2013-08-28 19:24:34 -04:00
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[[setup-installation]]
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== Installation
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After link:/download[downloading] the latest release and extracting it,
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*elasticsearch* can be started using:
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[source,sh]
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--------------------------------------------------
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$ bin/elasticsearch
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--------------------------------------------------
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Under *nix system, the command will start the process in the background.
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To run it in the foreground, add the `-f` switch to it:
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[source,sh]
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--------------------------------------------------
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$ bin/elasticsearch -f
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--------------------------------------------------
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ElasticSearch is built using Java, and requires at least
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http://java.sun.com/javase/downloads/index.jsp[Java 6] in order to run.
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The version of Java that will be used can be set by setting the
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`JAVA_HOME` environment variable.
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.*NIX
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*************************************************************************
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There are added features when using the `elasticsearch` shell script.
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The first, which was explained earlier, is the ability to easily run the
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process either in the foreground or the background.
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Another feature is the ability to pass `-X` and `-D` directly to the
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script. When set, both override anything set using either `JAVA_OPTS` or
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`ES_JAVA_OPTS`. For example:
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[source,sh]
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--------------------------------------------------
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2013-09-09 13:06:09 -04:00
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$ bin/elasticsearch -f -Xmx2g -Xms2g -Des.index.store.type=memory
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2013-08-28 19:24:34 -04:00
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--------------------------------------------------
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*************************************************************************
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