如何更改 Elasticsearch 最大内存大小 [英] How to change Elasticsearch max memory size

问题描述

我有一个默认配置为 Elasticsearch 的 Apache 服务器，一切正常，除了默认配置的最大大小为 1GB.

I have an Apache server with a default configuration of Elasticsearch and everything works perfectly, except that the default configuration has a max size of 1GB.

我在Elasticsearch中没有那么多文档要存储，所以我想减少内存.

I don't have such a large number of documents to store in Elasticsearch, so I want to reduce the memory.

我已经看到我必须更改Java配置中的-Xmx参数，但我不知道如何.

I have seen that I have to change the -Xmx parameter in the Java configuration, but I don't know how.

我已经看到我可以执行这个:

I have seen I can execute this:

bin/ElasticSearch -Xmx=2G -Xms=2G

但是当我必须重新启动 Elasticsearch 时，这将丢失.

But when I have to restart Elasticsearch this will be lost.

当 Elasticsearch 作为服务安装时，是否可以更改最大内存使用量?

Is it possible to change max memory usage when Elasticsearch is installed as a service?

推荐答案

在 ElasticSearch >= 5 中的文档有 已更改，这意味着以上答案都不适合我.

In ElasticSearch >= 5 the documentation has changed, which means none of the above answers worked for me.

我尝试在 /etc/default/elasticsearch 和 /etc/init.d/elasticsearch 中更改 ES_HEAP_SIZE，但是当我运行时ps 辅助 |grep elasticsearch 输出仍然显示:

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

我必须在以下方面进行这些更改:

/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

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