Files Mysteriously Changing Ownership

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We have a directory that holds the media for a website. We want that directory owned by the apache user and group. But for some reason that directory and all it’s files keep reverting to being owned by a user account and group.

[root@webservera ourwebsite]# ls -ld media/ drwxrwxr-x 163 user_a user_a_group 143360 Apr 29 13:29 media/

I have even setup a cron job to automate the ownership of this file to the right group to run every hour.

0 * * * * /bin/chown -R apache:apache /var/www/ourwebsite/media/

But every hour that directory keeps reverting to being owned by user_a and user_a_group.

I’ve checked history files and crontabs for all users including root for rsync’s and chowns.

And I can find no evidence of what is causing this phenomenon of the directory automatically changing its’ owner and group.

How can I best investigate this in ways I haven’t tried yet?

The host in question is a CentOS 5.7 host.

Thanks

Tim

4 thoughts on - Files Mysteriously Changing Ownership

  • If it is nfsv4, then you have the mysteries of idmapd involved. With v3, it should just be the numeric id’s that you can see with ls
    -n instead of ls -l, but keep in mind that they could be changed by any system with write access to the shared directory.