/opt/app/data directory is created as /opt/ap/?p/data
[root@cttltest software]# ./atlassian-confluence-7.3.1-x64.bin
Select the folder where you would like Confluence 7.3.1 to be installed,
then click Next.
Where should Confluence 7.3.1 be installed?
[/opt/atlassian/confluence]
/opt/app/prod
Default location for Confluence data
[/var/atlassian/application-data/confluence]
/opt/app/prod/data
The home directory cannot be a sub-directory of the installation directory. Please use another location.
Default location for Confluence data
[/opt/app/prod/data]
/opt/app/data