Confluence backup fail(permission denied)

[By KJ]

I'm trying to make a backup and get failed

this is message of atlassian-confluence.log

2017-11-22 17:37:20,600 INFO [http-nio-8090-exec-8] [atlassian.confluence.upgrade.AbstractUpgradeManager] getExportBuildNumber Backward compatibility for export: "Upgrade to build number: 6169" prevents compatibility before 6169
2017-11-22 17:37:22,234 WARN [http-nio-8090-exec-8] [activeobjects.confluence.backup.LoggingBackupProgressMonitor] beginBackup Begin Active objects backup, change log level to INFO for com.atlassian.activeobjects.confluence.backup for more detailed logging.
-- url: /admin/dobackup.action | traceId: d9d455116c015005 | userName: admin | referer: http://192.168.9.24:8090/admin/backup.action | action: dobackup
2017-11-22 17:37:23,558 WARN [http-nio-8090-exec-8] [activeobjects.confluence.backup.LoggingBackupProgressMonitor] endBackup Completed active objects backup.
-- url: /admin/dobackup.action | traceId: d9d455116c015005 | userName: admin | referer: http://192.168.9.24:8090/admin/backup.action | action: dobackup
2017-11-22 17:37:23,738 ERROR [http-nio-8090-exec-8] [atlassian.confluence.servlet.ConfluenceServletDispatcher] sendError Could not execute action
-- url: /admin/dobackup.action | traceId: d9d455116c015005 | userName: admin | referer: http://192.168.9.24:8090/admin/backup.action
java.io.IOException: 허가 거부
at java.io.UnixFileSystem.createFileExclusively(Native Method)
at java.io.File.createNewFile(File.java:1012)
at com.atlassian.core.util.FileUtils.copyFile(FileUtils.java:461)
at com.atlassian.core.util.FileUtils.copyFile(FileUtils.java:397)

"허가 거부" means permission denied

permission of backups dir is this

drwxr-xr-x 2 confluence1 confluence1 4096 11월 22 17:38 backups

[Nic Brough [Adaptavist]]

The user running the Confluence service does not have full read/write access to <confluence home>/export

My guess is that it is not running as "confluence1"