Getting Data In

Deployed app on Universal Forwarder being created with 700 permissions (Linux Deployment Server to Linux UF)

twhitehead
New Member

Created an app on the deployment server which is used to tell the Universal Forwarder which directories and logs to monitor. There is no issue with this aspect, the logs are being monitored as expected.

What I would like to do is setup permissions on the Universal Forwarder so that other groups can read/write to the directories that are created by the UF.

  • Used RPM to install to /opt/splunkforwarder
  • splunk:splunkis used to own the files and run the service
  • setgid is configured on /opt/splunkforwarder
  • Setup File ACL permissions along with some defaults

    # file: opt/splunkforwarder/

    owner: splunk

    group: splunk

    flags: -s-

    user::rwx
    group::rwx
    group:splunk:rwx
    mask::rwx
    other::r-x
    default:user::rwx
    default:group::rwx
    default:group:splunk:rwx
    default:mask::rwx
    default:other::r-x

However when an app is deployed to the UF, the mask is not set on the ACL stripping the newly created directory of the group permissions.

Access: (2700/drwx--S---) Uid: ( 205/ splunk) Gid: ( 205/ splunk)

# file: myapp/
# owner: splunk
# group: splunk
# flags: -s-
user::rwx
group::rwx        #effective:---
group:splunk:rwx  #effective:---
mask::---
other::---
default:user::rwx
default:group::rwx
default:group:splunk:rwx
default:mask::rwx
default:other::r-x

Logging in interactively or non-interactive, the directories is created with the expected permissions.
Access: (2775/drwxrwsr-x) Uid: ( 205/ splunk) Gid: ( 205/ splunk)

# file: test/
# owner: splunk
# group: splunk
# flags: -s-
user::rwx
group::rwx
group:splunk:rwx
mask::rwx
other::r-x
default:user::rwx
default:group::rwx
default:group:splunk:rwx
default:mask::rwx
default:other::r-x

I can manually add the mask sudo setfacl -Rm m:rwX myapp/and the effective permissions will be as intended.
Access: (2770/drwxrws---) Uid: ( 205/ splunk) Gid: ( 205/ splunk)

0 Karma
Career Survey
First 500 qualified respondents will receive a $20 gift card! Tell us about your professional Splunk journey.
Get Updates on the Splunk Community!

Tech Talk Recap | Mastering Threat Hunting

Mastering Threat HuntingDive into the world of threat hunting, exploring the key differences between ...

Observability for AI Applications: Troubleshooting Latency

If you’re working with proprietary company data, you’re probably going to have a locally hosted LLM or many ...

Splunk AI Assistant for SPL vs. ChatGPT: Which One is Better?

In the age of AI, every tool promises to make our lives easier. From summarizing content to writing code, ...