问题背景

在使用Docker启动elasticsearch的时候报错：

Exception in thread “main” SettingsException[Failed to load settings from /usr/share/elasticsearch/config/elasticsearch.yml]; nested: AccessDeniedException[/usr/share/elasticsearch/config/elasticsearch.yml];
	at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:100)
	at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:106)
	at java.base/sun.nio.fs.UnixCopyFile.move(UnixCopyFile.java:416)
	at java.base/sun.nio.fs.UnixFileSystemProvider.move(UnixFileSystemProvider.java:266)
	at java.base/java.nio.file.Files.move(Files.java:1432)
	at org.elasticsearch.xpack.security.cli.AutoConfigureNode.fullyWriteFile(AutoConfigureNode.java:1127)
	at org.elasticsearch.xpack.security.cli.AutoConfigureNode.fullyWriteFile(AutoConfigureNode.java:1139)
	at org.elasticsearch.xpack.security.cli.AutoConfigureNode.execute(AutoConfigureNode.java:687)
	at org.elasticsearch.server.cli.ServerCli.autoConfigureSecurity(ServerCli.java:149)
	at org.elasticsearch.server.cli.ServerCli.execute(ServerCli.java:87)
	at org.elasticsearch.common.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:54)
	at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:85)
	at org.elasticsearch.cli.Command.main(Command.java:50)
	at org.elasticsearch.launcher.CliToolLauncher.main(CliToolLauncher.java:64)

因为elasticsearch没有启动，所以不能进入到容器中查看日志，可以使用docker查看，刷新打印：

docker logs  elasticsearch

解决方案

添加自己创建的文件路径挂载的读写权限：

chmod -R 777 /mydata/elasticsearch

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