Current audit configuration: 

auditLog: 
    destination: file 
    format: JSON 
    path: /data/mongodb/audit/mongo_audit.log 

Files are rotated using SIGUSR1 to the mongod's PID. 

When using the audit feature, we want the audit file to have r/w permissions for the mongod group and not only the mongod user itself.

Nowadays we are using the flag  honorSystemUmask:true , but we want to eliminate it for not all the users on the machine will have access to it