如何更改弹性搜索最大内存大小 [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.

我不有如此大量的文件存储在Elasticsearch，所以我想减少记忆。

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

我看到我必须更改 -Xmx 参数在Java配置，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，这将会丢失。

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

有可能在安装Elasticsearch时更改最大内存使用量一个服务？

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

推荐答案

于2016年11月24日更新：Elasticsearch 5显然已经改变了配置JVM。 请参阅此处的答案。以下答案仍适用于版本<

Updated on Nov 24, 2016: Elasticsearch 5 apparently has changed the way to configure the JVM. See this answer here. The answer below still applies to versions < 5.

tirdadc，感谢您在下面的评论中指出这一点。

tirdadc, thank you for pointing this out in your comment below.

当我想知道内存和ES时，我有一个与他人分享的pastebin页面。这对我来说很有效： http://pastebin.com/mNUGQCLY 。我也会粘贴这里的内容：

I have a pastebin page that I share with others when wondering about memory and ES. It's worked OK for me: http://pastebin.com/mNUGQCLY. I'll paste the contents here as well:

参考文献：

https://github.com/grigorescu/Brownian/wiki/ElasticSearch-Configuration
http://www.elasticsearch.org/guide/reference/setup/installation/

编辑以下文件以修改内存和文件编号限制。这些说明假定Ubuntu 10.04可能适用于更高版本和其他发行版/操作系统。 （编辑：这适用于Ubuntu 14.04）。

Edit the following files to modify memory and file number limits. These instructions assume Ubuntu 10.04, may work on later versions and other distributions/OSes. (Edit: This works for Ubuntu 14.04 as well.)

/etc/security/limits.conf ：

elasticsearch - nofile 65535
elasticsearch - memlock unlimited

/ etc / default / elasticsearch（在CentOS / RH：/ etc / sysconfig / elasticsearch）：

ES_HEAP_SIZE=512m
MAX_OPEN_FILES=65535
MAX_LOCKED_MEMORY=unlimited

/etc/elasticsearch/elasticsearch.yml ：

bootstrap.mlockall: true

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