This file is indexed.

/usr/share/ipa/schema.d/README is in freeipa-server 4.7.0~pre1+git20180411-2ubuntu2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
This directory is indended to store schema files for 3rd-party plugins.

Each schema file should be named NN-description.ldif where NN is a number 00..90.

The schema files from this directory are merged together with the core IPA
schema files during the run of ipa-server-upgrade utility. Therefore, they are
also installed when upgrade happens within the process of ipa-server-install.

The directory is installed as /usr/share/ipa/schema.d and is owned by a
freeipa-server-common package. Therefore, a 3rd-party plugin would need to
depend on the freeipa-server-common package if it delivers the schema file(s).

You may place your schema files in a subdirectory too, the code that loads
schema files processes recursively all subdirectories of schema.d.