解决在Windows下elasticsearch启动失败，报${ES_TMPDIR}找不到的问题

在Windows下elasticsearch启动失败，报${ES_TMPDIR}找不到问题。

【日志】

[2018-03-25T16:11:34,144][WARN ][o.e.b.Natives            ] unable to load JNA native support library, native methods will be disabled.

java.lang.UnsatisfiedLinkError: Failed to create temporary file for /com/sun/jna/win32-x86-64/jnidispatch.dll library: JNA temporary directory '${ES_TMPDIR}' does not exist

at com.sun.jna.Native.loadNativeDispatchLibraryFromClasspath(Native.java:962) ~[jna-4.5.1.jar:4.5.1 (b0)]

at com.sun.jna.Native.loadNativeDispatchLibrary(Native.java:922) ~[jna-4.5.1.jar:4.5.1 (b0)]

at com.sun.jna.Native.(Native.java:190) ~[jna-4.5.1.jar:4.5.1 (b0)]

at java.lang.Class.forName0(Native Method) ~[?:1.8.0_60]

at java.lang.Class.forName(Class.java:264) ~[?:1.8.0_60]

at org.elasticsearch.bootstrap.Natives.(Natives.java:45) [elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:104) [elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:172) [elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:323) [elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:121) [elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:112) [elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) [elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) [elasticsearch-cli-6.2.2.jar:6.2.2]

at org.elasticsearch.cli.Command.main(Command.java:90) [elasticsearch-cli-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) [elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:85) [elasticsearch-6.2.2.jar:6.2.2]

[2018-03-25T16:14:33,946][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [CHANSON-PC] uncaught exception in thread [main]

org.elasticsearch.bootstrap.StartupException: java.lang.IllegalStateException: Unable to access 'java.io.tmpdir' (${ES_TMPDIR})

at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:125) ~[elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:112) ~[elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) ~[elasticsearch-cli-6.2.2.jar:6.2.2]

at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) ~[elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:85) ~[elasticsearch-6.2.2.jar:6.2.2]

Caused by: java.lang.IllegalStateException: Unable to access 'java.io.tmpdir' (${ES_TMPDIR})

at org.elasticsearch.bootstrap.FilePermissionUtils.addDirectoryPath(FilePermissionUtils.java:70) ~[elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Security.addFilePermissions(Security.java:299) ~[elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Security.createPermissions(Security.java:262) ~[elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Security.configure(Security.java:123) ~[elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:208) ~[elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:323) ~[elasticsearch-6.2.2.jar:6.2.2]

at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:121) ~[elasticsearch-6.2.2.jar:6.2.2]

... 6 more

Caused by: java.nio.file.AccessDeniedException: C:\Program Files\Elastic\Elasticsearch\6.2.2\bin\${ES_TMPDIR}

at sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:83) ~[?:1.8.0_60]

at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:97) ~[?:1.8.0_60]

【分析】

这是由于权限导致的。

【解决方案】

到elastic目录，例如：C:\Program Files\Elastic\Elasticsearch\6.2.2\bin，右键”elasticsearch.exe”，选择“以管理员身份运行”，即可。