Comment # 6 on bug 1131686 from William Brown

Seeing the same here:

Apr 06 09:28:04 lazuli systemd[1]: Starting System Security Services Daemon...
Apr 06 09:28:04 lazuli sssd[22634]: ldb: module version mismatch in
../source4/dsdb/samdb/ldb_modules/acl.c : ldb_version=1.2.4
module_version=1.2.3
Apr 06 09:28:04 lazuli sssd[22634]: ldb: failed to initialise module
/usr/lib64/ldb/samba/acl.so : Unavailable
Apr 06 09:28:04 lazuli sssd[22634]: ldb: failed to initialise module
/usr/lib64/ldb/samba : Unavailable
Apr 06 09:28:04 lazuli sssd[22634]: SSSD couldn't load the configuration
database [5]: Input/output error.
Apr 06 09:28:04 lazuli systemd[1]: sssd.service: Main process exited,
code=exited, status=4/NOPERMISSION
Apr 06 09:28:04 lazuli systemd[1]: Failed to start System Security Services
Daemon.
Apr 06 09:28:04 lazuli systemd[1]: sssd.service: Unit entered failed state.
Apr 06 09:28:04 lazuli systemd[1]: sssd.service: Failed with result
'exit-code'.

This is on transactional-server, fully update with up/dup. Versions are:

openSUSE-release-15.0-lp150.129.1.x86_64
samba-libs-4.7.10+git.124.8d97fe90926-lp150.3.9.1.x86_64
sssd-1.16.1-lp150.2.9.1.x86_64

No further updates are available to me at this time:

lazuli:~ # transactional-update dup
Checking for newer version.
transactional-update 2.11 started
Options: dup
Separate /var detected.
Separate /etc detected.
zypper: nothing to update
transactional-update finished