Windows下Elasticsearch启动一闪而过报错

现象

windows在安装Elasticsearch的过程中，启动elasticsearch.bat的时候,黑窗口一闪而过，启动失败，这个时候我们可以到elasticsearch目录下的logs文件夹下查看日志情况，报错情况如下：

[2019-05-07T18:39:13,452][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [hdzx_elk_02] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: java.lang.IllegalStateException: Could not load plugin descriptor for existing plugin [ik]. Was the plugin built before 2.0?
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:127) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:114) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:58) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:122) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.cli.Command.main(Command.java:88) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:91) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:84) ~[elasticsearch-5.3.0.jar:5.3.0]
Caused by: java.lang.IllegalStateException: Could not load plugin descriptor for existing plugin [ik]. Was the plugin built before 2.0?
at org.elasticsearch.plugins.PluginsService.getPluginBundles(PluginsService.java:295) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.plugins.PluginsService.(PluginsService.java:131) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.node.Node.(Node.java:302) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.node.Node.(Node.java:238) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.bootstrap.Bootstrap$6.(Bootstrap.java:242) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:242) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:360) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:123) ~[elasticsearch-5.3.0.jar:5.3.0]
… 6 more
Caused by: java.nio.file.NoSuchFileException: /home/admin/data/esdata/elasticsearch-5.3.0/plugins/ik/plugin-descriptor.properties
at sun.nio.fs.UnixException.translateToIOException(UnixException.java:86) ~[?:?]
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) ~[?:1.8.0_111]
at java.nio.file.Files.newByteChannel(Files.java:407) ~[?:1.8.0_111]
at java.nio.file.spi.FileSystemProvider.newInputStream(FileSystemProvider.java:384) ~[?:1.8.0_111]
at java.nio.file.Files.newInputStream(Files.java:152) ~[?:1.8.0_111]
at org.elasticsearch.plugins.PluginInfo.readFromProperties(PluginInfo.java:86) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.plugins.PluginsService.getPluginBundles(PluginsService.java:292) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.plugins.PluginsService.(PluginsService.java:131) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.node.Node.(Node.java:302) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.node.Node.(Node.java:238) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.bootstrap.Bootstrap$6.(Bootstrap.java:242) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:242) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:360) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:123) ~[elasticsearch-5.3.0.jar:5.3.0]

我们可以看到报错是由于在安装ik插件的时候报错,找不到指定的properties文档

原因

在安装ik分词器的时候下载的是.zip文件，之后直接将其解压缩在plugins文件夹下造成的

解决方法

在plugin文件夹下再新建一个ik文件夹，将解压缩后的文件迁移到ik文件夹下即可

注意

使用的Elasticsearch版本与ik版本要匹配，不然仍然可能报错
版本对应及其配置可参考文章
elasticsearch ik分词器的安装和使用

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