Issue

Environment

To restore a backup of a CJEMM/CJEOC you have to follow these steps

The CJEMM/CJEOC should be started
Obtain the worker where the CJEMM/CJEOC is running - cje run list-applications | grep <CJEMM-CJEOC-NAME>
Copy the backup file to the /tmp folder of the worker - dna copy <BACKUP_FILE> /tmp <WORKER>
Connect to the worker - dna connect <WORKER>
Obtain JENKINS_HOME mount point - mount | grep <CJEMM-CJEOC-NAME>
List JENKINS_HOME contents - ls -la /mnt/<CJEMM-CJEOC-NAME>/ID
If you will restore a whole backup
Make a backup of the current JENKINS_HOME - tar -czf /tmp/currentBackup.tgz /mnt/<CJEMM-CJEOC-NAME>/ID/*
Remove the JENKINS_HOME content - rm -fr /mnt/<CJEMM-CJEOC-NAME>/ID/*
Restore the backup - tar -xzf /tmp/<BACKUP_FILE> -C /mnt/<CJEMM-CJEOC-NAME>/ID
Restart The CJEMM/CJEOC
If every is OK, remove the backups - rm /tmp/<BACKUP_FILE> /tmp/currentBackup.tgz
If you will restore only some files
Make a backup of the current JENKINS_HOME - tar -czf /tmp/currentBackup.tgz /mnt/<CJEMM-CJEOC-NAME>/ID/*
Restore the backup - tar -xzf /tmp/<BACKUP_FILE> -C /mnt/<CJEMM-CJEOC-NAME>/ID <files_to_restore>
Restart The CJEMM/CJEOC
If every is OK remove the backups - rm /tmp/<BACKUP_FILE> /tmp/currentBackup.tgz
NOTE Due the current issue TIGER-4473 : Backup plugin does not compress all folders with the right permissions, in case you would like to recover from backup, you might need to give the permission drwxr-xr-x. to all the folders inside the $JENKINS_HOME.