Elasticsearch安装

下载

下载地址：https://www.elastic.co/downloads/elasticsearch

安装

# 解压
tar -zxvf elasticsearch-6.5.4.tar.gz
# copy

单机

集群

配置

discovery.zen.ping.unicast.hosts: ["127.0.0.1:9300", "127.0.0.1:9301", "127.0.0.1:9302"]

elasticsearch 不推荐使用多播，推荐使用单播

异常详情

Exception in thread "main" java.nio.file.AccessDeniedException: /Library/elasticsearch-6.5.4/config/jvm.options
    at sun.nio.fs.UnixException.translateToIOException(UnixException.java:84)
    at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
    at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
    at sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
    at java.nio.file.Files.newByteChannel(Files.java:361)
    at java.nio.file.Files.newByteChannel(Files.java:407)
    at java.nio.file.spi.FileSystemProvider.newInputStream(FileSystemProvider.java:384)
    at java.nio.file.Files.newInputStream(Files.java:152)
    at org.elasticsearch.tools.launchers.JvmOptionsParser.main(JvmOptionsParser.java:60)

解决方案

sudo chown -R 用户名 elasticsearch-6.5.4

异常详情

failed to send join request to master [{node-1}{woYxlU_VRVOCKYgA9QXl5g}{GQW9C2dXTV2KkaPaYP76Jw}{127.0.0.1}{127.0.0.1:9300}{ml.machine_memory=17179869184, ml.max_open_jobs=20, xpack.installed=true, ml.enabled=true}], reason [RemoteTransportException[[node-1][127.0.0.1:9300][internal:discovery/zen/join]]; nested: IllegalArgumentException[can't add node {node-2}{woYxlU_VRVOCKYgA9QXl5g}{aewcXbjZTq-brZG3gWiXPQ}{127.0.0.1}{127.0.0.1:9301}{ml.machine_memory=17179869184, ml.max_open_jobs=20, xpack.installed=true, ml.enabled=true}, found existing node {node-1}{woYxlU_VRVOCKYgA9QXl5g}{GQW9C2dXTV2KkaPaYP76Jw}{127.0.0.1}{127.0.0.1:9300}{ml.machine_memory=17179869184, xpack.installed=true, ml.max_open_jobs=20, ml.enabled=true} with the same id but is a different node instance]; ]

解决方案

是因为复制的elasticsearch文件夹下包含了data文件中示例一的节点数据，需要把data文件下的文件清空。

参考