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[+] Description of problem:
 - When using SSSD with "id_provider = files", the SSSD service will time out during enum_files_users when there is 150k+ local users.

[+] Version-Release number of selected component (if applicable):
 - sssd-2.2.3-20.el8.x86_64

[+] How reproducible:
 - Always

[+] Steps to Reproduce:
 1. Create 150k local users
 2. Configure sssd.conf for files id provider and krb5 auth provider
 3. Start SSSD service

[+] Actual results:
 - SSSD service times out
 - Authentication takes a long time to complete
 - 'id', 'ls' and similar commands time out

[+] Expected results:
 - Since pam_krb5.so has been removed in favor of only using SSSD, SSSD should be able to perform the same exact function in some way without any sort of 'caching'

[+] Additional info:
 1. We've set "pwfield = *" within [nss]
 2. We've set "enable_files_domain = false" within [sssd]
 3. We've set "TimeoutStartUSec" in /etc/systemd/system/sssd.service to 10m.

Hi,

have you tried to use

    id_provider = proxy
    proxy_lib_name = files

instead of 'id_provider = files' for this use-case?

HTH

bye,
Sumit

*** This bug has been marked as a duplicate of bug 1693379 ***