在部署單機(jī)版es 的時(shí)候出現(xiàn)了這個(gè)問(wèn)題，es為7.17.5版本，部署路徑為/opt/shan/es

問(wèn)題如下：

?java.nio.file.AccessDeniedException: /opt/shan/es/config/elasticsearch.keystore

Exception in thread "main" java.nio.file.AccessDeniedException: /opt/shan/es/config/elasticsearch.keystore
? ? ? ? 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.newFileChannel(UnixFileSystemProvider.java:177)
? ? ? ? at java.nio.channels.FileChannel.open(FileChannel.java:287)
? ? ? ? at java.nio.channels.FileChannel.open(FileChannel.java:335)
? ? ? ? at org.apache.lucene.store.NIOFSDirectory.openInput(NIOFSDirectory.java:83)
? ? ? ? at org.elasticsearch.common.settings.KeyStoreWrapper.load(KeyStoreWrapper.java:211)
? ? ? ? at org.elasticsearch.common.settings.HasPasswordKeyStoreCommand.execute(HasPasswordKeyStoreCommand.java:33)
? ? ? ? at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:77)
? ? ? ? at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:112)
? ? ? ? at org.elasticsearch.cli.MultiCommand.execute(MultiCommand.java:95)
? ? ? ? at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:112)
? ? ? ? at org.elasticsearch.cli.Command.main(Command.java:77)
? ? ? ? at org.elasticsearch.common.settings.KeyStoreCli.main(KeyStoreCli.java:33)
Java HotSpot(TM) 64-Bit Server VM warning: Cannot open file logs/gc.log due to Permission deniedException in thread "main" org.elasticsearch.bootstrap.BootstrapException: java.nio.file.AccessDeniedException: /opt/shan/es/config/elasticsearch.keystore
Likely root cause: java.nio.file.AccessDeniedException: /opt/shan/es/config/elasticsearch.keystore
? ? ? ? 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.newFileChannel(UnixFileSystemProvider.java:177)
? ? ? ? at java.nio.channels.FileChannel.open(FileChannel.java:287)
? ? ? ? at java.nio.channels.FileChannel.open(FileChannel.java:335)
? ? ? ? at org.apache.lucene.store.NIOFSDirectory.openInput(NIOFSDirectory.java:83)
? ? ? ? at org.elasticsearch.common.settings.KeyStoreWrapper.load(KeyStoreWrapper.java:211)
? ? ? ? at org.elasticsearch.bootstrap.Bootstrap.loadSecureSettings(Bootstrap.java:253)
? ? ? ? at org.elasticsearch.bootstrap.Bootstrap.loadSecureSettings(Bootstrap.java:247)
? ? ? ? at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:364)
? ? ? ? at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:169)
? ? ? ? at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:160)
? ? ? ? at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:77)
? ? ? ? at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:112)
? ? ? ? at org.elasticsearch.cli.Command.main(Command.java:77)
? ? ? ? at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:125)
? ? ? ? at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:80)
?

?問(wèn)題出現(xiàn)原因，啟動(dòng)es的時(shí)候會(huì)生成elasticsearch.keystore文件，但是es應(yīng)該用用戶定義的非root用戶啟動(dòng)，否則就會(huì)出現(xiàn)錯(cuò)誤，我自定以的用戶是es，但是我啟動(dòng)es用的是root，所以導(dǎo)致了這個(gè)問(wèn)題

解決辦法

1、以root用戶看/opt/shan/es/conf文件夾如下（可以看到elasticsearch.keystore權(quán)限是root，我們需要把這個(gè)權(quán)限改為es，這個(gè)es是我專門為es創(chuàng)建的用戶）

2、執(zhí)行命令

chown es:es??elasticsearch.keystore

3、?切換到es用戶（專門給es啟動(dòng)的用戶）

su es

4、重新啟動(dòng)es即可解決(需要以es用戶啟動(dòng))

sh /opt/shan/es/bin/elasticsearch

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