Thank you. Basically our problem are not the ACLs or their support per se, but that we have to manage a huge number of individual ACLS (several hundred users in more than hundred projects) in multi-petabyte filesystem and still have to keep overview and control. Our problem is more the management side. Effectively we are looking for a tool that helps us manage these permissions and we would accept whatever permissions mechanism this tool uses (UGO/ACLs).
Cheers frank
On 11/27/2018 03:06 PM, Leroy Tennison wrote:
Well, there are extended ACLs if they're available in CentOS, when I first worked with them (long ago) they were new (and on a different Distro). I hope support for them has improved. They allow multiple users/groups to be assigned permissions to a file/directory. The problem then was that chmod (and other programs) were not extended-ACL-aware and could over-ride extended ACLs. There was a mechanism to recover from the situation but what it basically came down to was eternal vigilance - the system administrators had to understand (and agree about) extended ACLs and be careful/diligent in applying them. There are hacks which could possibly help (rename chmod and replace it with a script warning about extended ACLs) but, in the final analysis, it's not a decision to be undertaken lightly (unless the situation has changed dramatically).
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From: CentOS centos-bounces@centos.org on behalf of Frank Thommen list.centos@drosera.ch Sent: Tuesday, November 27, 2018 7:25 AM To: CentOS mailing list Subject: [EXTERNAL] [CentOS] Tools/mechanisms for the management of access permissions in big filebased datasets
Hello,
we are currently managing access permissions through classical user-group-others permissions on a multi-petabyte directory tree with partially very deep and broad directories. Projects are represented by directory trees and mapped through GIDs. Lately we had lots of "singular" permission request (one single user needs access to a single dataset but should not be able to see all other datasets belonging to the same project). We realized, that the UGO model doesn't scale and is becoming more and more unmanageable.
Can you recommend tools/mechanisms/technologies to overcome the drawbacks of the UGO model? We are thinking about some purely ACL based mechanism (but are open to other ideas). All filesystems in question are mounted via NFSv4 and the clients are (almost) completely CentOS 7.x hsots. Ideally the tool would have some web UI and some kind of (REST)API which allows us to modify permissions from our inhouse data management application (which does /not/ manage permissions, just the structure of the data). Additionally it should be able to visualize/report permissions in directory.
I wasn't very successful in googling possible candidates, hence the question to the list.
Cheers frank
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