"
+fi
+
+
 echo
 echo "Starting ElasticSearch.... please wait"
 echo
-su -c "nohup /toolbox/elasticsearch/bin/elasticsearch -d -Enetwork.host=0.0.0.0 &>/toolbox/elasticsearch/elasticsearch.log &" -s /bin/bash elasticsearch
+su -c "export ES_JAVA_OPTS='$ES_JAVA_OPTS'; nohup /toolbox/elasticsearch/bin/elasticsearch -d -Enetwork.host=0.0.0.0 &>/toolbox/elasticsearch/elasticsearch.log &" -s /bin/bash elasticsearch
 sleep 10
 timeout 30 tail -f /toolbox/elasticsearch/logs/elasticsearch.log
 
@@ -63,6 +72,12 @@ else
   echo
 fi
 
+echo
+echo "ElasticSearch and Kibana processes....."
+ps aux | grep 'java\|kibana'
+
+echo
+echo 
 echo "In your web browser go to http://localhost:5601"
 echo ""
 echo "On the first screen that says 'Configure an index pattern', in the field labeled 'Index name or pattern' type 'mbox'"